/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/nec40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:24:29,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:24:29,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:24:29,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:24:29,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:24:29,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:24:29,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:24:29,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:24:29,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:24:29,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:24:29,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:24:29,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:24:29,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:24:29,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:24:29,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:24:29,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:24:29,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:24:29,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:24:29,893 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:24:29,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:24:29,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:24:29,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:24:29,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:24:29,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:24:29,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:24:29,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:24:29,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:24:29,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:24:29,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:24:29,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:24:29,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:24:29,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:24:29,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:24:29,900 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:24:29,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:24:29,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:24:29,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:24:29,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:24:29,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:24:29,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:24:29,902 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:24:30,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:24:30,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:24:30,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:24:30,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:24:30,355 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:24:30,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec40.c [2020-10-24 02:24:30,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db14f1109/8ea60864248e464c9550859a328942dc/FLAGfcfb54929 [2020-10-24 02:24:31,084 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:24:31,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec40.c [2020-10-24 02:24:31,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db14f1109/8ea60864248e464c9550859a328942dc/FLAGfcfb54929 [2020-10-24 02:24:31,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db14f1109/8ea60864248e464c9550859a328942dc [2020-10-24 02:24:31,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:24:31,468 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:24:31,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:24:31,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:24:31,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:24:31,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:31" (1/1) ... [2020-10-24 02:24:31,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657e182d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:31, skipping insertion in model container [2020-10-24 02:24:31,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:31" (1/1) ... [2020-10-24 02:24:31,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:24:31,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:24:31,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:24:31,733 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:24:31,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:24:31,767 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:24:31,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:31 WrapperNode [2020-10-24 02:24:31,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:24:31,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:24:31,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:24:31,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:24:31,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:31" (1/1) ... [2020-10-24 02:24:31,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:31" (1/1) ... [2020-10-24 02:24:31,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:31" (1/1) ... [2020-10-24 02:24:31,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:31" (1/1) ... [2020-10-24 02:24:31,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:31" (1/1) ... [2020-10-24 02:24:31,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:31" (1/1) ... [2020-10-24 02:24:31,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:31" (1/1) ... [2020-10-24 02:24:31,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:24:31,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:24:31,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:24:31,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:24:31,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-10-24 02:24:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:24:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:24:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:24:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:24:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:24:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:24:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:24:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:24:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:24:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:24:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:24:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:24:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:24:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:24:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:24:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:24:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:24:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:24:32,191 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:24:32,191 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 02:24:32,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:32 BoogieIcfgContainer [2020-10-24 02:24:32,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:24:32,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:24:32,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:24:32,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:24:32,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:24:31" (1/3) ... [2020-10-24 02:24:32,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a87b1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:32, skipping insertion in model container [2020-10-24 02:24:32,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:31" (2/3) ... [2020-10-24 02:24:32,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a87b1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:32, skipping insertion in model container [2020-10-24 02:24:32,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:32" (3/3) ... [2020-10-24 02:24:32,204 INFO L111 eAbstractionObserver]: Analyzing ICFG nec40.c [2020-10-24 02:24:32,218 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:24:32,224 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:24:32,250 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:24:32,305 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:24:32,306 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:24:32,306 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:24:32,306 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:24:32,306 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:24:32,306 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:24:32,306 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:24:32,307 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:24:32,334 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-24 02:24:32,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-24 02:24:32,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:24:32,349 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, 1, 1, 1, 1, 1, 1] [2020-10-24 02:24:32,350 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:24:32,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:24:32,366 INFO L82 PathProgramCache]: Analyzing trace with hash 162985152, now seen corresponding path program 1 times [2020-10-24 02:24:32,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:24:32,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548327892] [2020-10-24 02:24:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:24:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:32,870 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-24 02:24:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:24:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:24:32,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548327892] [2020-10-24 02:24:32,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:24:32,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 02:24:32,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646225336] [2020-10-24 02:24:32,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 02:24:32,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:24:32,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 02:24:32,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:24:32,971 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2020-10-24 02:24:33,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:24:33,166 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-10-24 02:24:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 02:24:33,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-24 02:24:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:24:33,182 INFO L225 Difference]: With dead ends: 74 [2020-10-24 02:24:33,182 INFO L226 Difference]: Without dead ends: 44 [2020-10-24 02:24:33,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:24:33,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-24 02:24:33,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-24 02:24:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-24 02:24:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2020-10-24 02:24:33,269 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 34 [2020-10-24 02:24:33,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:24:33,270 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2020-10-24 02:24:33,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 02:24:33,270 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2020-10-24 02:24:33,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-24 02:24:33,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:24:33,274 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:24:33,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:24:33,275 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:24:33,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:24:33,276 INFO L82 PathProgramCache]: Analyzing trace with hash 567536498, now seen corresponding path program 1 times [2020-10-24 02:24:33,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:24:33,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108015298] [2020-10-24 02:24:33,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:24:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:33,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:24:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:24:33,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108015298] [2020-10-24 02:24:33,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:24:33,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 02:24:33,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606049711] [2020-10-24 02:24:33,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 02:24:33,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:24:33,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 02:24:33,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 02:24:33,492 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 4 states. [2020-10-24 02:24:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:24:33,677 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-10-24 02:24:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 02:24:33,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-24 02:24:33,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:24:33,680 INFO L225 Difference]: With dead ends: 64 [2020-10-24 02:24:33,680 INFO L226 Difference]: Without dead ends: 52 [2020-10-24 02:24:33,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:24:33,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-24 02:24:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-24 02:24:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-24 02:24:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-10-24 02:24:33,695 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 36 [2020-10-24 02:24:33,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:24:33,695 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-10-24 02:24:33,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 02:24:33,696 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-10-24 02:24:33,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-24 02:24:33,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:24:33,698 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:24:33,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:24:33,698 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:24:33,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:24:33,699 INFO L82 PathProgramCache]: Analyzing trace with hash 326030165, now seen corresponding path program 1 times [2020-10-24 02:24:33,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:24:33,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778052152] [2020-10-24 02:24:33,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:24:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:33,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:24:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:24:33,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778052152] [2020-10-24 02:24:33,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:24:33,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 02:24:33,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807014107] [2020-10-24 02:24:33,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:24:33,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:24:33,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:24:33,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:24:33,903 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 5 states. [2020-10-24 02:24:34,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:24:34,024 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-10-24 02:24:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:24:34,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-24 02:24:34,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:24:34,025 INFO L225 Difference]: With dead ends: 46 [2020-10-24 02:24:34,026 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:24:34,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:24:34,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:24:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:24:34,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:24:34,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:24:34,028 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-10-24 02:24:34,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:24:34,028 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:24:34,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:24:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:24:34,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:24:34,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:24:34,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:24:34,401 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-24 02:24:34,402 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-24 02:24:34,402 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-24 02:24:34,402 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-24 02:24:34,402 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-24 02:24:34,402 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-24 02:24:34,403 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:24:34,403 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-24 02:24:34,403 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 02:24:34,403 INFO L277 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-10-24 02:24:34,403 INFO L270 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= ~i~0 0)) [2020-10-24 02:24:34,404 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) [2020-10-24 02:24:34,404 INFO L277 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-10-24 02:24:34,404 INFO L270 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= ~i~0 0)) [2020-10-24 02:24:34,404 INFO L270 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) [2020-10-24 02:24:34,404 INFO L270 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= ~i~0 0)) [2020-10-24 02:24:34,405 INFO L270 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) [2020-10-24 02:24:34,405 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~j~0 |old(~j~0)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#memory_int| |old(#memory_int)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |~#y~0.offset| |old(~#y~0.offset)|) (= ~i~0 |old(~i~0)|) (= ~k~0 |old(~k~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#y~0.base| |old(~#y~0.base)|)) [2020-10-24 02:24:34,405 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-24 02:24:34,405 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-24 02:24:34,406 INFO L270 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= ~i~0 0)) [2020-10-24 02:24:34,406 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:24:34,406 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= ~i~0 0)) [2020-10-24 02:24:34,406 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 02:24:34,406 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 02:24:34,407 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,407 INFO L270 CegarLoopResult]: At program point L27-1(lines 27 28) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,407 INFO L270 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,407 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 16 31) the Hoare annotation is: true [2020-10-24 02:24:34,407 INFO L277 CegarLoopResult]: At program point L27-3(line 27) the Hoare annotation is: true [2020-10-24 02:24:34,407 INFO L270 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,408 INFO L270 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,408 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= |old(~i~0)| 0)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)))) [2020-10-24 02:24:34,408 INFO L270 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,408 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (and (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= ~i~0 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,409 INFO L270 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= |old(~i~0)| 0)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)))) [2020-10-24 02:24:34,409 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 16 31) the Hoare annotation is: true [2020-10-24 02:24:34,409 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 16 31) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (and (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= ~i~0 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,409 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,409 INFO L277 CegarLoopResult]: At program point L26(lines 26 28) the Hoare annotation is: true [2020-10-24 02:24:34,410 INFO L270 CegarLoopResult]: At program point L24(lines 16 31) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (= ~i~0 0) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,410 INFO L270 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,410 INFO L270 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,410 INFO L270 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,411 INFO L270 CegarLoopResult]: At program point L20-1(lines 20 23) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= |old(~i~0)| 0)) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= |main_#t~mem8| 0) (= ~i~0 0)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))))) [2020-10-24 02:24:34,411 INFO L270 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (= ~i~0 0) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,411 INFO L270 CegarLoopResult]: At program point L20-4(line 20) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,411 INFO L270 CegarLoopResult]: At program point L20-5(lines 20 23) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= |old(~i~0)| 0)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)))) [2020-10-24 02:24:34,412 INFO L270 CegarLoopResult]: At program point L20-6(lines 20 23) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (= ~i~0 0) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-10-24 02:24:34,412 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-24 02:24:34,412 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2020-10-24 02:24:34,412 INFO L277 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: true [2020-10-24 02:24:34,412 INFO L277 CegarLoopResult]: At program point L6(lines 6 8) the Hoare annotation is: true [2020-10-24 02:24:34,412 INFO L277 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: true [2020-10-24 02:24:34,413 INFO L277 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-10-24 02:24:34,422 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:707) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:267) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-24 02:24:34,426 INFO L168 Benchmark]: Toolchain (without parser) took 2963.85 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 127.9 MB in the beginning and 76.6 MB in the end (delta: 51.3 MB). Peak memory consumption was 90.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:34,427 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:24:34,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.53 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:34,429 INFO L168 Benchmark]: Boogie Preprocessor took 35.20 ms. Allocated memory is still 151.0 MB. Free memory was 117.8 MB in the beginning and 116.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:34,430 INFO L168 Benchmark]: RCFGBuilder took 388.18 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 99.1 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:34,431 INFO L168 Benchmark]: TraceAbstraction took 2228.34 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 98.7 MB in the beginning and 76.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 61.1 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:34,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 296.53 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.20 ms. Allocated memory is still 151.0 MB. Free memory was 117.8 MB in the beginning and 116.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 388.18 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 99.1 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2228.34 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 98.7 MB in the beginning and 76.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 61.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...