/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:29:12,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:29:12,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:29:12,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:29:12,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:29:12,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:29:12,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:29:12,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:29:12,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:29:12,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:29:12,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:29:12,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:29:12,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:29:12,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:29:12,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:29:12,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:29:12,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:29:12,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:29:12,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:29:12,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:29:12,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:29:12,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:29:12,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:29:12,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:29:12,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:29:12,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:29:12,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:29:12,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:29:12,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:29:12,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:29:12,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:29:12,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:29:12,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:29:12,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:29:12,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:29:12,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:29:12,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:29:12,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:29:12,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:29:12,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:29:12,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:29:12,169 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 13:29:12,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:29:12,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:29:12,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:29:12,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:29:12,207 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:29:12,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:29:12,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:29:12,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:29:12,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:29:12,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:29:12,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:29:12,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:29:12,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:29:12,208 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:29:12,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:29:12,209 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:29:12,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:29:12,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:29:12,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:29:12,210 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:29:12,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:29:12,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:29:12,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:29:12,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:29:12,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:29:12,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:29:12,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:29:12,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:29:12,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:29:12,212 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=0.4;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:29:12,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:29:12,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:29:12,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:29:12,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:29:12,706 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:29:12,707 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 13:29:12,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/960faded2/7031ad7ed6074d66b770b29a03a98e89/FLAG912bb3a86 [2020-09-25 13:29:13,435 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:29:13,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label34.c [2020-09-25 13:29:13,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/960faded2/7031ad7ed6074d66b770b29a03a98e89/FLAG912bb3a86 [2020-09-25 13:29:13,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/960faded2/7031ad7ed6074d66b770b29a03a98e89 [2020-09-25 13:29:13,691 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:29:13,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:29:13,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:13,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:29:13,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:29:13,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:13" (1/1) ... [2020-09-25 13:29:13,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601fc90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:13, skipping insertion in model container [2020-09-25 13:29:13,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:13" (1/1) ... [2020-09-25 13:29:13,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:29:13,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:29:14,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:14,407 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:29:14,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:14,604 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:29:14,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:14 WrapperNode [2020-09-25 13:29:14,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:14,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:29:14,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:29:14,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:29:14,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:14" (1/1) ... [2020-09-25 13:29:14,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:14" (1/1) ... [2020-09-25 13:29:14,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:14" (1/1) ... [2020-09-25 13:29:14,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:14" (1/1) ... [2020-09-25 13:29:14,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:14" (1/1) ... [2020-09-25 13:29:14,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:14" (1/1) ... [2020-09-25 13:29:14,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:14" (1/1) ... [2020-09-25 13:29:14,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:29:14,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:29:14,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:29:14,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:29:14,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:14" (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 13:29:14,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:29:14,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:29:14,893 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:29:14,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:29:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:29:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:29:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:29:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:29:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:29:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:29:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:29:16,195 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:29:16,196 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:29:16,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:16 BoogieIcfgContainer [2020-09-25 13:29:16,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:29:16,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:29:16,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:29:16,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:29:16,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:29:13" (1/3) ... [2020-09-25 13:29:16,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3062980c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:16, skipping insertion in model container [2020-09-25 13:29:16,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:14" (2/3) ... [2020-09-25 13:29:16,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3062980c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:16, skipping insertion in model container [2020-09-25 13:29:16,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:16" (3/3) ... [2020-09-25 13:29:16,215 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2020-09-25 13:29:16,227 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:29:16,239 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:29:16,262 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:29:16,296 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:29:16,296 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:29:16,296 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:29:16,297 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:29:16,297 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:29:16,297 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:29:16,297 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:29:16,297 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:29:16,330 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:29:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 13:29:16,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:16,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:16,355 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:16,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:16,364 INFO L82 PathProgramCache]: Analyzing trace with hash 319545741, now seen corresponding path program 1 times [2020-09-25 13:29:16,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:16,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634981865] [2020-09-25 13:29:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:16,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:18,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:21,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 13:29:21,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:29:21,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:29:21,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:21,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:21,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:21,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:29:21,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 13:29:21,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:29:21,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:21,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:22,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:22,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:22,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:29:22,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:22,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:22,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:29:22,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:22,065 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 13:29:22,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634981865] [2020-09-25 13:29:22,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:29:22,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:29:22,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006128770] [2020-09-25 13:29:22,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:29:22,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:22,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:29:22,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:29:22,102 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:29:24,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:24,269 INFO L93 Difference]: Finished difference Result 1338 states and 1736 transitions. [2020-09-25 13:29:24,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:29:24,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-25 13:29:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:24,308 INFO L225 Difference]: With dead ends: 1338 [2020-09-25 13:29:24,308 INFO L226 Difference]: Without dead ends: 739 [2020-09-25 13:29:24,320 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 13:29:24,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2020-09-25 13:29:24,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 664. [2020-09-25 13:29:24,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 13:29:24,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 13:29:24,457 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 133 [2020-09-25 13:29:24,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:24,458 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 13:29:24,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:29:24,459 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 13:29:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 13:29:24,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:24,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:24,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:29:24,469 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:24,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:24,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1171145692, now seen corresponding path program 1 times [2020-09-25 13:29:24,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:24,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484915753] [2020-09-25 13:29:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:24,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:26,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:29,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 13:29:29,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:29:29,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:29:29,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:29,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 13:29:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 13:29:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:29,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:29,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:29,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:29,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:29:29,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:29,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:29,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:29,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 13:29:29,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:29,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:29,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:29,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:29:29,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:29,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:29:29,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:29,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484915753] [2020-09-25 13:29:29,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:29,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:29,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148443000] [2020-09-25 13:29:29,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:29,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:29,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:29,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:29,879 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 5 states. [2020-09-25 13:29:31,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:31,895 INFO L93 Difference]: Finished difference Result 1688 states and 2060 transitions. [2020-09-25 13:29:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:31,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 13:29:31,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:31,903 INFO L225 Difference]: With dead ends: 1688 [2020-09-25 13:29:31,903 INFO L226 Difference]: Without dead ends: 1048 [2020-09-25 13:29:31,906 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 13:29:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-09-25 13:29:31,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 950. [2020-09-25 13:29:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-09-25 13:29:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1156 transitions. [2020-09-25 13:29:31,947 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1156 transitions. Word has length 154 [2020-09-25 13:29:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:31,948 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1156 transitions. [2020-09-25 13:29:31,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1156 transitions. [2020-09-25 13:29:31,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 13:29:31,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:31,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:31,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:29:31,955 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:31,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:31,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1950869366, now seen corresponding path program 1 times [2020-09-25 13:29:31,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:31,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478609494] [2020-09-25 13:29:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:31,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:32,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:32,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:32,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:36,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 13:29:36,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:29:36,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 13:29:36,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:36,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:29:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 13:29:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:29:36,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:37,689 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-09-25 13:29:37,894 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 51 [2020-09-25 13:29:38,161 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 50 [2020-09-25 13:29:38,452 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 46 [2020-09-25 13:29:38,685 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 42 [2020-09-25 13:29:38,899 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 38 [2020-09-25 13:29:39,100 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 34 [2020-09-25 13:29:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:39,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:39,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:39,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:29:39,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:39,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:39,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:39,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:39,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:39,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:39,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:39,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:39,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:39,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:39,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:29:39,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:39,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:39,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:39,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:39,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:39,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:39,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:39,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:39,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:39,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:29:39,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:39,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:29:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:39,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:29:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:29:39,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478609494] [2020-09-25 13:29:39,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:39,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:29:39,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734991487] [2020-09-25 13:29:39,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:29:39,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:39,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:29:39,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:29:39,573 INFO L87 Difference]: Start difference. First operand 950 states and 1156 transitions. Second operand 14 states. [2020-09-25 13:29:40,359 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-25 13:29:40,582 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-09-25 13:29:41,050 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 114 [2020-09-25 13:29:41,217 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-09-25 13:29:41,653 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 111 [2020-09-25 13:29:42,081 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 108 [2020-09-25 13:29:42,328 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-09-25 13:29:43,228 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 105 [2020-09-25 13:29:43,483 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-09-25 13:29:44,506 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2020-09-25 13:29:45,281 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2020-09-25 13:29:45,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:45,610 INFO L93 Difference]: Finished difference Result 2055 states and 2608 transitions. [2020-09-25 13:29:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:29:45,612 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 175 [2020-09-25 13:29:45,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:45,623 INFO L225 Difference]: With dead ends: 2055 [2020-09-25 13:29:45,623 INFO L226 Difference]: Without dead ends: 1129 [2020-09-25 13:29:45,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2020-09-25 13:29:45,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2020-09-25 13:29:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1031. [2020-09-25 13:29:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-09-25 13:29:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1248 transitions. [2020-09-25 13:29:45,666 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1248 transitions. Word has length 175 [2020-09-25 13:29:45,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:45,666 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1248 transitions. [2020-09-25 13:29:45,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:29:45,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1248 transitions. [2020-09-25 13:29:45,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 13:29:45,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:45,672 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:45,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:29:45,673 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:45,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:45,673 INFO L82 PathProgramCache]: Analyzing trace with hash -42825726, now seen corresponding path program 1 times [2020-09-25 13:29:45,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:45,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594422448] [2020-09-25 13:29:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:45,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:45,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:45,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:48,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:50,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 13:29:50,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:29:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:29:50,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:50,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 13:29:50,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 13:29:50,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:50,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:50,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:50,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:50,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:50,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:29:50,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:50,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:50,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:50,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:50,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:50,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:50,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 13:29:50,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 13:29:50,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:50,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:50,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:50,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:29:50,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:51,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594422448] [2020-09-25 13:29:51,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:51,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:51,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826054456] [2020-09-25 13:29:51,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:51,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:51,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:51,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:51,077 INFO L87 Difference]: Start difference. First operand 1031 states and 1248 transitions. Second operand 5 states. [2020-09-25 13:29:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:53,177 INFO L93 Difference]: Finished difference Result 2675 states and 3371 transitions. [2020-09-25 13:29:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:53,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 13:29:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:53,192 INFO L225 Difference]: With dead ends: 2675 [2020-09-25 13:29:53,192 INFO L226 Difference]: Without dead ends: 1668 [2020-09-25 13:29:53,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-09-25 13:29:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1601. [2020-09-25 13:29:53,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1601 states. [2020-09-25 13:29:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 1961 transitions. [2020-09-25 13:29:53,256 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 1961 transitions. Word has length 180 [2020-09-25 13:29:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:53,257 INFO L479 AbstractCegarLoop]: Abstraction has 1601 states and 1961 transitions. [2020-09-25 13:29:53,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 1961 transitions. [2020-09-25 13:29:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 13:29:53,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:53,265 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:53,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:29:53,266 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:53,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:53,268 INFO L82 PathProgramCache]: Analyzing trace with hash -479100559, now seen corresponding path program 1 times [2020-09-25 13:29:53,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:53,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063960426] [2020-09-25 13:29:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:53,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:56,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:56,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:58,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:58,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 13:29:58,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:29:58,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 13:29:58,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:58,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:29:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 13:29:58,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:29:58,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:58,896 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-09-25 13:29:59,075 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-09-25 13:29:59,208 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 38 [2020-09-25 13:29:59,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:59,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:59,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:59,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:59,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:29:59,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:59,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:59,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:59,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:59,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:59,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:59,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:59,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:29:59,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:59,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:59,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:59,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:59,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:59,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:59,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:59,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:29:59,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 13:29:59,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:59,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:29:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:59,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:29:59,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 13:29:59,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063960426] [2020-09-25 13:29:59,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:59,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 13:29:59,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48096023] [2020-09-25 13:29:59,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 13:29:59,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:59,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 13:29:59,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:29:59,959 INFO L87 Difference]: Start difference. First operand 1601 states and 1961 transitions. Second operand 17 states. [2020-09-25 13:30:00,969 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-09-25 13:30:01,359 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 115 [2020-09-25 13:30:02,165 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-09-25 13:30:02,525 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-25 13:30:03,601 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-09-25 13:30:04,061 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2020-09-25 13:30:04,314 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59