/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/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:15:54,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:15:54,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:15:54,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:15:54,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:15:54,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:15:54,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:15:54,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:15:54,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:15:54,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:15:54,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:15:54,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:15:54,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:15:54,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:15:54,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:15:54,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:15:54,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:15:54,885 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:15:54,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:15:54,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:15:54,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:15:54,901 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:15:54,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:15:54,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:15:54,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:15:54,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:15:54,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:15:54,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:15:54,902 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:15:54,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:15:54,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:15:54,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:15:54,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:15:54,903 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:15:54,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:15:54,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:15:54,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:15:54,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:15:54,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:15:54,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:15:54,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:15:55,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:15:55,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:15:55,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:15:55,436 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:15:55,436 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:15:55,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2021-02-24 00:15:55,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626c8137e/5d4f360c87c74becadb23a183841d2ef/FLAG742705274 [2021-02-24 00:15:56,193 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:15:56,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modsf.c [2021-02-24 00:15:56,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626c8137e/5d4f360c87c74becadb23a183841d2ef/FLAG742705274 [2021-02-24 00:15:56,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626c8137e/5d4f360c87c74becadb23a183841d2ef [2021-02-24 00:15:56,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:15:56,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:15:56,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:56,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:15:56,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:15:56,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee56dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56, skipping insertion in model container [2021-02-24 00:15:56,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:15:56,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:15:56,751 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modsf.c[588,601] [2021-02-24 00:15:56,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:56,791 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:15:56,807 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modsf.c[588,601] [2021-02-24 00:15:56,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:56,839 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:15:56,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56 WrapperNode [2021-02-24 00:15:56,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:56,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:15:56,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:15:56,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:15:56,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:15:56,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:15:56,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:15:56,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:15:56,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (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 [2021-02-24 00:15:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:15:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:15:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:15:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:15:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:15:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:15:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:15:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:15:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:15:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:15:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:15:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:15:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:15:57,024 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:15:57,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:15:57,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:15:57,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:15:57,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:15:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:15:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:15:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:15:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:15:57,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:15:57,719 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 00:15:57,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:57 BoogieIcfgContainer [2021-02-24 00:15:57,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:15:57,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:15:57,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:15:57,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:15:57,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:15:56" (1/3) ... [2021-02-24 00:15:57,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563fb2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:57, skipping insertion in model container [2021-02-24 00:15:57,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (2/3) ... [2021-02-24 00:15:57,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563fb2a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:57, skipping insertion in model container [2021-02-24 00:15:57,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:57" (3/3) ... [2021-02-24 00:15:57,734 INFO L111 eAbstractionObserver]: Analyzing ICFG modsf.c [2021-02-24 00:15:57,742 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:15:57,748 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:15:57,772 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:15:57,807 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:15:57,807 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:15:57,807 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:15:57,808 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:15:57,808 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:15:57,808 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:15:57,808 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:15:57,808 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:15:57,831 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2021-02-24 00:15:57,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 00:15:57,846 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:57,847 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] [2021-02-24 00:15:57,847 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:57,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:57,854 INFO L82 PathProgramCache]: Analyzing trace with hash 455365332, now seen corresponding path program 1 times [2021-02-24 00:15:57,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:57,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173486208] [2021-02-24 00:15:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:58,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:58,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:58,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:58,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:58,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:58,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:58,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:58,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:58,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:15:58,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173486208] [2021-02-24 00:15:58,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:58,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:15:58,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419288588] [2021-02-24 00:15:58,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:15:58,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:58,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:15:58,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:15:58,258 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2021-02-24 00:15:58,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:58,642 INFO L93 Difference]: Finished difference Result 151 states and 174 transitions. [2021-02-24 00:15:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:15:58,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-24 00:15:58,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:58,661 INFO L225 Difference]: With dead ends: 151 [2021-02-24 00:15:58,661 INFO L226 Difference]: Without dead ends: 77 [2021-02-24 00:15:58,668 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 [2021-02-24 00:15:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-24 00:15:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-02-24 00:15:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-24 00:15:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2021-02-24 00:15:58,738 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 42 [2021-02-24 00:15:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:58,738 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2021-02-24 00:15:58,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:15:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2021-02-24 00:15:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 00:15:58,754 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:58,755 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] [2021-02-24 00:15:58,755 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:15:58,755 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:58,756 INFO L82 PathProgramCache]: Analyzing trace with hash 2083403351, now seen corresponding path program 1 times [2021-02-24 00:15:58,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:58,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705798667] [2021-02-24 00:15:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:58,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:58,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:58,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:58,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:15:58,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:58,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:15:58,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:58,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:58,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:58,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:58,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:58,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:58,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:58,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:15:59,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705798667] [2021-02-24 00:15:59,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:59,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:15:59,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49024694] [2021-02-24 00:15:59,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:15:59,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:59,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:15:59,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:15:59,008 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 5 states. [2021-02-24 00:15:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:59,548 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2021-02-24 00:15:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:15:59,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-24 00:15:59,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:59,553 INFO L225 Difference]: With dead ends: 155 [2021-02-24 00:15:59,554 INFO L226 Difference]: Without dead ends: 111 [2021-02-24 00:15:59,555 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 [2021-02-24 00:15:59,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-24 00:15:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 81. [2021-02-24 00:15:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-24 00:15:59,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-02-24 00:15:59,581 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 42 [2021-02-24 00:15:59,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:59,581 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-02-24 00:15:59,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:15:59,581 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-02-24 00:15:59,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-24 00:15:59,584 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:59,584 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, 1] [2021-02-24 00:15:59,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:15:59,585 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:59,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:59,586 INFO L82 PathProgramCache]: Analyzing trace with hash -556502197, now seen corresponding path program 1 times [2021-02-24 00:15:59,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:59,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933850117] [2021-02-24 00:15:59,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:59,630 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-24 00:15:59,631 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 00:15:59,631 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:15:59,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:15:59,669 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 00:15:59,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:15:59 BoogieIcfgContainer [2021-02-24 00:15:59,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:15:59,672 INFO L168 Benchmark]: Toolchain (without parser) took 3136.15 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.6 MB in the beginning and 106.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 52.8 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:59,673 INFO L168 Benchmark]: CDTParser took 1.16 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 124.3 MB in the end (delta: 424.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:15:59,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:59,675 INFO L168 Benchmark]: Boogie Preprocessor took 51.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:59,676 INFO L168 Benchmark]: RCFGBuilder took 828.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 127.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:59,677 INFO L168 Benchmark]: TraceAbstraction took 1944.06 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.1 MB in the beginning and 106.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 52.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:59,680 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 124.3 MB in the end (delta: 424.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 292.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.70 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 828.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 127.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1944.06 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.1 MB in the beginning and 106.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 52.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i