/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.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/n.c40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:01:16,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:01:16,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:01:16,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 23:01:16,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:01:16,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:01:16,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:01:16,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:01:16,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:01:16,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:01:16,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:01:16,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:01:16,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:01:16,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:01:16,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:01:16,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:01:16,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:01:16,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:01:16,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:01:16,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:01:16,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:01:16,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:01:16,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:01:16,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:01:16,878 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:01:16,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:01:16,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:01:16,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:01:16,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:01:16,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:01:16,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:01:16,880 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:01:16,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:01:16,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:01:16,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:01:16,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:01:16,881 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:01:16,882 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:01:16,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:01:16,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:01:16,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:01:16,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:01:16,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:01:16,883 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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 [2020-08-22 23:01:17,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:01:17,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:01:17,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:01:17,191 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:01:17,192 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:01:17,192 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c40.c [2020-08-22 23:01:17,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d856fcd09/4fe8e7a45e3f4488a375966e1270d491/FLAG219df2e51 [2020-08-22 23:01:17,766 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:01:17,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40.c [2020-08-22 23:01:17,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d856fcd09/4fe8e7a45e3f4488a375966e1270d491/FLAG219df2e51 [2020-08-22 23:01:18,098 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d856fcd09/4fe8e7a45e3f4488a375966e1270d491 [2020-08-22 23:01:18,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:01:18,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:01:18,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:01:18,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:01:18,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:01:18,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:01:18" (1/1) ... [2020-08-22 23:01:18,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10995e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:18, skipping insertion in model container [2020-08-22 23:01:18,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:01:18" (1/1) ... [2020-08-22 23:01:18,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:01:18,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:01:18,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:01:18,332 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:01:18,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:01:18,376 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:01:18,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:18 WrapperNode [2020-08-22 23:01:18,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:01:18,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:01:18,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:01:18,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:01:18,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:18" (1/1) ... [2020-08-22 23:01:18,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:18" (1/1) ... [2020-08-22 23:01:18,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:18" (1/1) ... [2020-08-22 23:01:18,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:18" (1/1) ... [2020-08-22 23:01:18,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:18" (1/1) ... [2020-08-22 23:01:18,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:18" (1/1) ... [2020-08-22 23:01:18,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:18" (1/1) ... [2020-08-22 23:01:18,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:01:18,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:01:18,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:01:18,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:01:18,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:18" (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 [2020-08-22 23:01:18,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:01:18,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:01:18,572 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:01:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:01:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:01:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:01:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 23:01:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 23:01:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:01:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 23:01:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:01:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 23:01:18,874 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:01:18,874 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 23:01:18,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:01:18 BoogieIcfgContainer [2020-08-22 23:01:18,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:01:18,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:01:18,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:01:18,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:01:18,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:01:18" (1/3) ... [2020-08-22 23:01:18,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5575ff5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:01:18, skipping insertion in model container [2020-08-22 23:01:18,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:18" (2/3) ... [2020-08-22 23:01:18,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5575ff5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:01:18, skipping insertion in model container [2020-08-22 23:01:18,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:01:18" (3/3) ... [2020-08-22 23:01:18,888 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c40.c [2020-08-22 23:01:18,900 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:01:18,909 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:01:18,924 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:01:18,946 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:01:18,946 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:01:18,946 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:01:18,946 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:01:18,946 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:01:18,947 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:01:18,947 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:01:18,947 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:01:18,961 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-08-22 23:01:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 23:01:18,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:18,972 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] [2020-08-22 23:01:18,973 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:18,979 INFO L82 PathProgramCache]: Analyzing trace with hash 814682400, now seen corresponding path program 1 times [2020-08-22 23:01:18,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:18,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527303014] [2020-08-22 23:01:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:19,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:19,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527303014] [2020-08-22 23:01:19,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:19,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 23:01:19,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462724712] [2020-08-22 23:01:19,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 23:01:19,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:19,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 23:01:19,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:01:19,353 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-08-22 23:01:19,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:19,480 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-08-22 23:01:19,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 23:01:19,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-22 23:01:19,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:19,494 INFO L225 Difference]: With dead ends: 54 [2020-08-22 23:01:19,495 INFO L226 Difference]: Without dead ends: 35 [2020-08-22 23:01:19,500 INFO L675 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 [2020-08-22 23:01:19,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-22 23:01:19,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-22 23:01:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 23:01:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-08-22 23:01:19,541 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 25 [2020-08-22 23:01:19,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:19,542 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-08-22 23:01:19,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 23:01:19,542 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-08-22 23:01:19,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 23:01:19,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:19,544 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] [2020-08-22 23:01:19,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:01:19,544 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:19,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:19,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1790244750, now seen corresponding path program 1 times [2020-08-22 23:01:19,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:19,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602967222] [2020-08-22 23:01:19,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:19,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:19,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602967222] [2020-08-22 23:01:19,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:19,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 23:01:19,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316989393] [2020-08-22 23:01:19,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 23:01:19,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:19,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 23:01:19,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 23:01:19,686 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 4 states. [2020-08-22 23:01:19,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:19,830 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-08-22 23:01:19,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 23:01:19,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-08-22 23:01:19,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:19,833 INFO L225 Difference]: With dead ends: 51 [2020-08-22 23:01:19,833 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 23:01:19,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:01:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 23:01:19,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-08-22 23:01:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-22 23:01:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-08-22 23:01:19,846 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 27 [2020-08-22 23:01:19,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:19,847 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-08-22 23:01:19,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 23:01:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-08-22 23:01:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 23:01:19,849 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:01:19,849 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] [2020-08-22 23:01:19,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:01:19,850 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:01:19,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:01:19,851 INFO L82 PathProgramCache]: Analyzing trace with hash -189710638, now seen corresponding path program 1 times [2020-08-22 23:01:19,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:01:19,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807642832] [2020-08-22 23:01:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:01:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:20,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:01:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:01:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:01:20,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807642832] [2020-08-22 23:01:20,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:01:20,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:01:20,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751776448] [2020-08-22 23:01:20,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:01:20,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:01:20,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:01:20,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:01:20,103 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 5 states. [2020-08-22 23:01:20,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:01:20,203 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-08-22 23:01:20,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:01:20,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-08-22 23:01:20,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:01:20,204 INFO L225 Difference]: With dead ends: 37 [2020-08-22 23:01:20,204 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 23:01:20,205 INFO L675 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 [2020-08-22 23:01:20,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 23:01:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 23:01:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 23:01:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 23:01:20,206 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-08-22 23:01:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:01:20,206 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 23:01:20,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:01:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 23:01:20,207 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 23:01:20,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:01:20,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 23:01:20,537 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 23:01:20,537 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-08-22 23:01:20,538 INFO L264 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)) [2020-08-22 23:01:20,538 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~j~0 |old(~j~0)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |~#y~0.offset| |old(~#y~0.offset)|) (= ~i~0 |old(~i~0)|) (= |old(#length)| |#length|) (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |~#y~0.base| |old(~#y~0.base)|)) [2020-08-22 23:01:20,538 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) [2020-08-22 23:01:20,538 INFO L271 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: true [2020-08-22 23:01:20,539 INFO L264 CegarLoopResult]: At program point L6-1(line 6) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= ~i~0 0)) [2020-08-22 23:01:20,539 INFO L271 CegarLoopResult]: At program point L5-1(line 5) the Hoare annotation is: true [2020-08-22 23:01:20,539 INFO L264 CegarLoopResult]: At program point L6-2(line 6) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= ~i~0 0)) [2020-08-22 23:01:20,539 INFO L264 CegarLoopResult]: At program point L5-2(line 5) the Hoare annotation is: (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) [2020-08-22 23:01:20,539 INFO L264 CegarLoopResult]: At program point L5-3(line 5) the Hoare annotation is: (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) [2020-08-22 23:01:20,540 INFO L264 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)) [2020-08-22 23:01:20,540 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:01:20,540 INFO L264 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)) [2020-08-22 23:01:20,540 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 23:01:20,540 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:01:20,541 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 8 23) the Hoare annotation is: true [2020-08-22 23:01:20,541 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-08-22 23:01:20,541 INFO L264 CegarLoopResult]: At program point L19-1(lines 19 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|)))) [2020-08-22 23:01:20,541 INFO L264 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-08-22 23:01:20,541 INFO L271 CegarLoopResult]: At program point L19-4(line 19) the Hoare annotation is: true [2020-08-22 23:01:20,542 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-08-22 23:01:20,542 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 8 23) the Hoare annotation is: true [2020-08-22 23:01:20,542 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-08-22 23:01:20,542 INFO L264 CegarLoopResult]: At program point L11(line 11) 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)))) [2020-08-22 23:01:20,542 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-08-22 23:01:20,543 INFO L264 CegarLoopResult]: At program point L9(line 9) 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|)))) [2020-08-22 23:01:20,543 INFO L264 CegarLoopResult]: At program point L9-1(line 9) 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)))) [2020-08-22 23:01:20,543 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(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|)))) [2020-08-22 23:01:20,543 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 8 23) 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|)))) [2020-08-22 23:01:20,544 INFO L264 CegarLoopResult]: At program point L20(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|)))) [2020-08-22 23:01:20,544 INFO L271 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: true [2020-08-22 23:01:20,544 INFO L264 CegarLoopResult]: At program point L16(lines 8 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|)))) [2020-08-22 23:01:20,544 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-08-22 23:01:20,545 INFO L264 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-08-22 23:01:20,545 INFO L264 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-08-22 23:01:20,545 INFO L264 CegarLoopResult]: At program point L12-1(lines 12 15) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= |main_#t~mem1| 0) (= ~i~0 0)) (not (= |old(~i~0)| 0)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))))) [2020-08-22 23:01:20,545 INFO L264 CegarLoopResult]: At program point L12-2(line 12) 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|)))) [2020-08-22 23:01:20,546 INFO L264 CegarLoopResult]: At program point L12-4(line 12) the Hoare annotation is: (or (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2020-08-22 23:01:20,546 INFO L264 CegarLoopResult]: At program point L12-5(lines 12 15) 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)))) [2020-08-22 23:01:20,546 INFO L264 CegarLoopResult]: At program point L12-6(lines 12 15) 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|)))) [2020-08-22 23:01:20,557 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:693) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-22 23:01:20,562 INFO L168 Benchmark]: Toolchain (without parser) took 2450.49 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 102.8 MB in the beginning and 138.5 MB in the end (delta: -35.7 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:20,563 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:01:20,564 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.16 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:20,565 INFO L168 Benchmark]: Boogie Preprocessor took 134.82 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 180.9 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:20,566 INFO L168 Benchmark]: RCFGBuilder took 366.59 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 165.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:20,567 INFO L168 Benchmark]: TraceAbstraction took 1678.16 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 165.0 MB in the beginning and 138.5 MB in the end (delta: 26.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. [2020-08-22 23:01:20,572 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.16 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.82 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 180.9 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.59 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 165.0 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1678.16 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 165.0 MB in the beginning and 138.5 MB in the end (delta: 26.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: 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...