/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:31:51,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:31:51,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:31:51,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:31:51,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:31:51,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:31:51,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:31:51,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:31:51,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:31:51,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:31:51,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:31:51,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:31:51,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:31:51,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:31:51,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:31:51,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:31:51,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:31:51,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:31:51,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:31:51,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:31:51,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:31:51,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:31:51,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:31:51,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:31:51,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:31:51,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:31:51,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:31:51,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:31:51,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:31:51,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:31:51,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:31:51,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:31:51,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:31:51,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:31:51,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:31:51,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:31:51,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:31:51,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:31:51,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:31:51,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:31:51,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:31:51,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:31:51,241 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:31:51,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:31:51,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:31:51,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:31:51,244 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:31:51,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:31:51,244 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:31:51,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:31:51,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:31:51,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:31:51,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:31:51,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:31:51,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:31:51,247 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:31:51,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:31:51,248 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:31:51,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:31:51,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:31:51,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:31:51,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:31:51,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:31:51,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:31:51,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:31:51,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:31:51,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:31:51,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:31:51,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:31:51,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:31:51,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:31:51,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:31:51,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:31:51,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:31:51,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:31:51,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:31:51,750 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:31:51,751 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test25-2.c [2020-09-25 05:31:51,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/439ce13db/1cd34186a6484b899c8b7ede24bd887b/FLAGc4b7c22e7 [2020-09-25 05:31:52,359 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:31:52,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test25-2.c [2020-09-25 05:31:52,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/439ce13db/1cd34186a6484b899c8b7ede24bd887b/FLAGc4b7c22e7 [2020-09-25 05:31:52,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/439ce13db/1cd34186a6484b899c8b7ede24bd887b [2020-09-25 05:31:52,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:31:52,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:31:52,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:31:52,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:31:52,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:31:52,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:31:52" (1/1) ... [2020-09-25 05:31:52,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3330734f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:52, skipping insertion in model container [2020-09-25 05:31:52,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:31:52" (1/1) ... [2020-09-25 05:31:52,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:31:52,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:31:52,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:31:53,008 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:31:53,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:31:53,129 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:31:53,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:53 WrapperNode [2020-09-25 05:31:53,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:31:53,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:31:53,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:31:53,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:31:53,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:53" (1/1) ... [2020-09-25 05:31:53,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:53" (1/1) ... [2020-09-25 05:31:53,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:53" (1/1) ... [2020-09-25 05:31:53,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:53" (1/1) ... [2020-09-25 05:31:53,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:53" (1/1) ... [2020-09-25 05:31:53,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:53" (1/1) ... [2020-09-25 05:31:53,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:53" (1/1) ... [2020-09-25 05:31:53,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:31:53,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:31:53,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:31:53,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:31:53,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:31:53,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:31:53,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:31:53,277 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 05:31:53,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:31:53,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:31:53,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:31:53,277 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 05:31:53,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:31:53,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:31:53,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:31:53,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 05:31:53,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:31:53,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:31:53,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:31:53,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:31:53,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:31:53,685 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:31:53,685 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 05:31:53,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:31:53 BoogieIcfgContainer [2020-09-25 05:31:53,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:31:53,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:31:53,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:31:53,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:31:53,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:31:52" (1/3) ... [2020-09-25 05:31:53,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61678532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:31:53, skipping insertion in model container [2020-09-25 05:31:53,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:31:53" (2/3) ... [2020-09-25 05:31:53,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61678532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:31:53, skipping insertion in model container [2020-09-25 05:31:53,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:31:53" (3/3) ... [2020-09-25 05:31:53,701 INFO L109 eAbstractionObserver]: Analyzing ICFG test25-2.c [2020-09-25 05:31:53,714 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:31:53,724 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:31:53,748 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:31:53,777 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:31:53,777 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:31:53,777 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:31:53,778 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:31:53,778 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:31:53,778 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:31:53,778 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:31:53,778 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:31:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-09-25 05:31:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 05:31:53,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:53,814 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] [2020-09-25 05:31:53,814 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:53,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:53,821 INFO L82 PathProgramCache]: Analyzing trace with hash 144198137, now seen corresponding path program 1 times [2020-09-25 05:31:53,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:53,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736863050] [2020-09-25 05:31:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:54,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:54,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:54,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:54,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 05:31:54,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:54,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-25 05:31:54,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:54,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 05:31:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:31:54,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:54,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:54,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:54,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:31:54,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:54,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:31:54,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:54,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:54,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:54,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:31:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:54,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:54,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:54,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:31:54,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:54,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:31:54,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:54,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:54,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:31:54,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:54,492 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 05:31:54,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736863050] [2020-09-25 05:31:54,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:54,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:31:54,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629920668] [2020-09-25 05:31:54,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:31:54,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:54,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:31:54,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:54,529 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-09-25 05:31:54,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:54,772 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-09-25 05:31:54,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:31:54,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-09-25 05:31:54,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:54,791 INFO L225 Difference]: With dead ends: 124 [2020-09-25 05:31:54,792 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 05:31:54,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:31:54,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 05:31:54,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 05:31:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 05:31:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-25 05:31:54,874 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 44 [2020-09-25 05:31:54,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:54,876 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-25 05:31:54,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:31:54,877 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-25 05:31:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 05:31:54,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:54,881 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] [2020-09-25 05:31:54,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:31:54,883 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:54,884 INFO L82 PathProgramCache]: Analyzing trace with hash 608042528, now seen corresponding path program 1 times [2020-09-25 05:31:54,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:54,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102373770] [2020-09-25 05:31:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:54,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:55,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:55,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 05:31:55,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:55,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-09-25 05:31:55,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:55,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:31:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:31:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 05:31:55,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:55,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:55,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:55,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:55,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:31:55,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:55,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:31:55,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:55,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:55,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:55,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 05:31:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:55,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:55,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:55,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:31:55,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:55,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:31:55,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:55,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:31:55,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:55,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:55,800 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 05:31:55,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102373770] [2020-09-25 05:31:55,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:31:55,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:31:55,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568553172] [2020-09-25 05:31:55,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:31:55,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:55,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:31:55,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:31:55,806 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 4 states. [2020-09-25 05:31:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:55,952 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2020-09-25 05:31:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:31:55,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 05:31:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:55,954 INFO L225 Difference]: With dead ends: 104 [2020-09-25 05:31:55,954 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 05:31:55,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:31:55,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 05:31:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2020-09-25 05:31:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 05:31:55,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-09-25 05:31:55,966 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 46 [2020-09-25 05:31:55,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:55,966 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-09-25 05:31:55,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:31:55,967 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-09-25 05:31:55,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 05:31:55,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:55,969 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] [2020-09-25 05:31:55,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:31:55,970 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:55,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:55,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1644606330, now seen corresponding path program 1 times [2020-09-25 05:31:55,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:55,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475839831] [2020-09-25 05:31:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:56,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:57,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:57,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 05:31:57,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:31:57,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1407 [2020-09-25 05:31:57,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:57,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:57,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:31:57,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:31:57,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 05:31:57,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:31:57,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:31:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:57,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:57,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:57,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:31:57,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:57,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:31:57,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:57,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:31:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:57,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:31:57,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 05:31:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:57,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:57,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:31:57,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:31:57,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:31:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:31:57,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:31:57,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:31:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:31:57,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:31:57,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:31:57,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:31:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:31:57,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475839831] [2020-09-25 05:31:57,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:31:57,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:31:57,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421395164] [2020-09-25 05:31:57,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:31:57,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:31:57,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:31:57,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:31:57,492 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 6 states. [2020-09-25 05:31:57,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:31:57,729 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2020-09-25 05:31:57,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:31:57,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-25 05:31:57,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:31:57,732 INFO L225 Difference]: With dead ends: 114 [2020-09-25 05:31:57,732 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 05:31:57,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:31:57,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 05:31:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2020-09-25 05:31:57,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 05:31:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-09-25 05:31:57,742 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 56 [2020-09-25 05:31:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:31:57,742 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-09-25 05:31:57,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:31:57,743 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-09-25 05:31:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 05:31:57,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:31:57,745 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:31:57,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:31:57,745 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:31:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:31:57,746 INFO L82 PathProgramCache]: Analyzing trace with hash 278397012, now seen corresponding path program 2 times [2020-09-25 05:31:57,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:31:57,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649267186] [2020-09-25 05:31:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:31:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:31:57,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:31:57,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:00,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:00,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:32:00,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:00,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2429 [2020-09-25 05:32:00,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:00,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:32:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:32:00,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:32:00,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:00,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:00,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:00,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:00,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:00,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:00,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:32:00,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:00,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:00,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:00,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:00,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 05:32:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:00,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:00,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:00,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:32:00,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:32:00,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:00,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:00,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:32:00,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:00,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:00,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649267186] [2020-09-25 05:32:00,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:00,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:32:00,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532195938] [2020-09-25 05:32:00,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:32:00,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:00,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:32:00,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:32:00,322 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 8 states. [2020-09-25 05:32:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:00,542 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2020-09-25 05:32:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:32:00,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-25 05:32:00,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:00,544 INFO L225 Difference]: With dead ends: 124 [2020-09-25 05:32:00,544 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 05:32:00,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:32:00,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 05:32:00,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2020-09-25 05:32:00,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 05:32:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-09-25 05:32:00,554 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 66 [2020-09-25 05:32:00,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:00,554 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-09-25 05:32:00,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:32:00,555 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-09-25 05:32:00,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 05:32:00,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:00,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:00,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:32:00,557 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:00,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:00,557 INFO L82 PathProgramCache]: Analyzing trace with hash 767198382, now seen corresponding path program 3 times [2020-09-25 05:32:00,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:00,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257347329] [2020-09-25 05:32:00,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:00,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:00,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:04,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:04,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:32:04,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:04,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3728 [2020-09-25 05:32:04,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:04,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:32:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:32:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:32:04,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:04,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:04,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:04,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:04,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:04,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:32:04,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:04,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 05:32:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:04,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:04,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:04,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:32:04,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:04,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:32:04,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:04,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:32:04,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:04,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:04,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257347329] [2020-09-25 05:32:04,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:04,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:32:04,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296390303] [2020-09-25 05:32:04,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:32:04,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:04,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:32:04,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:32:04,465 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 10 states. [2020-09-25 05:32:04,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:04,762 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2020-09-25 05:32:04,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:32:04,763 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2020-09-25 05:32:04,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:04,764 INFO L225 Difference]: With dead ends: 134 [2020-09-25 05:32:04,765 INFO L226 Difference]: Without dead ends: 99 [2020-09-25 05:32:04,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:32:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-25 05:32:04,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2020-09-25 05:32:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 05:32:04,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-09-25 05:32:04,779 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 76 [2020-09-25 05:32:04,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:04,785 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-09-25 05:32:04,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:32:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-09-25 05:32:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 05:32:04,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:04,787 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:04,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:32:04,788 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:04,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:04,788 INFO L82 PathProgramCache]: Analyzing trace with hash 216981640, now seen corresponding path program 4 times [2020-09-25 05:32:04,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:04,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395032682] [2020-09-25 05:32:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:04,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:09,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:09,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 05:32:09,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:09,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4718 [2020-09-25 05:32:09,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:09,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:09,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:32:09,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 05:32:09,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:32:09,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:09,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:09,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:09,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:09,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:09,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:09,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:09,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:09,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:09,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:09,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:09,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 05:32:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:09,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:09,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:09,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:32:09,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:09,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:32:09,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:09,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:09,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:32:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 05:32:09,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395032682] [2020-09-25 05:32:09,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:09,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 05:32:09,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085154789] [2020-09-25 05:32:09,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:32:09,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:09,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:32:09,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:32:09,825 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 9 states. [2020-09-25 05:32:10,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:10,213 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2020-09-25 05:32:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:32:10,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-09-25 05:32:10,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:10,215 INFO L225 Difference]: With dead ends: 112 [2020-09-25 05:32:10,215 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 05:32:10,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:32:10,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 05:32:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2020-09-25 05:32:10,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 05:32:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-09-25 05:32:10,231 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 86 [2020-09-25 05:32:10,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:10,231 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-09-25 05:32:10,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:32:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-09-25 05:32:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 05:32:10,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:10,236 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 05:32:10,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:32:10,236 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:10,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:10,242 INFO L82 PathProgramCache]: Analyzing trace with hash 49337248, now seen corresponding path program 1 times [2020-09-25 05:32:10,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:10,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603902476] [2020-09-25 05:32:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:10,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:12,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:15,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:15,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 05:32:15,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:32:15,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:32:15,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:15,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:15,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 05:32:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:32:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:32:15,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:15,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:15,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:15,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:15,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:15,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:32:15,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:15,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:15,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:15,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:15,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:15,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:15,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-25 05:32:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:15,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:15,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:15,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:32:15,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:15,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:32:15,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:15,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:32:15,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:15,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 05:32:15,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603902476] [2020-09-25 05:32:15,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:15,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 05:32:15,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543963740] [2020-09-25 05:32:15,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 05:32:15,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:15,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 05:32:15,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:32:15,525 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 12 states. [2020-09-25 05:32:15,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:15,900 INFO L93 Difference]: Finished difference Result 148 states and 150 transitions. [2020-09-25 05:32:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 05:32:15,900 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-09-25 05:32:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:15,902 INFO L225 Difference]: With dead ends: 148 [2020-09-25 05:32:15,902 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 05:32:15,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 05:32:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 05:32:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 103. [2020-09-25 05:32:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 05:32:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2020-09-25 05:32:15,919 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 92 [2020-09-25 05:32:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:15,920 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2020-09-25 05:32:15,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 05:32:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2020-09-25 05:32:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 05:32:15,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:15,923 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-09-25 05:32:15,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:32:15,924 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:15,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:15,924 INFO L82 PathProgramCache]: Analyzing trace with hash 213269370, now seen corresponding path program 2 times [2020-09-25 05:32:15,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:15,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715474628] [2020-09-25 05:32:15,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:15,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:16,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:19,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:20,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:20,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 05:32:20,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:32:20,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 05:32:20,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:20,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:32:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-25 05:32:20,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:32:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:21,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:21,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:21,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:21,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:21,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:21,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:32:21,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:21,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:21,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:21,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-25 05:32:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:21,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:21,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:32:21,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:32:21,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:21,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:32:21,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:21,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-09-25 05:32:21,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715474628] [2020-09-25 05:32:21,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:21,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:32:21,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242553148] [2020-09-25 05:32:21,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:32:21,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:21,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:32:21,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:32:21,183 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 10 states. [2020-09-25 05:32:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:21,540 INFO L93 Difference]: Finished difference Result 128 states and 129 transitions. [2020-09-25 05:32:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:32:21,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2020-09-25 05:32:21,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:21,543 INFO L225 Difference]: With dead ends: 128 [2020-09-25 05:32:21,543 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 05:32:21,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:32:21,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 05:32:21,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2020-09-25 05:32:21,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 05:32:21,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2020-09-25 05:32:21,560 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 102 [2020-09-25 05:32:21,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:21,561 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2020-09-25 05:32:21,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:32:21,561 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2020-09-25 05:32:21,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 05:32:21,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:21,563 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 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] [2020-09-25 05:32:21,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:32:21,564 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:21,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:21,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1007636206, now seen corresponding path program 3 times [2020-09-25 05:32:21,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:21,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217229493] [2020-09-25 05:32:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:21,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:25,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:26,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:26,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 05:32:26,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:32:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:32:26,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:26,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 05:32:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:32:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 05:32:26,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:26,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:26,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:26,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:26,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:26,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:26,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:32:26,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:26,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:26,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:26,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:26,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:26,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 05:32:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:26,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:26,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:26,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:32:26,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:26,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:32:26,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:26,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:32:26,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:26,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 05:32:26,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217229493] [2020-09-25 05:32:26,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:26,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 05:32:26,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618669563] [2020-09-25 05:32:26,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 05:32:26,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:26,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 05:32:26,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:32:26,782 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 14 states. [2020-09-25 05:32:27,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:27,096 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2020-09-25 05:32:27,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 05:32:27,097 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 108 [2020-09-25 05:32:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:27,098 INFO L225 Difference]: With dead ends: 170 [2020-09-25 05:32:27,098 INFO L226 Difference]: Without dead ends: 127 [2020-09-25 05:32:27,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-09-25 05:32:27,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-25 05:32:27,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-09-25 05:32:27,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 05:32:27,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2020-09-25 05:32:27,105 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 108 [2020-09-25 05:32:27,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:27,105 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2020-09-25 05:32:27,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 05:32:27,105 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2020-09-25 05:32:27,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 05:32:27,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:27,107 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 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] [2020-09-25 05:32:27,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:32:27,107 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:27,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:27,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1397807892, now seen corresponding path program 4 times [2020-09-25 05:32:27,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:27,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354667372] [2020-09-25 05:32:27,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:31,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:32,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:32,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 05:32:32,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:32:32,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:32:32,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:32,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 05:32:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-25 05:32:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:32:32,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:32:32,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:32,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:32,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:32,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:32,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:32:32,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:32,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:32,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:32,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:32,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 05:32:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:32,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:32,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:32:32,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:32,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:32:32,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:32,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:32:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-09-25 05:32:32,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354667372] [2020-09-25 05:32:32,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:32,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 05:32:32,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583062791] [2020-09-25 05:32:32,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 05:32:32,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:32,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 05:32:32,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:32:32,341 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 11 states. [2020-09-25 05:32:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:32,864 INFO L93 Difference]: Finished difference Result 144 states and 145 transitions. [2020-09-25 05:32:32,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:32:32,865 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 118 [2020-09-25 05:32:32,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:32,866 INFO L225 Difference]: With dead ends: 144 [2020-09-25 05:32:32,867 INFO L226 Difference]: Without dead ends: 128 [2020-09-25 05:32:32,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-09-25 05:32:32,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-25 05:32:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2020-09-25 05:32:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 05:32:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2020-09-25 05:32:32,876 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 118 [2020-09-25 05:32:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:32,876 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2020-09-25 05:32:32,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 05:32:32,876 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2020-09-25 05:32:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 05:32:32,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:32,878 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:32,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:32:32,878 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:32,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:32,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1537393404, now seen corresponding path program 5 times [2020-09-25 05:32:32,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:32,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143318226] [2020-09-25 05:32:32,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:32,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:33,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:37,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:37,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:37,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 05:32:37,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:32:37,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 05:32:37,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:37,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 05:32:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:32:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 05:32:37,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:38,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:38,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:38,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:38,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:38,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:38,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 05:32:38,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:38,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:32:38,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:32:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:38,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:38,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:38,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:32:38,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:32:38,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:38,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:32:38,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:38,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 05:32:38,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143318226] [2020-09-25 05:32:38,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:38,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:32:38,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592305210] [2020-09-25 05:32:38,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:32:38,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:38,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:32:38,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:32:38,161 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 16 states. [2020-09-25 05:32:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:38,572 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2020-09-25 05:32:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 05:32:38,573 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 124 [2020-09-25 05:32:38,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:38,574 INFO L225 Difference]: With dead ends: 192 [2020-09-25 05:32:38,574 INFO L226 Difference]: Without dead ends: 143 [2020-09-25 05:32:38,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-09-25 05:32:38,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-25 05:32:38,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 135. [2020-09-25 05:32:38,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 05:32:38,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2020-09-25 05:32:38,588 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 124 [2020-09-25 05:32:38,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:38,588 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2020-09-25 05:32:38,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:32:38,588 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2020-09-25 05:32:38,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 05:32:38,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:38,590 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:38,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:32:38,590 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:38,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1350352094, now seen corresponding path program 6 times [2020-09-25 05:32:38,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:38,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127715995] [2020-09-25 05:32:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:38,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking...