/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:57:06,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:57:06,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:57:06,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:57:06,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:57:06,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:57:06,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:57:06,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:57:06,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:57:06,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:57:06,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:57:06,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:57:06,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:57:06,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:57:06,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:57:06,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:57:06,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:57:06,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:57:06,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:57:06,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:57:06,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:57:06,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:57:06,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:57:06,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:57:06,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:57:06,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:57:06,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:57:06,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:57:06,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:57:06,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:57:06,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:57:06,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:57:06,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:57:06,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:57:06,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:57:06,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:57:06,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:57:06,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:57:06,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:57:06,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:57:06,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:57:06,707 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 22:57:06,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:57:06,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:57:06,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:57:06,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:57:06,736 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:57:06,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:57:06,736 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:57:06,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:57:06,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:57:06,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:57:06,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:57:06,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:57:06,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:57:06,738 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:57:06,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:57:06,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:57:06,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:57:06,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:57:06,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:57:06,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:57:06,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:57:06,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:57:06,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:57:06,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:57:06,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:57:06,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:57:06,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:57:06,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:57:06,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:57:06,741 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:57:07,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:57:07,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:57:07,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:57:07,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:57:07,247 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:57:07,248 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-09-24 22:57:07,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75e83697c/45cb2d0bf16f4b4fa7b0b9f6e2b1cfad/FLAG03f3bc0a4 [2020-09-24 22:57:07,830 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:57:07,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-09-24 22:57:07,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75e83697c/45cb2d0bf16f4b4fa7b0b9f6e2b1cfad/FLAG03f3bc0a4 [2020-09-24 22:57:08,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/75e83697c/45cb2d0bf16f4b4fa7b0b9f6e2b1cfad [2020-09-24 22:57:08,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:57:08,190 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:57:08,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:57:08,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:57:08,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:57:08,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:57:08" (1/1) ... [2020-09-24 22:57:08,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba03fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:08, skipping insertion in model container [2020-09-24 22:57:08,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:57:08" (1/1) ... [2020-09-24 22:57:08,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:57:08,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:57:08,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:57:08,486 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:57:08,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:57:08,529 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:57:08,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:08 WrapperNode [2020-09-24 22:57:08,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:57:08,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:57:08,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:57:08,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:57:08,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:08" (1/1) ... [2020-09-24 22:57:08,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:08" (1/1) ... [2020-09-24 22:57:08,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:08" (1/1) ... [2020-09-24 22:57:08,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:08" (1/1) ... [2020-09-24 22:57:08,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:08" (1/1) ... [2020-09-24 22:57:08,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:08" (1/1) ... [2020-09-24 22:57:08,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:08" (1/1) ... [2020-09-24 22:57:08,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:57:08,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:57:08,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:57:08,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:57:08,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:08" (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 22:57:08,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:57:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:57:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:57:08,745 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:57:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:57:08,745 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:57:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:57:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:57:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:57:08,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:57:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:57:08,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:57:09,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:57:09,118 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:57:09,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:57:09 BoogieIcfgContainer [2020-09-24 22:57:09,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:57:09,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:57:09,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:57:09,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:57:09,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:57:08" (1/3) ... [2020-09-24 22:57:09,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de045dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:57:09, skipping insertion in model container [2020-09-24 22:57:09,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:08" (2/3) ... [2020-09-24 22:57:09,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de045dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:57:09, skipping insertion in model container [2020-09-24 22:57:09,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:57:09" (3/3) ... [2020-09-24 22:57:09,133 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-09-24 22:57:09,145 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:57:09,155 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:57:09,179 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:57:09,219 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:57:09,219 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:57:09,219 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:57:09,219 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:57:09,220 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:57:09,220 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:57:09,220 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:57:09,220 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:57:09,246 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 22:57:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 22:57:09,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:09,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:57:09,256 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:09,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:09,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1819653980, now seen corresponding path program 1 times [2020-09-24 22:57:09,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:09,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756692941] [2020-09-24 22:57:09,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:09,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:09,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:09,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:09,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 22:57:09,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:57:09,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-09-24 22:57:09,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:57:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 22:57:09,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:57:09,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:57:10,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:10,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:10,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:10,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:57:10,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:10,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:57:10,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:10,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:10,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:10,143 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 22:57:10,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756692941] [2020-09-24 22:57:10,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:57:10,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:57:10,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093952955] [2020-09-24 22:57:10,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:57:10,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:10,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:57:10,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:57:10,171 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 9 states. [2020-09-24 22:57:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:10,579 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-09-24 22:57:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:57:10,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-09-24 22:57:10,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:10,590 INFO L225 Difference]: With dead ends: 51 [2020-09-24 22:57:10,590 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 22:57:10,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:57:10,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 22:57:10,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 22:57:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 22:57:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 22:57:10,630 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-09-24 22:57:10,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:10,630 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 22:57:10,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:57:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 22:57:10,631 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 22:57:10,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:57:10,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 22:57:10,681 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 22:57:10,682 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 22:57:10,682 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 22:57:10,682 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-09-24 22:57:10,683 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:57:10,683 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 22:57:10,683 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 22:57:10,683 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 22:57:10,683 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 22:57:10,683 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-24 22:57:10,684 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 22:57:10,684 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 22:57:10,684 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-24 22:57:10,684 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-24 22:57:10,684 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 22:57:10,685 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-24 22:57:10,685 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 72) no Hoare annotation was computed. [2020-09-24 22:57:10,685 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-24 22:57:10,685 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-24 22:57:10,685 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-24 22:57:10,685 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 22:57:10,686 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 22:57:10,686 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 22:57:10,686 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 22:57:10,686 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 72) no Hoare annotation was computed. [2020-09-24 22:57:10,686 INFO L264 CegarLoopResult]: At program point L44(lines 31 65) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-09-24 22:57:10,687 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-24 22:57:10,687 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 22:57:10,687 INFO L268 CegarLoopResult]: For program point L38(lines 38 64) no Hoare annotation was computed. [2020-09-24 22:57:10,687 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 22:57:10,687 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 22:57:10,688 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 55) no Hoare annotation was computed. [2020-09-24 22:57:10,688 INFO L268 CegarLoopResult]: For program point L30(lines 30 69) no Hoare annotation was computed. [2020-09-24 22:57:10,688 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 72) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-09-24 22:57:10,688 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-09-24 22:57:10,689 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 22:57:10,689 INFO L268 CegarLoopResult]: For program point L24(lines 24 70) no Hoare annotation was computed. [2020-09-24 22:57:10,689 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-24 22:57:10,689 INFO L268 CegarLoopResult]: For program point L53(lines 53 62) no Hoare annotation was computed. [2020-09-24 22:57:10,689 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 22:57:10,689 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-24 22:57:10,690 INFO L268 CegarLoopResult]: For program point L18(lines 18 71) no Hoare annotation was computed. [2020-09-24 22:57:10,690 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-24 22:57:10,690 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 22:57:10,690 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 22:57:10,690 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 22:57:10,691 INFO L268 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-09-24 22:57:10,691 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 22:57:10,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:57:10 BoogieIcfgContainer [2020-09-24 22:57:10,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:57:10,717 INFO L168 Benchmark]: Toolchain (without parser) took 2530.25 ms. Allocated memory was 140.5 MB in the beginning and 234.9 MB in the end (delta: 94.4 MB). Free memory was 103.7 MB in the beginning and 193.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:10,718 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:57:10,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.85 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 93.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:10,720 INFO L168 Benchmark]: Boogie Preprocessor took 131.99 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 93.0 MB in the beginning and 182.1 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:10,721 INFO L168 Benchmark]: RCFGBuilder took 459.72 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 167.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:10,723 INFO L168 Benchmark]: TraceAbstraction took 1589.02 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 167.2 MB in the beginning and 193.4 MB in the end (delta: -26.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:57:10,727 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.85 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 93.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.99 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 93.0 MB in the beginning and 182.1 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.72 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 167.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1589.02 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 167.2 MB in the beginning and 193.4 MB in the end (delta: -26.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: 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: 31]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 72 SDslu, 73 SDs, 0 SdLazy, 135 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 24 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1890 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...