/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:44:12,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:44:12,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:44:12,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:44:12,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:44:12,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:44:12,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:44:12,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:44:12,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:44:12,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:44:12,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:44:12,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:44:12,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:44:12,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:44:12,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:44:12,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:44:12,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:44:12,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:44:12,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:44:12,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:44:12,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:44:12,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:44:12,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:44:12,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:44:12,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:44:12,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:44:12,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:44:12,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:44:12,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:44:12,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:44:12,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:44:12,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:44:12,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:44:12,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:44:12,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:44:12,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:44:12,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:44:12,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:44:12,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:44:12,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:44:12,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:44:12,246 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 06:44:12,297 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:44:12,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:44:12,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:44:12,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:44:12,299 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:44:12,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:44:12,300 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:44:12,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:44:12,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:44:12,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:44:12,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:44:12,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:44:12,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:44:12,303 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:44:12,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:44:12,303 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:44:12,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:44:12,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:44:12,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:44:12,304 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:44:12,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:44:12,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:44:12,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:44:12,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:44:12,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:44:12,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:44:12,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:44:12,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:44:12,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:44:12,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:44:12,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:44:12,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:44:12,799 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:44:12,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:44:12,804 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:44:12,805 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label12.c [2020-09-25 06:44:12,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17c476ace/ac06478f3e36454ea27cdc87b81e612a/FLAG8470ee8fc [2020-09-25 06:44:13,533 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:44:13,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label12.c [2020-09-25 06:44:13,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17c476ace/ac06478f3e36454ea27cdc87b81e612a/FLAG8470ee8fc [2020-09-25 06:44:13,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17c476ace/ac06478f3e36454ea27cdc87b81e612a [2020-09-25 06:44:13,789 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:44:13,795 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:44:13,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:13,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:44:13,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:44:13,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:13" (1/1) ... [2020-09-25 06:44:13,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:13, skipping insertion in model container [2020-09-25 06:44:13,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:13" (1/1) ... [2020-09-25 06:44:13,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:44:13,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:44:14,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:14,356 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:44:14,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:14,555 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:44:14,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:14 WrapperNode [2020-09-25 06:44:14,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:14,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:44:14,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:44:14,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:44:14,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:14" (1/1) ... [2020-09-25 06:44:14,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:14" (1/1) ... [2020-09-25 06:44:14,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:14" (1/1) ... [2020-09-25 06:44:14,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:14" (1/1) ... [2020-09-25 06:44:14,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:14" (1/1) ... [2020-09-25 06:44:14,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:14" (1/1) ... [2020-09-25 06:44:14,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:14" (1/1) ... [2020-09-25 06:44:14,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:44:14,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:44:14,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:44:14,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:44:14,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:44:14,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:44:14,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:44:14,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:44:14,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:44:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:44:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:44:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:44:14,762 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:44:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:44:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:44:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:44:16,100 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:44:16,101 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:44:16,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:16 BoogieIcfgContainer [2020-09-25 06:44:16,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:44:16,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:44:16,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:44:16,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:44:16,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:44:13" (1/3) ... [2020-09-25 06:44:16,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:16, skipping insertion in model container [2020-09-25 06:44:16,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:14" (2/3) ... [2020-09-25 06:44:16,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:16, skipping insertion in model container [2020-09-25 06:44:16,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:16" (3/3) ... [2020-09-25 06:44:16,121 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label12.c [2020-09-25 06:44:16,133 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:44:16,146 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:44:16,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:44:16,209 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:44:16,210 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:44:16,210 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:44:16,210 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:44:16,211 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:44:16,211 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:44:16,211 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:44:16,211 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:44:16,248 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:44:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 06:44:16,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:16,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:16,272 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:16,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:16,281 INFO L82 PathProgramCache]: Analyzing trace with hash 463353353, now seen corresponding path program 1 times [2020-09-25 06:44:16,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:16,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-25 06:44:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:16,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:17,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:19,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:19,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:21,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 06:44:21,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:44:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 06:44:21,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:21,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:21,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:44:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 06:44:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:44:21,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:21,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:21,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:21,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:21,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 06:44:21,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:21,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:21,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:21,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:21,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:44:21,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:21,963 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 06:44:21,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-25 06:44:21,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:44:21,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:44:21,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223767159] [2020-09-25 06:44:21,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:44:21,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:21,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:44:21,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:44:21,997 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:44:24,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:24,145 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 06:44:24,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:44:24,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 06:44:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:24,176 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 06:44:24,176 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 06:44:24,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:24,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 06:44:24,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 06:44:24,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 06:44:24,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 06:44:24,322 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 144 [2020-09-25 06:44:24,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:24,323 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 06:44:24,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:44:24,323 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 06:44:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 06:44:24,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:24,341 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:24,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:44:24,342 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:24,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:24,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1747040163, now seen corresponding path program 1 times [2020-09-25 06:44:24,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:24,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260951798] [2020-09-25 06:44:24,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:24,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:27,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:28,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:29,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:29,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:29,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:29,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 06:44:29,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:44:29,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 06:44:29,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:29,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:29,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:29,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:44:29,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 06:44:29,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:29,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:29,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:29,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:29,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:29,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:29,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:29,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:29,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:29,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:29,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:29,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:29,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:29,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:44:29,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:44:29,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:29,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:44:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:29,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260951798] [2020-09-25 06:44:29,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:29,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:29,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121024438] [2020-09-25 06:44:29,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:29,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:29,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:29,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:29,633 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 06:44:31,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:31,608 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 06:44:31,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:31,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-25 06:44:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:31,619 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 06:44:31,620 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 06:44:31,623 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 06:44:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 06:44:31,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 06:44:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 06:44:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 06:44:31,680 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 162 [2020-09-25 06:44:31,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:31,681 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 06:44:31,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:31,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 06:44:31,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 06:44:31,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:31,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:31,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:44:31,688 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:31,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1919685948, now seen corresponding path program 1 times [2020-09-25 06:44:31,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:31,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79691194] [2020-09-25 06:44:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:31,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:32,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:32,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:34,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:36,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:36,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 06:44:36,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:44:36,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:44:36,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:36,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 06:44:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 06:44:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:36,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:36,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:36,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:36,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:36,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:36,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:44:36,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:36,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:36,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:36,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:36,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:36,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:36,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:36,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:44:36,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:36,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 06:44:36,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:36,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:44:36,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:37,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79691194] [2020-09-25 06:44:37,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:37,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:37,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323301059] [2020-09-25 06:44:37,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:37,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:37,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:37,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:37,014 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 5 states. [2020-09-25 06:44:39,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:39,183 INFO L93 Difference]: Finished difference Result 2678 states and 3478 transitions. [2020-09-25 06:44:39,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:39,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 06:44:39,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:39,202 INFO L225 Difference]: With dead ends: 2678 [2020-09-25 06:44:39,203 INFO L226 Difference]: Without dead ends: 1664 [2020-09-25 06:44:39,207 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 06:44:39,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2020-09-25 06:44:39,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1644. [2020-09-25 06:44:39,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2020-09-25 06:44:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2012 transitions. [2020-09-25 06:44:39,286 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2012 transitions. Word has length 178 [2020-09-25 06:44:39,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:39,288 INFO L479 AbstractCegarLoop]: Abstraction has 1644 states and 2012 transitions. [2020-09-25 06:44:39,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:39,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2012 transitions. [2020-09-25 06:44:39,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 06:44:39,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:39,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:39,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:44:39,305 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:39,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:39,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1258115336, now seen corresponding path program 1 times [2020-09-25 06:44:39,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:39,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433527665] [2020-09-25 06:44:39,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:39,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:39,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:40,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:40,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:41,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:41,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:44,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 06:44:44,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:44:44,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-09-25 06:44:44,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:44,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 06:44:44,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 06:44:44,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:44,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:44,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:44,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:44,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:44,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:44:44,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:44,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:44,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:44,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:44,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:44,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:44,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:44,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:44,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:44,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:44,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 06:44:44,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:44,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:44,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:44:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:44,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433527665] [2020-09-25 06:44:44,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:44,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:44,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766342] [2020-09-25 06:44:44,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:44,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:44,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:44,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:44,697 INFO L87 Difference]: Start difference. First operand 1644 states and 2012 transitions. Second operand 5 states. [2020-09-25 06:44:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:46,444 INFO L93 Difference]: Finished difference Result 4344 states and 5482 transitions. [2020-09-25 06:44:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:46,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 06:44:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:46,461 INFO L225 Difference]: With dead ends: 4344 [2020-09-25 06:44:46,461 INFO L226 Difference]: Without dead ends: 2722 [2020-09-25 06:44:46,468 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 06:44:46,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2020-09-25 06:44:46,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2549. [2020-09-25 06:44:46,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2549 states. [2020-09-25 06:44:46,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3209 transitions. [2020-09-25 06:44:46,578 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3209 transitions. Word has length 182 [2020-09-25 06:44:46,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:46,579 INFO L479 AbstractCegarLoop]: Abstraction has 2549 states and 3209 transitions. [2020-09-25 06:44:46,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:46,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3209 transitions. [2020-09-25 06:44:46,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 06:44:46,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:46,591 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:46,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:44:46,591 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:46,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:46,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1374839553, now seen corresponding path program 1 times [2020-09-25 06:44:46,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:46,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901986489] [2020-09-25 06:44:46,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:46,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:46,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:46,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:51,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:51,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 06:44:51,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:44:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 06:44:51,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:51,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 06:44:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:44:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:51,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:51,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:51,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:51,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:51,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:44:51,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:51,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:51,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:51,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:51,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:51,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:51,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:51,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 06:44:51,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:51,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:51,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:51,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:51,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:44:51,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:51,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:44:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:51,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:51,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:51,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:44:51,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 06:44:51,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:51,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:44:51,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:44:52,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901986489] [2020-09-25 06:44:52,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:52,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:44:52,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756673005] [2020-09-25 06:44:52,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:44:52,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:52,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:44:52,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:44:52,003 INFO L87 Difference]: Start difference. First operand 2549 states and 3209 transitions. Second operand 7 states. [2020-09-25 06:44:54,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:54,354 INFO L93 Difference]: Finished difference Result 5923 states and 7697 transitions. [2020-09-25 06:44:54,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:44:54,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 06:44:54,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:54,372 INFO L225 Difference]: With dead ends: 5923 [2020-09-25 06:44:54,373 INFO L226 Difference]: Without dead ends: 3396 [2020-09-25 06:44:54,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:44:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2020-09-25 06:44:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 3185. [2020-09-25 06:44:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3185 states. [2020-09-25 06:44:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 3960 transitions. [2020-09-25 06:44:54,478 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 3960 transitions. Word has length 222 [2020-09-25 06:44:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:54,478 INFO L479 AbstractCegarLoop]: Abstraction has 3185 states and 3960 transitions. [2020-09-25 06:44:54,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:44:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 3960 transitions. [2020-09-25 06:44:54,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 06:44:54,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:54,493 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:54,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:44:54,493 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:54,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:54,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1614351751, now seen corresponding path program 1 times [2020-09-25 06:44:54,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:54,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49624372] [2020-09-25 06:44:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:54,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:54,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:55,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:59,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:59,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-09-25 06:44:59,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:44:59,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 06:44:59,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:59,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 06:44:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 06:44:59,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:59,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:59,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:59,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:59,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:59,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:59,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:44:59,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:59,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:59,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:59,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:59,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:59,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:59,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:59,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:59,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:44:59,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:44:59,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:59,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:59,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:59,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:44:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:59,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:59,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:59,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:44:59,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 06:44:59,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:59,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:44:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 06:44:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:59,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:59,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:59,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:59,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:44:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 06:44:59,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:59,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:59,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:59,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:44:59,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:44:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 06:44:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:59,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:59,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:59,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:44:59,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:59,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 06:44:59,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:59,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:44:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:44:59,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 176 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 06:45:00,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49624372] [2020-09-25 06:45:00,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:00,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:45:00,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867128250] [2020-09-25 06:45:00,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:45:00,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:00,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:45:00,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:45:00,081 INFO L87 Difference]: Start difference. First operand 3185 states and 3960 transitions. Second operand 8 states.