/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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:31:20,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:31:20,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:31:20,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:31:20,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:31:20,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:31:20,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:31:20,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:31:20,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:31:20,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:31:20,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:31:20,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:31:20,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:31:20,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:31:20,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:31:20,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:31:20,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:31:20,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:31:20,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:31:20,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:31:20,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:31:20,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:31:20,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:31:20,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:31:20,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:31:20,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:31:20,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:31:20,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:31:20,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:31:20,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:31:20,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:31:20,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:31:20,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:31:20,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:31:20,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:31:20,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:31:20,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:31:20,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:31:20,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:31:20,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:31:20,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:31:20,747 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 [2020-09-21 11:31:20,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:31:20,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:31:20,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:31:20,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:31:20,796 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:31:20,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:31:20,797 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:31:20,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:31:20,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:31:20,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:31:20,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:31:20,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:31:20,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:31:20,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:31:20,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:31:20,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:31:20,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:31:20,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:31:20,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:31:20,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:31:20,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:31:20,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:31:20,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:31:20,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:31:20,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:31:20,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:31:20,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:31:20,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:31:20,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:31:20,803 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:31:21,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:31:21,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:31:21,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:31:21,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:31:21,316 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:31:21,318 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2020-09-21 11:31:21,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52a6d52d7/659795d45a554c46b013914a2cdc8a7d/FLAG0f989dcd6 [2020-09-21 11:31:22,014 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:31:22,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2020-09-21 11:31:22,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52a6d52d7/659795d45a554c46b013914a2cdc8a7d/FLAG0f989dcd6 [2020-09-21 11:31:22,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52a6d52d7/659795d45a554c46b013914a2cdc8a7d [2020-09-21 11:31:22,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:31:22,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:31:22,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:31:22,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:31:22,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:31:22,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:31:22" (1/1) ... [2020-09-21 11:31:22,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43965ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:22, skipping insertion in model container [2020-09-21 11:31:22,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:31:22" (1/1) ... [2020-09-21 11:31:22,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:31:22,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:31:22,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:31:22,645 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:31:22,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:31:22,683 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:31:22,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:22 WrapperNode [2020-09-21 11:31:22,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:31:22,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:31:22,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:31:22,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:31:22,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:22" (1/1) ... [2020-09-21 11:31:22,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:22" (1/1) ... [2020-09-21 11:31:22,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:22" (1/1) ... [2020-09-21 11:31:22,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:22" (1/1) ... [2020-09-21 11:31:22,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:22" (1/1) ... [2020-09-21 11:31:22,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:22" (1/1) ... [2020-09-21 11:31:22,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:22" (1/1) ... [2020-09-21 11:31:22,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:31:22,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:31:22,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:31:22,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:31:22,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:22" (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 [2020-09-21 11:31:22,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:31:22,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:31:22,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:31:22,887 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2020-09-21 11:31:22,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:31:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:31:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:31:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2020-09-21 11:31:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:31:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:31:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:31:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:31:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:31:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:31:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:31:23,168 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:31:23,168 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:31:23,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:31:23 BoogieIcfgContainer [2020-09-21 11:31:23,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:31:23,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:31:23,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:31:23,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:31:23,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:31:22" (1/3) ... [2020-09-21 11:31:23,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dd8595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:31:23, skipping insertion in model container [2020-09-21 11:31:23,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:31:22" (2/3) ... [2020-09-21 11:31:23,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dd8595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:31:23, skipping insertion in model container [2020-09-21 11:31:23,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:31:23" (3/3) ... [2020-09-21 11:31:23,197 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2020-09-21 11:31:23,223 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:31:23,238 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:31:23,263 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:31:23,290 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:31:23,290 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:31:23,291 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:31:23,291 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:31:23,291 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:31:23,291 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:31:23,291 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:31:23,291 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:31:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-09-21 11:31:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:31:23,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:23,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:23,321 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:23,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1626450083, now seen corresponding path program 1 times [2020-09-21 11:31:23,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:23,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868306269] [2020-09-21 11:31:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:23,589 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:23,590 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:23,590 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:23,590 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:23,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:31:23,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-21 11:31:23,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:31:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:31:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:23,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:23,810 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:23,810 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:23,810 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:23,811 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:23,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:23,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:23,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:23,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:23,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:23,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:23,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:23,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868306269] [2020-09-21 11:31:23,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:23,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:31:23,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286892824] [2020-09-21 11:31:23,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:31:23,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:23,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:31:23,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:31:23,859 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 8 states. [2020-09-21 11:31:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:24,185 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-09-21 11:31:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:31:24,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-09-21 11:31:24,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:24,199 INFO L225 Difference]: With dead ends: 55 [2020-09-21 11:31:24,200 INFO L226 Difference]: Without dead ends: 26 [2020-09-21 11:31:24,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:31:24,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-21 11:31:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-09-21 11:31:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-21 11:31:24,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-09-21 11:31:24,263 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2020-09-21 11:31:24,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:24,264 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-09-21 11:31:24,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:31:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-09-21 11:31:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:31:24,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:24,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:24,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:31:24,267 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:24,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:24,267 INFO L82 PathProgramCache]: Analyzing trace with hash -519824651, now seen corresponding path program 1 times [2020-09-21 11:31:24,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:24,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101500112] [2020-09-21 11:31:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:24,356 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:24,356 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:24,357 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:24,357 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:24,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 11:31:24,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:24,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 11:31:24,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:24,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:31:24,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:24,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 11:31:24,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:24,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:24,504 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:24,505 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:24,505 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:24,505 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:24,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:24,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:24,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:31:24,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:24,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:24,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:24,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:24,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:24,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:31:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:24,521 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:24,521 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:24,521 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:24,522 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:24,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:24,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:24,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:31:24,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:24,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:24,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:31:24,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101500112] [2020-09-21 11:31:24,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:31:24,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:31:24,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092006778] [2020-09-21 11:31:24,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:31:24,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:24,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:31:24,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:31:24,536 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states. [2020-09-21 11:31:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:24,812 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-09-21 11:31:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:31:24,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-21 11:31:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:24,815 INFO L225 Difference]: With dead ends: 36 [2020-09-21 11:31:24,815 INFO L226 Difference]: Without dead ends: 34 [2020-09-21 11:31:24,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:31:24,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-21 11:31:24,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-21 11:31:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 11:31:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-21 11:31:24,827 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2020-09-21 11:31:24,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:24,827 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-21 11:31:24,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:31:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-21 11:31:24,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 11:31:24,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:31:24,829 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:31:24,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:31:24,829 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:31:24,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:31:24,830 INFO L82 PathProgramCache]: Analyzing trace with hash -2027370867, now seen corresponding path program 2 times [2020-09-21 11:31:24,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:31:24,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429658106] [2020-09-21 11:31:24,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:31:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:24,900 FATAL L256 erpolLogProxyWrapper]: Difference in size: 3 [2020-09-21 11:31:24,900 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:24,900 FATAL L256 erpolLogProxyWrapper]: Difference in width: 5 [2020-09-21 11:31:24,900 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:24,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 11:31:24,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:24,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 11:31:24,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:31:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:31:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 11:31:24,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 11:31:25,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:31:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:25,026 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:25,026 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:25,026 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:25,027 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:25,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:31:25,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:25,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:25,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:31:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:25,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:31:25,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:31:25,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:31:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:25,050 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:25,050 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:25,051 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:25,051 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:25,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:25,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:25,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:31:25,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:25,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:25,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:25,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:25,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:31:25,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 11:31:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:31:25,064 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:31:25,064 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:31:25,064 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:31:25,064 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:31:25,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:31:25,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:31:25,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:31:25,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:31:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:31:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:31:25,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:31:25,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:31:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 11:31:25,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429658106] [2020-09-21 11:31:25,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:31:25,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:31:25,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619454732] [2020-09-21 11:31:25,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:31:25,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:31:25,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:31:25,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:31:25,086 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2020-09-21 11:31:25,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:31:25,249 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-09-21 11:31:25,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:31:25,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-09-21 11:31:25,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:31:25,251 INFO L225 Difference]: With dead ends: 35 [2020-09-21 11:31:25,251 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:31:25,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:31:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:31:25,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:31:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:31:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:31:25,254 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-09-21 11:31:25,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:31:25,254 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:31:25,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:31:25,254 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:31:25,255 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:31:25,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:31:25,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:31:25,588 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2020-09-21 11:31:25,592 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:31:25,592 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~tmp~0.base |old(~tmp~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(#valid)| |#valid|)) [2020-09-21 11:31:25,592 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:31:25,593 INFO L271 CegarLoopResult]: At program point glob2ENTRY(lines 14 25) the Hoare annotation is: true [2020-09-21 11:31:25,593 INFO L268 CegarLoopResult]: For program point glob2EXIT(lines 14 25) no Hoare annotation was computed. [2020-09-21 11:31:25,593 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse1 (+ |glob2_#in~pathbuf.offset| 4)) (.cse0 (= ~tmp~0.base glob2_~p~0.base))) (or (and (<= glob2_~p~0.offset ~tmp~0.offset) .cse0 (<= glob2_~pathlim.offset glob2_~p~0.offset)) (not (<= |glob2_#in~pathlim.offset| .cse1)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (<= .cse1 ~tmp~0.offset)) (let ((.cse2 (+ glob2_~p~0.offset 4))) (and (<= .cse2 ~tmp~0.offset) (<= glob2_~pathlim.offset .cse2) .cse0)))) [2020-09-21 11:31:25,593 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-21 11:31:25,594 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 22) no Hoare annotation was computed. [2020-09-21 11:31:25,594 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 22) the Hoare annotation is: (let ((.cse1 (+ |glob2_#in~pathbuf.offset| 4)) (.cse0 (= ~tmp~0.base glob2_~p~0.base))) (or (and (<= glob2_~p~0.offset ~tmp~0.offset) .cse0 (<= glob2_~pathlim.offset glob2_~p~0.offset)) (not (<= |glob2_#in~pathlim.offset| .cse1)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (<= (+ glob2_~pathlim.offset 4) glob2_~p~0.offset) (not (<= .cse1 ~tmp~0.offset)) (let ((.cse2 (+ glob2_~p~0.offset 4))) (and (<= .cse2 ~tmp~0.offset) (<= glob2_~pathlim.offset .cse2) .cse0)))) [2020-09-21 11:31:25,594 INFO L268 CegarLoopResult]: For program point L18-4(lines 18 22) no Hoare annotation was computed. [2020-09-21 11:31:25,594 INFO L268 CegarLoopResult]: For program point glob2FINAL(lines 14 25) no Hoare annotation was computed. [2020-09-21 11:31:25,594 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:31:25,595 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:31:25,595 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:31:25,595 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:31:25,595 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 27 38) the Hoare annotation is: (and (= |old(~tmp~0.base)| ~tmp~0.base) (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(#valid)| |#valid|)) [2020-09-21 11:31:25,595 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 38) no Hoare annotation was computed. [2020-09-21 11:31:25,596 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 38) no Hoare annotation was computed. [2020-09-21 11:31:25,596 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (+ |main_~#pathbuf~0.offset| 4))) (and (<= main_~bound~0.offset .cse0) (<= .cse0 ~tmp~0.offset) (= ~tmp~0.base |main_~#pathbuf~0.base|))) [2020-09-21 11:31:25,596 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-09-21 11:31:25,596 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-21 11:31:25,596 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-21 11:31:25,596 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-21 11:31:25,597 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-21 11:31:25,597 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-21 11:31:25,597 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-21 11:31:25,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:31:25 BoogieIcfgContainer [2020-09-21 11:31:25,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:31:25,624 INFO L168 Benchmark]: Toolchain (without parser) took 3257.12 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 102.4 MB in the beginning and 204.9 MB in the end (delta: -102.4 MB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:25,625 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:31:25,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.14 ms. Allocated memory is still 140.0 MB. Free memory was 102.0 MB in the beginning and 92.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:25,627 INFO L168 Benchmark]: Boogie Preprocessor took 120.83 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.1 MB in the beginning and 180.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:25,628 INFO L168 Benchmark]: RCFGBuilder took 374.99 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 165.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:25,629 INFO L168 Benchmark]: TraceAbstraction took 2439.43 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 164.7 MB in the beginning and 204.9 MB in the end (delta: -40.2 MB). Peak memory consumption was 116.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:31:25,634 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 313.14 ms. Allocated memory is still 140.0 MB. Free memory was 102.0 MB in the beginning and 92.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.83 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.1 MB in the beginning and 180.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 374.99 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 165.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2439.43 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 164.7 MB in the beginning and 204.9 MB in the end (delta: -40.2 MB). Peak memory consumption was 116.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 18]: Loop Invariant Derived loop invariant: ((((((p <= tmp && tmp == p) && pathlim <= p) || !(pathlim <= pathbuf + 4)) || !(tmp == pathbuf)) || pathlim + 4 <= p) || !(pathbuf + 4 <= tmp)) || ((p + 4 <= tmp && pathlim <= p + 4) && tmp == p) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 83 SDslu, 93 SDs, 0 SdLazy, 233 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 131 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 215 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 5012 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 18/20 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...