/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=0.8 --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/Problem11_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:57:37,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:37,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:37,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:37,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:37,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:37,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:37,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:37,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:37,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:37,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:37,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:37,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:37,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:37,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:37,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:37,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:37,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:37,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:37,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:37,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:37,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:37,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:37,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:37,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:37,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:37,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:37,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:37,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:37,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:37,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:37,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:37,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:37,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:37,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:37,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:37,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:37,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:37,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:37,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:37,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:37,365 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 07:57:37,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:37,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:37,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:37,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:37,418 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:37,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:37,419 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:37,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:37,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:37,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:37,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:37,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:37,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:37,421 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:37,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:37,422 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:37,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:37,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:37,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:37,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:37,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:37,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:37,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:37,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:37,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:37,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:37,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:37,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:37,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:37,425 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:57:37,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:37,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:37,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:37,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:37,930 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:37,931 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 07:57:38,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82bc69fc0/6aa1aa996fe943f3ba085cddc50388a6/FLAGb266acd66 [2020-09-25 07:57:38,685 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:57:38,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 07:57:38,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82bc69fc0/6aa1aa996fe943f3ba085cddc50388a6/FLAGb266acd66 [2020-09-25 07:57:38,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/82bc69fc0/6aa1aa996fe943f3ba085cddc50388a6 [2020-09-25 07:57:38,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:57:38,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:57:38,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:38,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:57:38,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:57:38,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:38" (1/1) ... [2020-09-25 07:57:38,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb58955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:38, skipping insertion in model container [2020-09-25 07:57:38,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:38" (1/1) ... [2020-09-25 07:57:38,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:57:38,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:57:39,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:39,768 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:57:39,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:39,998 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:57:39,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:39 WrapperNode [2020-09-25 07:57:40,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:40,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:57:40,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:57:40,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:57:40,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:39" (1/1) ... [2020-09-25 07:57:40,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:39" (1/1) ... [2020-09-25 07:57:40,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:39" (1/1) ... [2020-09-25 07:57:40,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:39" (1/1) ... [2020-09-25 07:57:40,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:39" (1/1) ... [2020-09-25 07:57:40,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:39" (1/1) ... [2020-09-25 07:57:40,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:39" (1/1) ... [2020-09-25 07:57:40,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:57:40,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:57:40,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:57:40,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:57:40,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:39" (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 07:57:40,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:57:40,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:57:40,249 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:57:40,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:57:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:57:40,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:57:40,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:57:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:57:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:57:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:57:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:57:42,753 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:57:42,753 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:57:42,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:42 BoogieIcfgContainer [2020-09-25 07:57:42,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:57:42,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:57:42,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:57:42,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:57:42,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:57:38" (1/3) ... [2020-09-25 07:57:42,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef418ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:42, skipping insertion in model container [2020-09-25 07:57:42,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:39" (2/3) ... [2020-09-25 07:57:42,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef418ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:42, skipping insertion in model container [2020-09-25 07:57:42,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:42" (3/3) ... [2020-09-25 07:57:42,776 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label18.c [2020-09-25 07:57:42,789 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:57:42,802 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:57:42,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:57:42,867 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:57:42,867 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:57:42,867 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:57:42,867 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:57:42,867 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:57:42,868 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:57:42,868 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:57:42,868 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:57:42,905 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 07:57:42,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 07:57:42,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:42,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:42,918 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:42,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:42,926 INFO L82 PathProgramCache]: Analyzing trace with hash -123889732, now seen corresponding path program 1 times [2020-09-25 07:57:42,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:42,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281387881] [2020-09-25 07:57:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:43,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:43,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:43,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:44,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:44,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 07:57:44,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:57:44,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1281 [2020-09-25 07:57:44,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:44,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:57:44,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 07:57:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:57:44,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:44,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:44,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:44,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:57:44,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:44,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:57:44,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:44,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:57:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:44,686 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 07:57:44,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281387881] [2020-09-25 07:57:44,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:44,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:57:44,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334540977] [2020-09-25 07:57:44,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:57:44,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:44,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:57:44,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:57:44,728 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 07:57:48,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:48,654 INFO L93 Difference]: Finished difference Result 1921 states and 2518 transitions. [2020-09-25 07:57:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:57:48,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 07:57:48,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:48,689 INFO L225 Difference]: With dead ends: 1921 [2020-09-25 07:57:48,690 INFO L226 Difference]: Without dead ends: 1036 [2020-09-25 07:57:48,702 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 07:57:48,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-09-25 07:57:48,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 978. [2020-09-25 07:57:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-09-25 07:57:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1165 transitions. [2020-09-25 07:57:48,836 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1165 transitions. Word has length 55 [2020-09-25 07:57:48,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:48,838 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1165 transitions. [2020-09-25 07:57:48,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:57:48,839 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1165 transitions. [2020-09-25 07:57:48,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 07:57:48,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:48,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:48,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:48,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:48,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:48,858 INFO L82 PathProgramCache]: Analyzing trace with hash 497365935, now seen corresponding path program 1 times [2020-09-25 07:57:48,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:48,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390909550] [2020-09-25 07:57:48,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:48,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:53,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:53,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 07:57:53,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:53,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:57:53,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:53,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:53,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:53,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 07:57:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 07:57:53,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:54,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:54,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:54,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:57:54,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:54,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:57:54,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:54,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:57:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:57:54,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 07:57:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:54,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:54,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 07:57:54,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:54,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 07:57:54,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:54,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:54,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:54,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:54,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:57:54,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:57:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:54,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390909550] [2020-09-25 07:57:54,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:54,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:57:54,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094425078] [2020-09-25 07:57:54,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:54,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:54,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:54,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:54,513 INFO L87 Difference]: Start difference. First operand 978 states and 1165 transitions. Second operand 8 states. [2020-09-25 07:58:00,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:00,150 INFO L93 Difference]: Finished difference Result 3098 states and 3878 transitions. [2020-09-25 07:58:00,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:58:00,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-09-25 07:58:00,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:00,165 INFO L225 Difference]: With dead ends: 3098 [2020-09-25 07:58:00,165 INFO L226 Difference]: Without dead ends: 2137 [2020-09-25 07:58:00,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:58:00,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2020-09-25 07:58:00,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 1779. [2020-09-25 07:58:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2020-09-25 07:58:00,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2253 transitions. [2020-09-25 07:58:00,249 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2253 transitions. Word has length 137 [2020-09-25 07:58:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:00,252 INFO L479 AbstractCegarLoop]: Abstraction has 1779 states and 2253 transitions. [2020-09-25 07:58:00,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:58:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2253 transitions. [2020-09-25 07:58:00,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 07:58:00,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:00,263 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:00,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:58:00,263 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:00,264 INFO L82 PathProgramCache]: Analyzing trace with hash 466587141, now seen corresponding path program 1 times [2020-09-25 07:58:00,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:00,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488823359] [2020-09-25 07:58:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:00,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:00,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:00,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:00,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:02,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:05,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 07:58:05,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:58:05,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 07:58:05,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:05,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:58:05,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:58:05,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 07:58:05,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:05,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:05,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:58:05,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:58:05,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:05,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:58:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:58:05,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:05,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 07:58:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:05,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:05,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 07:58:05,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-25 07:58:05,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:05,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 07:58:05,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:58:06,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488823359] [2020-09-25 07:58:06,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:06,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 07:58:06,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997411652] [2020-09-25 07:58:06,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:58:06,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:06,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:58:06,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:58:06,124 INFO L87 Difference]: Start difference. First operand 1779 states and 2253 transitions. Second operand 9 states. [2020-09-25 07:58:13,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:13,726 INFO L93 Difference]: Finished difference Result 3670 states and 4850 transitions. [2020-09-25 07:58:13,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 07:58:13,727 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-09-25 07:58:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:13,742 INFO L225 Difference]: With dead ends: 3670 [2020-09-25 07:58:13,742 INFO L226 Difference]: Without dead ends: 2531 [2020-09-25 07:58:13,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-09-25 07:58:13,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2020-09-25 07:58:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 1808. [2020-09-25 07:58:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1808 states. [2020-09-25 07:58:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2279 transitions. [2020-09-25 07:58:13,809 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2279 transitions. Word has length 163 [2020-09-25 07:58:13,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:13,810 INFO L479 AbstractCegarLoop]: Abstraction has 1808 states and 2279 transitions. [2020-09-25 07:58:13,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:58:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2279 transitions. [2020-09-25 07:58:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 07:58:13,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:13,814 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:13,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:58:13,814 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:13,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:13,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1755075921, now seen corresponding path program 1 times [2020-09-25 07:58:13,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:13,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732268561] [2020-09-25 07:58:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:13,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:14,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:14,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:15,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:17,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:17,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:18,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:18,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:18,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 07:58:18,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:58:18,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:58:18,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:18,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:18,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:58:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:58:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 07:58:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:18,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:19,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:19,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:58:19,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:58:19,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:19,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:19,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:58:19,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:19,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:58:19,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:19,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 07:58:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:19,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:19,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 07:58:19,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:19,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 07:58:19,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:19,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:19,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 07:58:19,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:58:19,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732268561] [2020-09-25 07:58:19,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:58:19,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:58:19,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256686402] [2020-09-25 07:58:19,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:58:19,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:19,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:58:19,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:58:19,688 INFO L87 Difference]: Start difference. First operand 1808 states and 2279 transitions. Second operand 8 states. [2020-09-25 07:58:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:24,610 INFO L93 Difference]: Finished difference Result 3382 states and 4301 transitions. [2020-09-25 07:58:24,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:58:24,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 176 [2020-09-25 07:58:24,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:24,621 INFO L225 Difference]: With dead ends: 3382 [2020-09-25 07:58:24,622 INFO L226 Difference]: Without dead ends: 1591 [2020-09-25 07:58:24,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:58:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2020-09-25 07:58:24,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1560. [2020-09-25 07:58:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2020-09-25 07:58:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 1918 transitions. [2020-09-25 07:58:24,668 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 1918 transitions. Word has length 176 [2020-09-25 07:58:24,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:24,669 INFO L479 AbstractCegarLoop]: Abstraction has 1560 states and 1918 transitions. [2020-09-25 07:58:24,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:58:24,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 1918 transitions. [2020-09-25 07:58:24,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 07:58:24,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:24,674 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:58:24,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:58:24,675 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:24,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:24,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1015128611, now seen corresponding path program 1 times [2020-09-25 07:58:24,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:24,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686462508] [2020-09-25 07:58:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:24,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:24,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:25,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:27,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:27,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking...