/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:25:49,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:25:49,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:25:49,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:25:49,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:25:49,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:25:49,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:25:49,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:25:49,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:25:49,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:25:49,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:25:49,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:25:49,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:25:49,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:25:49,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:25:49,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:25:49,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:25:49,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:25:49,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:25:49,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:25:49,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:25:49,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:25:49,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:25:49,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:25:49,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:25:49,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:25:49,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:25:49,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:25:49,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:25:49,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:25:49,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:25:49,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:25:49,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:25:49,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:25:49,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:25:49,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:25:49,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:25:49,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:25:49,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:25:49,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:25:49,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:25:49,173 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:25:49,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:25:49,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:25:49,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:25:49,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:25:49,227 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:25:49,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:25:49,228 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:25:49,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:25:49,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:25:49,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:25:49,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:25:49,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:25:49,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:25:49,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:25:49,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:25:49,231 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:25:49,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:25:49,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:25:49,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:25:49,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:25:49,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:25:49,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:49,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:25:49,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:25:49,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:25:49,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:25:49,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:25:49,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:25:49,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:25:49,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:25:49,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:25:49,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:25:49,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:25:49,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:25:49,731 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:25:49,733 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 12:25:49,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/202185522/097b7e29da7546368ad517c1f7a778b3/FLAG2987838ca [2020-09-25 12:25:50,477 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:25:50,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-25 12:25:50,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/202185522/097b7e29da7546368ad517c1f7a778b3/FLAG2987838ca [2020-09-25 12:25:50,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/202185522/097b7e29da7546368ad517c1f7a778b3 [2020-09-25 12:25:50,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:25:50,747 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:25:50,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:50,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:25:50,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:25:50,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:50" (1/1) ... [2020-09-25 12:25:50,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:50, skipping insertion in model container [2020-09-25 12:25:50,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:50" (1/1) ... [2020-09-25 12:25:50,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:25:50,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:25:51,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:51,312 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:25:51,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:51,584 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:25:51,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:51 WrapperNode [2020-09-25 12:25:51,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:51,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:25:51,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:25:51,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:25:51,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:51" (1/1) ... [2020-09-25 12:25:51,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:51" (1/1) ... [2020-09-25 12:25:51,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:51" (1/1) ... [2020-09-25 12:25:51,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:51" (1/1) ... [2020-09-25 12:25:51,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:51" (1/1) ... [2020-09-25 12:25:51,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:51" (1/1) ... [2020-09-25 12:25:51,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:51" (1/1) ... [2020-09-25 12:25:51,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:25:51,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:25:51,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:25:51,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:25:51,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:51,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:25:51,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:25:51,799 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:25:51,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:25:51,800 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:25:51,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:25:51,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:25:51,802 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:25:51,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:25:51,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:25:51,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:25:53,317 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:25:53,318 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:25:53,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:53 BoogieIcfgContainer [2020-09-25 12:25:53,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:25:53,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:25:53,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:25:53,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:25:53,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:25:50" (1/3) ... [2020-09-25 12:25:53,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:53, skipping insertion in model container [2020-09-25 12:25:53,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:51" (2/3) ... [2020-09-25 12:25:53,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:53, skipping insertion in model container [2020-09-25 12:25:53,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:53" (3/3) ... [2020-09-25 12:25:53,338 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label03.c [2020-09-25 12:25:53,350 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:25:53,361 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:25:53,384 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:25:53,420 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:25:53,421 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:25:53,421 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:25:53,421 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:25:53,421 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:25:53,421 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:25:53,421 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:25:53,422 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:25:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:25:53,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 12:25:53,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:53,469 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] [2020-09-25 12:25:53,469 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:53,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:53,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1813443015, now seen corresponding path program 1 times [2020-09-25 12:25:53,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:53,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159932049] [2020-09-25 12:25:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:53,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:53,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:54,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:54,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 12:25:54,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:25:54,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-09-25 12:25:54,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:55,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:55,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:55,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:25:55,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:25:55,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:25:55,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:55,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:55,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:25:55,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:55,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:25:55,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:55,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:55,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:55,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:55,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:25:55,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:55,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159932049] [2020-09-25 12:25:55,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:25:55,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:25:55,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978346914] [2020-09-25 12:25:55,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:25:55,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:55,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:25:55,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:25:55,240 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:25:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:57,273 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 12:25:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:25:57,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 12:25:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:57,302 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 12:25:57,302 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 12:25:57,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 12:25:57,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 12:25:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 12:25:57,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 12:25:57,418 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 55 [2020-09-25 12:25:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:57,419 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 12:25:57,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:25:57,419 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 12:25:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 12:25:57,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:57,427 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, 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] [2020-09-25 12:25:57,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:25:57,428 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:57,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:57,428 INFO L82 PathProgramCache]: Analyzing trace with hash -226140616, now seen corresponding path program 1 times [2020-09-25 12:25:57,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:57,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105869446] [2020-09-25 12:25:57,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:57,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:58,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:58,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:00,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 12:26:00,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3037 [2020-09-25 12:26:00,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:00,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:00,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:00,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 12:26:00,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:00,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:00,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:00,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:00,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:00,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:26:00,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:00,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:00,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:00,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:00,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:00,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:00,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:00,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:00,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:00,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:00,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 12:26:00,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:00,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:00,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:26:00,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:26:00,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105869446] [2020-09-25 12:26:00,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:00,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:26:00,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696617791] [2020-09-25 12:26:00,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:26:00,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:00,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:26:00,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:26:00,982 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 12:26:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:03,288 INFO L93 Difference]: Finished difference Result 1165 states and 1482 transitions. [2020-09-25 12:26:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:26:03,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-09-25 12:26:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:03,297 INFO L225 Difference]: With dead ends: 1165 [2020-09-25 12:26:03,297 INFO L226 Difference]: Without dead ends: 1163 [2020-09-25 12:26:03,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:03,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-25 12:26:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 851. [2020-09-25 12:26:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 12:26:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1111 transitions. [2020-09-25 12:26:03,350 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1111 transitions. Word has length 134 [2020-09-25 12:26:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:03,351 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1111 transitions. [2020-09-25 12:26:03,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:26:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1111 transitions. [2020-09-25 12:26:03,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 12:26:03,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:03,362 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:03,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:03,363 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:03,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:03,364 INFO L82 PathProgramCache]: Analyzing trace with hash -281265186, now seen corresponding path program 1 times [2020-09-25 12:26:03,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:03,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45618449] [2020-09-25 12:26:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:05,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:08,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:08,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-25 12:26:08,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:26:08,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 12:26:08,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:08,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:08,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:08,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:26:08,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-25 12:26:08,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:08,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:08,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:08,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:08,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:08,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:26:08,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:08,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:26:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:08,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:26:08,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:08,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:08,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:08,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:08,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:08,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:08,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 12:26:08,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:08,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:08,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:08,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:08,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:26:08,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:08,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:26:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:08,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:09,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:09,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:09,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 12:26:09,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-09-25 12:26:09,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:09,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 12:26:09,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 12:26:09,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45618449] [2020-09-25 12:26:09,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:09,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:26:09,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803810517] [2020-09-25 12:26:09,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:26:09,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:09,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:26:09,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:26:09,685 INFO L87 Difference]: Start difference. First operand 851 states and 1111 transitions. Second operand 9 states. [2020-09-25 12:26:13,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:13,318 INFO L93 Difference]: Finished difference Result 2360 states and 3191 transitions. [2020-09-25 12:26:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:26:13,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 263 [2020-09-25 12:26:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:13,338 INFO L225 Difference]: With dead ends: 2360 [2020-09-25 12:26:13,338 INFO L226 Difference]: Without dead ends: 1500 [2020-09-25 12:26:13,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:26:13,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2020-09-25 12:26:13,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1306. [2020-09-25 12:26:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1306 states. [2020-09-25 12:26:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1637 transitions. [2020-09-25 12:26:13,413 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1637 transitions. Word has length 263 [2020-09-25 12:26:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:13,417 INFO L479 AbstractCegarLoop]: Abstraction has 1306 states and 1637 transitions. [2020-09-25 12:26:13,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:26:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1637 transitions. [2020-09-25 12:26:13,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-25 12:26:13,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:13,427 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:13,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:13,427 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:13,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1969044888, now seen corresponding path program 1 times [2020-09-25 12:26:13,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:13,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369958031] [2020-09-25 12:26:13,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:13,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:15,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-25 12:26:18,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:26:18,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:26:18,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:18,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-09-25 12:26:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:18,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:18,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:18,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:26:18,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:18,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:18,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:18,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:18,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 12:26:18,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:18,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:26:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:18,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:26:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:19,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:19,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 12:26:19,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:19,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-25 12:26:19,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:19,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:19,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:19,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:19,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 12:26:19,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:26:19,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369958031] [2020-09-25 12:26:19,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:19,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:26:19,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118522228] [2020-09-25 12:26:19,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:26:19,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:19,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:26:19,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:19,262 INFO L87 Difference]: Start difference. First operand 1306 states and 1637 transitions. Second operand 7 states. [2020-09-25 12:26:21,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:21,606 INFO L93 Difference]: Finished difference Result 3119 states and 4048 transitions. [2020-09-25 12:26:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:26:21,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-09-25 12:26:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:21,620 INFO L225 Difference]: With dead ends: 3119 [2020-09-25 12:26:21,620 INFO L226 Difference]: Without dead ends: 1828 [2020-09-25 12:26:21,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:26:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-09-25 12:26:21,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1624. [2020-09-25 12:26:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1624 states. [2020-09-25 12:26:21,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2001 transitions. [2020-09-25 12:26:21,697 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2001 transitions. Word has length 269 [2020-09-25 12:26:21,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:21,698 INFO L479 AbstractCegarLoop]: Abstraction has 1624 states and 2001 transitions. [2020-09-25 12:26:21,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:26:21,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2001 transitions. [2020-09-25 12:26:21,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 12:26:21,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:21,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:21,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:21,707 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:21,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:21,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1451587462, now seen corresponding path program 1 times [2020-09-25 12:26:21,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:21,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375418818] [2020-09-25 12:26:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:21,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:21,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:22,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:24,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:24,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:25,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:25,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:25,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-25 12:26:26,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:26:26,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 12:26:26,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:26,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-25 12:26:26,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:26,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:26,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:26,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:26,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:26,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:26:26,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:26,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:26,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:27,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:27,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:27,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:27,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:27,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 12:26:27,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:27,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:27,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:27,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:26:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:27,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:27,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 12:26:27,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:27,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 12:26:27,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:27,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:27,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 12:26:27,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:26:27,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375418818] [2020-09-25 12:26:27,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:27,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:26:27,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898380148] [2020-09-25 12:26:27,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:26:27,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:27,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:26:27,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:26:27,644 INFO L87 Difference]: Start difference. First operand 1624 states and 2001 transitions. Second operand 10 states. [2020-09-25 12:26:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:32,066 INFO L93 Difference]: Finished difference Result 4682 states and 6412 transitions. [2020-09-25 12:26:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:26:32,066 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 279 [2020-09-25 12:26:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:32,096 INFO L225 Difference]: With dead ends: 4682 [2020-09-25 12:26:32,096 INFO L226 Difference]: Without dead ends: 3073 [2020-09-25 12:26:32,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-09-25 12:26:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2020-09-25 12:26:32,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2790. [2020-09-25 12:26:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2790 states. [2020-09-25 12:26:32,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3569 transitions. [2020-09-25 12:26:32,248 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3569 transitions. Word has length 279 [2020-09-25 12:26:32,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:32,249 INFO L479 AbstractCegarLoop]: Abstraction has 2790 states and 3569 transitions. [2020-09-25 12:26:32,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:26:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3569 transitions. [2020-09-25 12:26:32,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-09-25 12:26:32,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:32,265 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:26:32,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:32,265 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:32,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:32,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1322662894, now seen corresponding path program 1 times [2020-09-25 12:26:32,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:32,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586818714] [2020-09-25 12:26:32,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:32,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:32,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:36,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:36,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking...