/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:37:20,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:37:20,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:37:20,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:37:20,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:37:20,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:37:20,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:37:20,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:37:20,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:37:20,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:37:20,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:37:20,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:37:20,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:37:20,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:37:20,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:37:20,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:37:20,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:37:20,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:37:20,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:37:20,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:37:20,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:37:20,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:37:20,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:37:20,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:37:20,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:37:20,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:37:20,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:37:20,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:37:20,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:37:20,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:37:20,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:37:20,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:37:20,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:37:20,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:37:20,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:37:20,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:37:20,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:37:20,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:37:20,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:37:20,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:37:20,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:37:20,239 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 14:37:20,295 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:37:20,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:37:20,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:37:20,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:37:20,301 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:37:20,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:37:20,301 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:37:20,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:37:20,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:37:20,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:37:20,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:37:20,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:37:20,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:37:20,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:37:20,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:37:20,304 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:37:20,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:37:20,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:37:20,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:37:20,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:37:20,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:37:20,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:20,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:37:20,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:37:20,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:37:20,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:37:20,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:37:20,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:37:20,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:37:20,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:37:20,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:37:20,784 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:37:20,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:37:20,791 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:37:20,791 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:37:20,793 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 14:37:20,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f4fea428/d2bd748a43fe4fbb889b64e3db10c55e/FLAG2f37eff28 [2020-09-25 14:37:21,511 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:21,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 14:37:21,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f4fea428/d2bd748a43fe4fbb889b64e3db10c55e/FLAG2f37eff28 [2020-09-25 14:37:21,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f4fea428/d2bd748a43fe4fbb889b64e3db10c55e [2020-09-25 14:37:21,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:21,750 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:21,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:21,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:21,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:21,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:21" (1/1) ... [2020-09-25 14:37:21,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:21, skipping insertion in model container [2020-09-25 14:37:21,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:21" (1/1) ... [2020-09-25 14:37:21,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:21,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:22,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:22,333 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:22,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:22,595 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:22,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:22 WrapperNode [2020-09-25 14:37:22,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:22,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:22,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:22,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:22,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:22" (1/1) ... [2020-09-25 14:37:22,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:22" (1/1) ... [2020-09-25 14:37:22,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:22" (1/1) ... [2020-09-25 14:37:22,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:22" (1/1) ... [2020-09-25 14:37:22,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:22" (1/1) ... [2020-09-25 14:37:22,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:22" (1/1) ... [2020-09-25 14:37:22,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:22" (1/1) ... [2020-09-25 14:37:22,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:22,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:22,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:22,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:22,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:22" (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 14:37:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:37:24,172 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:37:24,172 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:37:24,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:24 BoogieIcfgContainer [2020-09-25 14:37:24,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:37:24,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:37:24,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:37:24,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:37:24,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:21" (1/3) ... [2020-09-25 14:37:24,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:24, skipping insertion in model container [2020-09-25 14:37:24,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:22" (2/3) ... [2020-09-25 14:37:24,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:24, skipping insertion in model container [2020-09-25 14:37:24,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:24" (3/3) ... [2020-09-25 14:37:24,202 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2020-09-25 14:37:24,214 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:37:24,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:37:24,254 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:37:24,296 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:37:24,297 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:37:24,297 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:37:24,298 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:37:24,298 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:37:24,298 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:37:24,298 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:37:24,298 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:37:24,339 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:37:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 14:37:24,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:24,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:24,359 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:24,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:24,365 INFO L82 PathProgramCache]: Analyzing trace with hash -857113145, now seen corresponding path program 1 times [2020-09-25 14:37:24,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:24,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 14:37:24,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:25,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:28,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:29,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:29,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 14:37:29,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:37:29,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:37:29,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:29,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:37:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:37:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:37:29,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:29,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:29,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:29,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:29,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:37:29,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:29,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:29,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:37:29,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:29,995 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 14:37:29,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 14:37:29,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:29,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:37:30,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450753610] [2020-09-25 14:37:30,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:37:30,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:30,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:37:30,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:37:30,030 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:32,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:32,283 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 14:37:32,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:32,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-09-25 14:37:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:32,334 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 14:37:32,334 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 14:37:32,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:32,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 14:37:32,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 14:37:32,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:37:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 14:37:32,491 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 110 [2020-09-25 14:37:32,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:32,493 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 14:37:32,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:32,493 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 14:37:32,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 14:37:32,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:32,502 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:32,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:32,503 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:32,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:32,503 INFO L82 PathProgramCache]: Analyzing trace with hash -431161361, now seen corresponding path program 1 times [2020-09-25 14:37:32,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:32,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844169429] [2020-09-25 14:37:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:32,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:33,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:34,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:34,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:35,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:36,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:37,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:37,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 14:37:37,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:37:37,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 14:37:37,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:37,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:37:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 14:37:37,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:37,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:37,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:37,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:37,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:37,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:37,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:37,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:37,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:37,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:37,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:37,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:37,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:37:37,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:37,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:37,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:37:37,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:37,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844169429] [2020-09-25 14:37:37,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:37,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:37:37,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050058349] [2020-09-25 14:37:37,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:37:37,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:37,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:37:37,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:37,820 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 6 states. [2020-09-25 14:37:40,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:40,823 INFO L93 Difference]: Finished difference Result 1877 states and 2385 transitions. [2020-09-25 14:37:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:37:40,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-09-25 14:37:40,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:40,845 INFO L225 Difference]: With dead ends: 1877 [2020-09-25 14:37:40,845 INFO L226 Difference]: Without dead ends: 1298 [2020-09-25 14:37:40,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:37:40,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2020-09-25 14:37:40,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1034. [2020-09-25 14:37:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-09-25 14:37:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1310 transitions. [2020-09-25 14:37:40,911 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1310 transitions. Word has length 131 [2020-09-25 14:37:40,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:40,912 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1310 transitions. [2020-09-25 14:37:40,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:37:40,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1310 transitions. [2020-09-25 14:37:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 14:37:40,919 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:40,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:40,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:37:40,920 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:40,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:40,921 INFO L82 PathProgramCache]: Analyzing trace with hash 39430160, now seen corresponding path program 1 times [2020-09-25 14:37:40,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:40,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411397099] [2020-09-25 14:37:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:40,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:41,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:41,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:41,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:41,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:41,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:42,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:45,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:45,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 14:37:45,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:37:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:37:45,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:45,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 14:37:45,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 14:37:45,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:46,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:46,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:46,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:46,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:46,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:46,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:46,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:46,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:46,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:46,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:46,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:37:46,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:46,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:37:46,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:46,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:46,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:37:46,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:46,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411397099] [2020-09-25 14:37:46,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:46,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:46,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225219049] [2020-09-25 14:37:46,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:46,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:46,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:46,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:46,236 INFO L87 Difference]: Start difference. First operand 1034 states and 1310 transitions. Second operand 5 states. [2020-09-25 14:37:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:48,261 INFO L93 Difference]: Finished difference Result 2483 states and 3245 transitions. [2020-09-25 14:37:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:48,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 14:37:48,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:48,274 INFO L225 Difference]: With dead ends: 2483 [2020-09-25 14:37:48,274 INFO L226 Difference]: Without dead ends: 998 [2020-09-25 14:37:48,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:48,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2020-09-25 14:37:48,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 988. [2020-09-25 14:37:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-09-25 14:37:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1231 transitions. [2020-09-25 14:37:48,331 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1231 transitions. Word has length 140 [2020-09-25 14:37:48,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:48,333 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1231 transitions. [2020-09-25 14:37:48,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:48,334 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1231 transitions. [2020-09-25 14:37:48,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 14:37:48,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:48,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:48,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:48,352 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:48,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:48,353 INFO L82 PathProgramCache]: Analyzing trace with hash -439956008, now seen corresponding path program 1 times [2020-09-25 14:37:48,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:48,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482541731] [2020-09-25 14:37:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:48,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:48,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:49,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:49,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:50,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:53,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 14:37:53,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:37:53,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:37:53,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:53,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 14:37:53,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 14:37:53,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:53,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:53,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:53,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:53,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:53,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:37:53,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:53,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:53,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:53,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:53,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:53,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:53,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:53,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:53,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:37:53,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:53,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 14:37:53,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:53,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:53,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:37:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:37:53,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482541731] [2020-09-25 14:37:53,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:53,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:53,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534236410] [2020-09-25 14:37:53,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:53,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:53,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:53,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:53,692 INFO L87 Difference]: Start difference. First operand 988 states and 1231 transitions. Second operand 5 states. [2020-09-25 14:37:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:55,579 INFO L93 Difference]: Finished difference Result 2547 states and 3289 transitions. [2020-09-25 14:37:55,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:55,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 14:37:55,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:55,591 INFO L225 Difference]: With dead ends: 2547 [2020-09-25 14:37:55,592 INFO L226 Difference]: Without dead ends: 1583 [2020-09-25 14:37:55,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:37:55,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-09-25 14:37:55,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1417. [2020-09-25 14:37:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1417 states. [2020-09-25 14:37:55,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1759 transitions. [2020-09-25 14:37:55,654 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1759 transitions. Word has length 147 [2020-09-25 14:37:55,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:55,655 INFO L479 AbstractCegarLoop]: Abstraction has 1417 states and 1759 transitions. [2020-09-25 14:37:55,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:55,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1759 transitions. [2020-09-25 14:37:55,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 14:37:55,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:55,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:55,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:37:55,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:55,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:55,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1912221460, now seen corresponding path program 1 times [2020-09-25 14:37:55,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:55,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288004331] [2020-09-25 14:37:55,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:55,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:00,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:00,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 14:38:00,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:38:00,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:38:00,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:00,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:00,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 14:38:00,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:38:00,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:00,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:00,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:00,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:00,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:00,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:38:00,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:00,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:00,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:00,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:00,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:00,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:00,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:00,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:38:00,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:38:00,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:00,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:00,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:00,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:38:00,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:38:00,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:38:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:00,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:00,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:00,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:38:00,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:00,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 14:38:00,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:00,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:38:00,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:38:01,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288004331] [2020-09-25 14:38:01,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:01,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:38:01,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652412276] [2020-09-25 14:38:01,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:38:01,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:01,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:38:01,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:38:01,018 INFO L87 Difference]: Start difference. First operand 1417 states and 1759 transitions. Second operand 7 states. [2020-09-25 14:38:03,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:03,001 INFO L93 Difference]: Finished difference Result 3348 states and 4316 transitions. [2020-09-25 14:38:03,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:38:03,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-25 14:38:03,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:03,017 INFO L225 Difference]: With dead ends: 3348 [2020-09-25 14:38:03,018 INFO L226 Difference]: Without dead ends: 1955 [2020-09-25 14:38:03,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:38:03,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2020-09-25 14:38:03,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1588. [2020-09-25 14:38:03,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1588 states. [2020-09-25 14:38:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 1996 transitions. [2020-09-25 14:38:03,093 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 1996 transitions. Word has length 169 [2020-09-25 14:38:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:03,093 INFO L479 AbstractCegarLoop]: Abstraction has 1588 states and 1996 transitions. [2020-09-25 14:38:03,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:38:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 1996 transitions. [2020-09-25 14:38:03,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 14:38:03,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:03,101 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:03,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:38:03,102 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:03,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:03,102 INFO L82 PathProgramCache]: Analyzing trace with hash 636764435, now seen corresponding path program 1 times [2020-09-25 14:38:03,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:03,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962285462] [2020-09-25 14:38:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:03,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:04,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:08,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 14:38:08,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:38:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 14:38:08,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:08,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-25 14:38:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:38:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:08,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:08,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:08,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:08,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:08,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:08,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:08,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:08,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:08,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:08,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:38:08,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:08,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:38:08,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:08,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:08,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:08,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:08,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:08,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 14:38:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:08,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:08,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:38:08,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:08,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 14:38:08,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:08,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:08,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:08,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:38:08,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 14:38:08,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962285462] [2020-09-25 14:38:08,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:08,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:08,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664246954] [2020-09-25 14:38:08,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:08,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:08,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:08,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:08,453 INFO L87 Difference]: Start difference. First operand 1588 states and 1996 transitions. Second operand 5 states.