/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=SHALLOWEST --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/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:05:49,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:05:49,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:05:49,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:05:49,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:05:49,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:05:49,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:05:49,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:05:49,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:05:50,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:05:50,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:05:50,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:05:50,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:05:50,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:05:50,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:05:50,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:05:50,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:05:50,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:05:50,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:05:50,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:05:50,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:05:50,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:05:50,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:05:50,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:05:50,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:05:50,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:05:50,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:05:50,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:05:50,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:05:50,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:05:50,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:05:50,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:05:50,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:05:50,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:05:50,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:05:50,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:05:50,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:05:50,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:05:50,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:05:50,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:05:50,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:05:50,068 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 00:05:50,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:05:50,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:05:50,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:05:50,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:05:50,121 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:05:50,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:05:50,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:05:50,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:05:50,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:05:50,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:05:50,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:05:50,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:05:50,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:05:50,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:05:50,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:05:50,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:05:50,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:05:50,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:05:50,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:05:50,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:05:50,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:05:50,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:05:50,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:05:50,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:05:50,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:05:50,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:05:50,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:05:50,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:05:50,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:05:50,128 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:05:50,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:05:50,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:05:50,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:05:50,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:05:50,629 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:05:50,630 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2020-09-25 00:05:50,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c10bcdad5/b2ba9dc5f51241709ee06de105e70678/FLAG5c7997a0d [2020-09-25 00:05:51,291 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:05:51,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gj2007b.i [2020-09-25 00:05:51,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c10bcdad5/b2ba9dc5f51241709ee06de105e70678/FLAG5c7997a0d [2020-09-25 00:05:51,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c10bcdad5/b2ba9dc5f51241709ee06de105e70678 [2020-09-25 00:05:51,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:05:51,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:05:51,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:05:51,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:05:51,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:05:51,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:05:51" (1/1) ... [2020-09-25 00:05:51,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:51, skipping insertion in model container [2020-09-25 00:05:51,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:05:51" (1/1) ... [2020-09-25 00:05:51,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:05:51,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:05:51,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:05:51,904 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:05:51,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:05:51,945 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:05:51,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:51 WrapperNode [2020-09-25 00:05:51,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:05:51,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:05:51,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:05:51,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:05:51,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:51" (1/1) ... [2020-09-25 00:05:51,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:51" (1/1) ... [2020-09-25 00:05:51,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:51" (1/1) ... [2020-09-25 00:05:51,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:51" (1/1) ... [2020-09-25 00:05:51,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:51" (1/1) ... [2020-09-25 00:05:51,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:51" (1/1) ... [2020-09-25 00:05:51,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:51" (1/1) ... [2020-09-25 00:05:52,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:05:52,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:05:52,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:05:52,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:05:52,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:05:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:05:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:05:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:05:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:05:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:05:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:05:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:05:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:05:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:05:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:05:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:05:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:05:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:05:52,389 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:05:52,389 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 00:05:52,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:05:52 BoogieIcfgContainer [2020-09-25 00:05:52,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:05:52,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:05:52,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:05:52,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:05:52,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:05:51" (1/3) ... [2020-09-25 00:05:52,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9483cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:05:52, skipping insertion in model container [2020-09-25 00:05:52,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:05:51" (2/3) ... [2020-09-25 00:05:52,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9483cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:05:52, skipping insertion in model container [2020-09-25 00:05:52,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:05:52" (3/3) ... [2020-09-25 00:05:52,430 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2020-09-25 00:05:52,458 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:05:52,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:05:52,502 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:05:52,535 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:05:52,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:05:52,536 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:05:52,536 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:05:52,536 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:05:52,537 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:05:52,537 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:05:52,537 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:05:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-25 00:05:52,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-25 00:05:52,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:52,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:05:52,572 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:52,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:52,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1007675669, now seen corresponding path program 1 times [2020-09-25 00:05:52,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:52,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124960889] [2020-09-25 00:05:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:52,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:52,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:52,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:52,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:05:52,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:05:52,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 00:05:52,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:52,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:05:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:05:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 00:05:52,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:05:53,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:53,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:53,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:53,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:53,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:05:53,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:53,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:53,020 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 00:05:53,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124960889] [2020-09-25 00:05:53,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:53,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:05:53,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880388505] [2020-09-25 00:05:53,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:05:53,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:53,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:05:53,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:05:53,049 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-09-25 00:05:53,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:53,163 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2020-09-25 00:05:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:05:53,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-25 00:05:53,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:53,180 INFO L225 Difference]: With dead ends: 58 [2020-09-25 00:05:53,180 INFO L226 Difference]: Without dead ends: 37 [2020-09-25 00:05:53,185 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 00:05:53,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-25 00:05:53,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-09-25 00:05:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 00:05:53,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 00:05:53,235 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 14 [2020-09-25 00:05:53,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:53,236 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 00:05:53,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:05:53,236 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 00:05:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 00:05:53,237 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:53,238 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:05:53,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:05:53,238 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:53,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:53,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1988212296, now seen corresponding path program 1 times [2020-09-25 00:05:53,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:53,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454117462] [2020-09-25 00:05:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:53,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:53,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 00:05:53,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:05:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-25 00:05:53,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:05:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:05:53,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 00:05:53,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:53,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:53,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:53,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:53,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:53,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:05:53,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:53,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:53,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:53,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:53,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:05:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:53,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:53,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:53,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:53,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 00:05:53,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:53,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454117462] [2020-09-25 00:05:53,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:53,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 00:05:53,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636657517] [2020-09-25 00:05:53,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:05:53,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:53,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:05:53,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:05:53,623 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2020-09-25 00:05:53,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:53,715 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-09-25 00:05:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:05:53,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-25 00:05:53,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:53,719 INFO L225 Difference]: With dead ends: 54 [2020-09-25 00:05:53,720 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 00:05:53,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:05:53,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 00:05:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-09-25 00:05:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 00:05:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-09-25 00:05:53,730 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2020-09-25 00:05:53,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:53,731 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-09-25 00:05:53,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:05:53,731 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-09-25 00:05:53,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 00:05:53,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:53,733 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 00:05:53,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:05:53,733 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:53,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:53,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2096508511, now seen corresponding path program 1 times [2020-09-25 00:05:53,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:53,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998233432] [2020-09-25 00:05:53,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:53,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:53,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:53,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:53,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:05:53,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:05:53,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 00:05:53,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:05:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:05:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 00:05:53,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:53,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:53,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:53,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:53,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:53,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:53,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:05:53,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:53,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:53,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998233432] [2020-09-25 00:05:53,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:53,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 00:05:53,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132977897] [2020-09-25 00:05:53,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:05:53,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:53,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:05:54,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:05:54,009 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-09-25 00:05:54,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:54,085 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-09-25 00:05:54,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:05:54,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-25 00:05:54,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:54,087 INFO L225 Difference]: With dead ends: 57 [2020-09-25 00:05:54,088 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 00:05:54,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:05:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 00:05:54,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2020-09-25 00:05:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 00:05:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 00:05:54,096 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2020-09-25 00:05:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:54,096 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 00:05:54,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:05:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 00:05:54,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 00:05:54,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:54,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:05:54,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:05:54,099 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:54,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:54,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1151527866, now seen corresponding path program 1 times [2020-09-25 00:05:54,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:54,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359344452] [2020-09-25 00:05:54,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:54,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:54,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:54,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:54,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:05:54,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:05:54,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 00:05:54,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:54,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:05:54,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:05:54,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:05:54,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:54,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:54,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:54,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:54,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:54,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:54,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:05:54,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:54,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:54,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:54,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:05:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:54,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359344452] [2020-09-25 00:05:54,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:54,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:05:54,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957116722] [2020-09-25 00:05:54,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:05:54,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:54,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:05:54,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:05:54,442 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-09-25 00:05:54,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:54,550 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-09-25 00:05:54,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:05:54,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-09-25 00:05:54,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:54,554 INFO L225 Difference]: With dead ends: 44 [2020-09-25 00:05:54,554 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 00:05:54,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:05:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 00:05:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-09-25 00:05:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 00:05:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-09-25 00:05:54,568 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-09-25 00:05:54,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:54,569 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-09-25 00:05:54,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:05:54,569 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-09-25 00:05:54,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 00:05:54,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:54,572 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:05:54,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:05:54,573 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:54,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:54,574 INFO L82 PathProgramCache]: Analyzing trace with hash -2086501752, now seen corresponding path program 1 times [2020-09-25 00:05:54,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:54,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038625722] [2020-09-25 00:05:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:54,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:54,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:54,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:05:54,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:54,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 00:05:54,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:54,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:05:54,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 00:05:54,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 00:05:54,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:54,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:54,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:05:54,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:54,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:05:54,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:54,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:54,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:54,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:54,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:54,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 00:05:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:54,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:54,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:54,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:05:54,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:54,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 00:05:54,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:54,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:05:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:05:54,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:05:54,832 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 00:05:54,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038625722] [2020-09-25 00:05:54,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:05:54,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 00:05:54,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102954762] [2020-09-25 00:05:54,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:05:54,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:54,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:05:54,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:05:54,836 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 6 states. [2020-09-25 00:05:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:54,923 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-09-25 00:05:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 00:05:54,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-25 00:05:54,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:54,924 INFO L225 Difference]: With dead ends: 43 [2020-09-25 00:05:54,924 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:05:54,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:05:54,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:05:54,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:05:54,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:05:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:05:54,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-09-25 00:05:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:54,927 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:05:54,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:05:54,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:05:54,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:05:54,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:05:54,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:05:55,204 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 00:05:55,204 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:05:55,205 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:05:55,205 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:05:55,205 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:05:55,206 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:05:55,206 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 00:05:55,206 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 00:05:55,206 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 00:05:55,206 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 00:05:55,207 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 00:05:55,207 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2020-09-25 00:05:55,207 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 0))) (or (and .cse0 (<= main_~x~0 0)) (= main_~m~0 0) (and (<= 1 main_~x~0) (<= 1 main_~m~0) (or .cse0 (< main_~m~0 main_~n~0))))) [2020-09-25 00:05:55,207 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 00:05:55,208 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 00:05:55,208 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (= main_~m~0 0)) (.cse1 (<= 1 main_~x~0))) (or (and .cse0 (= main_~x~0 0)) (and .cse1 .cse0) (and .cse1 (<= 1 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0))))) [2020-09-25 00:05:55,211 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 22) the Hoare annotation is: (or (and (<= 0 main_~m~0) (<= main_~n~0 0)) (and (<= 1 main_~x~0) (< main_~m~0 main_~n~0) (<= 1 main_~m~0)) (= main_~m~0 0)) [2020-09-25 00:05:55,212 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2020-09-25 00:05:55,212 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-09-25 00:05:55,212 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 00:05:55,212 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 00:05:55,212 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 20) no Hoare annotation was computed. [2020-09-25 00:05:55,214 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 00:05:55,214 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 00:05:55,214 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 00:05:55,214 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 00:05:55,215 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-25 00:05:55,215 INFO L268 CegarLoopResult]: For program point L18-5(lines 18 20) no Hoare annotation was computed. [2020-09-25 00:05:55,216 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 00:05:55,216 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 00:05:55,216 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 00:05:55,217 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 00:05:55,218 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 00:05:55,218 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 00:05:55,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:05:55 BoogieIcfgContainer [2020-09-25 00:05:55,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:05:55,270 INFO L168 Benchmark]: Toolchain (without parser) took 3635.91 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 102.6 MB in the beginning and 110.2 MB in the end (delta: -7.6 MB). Peak memory consumption was 88.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:55,271 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:05:55,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.64 ms. Allocated memory is still 139.5 MB. Free memory was 102.0 MB in the beginning and 92.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:55,273 INFO L168 Benchmark]: Boogie Preprocessor took 118.40 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 181.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:55,274 INFO L168 Benchmark]: RCFGBuilder took 330.83 ms. Allocated memory is still 201.9 MB. Free memory was 181.5 MB in the beginning and 167.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:55,275 INFO L168 Benchmark]: TraceAbstraction took 2857.02 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 167.1 MB in the beginning and 110.2 MB in the end (delta: 56.9 MB). Peak memory consumption was 90.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:05:55,280 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 307.64 ms. Allocated memory is still 139.5 MB. Free memory was 102.0 MB in the beginning and 92.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.40 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 181.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 330.83 ms. Allocated memory is still 201.9 MB. Free memory was 181.5 MB in the beginning and 167.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2857.02 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 167.1 MB in the beginning and 110.2 MB in the end (delta: 56.9 MB). Peak memory consumption was 90.4 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: 17]: Loop Invariant Derived loop invariant: ((m == 0 && x == 0) || (1 <= x && m == 0)) || ((1 <= x && 1 <= m) && (n <= 0 || m < n)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 84 SDslu, 396 SDs, 0 SdLazy, 163 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, 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, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 26 NumberOfFragments, 80 HoareAnnotationTreeSize, 16 FomulaSimplifications, 37 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 5655 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 13/17 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...