/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem02_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:25:34,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:25:34,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:25:34,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:25:34,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:25:34,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:25:34,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:25:34,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:25:34,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:25:34,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:25:34,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:25:34,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:25:34,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:25:34,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:25:34,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:25:34,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:25:34,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:25:34,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:25:34,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:25:34,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:25:34,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:25:34,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:25:34,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:25:34,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:25:34,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:25:34,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:25:34,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:25:34,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:25:34,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:25:34,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:25:34,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:25:34,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:25:34,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:25:34,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:25:34,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:25:34,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:25:34,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:25:34,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:25:34,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:25:34,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:25:34,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:25:34,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:25:34,714 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:25:34,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:25:34,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:25:34,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:25:34,717 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:25:34,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:25:34,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:25:34,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:25:34,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:25:34,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:25:34,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:25:34,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:25:34,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:25:34,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:25:34,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:25:34,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:25:34,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:25:34,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:25:34,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:25:34,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:25:34,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:25:34,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:34,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:25:34,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:25:34,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:25:34,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:25:34,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:25:34,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:25:34,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:25:34,724 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:25:35,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:25:35,238 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:25:35,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:25:35,244 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:25:35,245 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:25:35,246 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 12:25:35,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0e4bf96/077085bb2c634941adc205cecd5ed096/FLAGe9667251f [2020-09-25 12:25:35,988 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:25:35,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 12:25:36,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0e4bf96/077085bb2c634941adc205cecd5ed096/FLAGe9667251f [2020-09-25 12:25:36,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac0e4bf96/077085bb2c634941adc205cecd5ed096 [2020-09-25 12:25:36,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:25:36,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:25:36,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:36,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:25:36,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:25:36,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:36" (1/1) ... [2020-09-25 12:25:36,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:36, skipping insertion in model container [2020-09-25 12:25:36,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:36" (1/1) ... [2020-09-25 12:25:36,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:25:36,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:25:36,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:36,730 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:25:37,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:37,030 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:25:37,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:37 WrapperNode [2020-09-25 12:25:37,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:37,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:25:37,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:25:37,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:25:37,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:37" (1/1) ... [2020-09-25 12:25:37,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:37" (1/1) ... [2020-09-25 12:25:37,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:37" (1/1) ... [2020-09-25 12:25:37,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:37" (1/1) ... [2020-09-25 12:25:37,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:37" (1/1) ... [2020-09-25 12:25:37,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:37" (1/1) ... [2020-09-25 12:25:37,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:37" (1/1) ... [2020-09-25 12:25:37,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:25:37,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:25:37,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:25:37,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:25:37,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:37,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:25:37,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:25:37,321 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:25:37,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:25:37,322 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:25:37,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:25:37,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:25:37,323 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:25:37,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:25:37,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:25:37,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:25:39,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:25:39,161 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:25:39,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:39 BoogieIcfgContainer [2020-09-25 12:25:39,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:25:39,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:25:39,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:25:39,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:25:39,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:25:36" (1/3) ... [2020-09-25 12:25:39,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:39, skipping insertion in model container [2020-09-25 12:25:39,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:37" (2/3) ... [2020-09-25 12:25:39,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:39, skipping insertion in model container [2020-09-25 12:25:39,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:39" (3/3) ... [2020-09-25 12:25:39,180 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label56.c [2020-09-25 12:25:39,193 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:25:39,205 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:25:39,229 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:25:39,265 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:25:39,265 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:25:39,265 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:25:39,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:25:39,266 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:25:39,266 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:25:39,266 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:25:39,266 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:25:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:25:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 12:25:39,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:39,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:39,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:39,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:39,334 INFO L82 PathProgramCache]: Analyzing trace with hash -934155158, now seen corresponding path program 1 times [2020-09-25 12:25:39,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:39,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 12:25:39,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:40,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:40,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:44,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:44,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 12:25:44,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:25:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:25:44,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:44,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:25:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 12:25:44,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:25:44,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:44,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:44,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:44,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:25:44,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:44,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:44,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:25:44,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:45,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 12:25:45,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:25:45,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:25:45,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818169219] [2020-09-25 12:25:45,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:25:45,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:45,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:25:45,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:25:45,082 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:25:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:47,322 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-25 12:25:47,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:25:47,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-25 12:25:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:47,348 INFO L225 Difference]: With dead ends: 1247 [2020-09-25 12:25:47,349 INFO L226 Difference]: Without dead ends: 669 [2020-09-25 12:25:47,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:47,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-25 12:25:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-25 12:25:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 12:25:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 12:25:47,471 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 149 [2020-09-25 12:25:47,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:47,472 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 12:25:47,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:25:47,473 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 12:25:47,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 12:25:47,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:47,491 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:47,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:25:47,491 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:47,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:47,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1111409233, now seen corresponding path program 1 times [2020-09-25 12:25:47,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:47,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959994064] [2020-09-25 12:25:47,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:47,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:47,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:52,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:52,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:52,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 12:25:52,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:25:52,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 12:25:52,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:52,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 12:25:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 12:25:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:52,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:52,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:52,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:52,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:52,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:25:52,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:52,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:52,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:52,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:52,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:52,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:52,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:25:52,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:52,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:25:52,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:52,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 12:25:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:52,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959994064] [2020-09-25 12:25:52,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:52,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:52,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226791095] [2020-09-25 12:25:52,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:52,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:52,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:52,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:52,951 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 12:25:54,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:54,958 INFO L93 Difference]: Finished difference Result 1531 states and 1847 transitions. [2020-09-25 12:25:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:54,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 12:25:54,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:54,978 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 12:25:54,978 INFO L226 Difference]: Without dead ends: 932 [2020-09-25 12:25:54,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:25:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-09-25 12:25:55,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2020-09-25 12:25:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-09-25 12:25:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1103 transitions. [2020-09-25 12:25:55,041 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1103 transitions. Word has length 166 [2020-09-25 12:25:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:55,042 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1103 transitions. [2020-09-25 12:25:55,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1103 transitions. [2020-09-25 12:25:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 12:25:55,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:55,047 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:55,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:25:55,048 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:55,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:55,048 INFO L82 PathProgramCache]: Analyzing trace with hash -375129923, now seen corresponding path program 1 times [2020-09-25 12:25:55,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:55,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245087976] [2020-09-25 12:25:55,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:55,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:57,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:57,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:58,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:58,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:00,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 12:26:00,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:26:00,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 12:26:00,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:00,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:26:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 12:26:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 12:26:00,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:00,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:00,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:00,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:00,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:00,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:26:00,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:00,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:00,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:00,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:00,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:00,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:00,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:00,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:26:00,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:00,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:26:00,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:00,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:00,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:00,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:26:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:00,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:00,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:26:00,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:00,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 12:26:00,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:00,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:26:00,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:26:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:26:00,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245087976] [2020-09-25 12:26:00,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:00,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:00,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855706004] [2020-09-25 12:26:00,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:00,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:00,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:00,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:00,691 INFO L87 Difference]: Start difference. First operand 922 states and 1103 transitions. Second operand 8 states. [2020-09-25 12:26:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:04,956 INFO L93 Difference]: Finished difference Result 2695 states and 3495 transitions. [2020-09-25 12:26:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:26:04,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-09-25 12:26:04,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:04,966 INFO L225 Difference]: With dead ends: 2695 [2020-09-25 12:26:04,966 INFO L226 Difference]: Without dead ends: 1540 [2020-09-25 12:26:04,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:26:04,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-09-25 12:26:05,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1522. [2020-09-25 12:26:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-09-25 12:26:05,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1816 transitions. [2020-09-25 12:26:05,021 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1816 transitions. Word has length 184 [2020-09-25 12:26:05,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:05,021 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 1816 transitions. [2020-09-25 12:26:05,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1816 transitions. [2020-09-25 12:26:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 12:26:05,027 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:05,028 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:05,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:05,028 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:05,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:05,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1713485497, now seen corresponding path program 1 times [2020-09-25 12:26:05,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:05,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630614768] [2020-09-25 12:26:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:05,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:05,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:05,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:07,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:10,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:10,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 12:26:10,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:26:10,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:26:10,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:10,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:10,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:10,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 12:26:10,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 12:26:10,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:10,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:10,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:10,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:10,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:10,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:26:10,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:10,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:10,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:10,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:10,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:10,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:10,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:10,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:26:10,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:10,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 12:26:10,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:10,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:10,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:10,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:10,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:26:10,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:10,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630614768] [2020-09-25 12:26:10,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:10,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:26:10,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499728807] [2020-09-25 12:26:10,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:10,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:10,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:10,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:10,422 INFO L87 Difference]: Start difference. First operand 1522 states and 1816 transitions. Second operand 5 states. [2020-09-25 12:26:12,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:12,851 INFO L93 Difference]: Finished difference Result 4036 states and 4950 transitions. [2020-09-25 12:26:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:26:12,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 12:26:12,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:12,865 INFO L225 Difference]: With dead ends: 4036 [2020-09-25 12:26:12,865 INFO L226 Difference]: Without dead ends: 2381 [2020-09-25 12:26:12,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:26:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-09-25 12:26:12,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2288. [2020-09-25 12:26:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2020-09-25 12:26:12,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 2744 transitions. [2020-09-25 12:26:12,951 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 2744 transitions. Word has length 191 [2020-09-25 12:26:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:12,952 INFO L479 AbstractCegarLoop]: Abstraction has 2288 states and 2744 transitions. [2020-09-25 12:26:12,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 2744 transitions. [2020-09-25 12:26:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 12:26:12,963 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:12,963 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:12,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:12,964 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:12,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:12,964 INFO L82 PathProgramCache]: Analyzing trace with hash -755789642, now seen corresponding path program 1 times [2020-09-25 12:26:12,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:12,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695608481] [2020-09-25 12:26:12,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:15,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 12:26:18,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:26:18,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 12:26:18,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:26:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 12:26:18,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:18,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:18,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:18,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:26:18,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:18,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:26:18,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:18,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:26:18,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 12:26:18,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:26:18,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:18,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:26:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:26:18,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:18,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 12:26:18,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:26:18,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:18,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:26:18,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 12:26:18,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695608481] [2020-09-25 12:26:18,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:18,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:26:18,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012783742] [2020-09-25 12:26:18,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:26:18,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:18,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:26:18,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:26:18,720 INFO L87 Difference]: Start difference. First operand 2288 states and 2744 transitions. Second operand 11 states. [2020-09-25 12:26:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:22,977 INFO L93 Difference]: Finished difference Result 5723 states and 7216 transitions. [2020-09-25 12:26:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:26:22,978 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 200 [2020-09-25 12:26:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:22,989 INFO L225 Difference]: With dead ends: 5723 [2020-09-25 12:26:22,990 INFO L226 Difference]: Without dead ends: 2223 [2020-09-25 12:26:23,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:26:23,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2020-09-25 12:26:23,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2213. [2020-09-25 12:26:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2213 states. [2020-09-25 12:26:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 2600 transitions. [2020-09-25 12:26:23,064 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 2600 transitions. Word has length 200 [2020-09-25 12:26:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:23,065 INFO L479 AbstractCegarLoop]: Abstraction has 2213 states and 2600 transitions. [2020-09-25 12:26:23,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:26:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 2600 transitions. [2020-09-25 12:26:23,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 12:26:23,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:23,075 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:23,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:23,075 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:23,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:23,076 INFO L82 PathProgramCache]: Analyzing trace with hash 37270687, now seen corresponding path program 1 times [2020-09-25 12:26:23,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:23,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710017291] [2020-09-25 12:26:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:23,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:23,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking...