/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifcompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:01:41,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:01:41,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:01:41,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:01:41,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:01:41,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:01:41,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:01:41,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:01:41,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:01:41,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:01:41,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:01:41,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:01:41,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:01:41,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:01:41,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:01:41,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:01:41,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:01:41,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:01:41,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:01:41,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:01:41,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:01:41,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:01:41,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:01:41,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:01:41,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 22:01:41,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:01:41,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:01:41,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:01:41,455 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:01:41,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:01:41,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:01:41,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:01:41,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:01:41,480 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:01:41,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:01:41,480 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:01:41,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:01:41,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:01:41,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:01:41,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:01:41,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:01:41,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:01:41,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:01:41,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:01:41,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:01:41,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:01:41,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:01:41,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:01:41,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:01:41,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:01:41,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:01:41,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:01:41,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:01:41,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:01:41,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:01:41,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:01:41,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:01:41,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:01:41,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 22:01:41,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:01:41,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:01:41,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:01:41,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:01:41,840 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:01:41,842 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifcompf.c [2020-08-18 22:01:41,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b54e71070/c71199c21e474471b3bd7dc816c6f96a/FLAGea87409a2 [2020-08-18 22:01:42,394 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:01:42,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifcompf.c [2020-08-18 22:01:42,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b54e71070/c71199c21e474471b3bd7dc816c6f96a/FLAGea87409a2 [2020-08-18 22:01:42,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b54e71070/c71199c21e474471b3bd7dc816c6f96a [2020-08-18 22:01:42,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:01:42,800 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:01:42,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:01:42,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:01:42,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:01:42,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:01:42" (1/1) ... [2020-08-18 22:01:42,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@294a9e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:42, skipping insertion in model container [2020-08-18 22:01:42,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:01:42" (1/1) ... [2020-08-18 22:01:42,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:01:42,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:01:43,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:01:43,083 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:01:43,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:01:43,124 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:01:43,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43 WrapperNode [2020-08-18 22:01:43,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:01:43,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:01:43,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:01:43,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:01:43,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... [2020-08-18 22:01:43,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:01:43,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:01:43,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:01:43,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:01:43,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:01:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:01:43,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:01:43,329 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 22:01:43,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 22:01:43,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:01:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:01:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:01:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 22:01:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 22:01:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:01:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:01:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:01:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:01:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:01:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:01:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:01:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:01:43,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:01:43,659 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:01:43,660 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 22:01:43,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:01:43 BoogieIcfgContainer [2020-08-18 22:01:43,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:01:43,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:01:43,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:01:43,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:01:43,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:01:42" (1/3) ... [2020-08-18 22:01:43,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264eb4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:01:43, skipping insertion in model container [2020-08-18 22:01:43,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:01:43" (2/3) ... [2020-08-18 22:01:43,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264eb4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:01:43, skipping insertion in model container [2020-08-18 22:01:43,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:01:43" (3/3) ... [2020-08-18 22:01:43,683 INFO L109 eAbstractionObserver]: Analyzing ICFG ifcompf.c [2020-08-18 22:01:43,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:01:43,708 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:01:43,732 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:01:43,780 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:01:43,780 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:01:43,781 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:01:43,782 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:01:43,782 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:01:43,783 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:01:43,783 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:01:43,783 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:01:43,813 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-18 22:01:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 22:01:43,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:01:43,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:01:43,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:01:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:01:43,844 INFO L82 PathProgramCache]: Analyzing trace with hash -794599326, now seen corresponding path program 1 times [2020-08-18 22:01:43,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:01:43,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838216127] [2020-08-18 22:01:43,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:01:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:44,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:01:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:44,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:01:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:01:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:01:44,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838216127] [2020-08-18 22:01:44,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:01:44,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:01:44,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404788149] [2020-08-18 22:01:44,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:01:44,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:01:44,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:01:44,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:01:44,092 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-18 22:01:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:01:44,226 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2020-08-18 22:01:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:01:44,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-18 22:01:44,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:01:44,237 INFO L225 Difference]: With dead ends: 70 [2020-08-18 22:01:44,237 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 22:01:44,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:01:44,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 22:01:44,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-18 22:01:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-18 22:01:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-08-18 22:01:44,283 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 24 [2020-08-18 22:01:44,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:01:44,283 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-08-18 22:01:44,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:01:44,284 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-08-18 22:01:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 22:01:44,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:01:44,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:01:44,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:01:44,286 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:01:44,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:01:44,286 INFO L82 PathProgramCache]: Analyzing trace with hash -544938994, now seen corresponding path program 1 times [2020-08-18 22:01:44,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:01:44,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678088847] [2020-08-18 22:01:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:01:44,314 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 22:01:44,314 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 22:01:44,315 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:01:44,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:01:44,337 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 22:01:44,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:01:44 BoogieIcfgContainer [2020-08-18 22:01:44,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:01:44,341 INFO L168 Benchmark]: Toolchain (without parser) took 1540.44 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.0 MB in the beginning and 124.9 MB in the end (delta: -22.9 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:44,342 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-18 22:01:44,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.92 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 91.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:44,345 INFO L168 Benchmark]: Boogie Preprocessor took 128.09 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.2 MB in the beginning and 178.2 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:44,345 INFO L168 Benchmark]: RCFGBuilder took 419.67 ms. Allocated memory is still 201.3 MB. Free memory was 178.2 MB in the beginning and 158.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:44,346 INFO L168 Benchmark]: TraceAbstraction took 662.82 ms. Allocated memory is still 201.3 MB. Free memory was 158.8 MB in the beginning and 124.9 MB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:01:44,351 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 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.92 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 91.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.09 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.2 MB in the beginning and 178.2 MB in the end (delta: -87.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.67 ms. Allocated memory is still 201.3 MB. Free memory was 178.2 MB in the beginning and 158.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 662.82 ms. Allocated memory is still 201.3 MB. Free memory was 158.8 MB in the beginning and 124.9 MB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND FALSE !(i