/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test29-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:29:25,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:29:25,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:29:25,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:29:25,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:29:25,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:29:25,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:29:25,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:29:25,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:29:25,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:29:25,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:29:25,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:29:25,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:29:25,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:29:25,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:29:25,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:29:25,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:29:25,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:29:25,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:29:25,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:29:25,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:29:25,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:29:25,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:29:25,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:29:25,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:29:25,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:29:25,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:29:25,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:29:25,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:29:25,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:29:25,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:29:25,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:29:25,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:29:25,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:29:25,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:29:25,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:29:25,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:29:25,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:29:25,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:29:25,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:29:25,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:29:25,826 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 [2020-09-24 20:29:25,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:29:25,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:29:25,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:29:25,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:29:25,876 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:29:25,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:29:25,877 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:29:25,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:29:25,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:29:25,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:29:25,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:29:25,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:29:25,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:29:25,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:29:25,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:29:25,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:29:25,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:29:25,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:29:25,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:29:25,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:29:25,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:29:25,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:29:25,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:29:25,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:29:25,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:29:25,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:29:25,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:29:25,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:29:25,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:29:25,883 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:29:26,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:29:26,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:29:26,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:29:26,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:29:26,420 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:29:26,421 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c [2020-09-24 20:29:26,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24ac3824e/70a5c872d24f472589d354f2afd826a4/FLAG59e266551 [2020-09-24 20:29:27,045 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:29:27,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test29-2.c [2020-09-24 20:29:27,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24ac3824e/70a5c872d24f472589d354f2afd826a4/FLAG59e266551 [2020-09-24 20:29:27,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24ac3824e/70a5c872d24f472589d354f2afd826a4 [2020-09-24 20:29:27,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:29:27,405 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:29:27,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:29:27,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:29:27,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:29:27,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:29:27" (1/1) ... [2020-09-24 20:29:27,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1613be08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:27, skipping insertion in model container [2020-09-24 20:29:27,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:29:27" (1/1) ... [2020-09-24 20:29:27,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:29:27,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:29:27,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:29:27,691 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:29:27,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:29:27,726 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:29:27,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:27 WrapperNode [2020-09-24 20:29:27,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:29:27,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:29:27,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:29:27,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:29:27,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:27" (1/1) ... [2020-09-24 20:29:27,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:27" (1/1) ... [2020-09-24 20:29:27,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:27" (1/1) ... [2020-09-24 20:29:27,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:27" (1/1) ... [2020-09-24 20:29:27,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:27" (1/1) ... [2020-09-24 20:29:27,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:27" (1/1) ... [2020-09-24 20:29:27,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:27" (1/1) ... [2020-09-24 20:29:27,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:29:27,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:29:27,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:29:27,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:29:27,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:27" (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 [2020-09-24 20:29:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:29:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:29:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:29:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:29:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:29:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:29:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:29:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:29:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:29:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:29:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:29:27,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:29:28,224 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:29:28,224 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:29:28,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:29:28 BoogieIcfgContainer [2020-09-24 20:29:28,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:29:28,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:29:28,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:29:28,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:29:28,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:29:27" (1/3) ... [2020-09-24 20:29:28,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48faae44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:29:28, skipping insertion in model container [2020-09-24 20:29:28,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:27" (2/3) ... [2020-09-24 20:29:28,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48faae44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:29:28, skipping insertion in model container [2020-09-24 20:29:28,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:29:28" (3/3) ... [2020-09-24 20:29:28,244 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c [2020-09-24 20:29:28,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:29:28,270 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:29:28,320 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:29:28,358 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:29:28,358 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:29:28,358 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:29:28,358 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:29:28,359 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:29:28,359 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:29:28,359 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:29:28,359 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:29:28,381 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 20:29:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 20:29:28,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:28,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:29:28,390 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:28,396 INFO L82 PathProgramCache]: Analyzing trace with hash -374520961, now seen corresponding path program 1 times [2020-09-24 20:29:28,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:28,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390040367] [2020-09-24 20:29:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:28,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:28,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:28,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:29,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:29,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:29,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:29:29,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:29:29,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-09-24 20:29:29,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:29:29,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:29:29,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:29:29,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 20:29:29,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:29,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:29,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:29,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:29,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:29,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:29:29,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:29,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:29,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:29:29,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390040367] [2020-09-24 20:29:29,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:29,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:29:29,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253014922] [2020-09-24 20:29:29,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:29:29,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:29,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:29:29,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:29:29,740 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 7 states. [2020-09-24 20:29:30,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:30,023 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-09-24 20:29:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:29:30,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 20:29:30,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:30,039 INFO L225 Difference]: With dead ends: 74 [2020-09-24 20:29:30,040 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:29:30,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:29:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:29:30,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:29:30,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:29:30,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-09-24 20:29:30,099 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 24 [2020-09-24 20:29:30,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:30,099 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-09-24 20:29:30,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:29:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-09-24 20:29:30,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 20:29:30,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:30,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:29:30,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:29:30,102 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:30,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:30,102 INFO L82 PathProgramCache]: Analyzing trace with hash -316312164, now seen corresponding path program 1 times [2020-09-24 20:29:30,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:30,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333391330] [2020-09-24 20:29:30,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:30,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:30,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:30,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:30,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:29:30,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:29:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-24 20:29:30,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:29:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:29:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:29:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:30,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:30,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:30,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:30,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:30,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:30,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:29:30,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:30,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:30,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:29:30,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333391330] [2020-09-24 20:29:30,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:30,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:29:30,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904489673] [2020-09-24 20:29:30,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:29:30,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:30,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:29:30,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:29:30,606 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 8 states. [2020-09-24 20:29:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:30,754 INFO L93 Difference]: Finished difference Result 41 states and 40 transitions. [2020-09-24 20:29:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:29:30,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 20:29:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:30,756 INFO L225 Difference]: With dead ends: 41 [2020-09-24 20:29:30,757 INFO L226 Difference]: Without dead ends: 27 [2020-09-24 20:29:30,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:29:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-24 20:29:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-24 20:29:30,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-24 20:29:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-09-24 20:29:30,765 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 26 [2020-09-24 20:29:30,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:30,765 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-09-24 20:29:30,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:29:30,765 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-09-24 20:29:30,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 20:29:30,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:30,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:29:30,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:29:30,767 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:30,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:30,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2080572732, now seen corresponding path program 1 times [2020-09-24 20:29:30,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:30,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683626617] [2020-09-24 20:29:30,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:30,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:31,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:31,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:29:31,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:29:31,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-09-24 20:29:31,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:29:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:29:31,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:29:31,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:31,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:31,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:31,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:31,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:31,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:29:31,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:31,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:29:31,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683626617] [2020-09-24 20:29:31,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:31,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:29:31,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274473501] [2020-09-24 20:29:31,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:29:31,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:31,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:29:31,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:29:31,509 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand 8 states. [2020-09-24 20:29:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:31,610 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2020-09-24 20:29:31,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:29:31,611 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 20:29:31,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:31,611 INFO L225 Difference]: With dead ends: 27 [2020-09-24 20:29:31,611 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:29:31,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:29:31,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:29:31,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:29:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:29:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:29:31,614 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-24 20:29:31,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:31,614 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:29:31,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:29:31,614 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:29:31,614 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:29:31,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:29:31,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:29:31,655 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 20:29:31,655 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 20:29:31,655 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:29:31,656 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 20:29:31,656 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:29:31,656 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:29:31,656 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:29:31,656 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:29:31,656 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:29:31,657 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-09-24 20:29:31,657 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 20:29:31,657 INFO L268 CegarLoopResult]: For program point L19-1(lines 16 20) no Hoare annotation was computed. [2020-09-24 20:29:31,657 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 20:29:31,657 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 20:29:31,657 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-24 20:29:31,658 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-24 20:29:31,658 INFO L268 CegarLoopResult]: For program point L15-5(line 15) no Hoare annotation was computed. [2020-09-24 20:29:31,658 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 20:29:31,658 INFO L268 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-09-24 20:29:31,658 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 20:29:31,658 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 20:29:31,659 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 20:29:31,659 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 20:29:31,659 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 20:29:31,659 INFO L268 CegarLoopResult]: For program point L21-4(lines 21 23) no Hoare annotation was computed. [2020-09-24 20:29:31,659 INFO L268 CegarLoopResult]: For program point L21-5(line 21) no Hoare annotation was computed. [2020-09-24 20:29:31,659 INFO L268 CegarLoopResult]: For program point L21-6(line 21) no Hoare annotation was computed. [2020-09-24 20:29:31,660 INFO L268 CegarLoopResult]: For program point L21-7(line 21) no Hoare annotation was computed. [2020-09-24 20:29:31,660 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 20:29:31,660 INFO L268 CegarLoopResult]: For program point L21-8(line 21) no Hoare annotation was computed. [2020-09-24 20:29:31,660 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-09-24 20:29:31,660 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 20:29:31,660 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-24 20:29:31,661 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-24 20:29:31,661 INFO L268 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-09-24 20:29:31,661 INFO L268 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-09-24 20:29:31,661 INFO L268 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-09-24 20:29:31,661 INFO L268 CegarLoopResult]: For program point L13-7(line 13) no Hoare annotation was computed. [2020-09-24 20:29:31,661 INFO L268 CegarLoopResult]: For program point L13-8(line 13) no Hoare annotation was computed. [2020-09-24 20:29:31,662 INFO L268 CegarLoopResult]: For program point L13-9(line 13) no Hoare annotation was computed. [2020-09-24 20:29:31,662 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-09-24 20:29:31,662 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 20:29:31,662 INFO L264 CegarLoopResult]: At program point L22(lines 12 29) the Hoare annotation is: false [2020-09-24 20:29:31,662 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 20:29:31,663 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 20:29:31,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:29:31 BoogieIcfgContainer [2020-09-24 20:29:31,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:29:31,680 INFO L168 Benchmark]: Toolchain (without parser) took 4277.60 ms. Allocated memory was 138.9 MB in the beginning and 248.5 MB in the end (delta: 109.6 MB). Free memory was 102.0 MB in the beginning and 178.9 MB in the end (delta: -77.0 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:31,681 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 20:29:31,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.27 ms. Allocated memory is still 138.9 MB. Free memory was 101.3 MB in the beginning and 91.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:31,683 INFO L168 Benchmark]: Boogie Preprocessor took 142.64 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 91.5 MB in the beginning and 178.3 MB in the end (delta: -86.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:31,684 INFO L168 Benchmark]: RCFGBuilder took 360.72 ms. Allocated memory is still 200.3 MB. Free memory was 178.3 MB in the beginning and 161.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:31,687 INFO L168 Benchmark]: TraceAbstraction took 3443.50 ms. Allocated memory was 200.3 MB in the beginning and 248.5 MB in the end (delta: 48.2 MB). Free memory was 161.6 MB in the beginning and 178.9 MB in the end (delta: -17.3 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:29:31,692 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.27 ms. Allocated memory is still 138.9 MB. Free memory was 101.3 MB in the beginning and 91.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.64 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 91.5 MB in the beginning and 178.3 MB in the end (delta: -86.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 360.72 ms. Allocated memory is still 200.3 MB. Free memory was 178.3 MB in the beginning and 161.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3443.50 ms. Allocated memory was 200.3 MB in the beginning and 248.5 MB in the end (delta: 48.2 MB). Free memory was 161.6 MB in the beginning and 178.9 MB in the end (delta: -17.3 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 88 SDslu, 223 SDs, 0 SdLazy, 194 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 16 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 4989 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...