/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/Problem02_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:32:32,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:32:32,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:32:32,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:32:32,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:32:32,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:32:32,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:32:32,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:32:32,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:32:32,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:32:32,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:32:32,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:32:32,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:32:32,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:32:32,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:32:32,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:32:32,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:32:32,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:32:32,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:32:32,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:32:32,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:32:32,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:32:32,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:32:32,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:32:32,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:32:32,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:32:32,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:32:32,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:32:32,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:32:32,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:32:32,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:32:32,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:32:32,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:32:32,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:32:32,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:32:32,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:32:32,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:32:32,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:32:32,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:32:32,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:32:32,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:32:32,740 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 13:32:32,790 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:32:32,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:32:32,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:32:32,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:32:32,792 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:32:32,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:32:32,793 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:32:32,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:32:32,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:32:32,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:32:32,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:32:32,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:32:32,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:32:32,796 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:32:32,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:32:32,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:32:32,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:32:32,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:32:32,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:32:32,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:32:32,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:32:32,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:32,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:32:32,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:32:32,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:32:32,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:32:32,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:32:32,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:32:32,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:32:32,799 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 13:32:33,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:32:33,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:32:33,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:32:33,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:32:33,270 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:32:33,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 13:32:33,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9766d1d5b/701bd6c285244871a3ce42d3dda786a7/FLAG97d47c55e [2020-09-25 13:32:34,029 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:32:34,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 13:32:34,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9766d1d5b/701bd6c285244871a3ce42d3dda786a7/FLAG97d47c55e [2020-09-25 13:32:34,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9766d1d5b/701bd6c285244871a3ce42d3dda786a7 [2020-09-25 13:32:34,272 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:32:34,278 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:32:34,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:34,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:32:34,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:32:34,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:34" (1/1) ... [2020-09-25 13:32:34,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5c20e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:34, skipping insertion in model container [2020-09-25 13:32:34,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:34" (1/1) ... [2020-09-25 13:32:34,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:32:34,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:32:34,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:34,818 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:32:35,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:35,089 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:32:35,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:35 WrapperNode [2020-09-25 13:32:35,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:35,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:32:35,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:32:35,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:32:35,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:35" (1/1) ... [2020-09-25 13:32:35,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:35" (1/1) ... [2020-09-25 13:32:35,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:35" (1/1) ... [2020-09-25 13:32:35,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:35" (1/1) ... [2020-09-25 13:32:35,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:35" (1/1) ... [2020-09-25 13:32:35,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:35" (1/1) ... [2020-09-25 13:32:35,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:35" (1/1) ... [2020-09-25 13:32:35,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:32:35,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:32:35,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:32:35,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:32:35,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:35" (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 13:32:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:32:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:32:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:32:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:32:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:32:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:32:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:32:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:32:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:32:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:32:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:32:36,667 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:32:36,667 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:32:36,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:36 BoogieIcfgContainer [2020-09-25 13:32:36,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:32:36,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:32:36,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:32:36,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:32:36,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:32:34" (1/3) ... [2020-09-25 13:32:36,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506743ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:36, skipping insertion in model container [2020-09-25 13:32:36,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:35" (2/3) ... [2020-09-25 13:32:36,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506743ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:36, skipping insertion in model container [2020-09-25 13:32:36,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:36" (3/3) ... [2020-09-25 13:32:36,688 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2020-09-25 13:32:36,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:32:36,711 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:32:36,735 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:32:36,774 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:32:36,774 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:32:36,774 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:32:36,775 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:32:36,775 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:32:36,775 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:32:36,775 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:32:36,775 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:32:36,814 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:32:36,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 13:32:36,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:36,837 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] [2020-09-25 13:32:36,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:36,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:36,849 INFO L82 PathProgramCache]: Analyzing trace with hash -551630175, now seen corresponding path program 1 times [2020-09-25 13:32:36,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:36,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873077009] [2020-09-25 13:32:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:37,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:37,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:38,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:38,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:40,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:42,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 13:32:42,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:32:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 13:32:42,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:42,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:32:42,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 13:32:42,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:32:42,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:42,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:42,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:42,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:42,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:32:42,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:42,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:32:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:42,560 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 13:32:42,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873077009] [2020-09-25 13:32:42,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:32:42,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:32:42,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078445107] [2020-09-25 13:32:42,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:42,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:42,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:42,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:42,592 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 13:32:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:45,919 INFO L93 Difference]: Finished difference Result 1430 states and 2024 transitions. [2020-09-25 13:32:45,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:32:45,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-25 13:32:45,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:45,958 INFO L225 Difference]: With dead ends: 1430 [2020-09-25 13:32:45,958 INFO L226 Difference]: Without dead ends: 847 [2020-09-25 13:32:45,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:32:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-09-25 13:32:46,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 775. [2020-09-25 13:32:46,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2020-09-25 13:32:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 947 transitions. [2020-09-25 13:32:46,107 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 947 transitions. Word has length 126 [2020-09-25 13:32:46,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:46,109 INFO L479 AbstractCegarLoop]: Abstraction has 775 states and 947 transitions. [2020-09-25 13:32:46,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 947 transitions. [2020-09-25 13:32:46,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 13:32:46,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:46,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:46,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:32:46,127 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:46,128 INFO L82 PathProgramCache]: Analyzing trace with hash 830786714, now seen corresponding path program 1 times [2020-09-25 13:32:46,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:46,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015002784] [2020-09-25 13:32:46,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:46,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:47,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:47,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:48,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:51,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:51,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 13:32:51,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:32:51,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:32:51,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:51,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:32:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 13:32:51,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:51,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:51,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:51,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:51,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:51,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:51,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:32:51,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:51,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 13:32:51,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:51,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:51,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:51,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:32:51,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:51,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 13:32:51,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:51,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:32:51,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:51,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015002784] [2020-09-25 13:32:51,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:51,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:32:51,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825054005] [2020-09-25 13:32:51,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:32:51,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:51,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:32:51,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:32:51,544 INFO L87 Difference]: Start difference. First operand 775 states and 947 transitions. Second operand 6 states. [2020-09-25 13:32:53,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:53,827 INFO L93 Difference]: Finished difference Result 2072 states and 2615 transitions. [2020-09-25 13:32:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:53,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2020-09-25 13:32:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:53,843 INFO L225 Difference]: With dead ends: 2072 [2020-09-25 13:32:53,843 INFO L226 Difference]: Without dead ends: 1319 [2020-09-25 13:32:53,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:32:53,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-09-25 13:32:53,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1278. [2020-09-25 13:32:53,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2020-09-25 13:32:53,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1598 transitions. [2020-09-25 13:32:53,908 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1598 transitions. Word has length 143 [2020-09-25 13:32:53,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:53,909 INFO L479 AbstractCegarLoop]: Abstraction has 1278 states and 1598 transitions. [2020-09-25 13:32:53,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:32:53,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1598 transitions. [2020-09-25 13:32:53,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 13:32:53,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:53,915 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:53,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:32:53,916 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:53,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:53,916 INFO L82 PathProgramCache]: Analyzing trace with hash 678126162, now seen corresponding path program 1 times [2020-09-25 13:32:53,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:53,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791674905] [2020-09-25 13:32:53,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:54,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:58,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:58,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 13:32:58,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:32:58,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:32:58,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:58,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 13:32:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 13:32:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:59,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:59,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:59,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:32:59,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:59,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:59,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:59,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:59,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:59,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:59,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:59,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:32:59,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:59,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:59,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:32:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:59,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791674905] [2020-09-25 13:32:59,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:59,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:59,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205949041] [2020-09-25 13:32:59,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:59,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:59,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:59,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:59,228 INFO L87 Difference]: Start difference. First operand 1278 states and 1598 transitions. Second operand 5 states. [2020-09-25 13:33:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:01,227 INFO L93 Difference]: Finished difference Result 3004 states and 3855 transitions. [2020-09-25 13:33:01,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:01,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-25 13:33:01,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:01,240 INFO L225 Difference]: With dead ends: 3004 [2020-09-25 13:33:01,241 INFO L226 Difference]: Without dead ends: 1748 [2020-09-25 13:33:01,246 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 13:33:01,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2020-09-25 13:33:01,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1736. [2020-09-25 13:33:01,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1736 states. [2020-09-25 13:33:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2215 transitions. [2020-09-25 13:33:01,305 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2215 transitions. Word has length 155 [2020-09-25 13:33:01,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:01,306 INFO L479 AbstractCegarLoop]: Abstraction has 1736 states and 2215 transitions. [2020-09-25 13:33:01,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2215 transitions. [2020-09-25 13:33:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 13:33:01,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:01,313 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:01,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:01,314 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:01,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:01,314 INFO L82 PathProgramCache]: Analyzing trace with hash -221683794, now seen corresponding path program 1 times [2020-09-25 13:33:01,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:01,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848780565] [2020-09-25 13:33:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:01,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:01,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:02,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:03,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:04,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:04,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:05,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:06,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:06,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 13:33:06,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 13:33:06,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:33:06,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:06,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-09-25 13:33:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 13:33:06,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:06,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:06,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:06,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:06,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:06,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:06,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:33:06,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:06,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:06,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:06,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:06,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:06,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:06,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:33:06,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:06,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:33:06,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:06,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:06,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:06,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:06,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:33:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:06,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:06,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:06,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:06,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:06,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:33:06,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:06,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:06,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:06,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:06,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:33:06,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:33:06,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848780565] [2020-09-25 13:33:06,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:06,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:06,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309909341] [2020-09-25 13:33:06,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:06,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:06,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:06,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:06,669 INFO L87 Difference]: Start difference. First operand 1736 states and 2215 transitions. Second operand 5 states. [2020-09-25 13:33:09,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:09,058 INFO L93 Difference]: Finished difference Result 4789 states and 6352 transitions. [2020-09-25 13:33:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:09,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 13:33:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:09,078 INFO L225 Difference]: With dead ends: 4789 [2020-09-25 13:33:09,079 INFO L226 Difference]: Without dead ends: 3075 [2020-09-25 13:33:09,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 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 13:33:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2020-09-25 13:33:09,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 2960. [2020-09-25 13:33:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2960 states. [2020-09-25 13:33:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 3825 transitions. [2020-09-25 13:33:09,204 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 3825 transitions. Word has length 161 [2020-09-25 13:33:09,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:09,205 INFO L479 AbstractCegarLoop]: Abstraction has 2960 states and 3825 transitions. [2020-09-25 13:33:09,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:09,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 3825 transitions. [2020-09-25 13:33:09,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 13:33:09,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:09,218 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:09,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:09,218 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:09,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash -850064427, now seen corresponding path program 1 times [2020-09-25 13:33:09,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:09,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385679055] [2020-09-25 13:33:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:09,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:09,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:09,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:10,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:10,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:11,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:11,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:14,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 13:33:14,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:33:14,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:33:14,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:14,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:14,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 13:33:14,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 13:33:14,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:14,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:14,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:14,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:14,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:14,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:14,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:14,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:14,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:14,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:14,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:14,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:14,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:14,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:14,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:33:14,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:14,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:33:14,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:14,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:14,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:14,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:14,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:33:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:14,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:14,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:33:14,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:14,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:33:14,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:14,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:14,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:33:14,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 13:33:14,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385679055] [2020-09-25 13:33:14,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:14,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:14,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425053223] [2020-09-25 13:33:14,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:14,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:14,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:14,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:14,501 INFO L87 Difference]: Start difference. First operand 2960 states and 3825 transitions. Second operand 5 states. [2020-09-25 13:33:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:16,875 INFO L93 Difference]: Finished difference Result 7502 states and 9871 transitions. [2020-09-25 13:33:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:16,876 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-25 13:33:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:16,904 INFO L225 Difference]: With dead ends: 7502 [2020-09-25 13:33:16,904 INFO L226 Difference]: Without dead ends: 4564 [2020-09-25 13:33:16,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 13:33:16,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2020-09-25 13:33:17,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 3916. [2020-09-25 13:33:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3916 states. [2020-09-25 13:33:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3916 states to 3916 states and 5011 transitions. [2020-09-25 13:33:17,085 INFO L78 Accepts]: Start accepts. Automaton has 3916 states and 5011 transitions. Word has length 177 [2020-09-25 13:33:17,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:17,085 INFO L479 AbstractCegarLoop]: Abstraction has 3916 states and 5011 transitions. [2020-09-25 13:33:17,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:17,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3916 states and 5011 transitions. [2020-09-25 13:33:17,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 13:33:17,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:17,106 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:17,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:33:17,106 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:17,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:17,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1005138040, now seen corresponding path program 1 times [2020-09-25 13:33:17,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:17,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517002670] [2020-09-25 13:33:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:17,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:22,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:22,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 13:33:22,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:22,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:33:22,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:22,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:22,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:22,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 13:33:22,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 13:33:22,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:22,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:22,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:22,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:22,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:22,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:22,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:33:22,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:22,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:22,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:22,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:22,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:22,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:22,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:22,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:33:22,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:22,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:33:22,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:22,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:22,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:22,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:22,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:22,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:22,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:33:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:22,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:22,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:22,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:22,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:22,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:33:22,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:22,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:22,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:22,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:22,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:22,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 13:33:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:22,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:22,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:22,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:33:22,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:22,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:33:22,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:22,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:22,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:22,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:22,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:33:22,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 56 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 13:33:22,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517002670] [2020-09-25 13:33:22,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:22,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:33:22,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021401724] [2020-09-25 13:33:22,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:33:22,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:22,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:33:22,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:22,461 INFO L87 Difference]: Start difference. First operand 3916 states and 5011 transitions. Second operand 6 states.