/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/ldv-regression/test28-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:51:34,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:51:34,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:51:34,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:51:34,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:51:34,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:51:34,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:51:34,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:51:34,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:51:34,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:51:34,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:51:34,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:51:34,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:51:34,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:51:34,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:51:34,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:51:34,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:51:34,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:51:34,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:51:34,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:51:34,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:51:34,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:51:34,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:51:34,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:51:34,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:51:34,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:51:34,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:51:34,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:51:34,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:51:34,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:51:34,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:51:34,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:51:34,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:51:34,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:51:34,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:51:34,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:51:34,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:51:34,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:51:34,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:51:34,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:51:34,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:51:34,825 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 23:51:34,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:51:34,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:51:34,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:51:34,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:51:34,865 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:51:34,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:51:34,865 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:51:34,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:51:34,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:51:34,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:51:34,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:51:34,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:51:34,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:51:34,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:51:34,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:51:34,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:51:34,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:51:34,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:51:34,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:51:34,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:51:34,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:51:34,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:51:34,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:51:34,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:51:34,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:51:34,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:51:34,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:51:34,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:51:34,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:51:34,871 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; [2020-09-24 23:51:35,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:51:35,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:51:35,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:51:35,440 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:51:35,440 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:51:35,441 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test28-2.c [2020-09-24 23:51:35,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7de23a300/8f6af956774e4529913524df421817a1/FLAG6d53d4e2c [2020-09-24 23:51:36,081 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:51:36,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test28-2.c [2020-09-24 23:51:36,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7de23a300/8f6af956774e4529913524df421817a1/FLAG6d53d4e2c [2020-09-24 23:51:36,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7de23a300/8f6af956774e4529913524df421817a1 [2020-09-24 23:51:36,418 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:51:36,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:51:36,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:51:36,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:51:36,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:51:36,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36, skipping insertion in model container [2020-09-24 23:51:36,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:51:36,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:51:36,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:51:36,725 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:51:36,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:51:36,768 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:51:36,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36 WrapperNode [2020-09-24 23:51:36,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:51:36,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:51:36,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:51:36,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:51:36,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (1/1) ... [2020-09-24 23:51:36,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:51:36,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:51:36,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:51:36,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:51:36,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (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 23:51:36,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:51:36,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:51:36,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:51:36,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:51:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:51:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:51:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:51:36,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:51:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:51:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:51:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:51:36,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:51:37,286 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:51:37,287 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:51:37,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:51:37 BoogieIcfgContainer [2020-09-24 23:51:37,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:51:37,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:51:37,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:51:37,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:51:37,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:51:36" (1/3) ... [2020-09-24 23:51:37,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47618727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:51:37, skipping insertion in model container [2020-09-24 23:51:37,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:36" (2/3) ... [2020-09-24 23:51:37,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47618727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:51:37, skipping insertion in model container [2020-09-24 23:51:37,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:51:37" (3/3) ... [2020-09-24 23:51:37,303 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-2.c [2020-09-24 23:51:37,315 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:51:37,326 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:51:37,351 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:51:37,385 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:51:37,385 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:51:37,385 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:51:37,386 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:51:37,386 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:51:37,386 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:51:37,386 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:51:37,386 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:51:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 23:51:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 23:51:37,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:37,417 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 23:51:37,418 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:37,425 INFO L82 PathProgramCache]: Analyzing trace with hash -374520961, now seen corresponding path program 1 times [2020-09-24 23:51:37,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:37,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647647251] [2020-09-24 23:51:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:37,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:37,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:38,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:38,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 23:51:38,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:51:38,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-09-24 23:51:38,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:51:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:51:38,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:51:38,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:51:38,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:38,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:38,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:38,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:51:38,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:38,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:51:38,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:51:38,660 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 23:51:38,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647647251] [2020-09-24 23:51:38,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:38,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 23:51:38,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318482654] [2020-09-24 23:51:38,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:51:38,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:38,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:51:38,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:51:38,693 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 7 states. [2020-09-24 23:51:39,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:39,009 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2020-09-24 23:51:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 23:51:39,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 23:51:39,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:39,024 INFO L225 Difference]: With dead ends: 74 [2020-09-24 23:51:39,025 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 23:51:39,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:51:39,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 23:51:39,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 23:51:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 23:51:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-09-24 23:51:39,083 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 24 [2020-09-24 23:51:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:39,083 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-09-24 23:51:39,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:51:39,084 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-09-24 23:51:39,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 23:51:39,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:39,085 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 23:51:39,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:51:39,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:39,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:39,086 INFO L82 PathProgramCache]: Analyzing trace with hash -316312164, now seen corresponding path program 1 times [2020-09-24 23:51:39,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:39,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437043427] [2020-09-24 23:51:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:39,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:39,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:39,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:39,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:51:39,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:51:39,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-09-24 23:51:39,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:51:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:51:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:51:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:39,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:39,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:39,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:39,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:51:39,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:51:39,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:39,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:39,631 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 23:51:39,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437043427] [2020-09-24 23:51:39,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:39,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:51:39,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142717562] [2020-09-24 23:51:39,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:51:39,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:39,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:51:39,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:51:39,636 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 8 states. [2020-09-24 23:51:39,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:39,798 INFO L93 Difference]: Finished difference Result 41 states and 40 transitions. [2020-09-24 23:51:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 23:51:39,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 23:51:39,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:39,800 INFO L225 Difference]: With dead ends: 41 [2020-09-24 23:51:39,800 INFO L226 Difference]: Without dead ends: 27 [2020-09-24 23:51:39,801 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 23:51:39,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-24 23:51:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-24 23:51:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-24 23:51:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-09-24 23:51:39,807 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 26 [2020-09-24 23:51:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:39,808 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-09-24 23:51:39,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:51:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-09-24 23:51:39,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 23:51:39,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:39,809 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 23:51:39,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:51:39,810 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:39,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:39,811 INFO L82 PathProgramCache]: Analyzing trace with hash 2080572732, now seen corresponding path program 1 times [2020-09-24 23:51:39,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:39,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624194560] [2020-09-24 23:51:39,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:39,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:39,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:40,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:40,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:51:40,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:51:40,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-09-24 23:51:40,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:51:40,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 23:51:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 23:51:40,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:40,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:40,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:40,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:51:40,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:51:40,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:40,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:40,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:40,580 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 23:51:40,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624194560] [2020-09-24 23:51:40,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:40,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:51:40,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867434981] [2020-09-24 23:51:40,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:51:40,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:40,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:51:40,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:51:40,584 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand 8 states. [2020-09-24 23:51:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:40,705 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2020-09-24 23:51:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 23:51:40,706 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 23:51:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:40,706 INFO L225 Difference]: With dead ends: 27 [2020-09-24 23:51:40,707 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 23:51:40,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:51:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 23:51:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 23:51:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 23:51:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 23:51:40,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-24 23:51:40,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:40,710 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 23:51:40,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:51:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 23:51:40,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 23:51:40,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:51:40,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 23:51:40,753 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 23:51:40,754 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 23:51:40,754 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 23:51:40,754 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 23:51:40,754 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 23:51:40,754 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 23:51:40,754 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 23:51:40,755 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 23:51:40,755 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 23:51:40,755 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 23:51:40,755 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 28) no Hoare annotation was computed. [2020-09-24 23:51:40,755 INFO L268 CegarLoopResult]: For program point L15(lines 15 19) no Hoare annotation was computed. [2020-09-24 23:51:40,756 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 23:51:40,756 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 23:51:40,756 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-24 23:51:40,756 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-24 23:51:40,756 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 23:51:40,756 INFO L268 CegarLoopResult]: For program point L20-4(lines 20 22) no Hoare annotation was computed. [2020-09-24 23:51:40,757 INFO L268 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2020-09-24 23:51:40,757 INFO L268 CegarLoopResult]: For program point L20-6(line 20) no Hoare annotation was computed. [2020-09-24 23:51:40,757 INFO L268 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2020-09-24 23:51:40,757 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 23:51:40,757 INFO L268 CegarLoopResult]: For program point L20-8(line 20) no Hoare annotation was computed. [2020-09-24 23:51:40,757 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 23:51:40,758 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 23:51:40,758 INFO L268 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-09-24 23:51:40,758 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-24 23:51:40,758 INFO L268 CegarLoopResult]: For program point L12-5(line 12) no Hoare annotation was computed. [2020-09-24 23:51:40,758 INFO L268 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-09-24 23:51:40,758 INFO L268 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-09-24 23:51:40,758 INFO L268 CegarLoopResult]: For program point L12-8(line 12) no Hoare annotation was computed. [2020-09-24 23:51:40,759 INFO L268 CegarLoopResult]: For program point L12-9(line 12) no Hoare annotation was computed. [2020-09-24 23:51:40,759 INFO L264 CegarLoopResult]: At program point L21(lines 11 28) the Hoare annotation is: false [2020-09-24 23:51:40,759 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 23:51:40,759 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 28) no Hoare annotation was computed. [2020-09-24 23:51:40,759 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 23:51:40,760 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2020-09-24 23:51:40,760 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 28) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 23:51:40,760 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 23:51:40,760 INFO L268 CegarLoopResult]: For program point L18-1(lines 15 19) no Hoare annotation was computed. [2020-09-24 23:51:40,761 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 23:51:40,761 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 23:51:40,761 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-24 23:51:40,761 INFO L268 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-09-24 23:51:40,761 INFO L268 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-09-24 23:51:40,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:51:40 BoogieIcfgContainer [2020-09-24 23:51:40,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:51:40,781 INFO L168 Benchmark]: Toolchain (without parser) took 4359.04 ms. Allocated memory was 137.9 MB in the beginning and 249.0 MB in the end (delta: 111.1 MB). Free memory was 101.0 MB in the beginning and 172.9 MB in the end (delta: -72.0 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:40,782 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 23:51:40,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.40 ms. Allocated memory is still 137.9 MB. Free memory was 100.4 MB in the beginning and 90.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:40,784 INFO L168 Benchmark]: Boogie Preprocessor took 135.14 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 90.1 MB in the beginning and 178.8 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:40,785 INFO L168 Benchmark]: RCFGBuilder took 386.86 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 162.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:40,786 INFO L168 Benchmark]: TraceAbstraction took 3482.86 ms. Allocated memory was 200.8 MB in the beginning and 249.0 MB in the end (delta: 48.2 MB). Free memory was 162.0 MB in the beginning and 172.9 MB in the end (delta: -10.9 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:40,792 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 340.40 ms. Allocated memory is still 137.9 MB. Free memory was 100.4 MB in the beginning and 90.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.14 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 90.1 MB in the beginning and 178.8 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 386.86 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 162.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3482.86 ms. Allocated memory was 200.8 MB in the beginning and 249.0 MB in the end (delta: 48.2 MB). Free memory was 162.0 MB in the beginning and 172.9 MB in the end (delta: -10.9 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: 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: 11]: 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: 3.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 96 SDslu, 224 SDs, 0 SdLazy, 197 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 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, 5414 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...