/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/array-fpi/sina3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:24:04,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:24:04,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:24:04,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:24:05,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:24:05,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:24:05,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:24:05,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:24:05,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:24:05,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:24:05,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:24:05,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:24:05,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:24:05,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:24:05,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:24:05,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:24:05,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:24:05,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:24:05,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:24:05,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:24:05,083 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 02:24:05,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:24:05,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:24:05,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:24:05,112 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:24:05,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:24:05,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:24:05,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:24:05,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:24:05,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:24:05,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:24:05,115 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:24:05,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:24:05,115 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:24:05,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:24:05,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:24:05,116 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:24:05,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:24:05,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:24:05,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:24:05,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:24:05,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:24:05,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:24:05,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:24:05,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:24:05,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:24:05,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:24:05,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:24:05,612 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:24:05,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina3f.c [2020-10-24 02:24:05,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b391f30bd/3c321cec7a7243a794980ed76bcd7ba9/FLAG83c38ee38 [2020-10-24 02:24:06,347 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:24:06,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina3f.c [2020-10-24 02:24:06,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b391f30bd/3c321cec7a7243a794980ed76bcd7ba9/FLAG83c38ee38 [2020-10-24 02:24:06,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b391f30bd/3c321cec7a7243a794980ed76bcd7ba9 [2020-10-24 02:24:06,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:24:06,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:24:06,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:24:06,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:24:06,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:24:06,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:06" (1/1) ... [2020-10-24 02:24:06,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da74b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:06, skipping insertion in model container [2020-10-24 02:24:06,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:06" (1/1) ... [2020-10-24 02:24:06,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:24:06,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:24:06,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:24:06,970 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:24:06,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:24:07,018 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:24:07,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:07 WrapperNode [2020-10-24 02:24:07,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:24:07,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:24:07,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:24:07,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:24:07,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:07" (1/1) ... [2020-10-24 02:24:07,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:07" (1/1) ... [2020-10-24 02:24:07,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:07" (1/1) ... [2020-10-24 02:24:07,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:07" (1/1) ... [2020-10-24 02:24:07,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:07" (1/1) ... [2020-10-24 02:24:07,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:07" (1/1) ... [2020-10-24 02:24:07,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:07" (1/1) ... [2020-10-24 02:24:07,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:24:07,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:24:07,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:24:07,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:24:07,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:07" (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 02:24:07,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:24:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:24:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:24:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:24:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:24:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:24:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:24:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:24:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:24:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:24:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:24:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:24:07,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:24:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-24 02:24:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:24:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-24 02:24:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:24:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:24:07,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:24:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:24:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:24:07,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:24:07,678 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:24:07,678 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-24 02:24:07,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:07 BoogieIcfgContainer [2020-10-24 02:24:07,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:24:07,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:24:07,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:24:07,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:24:07,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:24:06" (1/3) ... [2020-10-24 02:24:07,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14372fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:07, skipping insertion in model container [2020-10-24 02:24:07,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:07" (2/3) ... [2020-10-24 02:24:07,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14372fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:07, skipping insertion in model container [2020-10-24 02:24:07,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:07" (3/3) ... [2020-10-24 02:24:07,691 INFO L111 eAbstractionObserver]: Analyzing ICFG sina3f.c [2020-10-24 02:24:07,704 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:24:07,710 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:24:07,728 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:24:07,756 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:24:07,756 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:24:07,757 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:24:07,757 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:24:07,757 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:24:07,757 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:24:07,757 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:24:07,757 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:24:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-10-24 02:24:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-24 02:24:07,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:24:07,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:24:07,790 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:24:07,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:24:07,798 INFO L82 PathProgramCache]: Analyzing trace with hash 627695450, now seen corresponding path program 1 times [2020-10-24 02:24:07,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:24:07,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084947395] [2020-10-24 02:24:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:24:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:08,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:24:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:08,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-24 02:24:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:08,174 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 02:24:08,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084947395] [2020-10-24 02:24:08,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:24:08,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 02:24:08,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454807284] [2020-10-24 02:24:08,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 02:24:08,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:24:08,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 02:24:08,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:24:08,202 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-10-24 02:24:08,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:24:08,446 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2020-10-24 02:24:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 02:24:08,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-10-24 02:24:08,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:24:08,460 INFO L225 Difference]: With dead ends: 151 [2020-10-24 02:24:08,460 INFO L226 Difference]: Without dead ends: 76 [2020-10-24 02:24:08,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:24:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-24 02:24:08,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-24 02:24:08,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-24 02:24:08,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-24 02:24:08,525 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 45 [2020-10-24 02:24:08,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:24:08,526 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-24 02:24:08,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 02:24:08,526 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-24 02:24:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-24 02:24:08,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:24:08,529 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 02:24:08,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:24:08,530 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:24:08,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:24:08,531 INFO L82 PathProgramCache]: Analyzing trace with hash 240330880, now seen corresponding path program 1 times [2020-10-24 02:24:08,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:24:08,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112500042] [2020-10-24 02:24:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:24:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:08,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:24:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:08,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-24 02:24:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:08,711 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 02:24:08,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112500042] [2020-10-24 02:24:08,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:24:08,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 02:24:08,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189121895] [2020-10-24 02:24:08,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:24:08,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:24:08,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:24:08,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:24:08,716 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 5 states. [2020-10-24 02:24:09,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:24:09,022 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2020-10-24 02:24:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:24:09,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-10-24 02:24:09,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:24:09,027 INFO L225 Difference]: With dead ends: 147 [2020-10-24 02:24:09,028 INFO L226 Difference]: Without dead ends: 106 [2020-10-24 02:24:09,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:24:09,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-24 02:24:09,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 80. [2020-10-24 02:24:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-24 02:24:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-24 02:24:09,051 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 45 [2020-10-24 02:24:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:24:09,051 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-24 02:24:09,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:24:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-24 02:24:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-24 02:24:09,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:24:09,054 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, 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 02:24:09,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:24:09,054 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:24:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:24:09,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1016562738, now seen corresponding path program 1 times [2020-10-24 02:24:09,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:24:09,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679542490] [2020-10-24 02:24:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:24:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 02:24:09,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 02:24:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 02:24:09,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 02:24:09,241 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 02:24:09,241 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 02:24:09,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:24:09,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:24:09 BoogieIcfgContainer [2020-10-24 02:24:09,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:24:09,352 INFO L168 Benchmark]: Toolchain (without parser) took 2629.75 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 70.4 MB in the end (delta: 56.8 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:09,352 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 126.3 MB in the end (delta: 79.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:24:09,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.36 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 116.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:09,361 INFO L168 Benchmark]: Boogie Preprocessor took 48.17 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:09,362 INFO L168 Benchmark]: RCFGBuilder took 611.26 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 123.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:09,363 INFO L168 Benchmark]: TraceAbstraction took 1663.50 ms. Allocated memory is still 151.0 MB. Free memory was 122.7 MB in the beginning and 70.4 MB in the end (delta: 52.3 MB). Peak memory consumption was 53.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:09,367 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 126.3 MB in the end (delta: 79.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 293.36 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 116.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.17 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 611.26 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 123.2 MB in the end (delta: -8.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1663.50 ms. Allocated memory is still 151.0 MB. Free memory was 122.7 MB in the beginning and 70.4 MB in the end (delta: 52.3 MB). Peak memory consumption was 53.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; VAL [\old(N)=0, N=1] [L28] long long sum[1]; VAL [\old(N)=0, N=1, sum={13:0}] [L29] long long *a = malloc(sizeof(long long)*N); VAL [\old(N)=0, a={-2:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={13:0}] [L30] int *b = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-2:0}, b={11:0}, malloc(sizeof(int)*N)={11:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={13:0}] [L32] sum[0] = 1 VAL [\old(N)=0, a={-2:0}, b={11:0}, malloc(sizeof(int)*N)={11:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={13:0}] [L33] i=0 VAL [\old(N)=0, a={-2:0}, b={11:0}, i=0, malloc(sizeof(int)*N)={11:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={13:0}] [L33] COND TRUE i