/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:44:50,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:44:50,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:44:50,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:44:50,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:44:50,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:44:50,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:44:50,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:44:50,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:44:50,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:44:50,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:44:50,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:44:50,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:44:50,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:44:50,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:44:50,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:44:50,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:44:50,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:44:50,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:44:50,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:44:50,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:44:50,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:44:50,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:44:50,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:44:50,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:44:50,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:44:50,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:44:50,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:44:50,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:44:50,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:44:50,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:44:50,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:44:50,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:44:50,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:44:50,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:44:50,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:44:50,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:44:50,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:44:50,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:44:50,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:44:50,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:44:50,372 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 05:44:50,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:44:50,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:44:50,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:44:50,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:44:50,401 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:44:50,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:44:50,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:44:50,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:44:50,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:44:50,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:44:50,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:44:50,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:44:50,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:44:50,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:44:50,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:44:50,404 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:44:50,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:44:50,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:44:50,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:44:50,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:44:50,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:44:50,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:44:50,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:44:50,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:44:50,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:44:50,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:44:50,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:44:50,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:44:50,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:44:50,407 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=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:44:50,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:44:50,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:44:50,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:44:50,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:44:50,911 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:44:50,913 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2020-09-25 05:44:50,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0c67935d/1ad8357e2dc244e59e0c7426e89f7468/FLAG6ef23835b [2020-09-25 05:44:51,515 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:44:51,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2020-09-25 05:44:51,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0c67935d/1ad8357e2dc244e59e0c7426e89f7468/FLAG6ef23835b [2020-09-25 05:44:51,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0c67935d/1ad8357e2dc244e59e0c7426e89f7468 [2020-09-25 05:44:51,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:44:51,876 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:44:51,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:44:51,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:44:51,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:44:51,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:44:51" (1/1) ... [2020-09-25 05:44:51,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cab5458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:51, skipping insertion in model container [2020-09-25 05:44:51,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:44:51" (1/1) ... [2020-09-25 05:44:51,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:44:51,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:44:52,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:44:52,145 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:44:52,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:44:52,186 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:44:52,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:52 WrapperNode [2020-09-25 05:44:52,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:44:52,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:44:52,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:44:52,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:44:52,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:52" (1/1) ... [2020-09-25 05:44:52,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:52" (1/1) ... [2020-09-25 05:44:52,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:52" (1/1) ... [2020-09-25 05:44:52,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:52" (1/1) ... [2020-09-25 05:44:52,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:52" (1/1) ... [2020-09-25 05:44:52,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:52" (1/1) ... [2020-09-25 05:44:52,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:52" (1/1) ... [2020-09-25 05:44:52,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:44:52,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:44:52,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:44:52,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:44:52,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:52" (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 05:44:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:44:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:44:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 05:44:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 05:44:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:44:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:44:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:44:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 05:44:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 05:44:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:44:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:44:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:44:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:44:52,600 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:44:52,600 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 05:44:52,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:44:52 BoogieIcfgContainer [2020-09-25 05:44:52,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:44:52,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:44:52,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:44:52,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:44:52,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:44:51" (1/3) ... [2020-09-25 05:44:52,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a9cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:44:52, skipping insertion in model container [2020-09-25 05:44:52,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:44:52" (2/3) ... [2020-09-25 05:44:52,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a9cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:44:52, skipping insertion in model container [2020-09-25 05:44:52,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:44:52" (3/3) ... [2020-09-25 05:44:52,615 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2020-09-25 05:44:52,629 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:44:52,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:44:52,665 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:44:52,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:44:52,707 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:44:52,707 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:44:52,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:44:52,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:44:52,708 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:44:52,708 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:44:52,708 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:44:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-25 05:44:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 05:44:52,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:52,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:44:52,747 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:52,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:52,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1930258608, now seen corresponding path program 1 times [2020-09-25 05:44:52,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:52,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137642957] [2020-09-25 05:44:52,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:52,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:52,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:52,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:44:52,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:52,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 05:44:52,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:52,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:52,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:52,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:44:52,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:52,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:44:52,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:52,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:52,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:52,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:44:52,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:52,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:44:52,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:52,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:52,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:52,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:52,988 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 05:44:52,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137642957] [2020-09-25 05:44:52,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:52,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 05:44:52,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427053319] [2020-09-25 05:44:52,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 05:44:53,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:53,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 05:44:53,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 05:44:53,021 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-09-25 05:44:53,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:53,048 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-09-25 05:44:53,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 05:44:53,050 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-09-25 05:44:53,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:53,059 INFO L225 Difference]: With dead ends: 48 [2020-09-25 05:44:53,059 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 05:44:53,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 05:44:53,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 05:44:53,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-25 05:44:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 05:44:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-09-25 05:44:53,108 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2020-09-25 05:44:53,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:53,109 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-09-25 05:44:53,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 05:44:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-09-25 05:44:53,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 05:44:53,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:53,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:44:53,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:44:53,111 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:53,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1900705936, now seen corresponding path program 1 times [2020-09-25 05:44:53,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:53,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83121896] [2020-09-25 05:44:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:53,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:53,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:53,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:44:53,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:53,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 05:44:53,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:53,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:44:53,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:44:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:44:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:53,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:53,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:53,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:53,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:44:53,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:44:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:53,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:53,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:53,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:53,222 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 05:44:53,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83121896] [2020-09-25 05:44:53,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:53,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:44:53,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447267649] [2020-09-25 05:44:53,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:44:53,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:53,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:44:53,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:44:53,227 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 3 states. [2020-09-25 05:44:53,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:53,253 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-09-25 05:44:53,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:44:53,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-25 05:44:53,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:53,255 INFO L225 Difference]: With dead ends: 29 [2020-09-25 05:44:53,256 INFO L226 Difference]: Without dead ends: 24 [2020-09-25 05:44:53,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:44:53,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-25 05:44:53,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-09-25 05:44:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 05:44:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-09-25 05:44:53,264 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-09-25 05:44:53,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:53,264 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-09-25 05:44:53,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:44:53,265 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-09-25 05:44:53,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 05:44:53,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:53,266 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] [2020-09-25 05:44:53,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:44:53,266 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:53,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:53,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1024587775, now seen corresponding path program 1 times [2020-09-25 05:44:53,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:53,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503688563] [2020-09-25 05:44:53,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:53,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:53,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:53,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:53,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 05:44:53,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:44:53,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-25 05:44:53,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:53,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:53,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:44:53,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 05:44:53,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:44:53,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:44:53,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:53,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:53,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:44:53,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:53,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:44:53,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:53,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:53,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:53,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:53,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:53,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:44:53,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503688563] [2020-09-25 05:44:53,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:44:53,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:44:53,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152445990] [2020-09-25 05:44:53,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:44:53,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:53,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:44:53,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:44:53,656 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2020-09-25 05:44:53,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:53,674 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-25 05:44:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:44:53,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-25 05:44:53,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:53,676 INFO L225 Difference]: With dead ends: 38 [2020-09-25 05:44:53,676 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 05:44:53,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:44:53,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 05:44:53,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-09-25 05:44:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 05:44:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-09-25 05:44:53,683 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2020-09-25 05:44:53,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:53,684 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-09-25 05:44:53,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:44:53,684 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-09-25 05:44:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 05:44:53,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:53,685 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] [2020-09-25 05:44:53,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:44:53,685 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:53,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2065885280, now seen corresponding path program 1 times [2020-09-25 05:44:53,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:53,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69572026] [2020-09-25 05:44:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:53,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:53,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:53,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:53,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:54,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:54,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 05:44:54,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:44:54,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-25 05:44:54,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:54,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:54,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:44:54,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:44:54,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:44:54,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:54,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:54,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:54,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:44:54,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:44:54,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:54,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:54,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:44:54,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69572026] [2020-09-25 05:44:54,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:44:54,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 05:44:54,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287207739] [2020-09-25 05:44:54,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:44:54,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:54,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:44:54,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:44:54,307 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 4 states. [2020-09-25 05:44:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:54,342 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-09-25 05:44:54,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 05:44:54,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-09-25 05:44:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:54,344 INFO L225 Difference]: With dead ends: 37 [2020-09-25 05:44:54,344 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 05:44:54,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:44:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 05:44:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-09-25 05:44:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 05:44:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 05:44:54,352 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-09-25 05:44:54,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:54,352 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 05:44:54,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:44:54,352 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 05:44:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 05:44:54,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:54,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:44:54,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:44:54,356 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:54,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1729554991, now seen corresponding path program 2 times [2020-09-25 05:44:54,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:54,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976388078] [2020-09-25 05:44:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:54,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:54,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:54,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:54,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:54,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:54,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:54,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:55,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:44:55,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:44:55,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 909 [2020-09-25 05:44:55,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:55,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:44:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:44:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:44:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:55,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:55,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:55,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:44:55,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:55,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:44:55,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:55,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:55,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:55,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:55,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:44:55,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976388078] [2020-09-25 05:44:55,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:44:55,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:44:55,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369049334] [2020-09-25 05:44:55,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:44:55,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:55,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:44:55,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:44:55,359 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-09-25 05:44:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:55,444 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 05:44:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:44:55,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 05:44:55,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:55,451 INFO L225 Difference]: With dead ends: 44 [2020-09-25 05:44:55,451 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 05:44:55,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:44:55,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 05:44:55,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-09-25 05:44:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 05:44:55,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 05:44:55,470 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 27 [2020-09-25 05:44:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:55,472 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 05:44:55,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:44:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 05:44:55,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 05:44:55,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:55,474 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:44:55,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:44:55,474 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:55,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:55,475 INFO L82 PathProgramCache]: Analyzing trace with hash -373902912, now seen corresponding path program 3 times [2020-09-25 05:44:55,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:55,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765063499] [2020-09-25 05:44:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:55,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:55,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:56,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:57,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:57,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 05:44:57,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 05:44:57,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2263 [2020-09-25 05:44:57,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:57,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:44:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:44:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:44:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:57,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:44:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:57,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:57,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:44:57,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:44:57,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:44:57,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:44:57,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:44:57,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:44:57,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:44:57,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:44:57,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:44:57,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:44:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:44:57,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765063499] [2020-09-25 05:44:57,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:44:57,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:44:57,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529603339] [2020-09-25 05:44:57,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:44:57,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:44:57,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:44:57,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:44:57,805 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 6 states. [2020-09-25 05:44:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:44:57,860 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-09-25 05:44:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:44:57,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-09-25 05:44:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:44:57,863 INFO L225 Difference]: With dead ends: 51 [2020-09-25 05:44:57,863 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 05:44:57,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:44:57,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 05:44:57,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-09-25 05:44:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 05:44:57,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-09-25 05:44:57,873 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 32 [2020-09-25 05:44:57,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:44:57,873 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-09-25 05:44:57,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:44:57,873 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-09-25 05:44:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 05:44:57,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:44:57,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:44:57,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:44:57,876 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:44:57,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:44:57,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1102447409, now seen corresponding path program 4 times [2020-09-25 05:44:57,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:44:57,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314149715] [2020-09-25 05:44:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:44:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:44:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:57,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:57,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:57,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:44:58,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:02,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:02,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 05:45:02,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-09-25 05:45:02,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4472 [2020-09-25 05:45:02,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:02,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:45:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:45:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:45:02,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:02,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:45:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:02,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:02,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:02,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:45:02,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:02,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:45:02,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:02,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:02,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:02,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:02,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 05:45:02,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314149715] [2020-09-25 05:45:02,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:45:02,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:45:02,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893246439] [2020-09-25 05:45:02,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:45:02,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:45:02,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:45:02,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:45:02,420 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 6 states. [2020-09-25 05:45:02,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:45:02,485 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2020-09-25 05:45:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:45:02,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-09-25 05:45:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:45:02,486 INFO L225 Difference]: With dead ends: 78 [2020-09-25 05:45:02,486 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 05:45:02,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:45:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 05:45:02,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-09-25 05:45:02,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 05:45:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-09-25 05:45:02,494 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 37 [2020-09-25 05:45:02,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:45:02,495 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-09-25 05:45:02,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:45:02,495 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-09-25 05:45:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 05:45:02,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:45:02,496 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:45:02,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:45:02,496 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:45:02,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:45:02,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1585595762, now seen corresponding path program 5 times [2020-09-25 05:45:02,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:45:02,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833531107] [2020-09-25 05:45:02,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:45:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:02,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:02,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:02,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:02,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:02,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:03,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:03,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 05:45:03,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:45:03,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-09-25 05:45:03,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:03,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:45:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:45:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:45:03,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:45:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:45:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:45:03,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:45:03,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:45:03,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:45:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:45:03,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:45:03,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:45:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:45:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:45:03,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:45:03,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:45:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-25 05:45:03,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833531107] [2020-09-25 05:45:03,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:45:03,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:45:03,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401379802] [2020-09-25 05:45:03,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:45:03,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:45:03,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:45:03,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:45:03,906 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 5 states. [2020-09-25 05:45:03,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:45:03,973 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2020-09-25 05:45:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:45:03,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-25 05:45:03,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:45:03,974 INFO L225 Difference]: With dead ends: 70 [2020-09-25 05:45:03,974 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:45:03,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:45:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:45:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:45:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:45:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:45:03,977 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2020-09-25 05:45:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:45:03,978 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:45:03,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:45:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:45:03,979 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:45:03,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:45:03,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:45:04,067 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 05:45:04,068 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:45:04,068 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:45:04,068 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 05:45:04,068 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 05:45:04,069 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:45:04,069 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 05:45:04,069 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 05:45:04,069 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 05:45:04,070 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 05:45:04,070 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 05:45:04,070 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 05:45:04,070 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 30) no Hoare annotation was computed. [2020-09-25 05:45:04,070 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 05:45:04,070 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 05:45:04,071 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 05:45:04,071 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 05:45:04,071 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 30) no Hoare annotation was computed. [2020-09-25 05:45:04,071 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 30) the Hoare annotation is: true [2020-09-25 05:45:04,072 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 05:45:04,072 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (= main_~k~0 4) [2020-09-25 05:45:04,072 INFO L264 CegarLoopResult]: At program point L24-3(lines 18 27) the Hoare annotation is: (or (= main_~k~0 4) (and (<= main_~i~0 0) (<= (+ main_~j~0 100) 0))) [2020-09-25 05:45:04,072 INFO L264 CegarLoopResult]: At program point L20-2(lines 20 22) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2020-09-25 05:45:04,073 INFO L268 CegarLoopResult]: For program point L20-3(lines 20 22) no Hoare annotation was computed. [2020-09-25 05:45:04,073 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 05:45:04,073 INFO L264 CegarLoopResult]: At program point L18-2(lines 18 27) the Hoare annotation is: (= main_~k~0 4) [2020-09-25 05:45:04,073 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 05:45:04,073 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 05:45:04,074 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 05:45:04,074 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 05:45:04,074 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 05:45:04,074 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 05:45:04,074 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 05:45:04,075 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 05:45:04,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:45:04 BoogieIcfgContainer [2020-09-25 05:45:04,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:45:04,105 INFO L168 Benchmark]: Toolchain (without parser) took 12231.92 ms. Allocated memory was 135.3 MB in the beginning and 330.3 MB in the end (delta: 195.0 MB). Free memory was 98.3 MB in the beginning and 86.8 MB in the end (delta: 11.5 MB). Peak memory consumption was 206.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:04,106 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 135.3 MB. Free memory was 116.8 MB in the beginning and 116.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 05:45:04,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.26 ms. Allocated memory is still 135.3 MB. Free memory was 97.6 MB in the beginning and 88.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:04,108 INFO L168 Benchmark]: Boogie Preprocessor took 111.08 ms. Allocated memory was 135.3 MB in the beginning and 198.2 MB in the end (delta: 62.9 MB). Free memory was 88.2 MB in the beginning and 176.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:04,109 INFO L168 Benchmark]: RCFGBuilder took 306.45 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 163.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:04,110 INFO L168 Benchmark]: TraceAbstraction took 11494.18 ms. Allocated memory was 198.2 MB in the beginning and 330.3 MB in the end (delta: 132.1 MB). Free memory was 162.9 MB in the beginning and 86.8 MB in the end (delta: 76.1 MB). Peak memory consumption was 208.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:45:04,113 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 135.3 MB. Free memory was 116.8 MB in the beginning and 116.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.26 ms. Allocated memory is still 135.3 MB. Free memory was 97.6 MB in the beginning and 88.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.08 ms. Allocated memory was 135.3 MB in the beginning and 198.2 MB in the end (delta: 62.9 MB). Free memory was 88.2 MB in the beginning and 176.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 306.45 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 163.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11494.18 ms. Allocated memory was 198.2 MB in the beginning and 330.3 MB in the end (delta: 132.1 MB). Free memory was 162.9 MB in the beginning and 86.8 MB in the end (delta: 76.1 MB). Peak memory consumption was 208.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: k == 4 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: k == 4 || i <= 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: k == 4 || (i <= 0 && j + 100 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.2s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 50 SDslu, 302 SDs, 0 SdLazy, 106 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 33 NumberOfFragments, 31 HoareAnnotationTreeSize, 17 FomulaSimplifications, 86 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 11871 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 76/115 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...