/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ss1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:37,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:37,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:37,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:20:37,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:37,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:37,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:37,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:37,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:37,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:37,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:37,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:37,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:37,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:37,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:37,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:37,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:20:37,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:20:37,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:20:37,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:20:37,188 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:20:37,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:37,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:37,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:37,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:37,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:37,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:37,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:37,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:37,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:37,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:37,220 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:37,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:37,221 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:37,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:37,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:37,222 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:37,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:37,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:37,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:37,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:37,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:37,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:37,224 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:37,224 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:20:37,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:20:37,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:20:37,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:20:37,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:20:37,693 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:20:37,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss1f.c [2021-02-22 02:20:37,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63ad954f5/f78e0e4f35b84c3e870fd23d3ce2675e/FLAG30f28c3ad [2021-02-22 02:20:38,468 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:20:38,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss1f.c [2021-02-22 02:20:38,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63ad954f5/f78e0e4f35b84c3e870fd23d3ce2675e/FLAG30f28c3ad [2021-02-22 02:20:38,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63ad954f5/f78e0e4f35b84c3e870fd23d3ce2675e [2021-02-22 02:20:38,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:20:38,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:20:38,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:38,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:20:38,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:20:38,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:38" (1/1) ... [2021-02-22 02:20:38,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c3aaab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:38, skipping insertion in model container [2021-02-22 02:20:38,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:38" (1/1) ... [2021-02-22 02:20:38,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:20:38,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:20:39,064 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/ss1f.c[587,600] [2021-02-22 02:20:39,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:39,096 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:20:39,113 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/ss1f.c[587,600] [2021-02-22 02:20:39,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:39,142 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:20:39,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:39 WrapperNode [2021-02-22 02:20:39,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:39,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:20:39,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:20:39,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:20:39,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:39" (1/1) ... [2021-02-22 02:20:39,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:39" (1/1) ... [2021-02-22 02:20:39,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:39" (1/1) ... [2021-02-22 02:20:39,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:39" (1/1) ... [2021-02-22 02:20:39,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:39" (1/1) ... [2021-02-22 02:20:39,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:39" (1/1) ... [2021-02-22 02:20:39,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:39" (1/1) ... [2021-02-22 02:20:39,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:20:39,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:20:39,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:20:39,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:20:39,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:39" (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 [2021-02-22 02:20:39,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:20:39,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:20:39,316 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:20:39,316 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:20:39,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:20:39,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:20:39,317 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:20:39,317 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:20:39,317 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:20:39,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:20:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:20:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:20:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:20:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:20:39,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:20:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:20:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:20:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:20:39,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:20:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:20:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:20:39,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:20:40,015 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:20:40,015 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-22 02:20:40,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:40 BoogieIcfgContainer [2021-02-22 02:20:40,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:20:40,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:20:40,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:20:40,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:20:40,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:20:38" (1/3) ... [2021-02-22 02:20:40,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5bcded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:40, skipping insertion in model container [2021-02-22 02:20:40,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:39" (2/3) ... [2021-02-22 02:20:40,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5bcded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:40, skipping insertion in model container [2021-02-22 02:20:40,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:40" (3/3) ... [2021-02-22 02:20:40,028 INFO L111 eAbstractionObserver]: Analyzing ICFG ss1f.c [2021-02-22 02:20:40,035 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:20:40,041 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:20:40,062 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:20:40,089 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:20:40,090 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:20:40,090 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:20:40,090 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:20:40,090 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:20:40,091 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:20:40,091 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:20:40,091 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:20:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2021-02-22 02:20:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-22 02:20:40,121 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:40,122 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] [2021-02-22 02:20:40,122 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:40,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:40,130 INFO L82 PathProgramCache]: Analyzing trace with hash 277896157, now seen corresponding path program 1 times [2021-02-22 02:20:40,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:40,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659309202] [2021-02-22 02:20:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:40,229 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:40,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:40,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:40,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:40,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:40,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:40,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-22 02:20:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:40,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:40,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:40,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659309202] [2021-02-22 02:20:40,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:40,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:20:40,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462738363] [2021-02-22 02:20:40,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:20:40,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:40,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:20:40,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:40,540 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 3 states. [2021-02-22 02:20:40,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:40,890 INFO L93 Difference]: Finished difference Result 148 states and 167 transitions. [2021-02-22 02:20:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:20:40,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2021-02-22 02:20:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:40,902 INFO L225 Difference]: With dead ends: 148 [2021-02-22 02:20:40,902 INFO L226 Difference]: Without dead ends: 76 [2021-02-22 02:20:40,906 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 [2021-02-22 02:20:40,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-22 02:20:40,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-02-22 02:20:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-22 02:20:40,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-02-22 02:20:40,965 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 47 [2021-02-22 02:20:40,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:40,965 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-02-22 02:20:40,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:20:40,966 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-02-22 02:20:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-22 02:20:40,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:40,968 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] [2021-02-22 02:20:40,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:20:40,969 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:40,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:40,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1857242144, now seen corresponding path program 1 times [2021-02-22 02:20:40,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:40,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108440415] [2021-02-22 02:20:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:40,974 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:41,003 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-22 02:20:41,003 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:20:41,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:20:41,026 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-22 02:20:41,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:20:41 BoogieIcfgContainer [2021-02-22 02:20:41,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:20:41,029 INFO L168 Benchmark]: Toolchain (without parser) took 2206.47 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 72.3 MB in the end (delta: 55.0 MB). Peak memory consumption was 54.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:41,030 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:41,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.29 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:41,036 INFO L168 Benchmark]: Boogie Preprocessor took 50.48 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:41,037 INFO L168 Benchmark]: RCFGBuilder took 822.49 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 126.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:41,038 INFO L168 Benchmark]: TraceAbstraction took 1007.38 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 72.3 MB in the end (delta: 54.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:41,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 310.29 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.48 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 822.49 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 126.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1007.38 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 72.3 MB in the end (delta: 54.0 MB). Peak memory consumption was 54.5 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 FALSE !(i