/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ms3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:47:07,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:47:07,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:47:07,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:47:07,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:47:07,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:47:07,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:47:07,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:47:07,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:47:07,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:47:07,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:47:07,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:47:07,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:47:07,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:47:07,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:47:07,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:47:07,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:47:07,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:47:07,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:47:07,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:47:07,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:47:07,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:47:07,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:47:07,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:47:07,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:47:07,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:47:07,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:47:07,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:47:07,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:47:07,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:47:07,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:47:07,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:47:07,191 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:47:07,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:47:07,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:47:07,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:47:07,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:47:07,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:47:07,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:47:07,194 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:47:07,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:47:07,194 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:47:07,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:47:07,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:47:07,195 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:47:07,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:47:07,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:47:07,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:47:07,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:47:07,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:47:07,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:47:07,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:47:07,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:47:07,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:47:07,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:47:07,712 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:47:07,713 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:47:07,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms3f.c [2021-02-23 18:47:07,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6e6b5b0/eb32dd29f92c40eca519bcb1817aa5ff/FLAG2803ef150 [2021-02-23 18:47:08,595 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:47:08,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms3f.c [2021-02-23 18:47:08,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6e6b5b0/eb32dd29f92c40eca519bcb1817aa5ff/FLAG2803ef150 [2021-02-23 18:47:08,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6e6b5b0/eb32dd29f92c40eca519bcb1817aa5ff [2021-02-23 18:47:08,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:47:08,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:47:08,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:08,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:47:08,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:47:08,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:08" (1/1) ... [2021-02-23 18:47:08,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cacbf99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:08, skipping insertion in model container [2021-02-23 18:47:08,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:08" (1/1) ... [2021-02-23 18:47:08,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:47:09,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:47:09,156 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/ms3f.c[587,600] [2021-02-23 18:47:09,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:09,190 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:47:09,207 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/ms3f.c[587,600] [2021-02-23 18:47:09,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:09,235 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:47:09,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:09 WrapperNode [2021-02-23 18:47:09,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:09,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:47:09,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:47:09,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:47:09,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:09" (1/1) ... [2021-02-23 18:47:09,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:09" (1/1) ... [2021-02-23 18:47:09,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:09" (1/1) ... [2021-02-23 18:47:09,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:09" (1/1) ... [2021-02-23 18:47:09,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:09" (1/1) ... [2021-02-23 18:47:09,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:09" (1/1) ... [2021-02-23 18:47:09,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:09" (1/1) ... [2021-02-23 18:47:09,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:47:09,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:47:09,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:47:09,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:47:09,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:09" (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 [2021-02-23 18:47:09,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:47:09,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:47:09,455 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:47:09,455 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:47:09,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:47:09,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:47:09,456 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:47:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:47:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:47:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:47:09,457 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:47:09,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:47:09,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:47:09,458 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:47:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:47:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:47:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:47:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:47:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:47:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:47:09,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:47:09,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:47:10,122 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:47:10,122 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 18:47:10,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:10 BoogieIcfgContainer [2021-02-23 18:47:10,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:47:10,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:47:10,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:47:10,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:47:10,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:47:08" (1/3) ... [2021-02-23 18:47:10,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d582e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:10, skipping insertion in model container [2021-02-23 18:47:10,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:09" (2/3) ... [2021-02-23 18:47:10,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d582e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:10, skipping insertion in model container [2021-02-23 18:47:10,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:10" (3/3) ... [2021-02-23 18:47:10,135 INFO L111 eAbstractionObserver]: Analyzing ICFG ms3f.c [2021-02-23 18:47:10,143 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:47:10,149 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:47:10,171 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:47:10,197 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:47:10,197 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:47:10,197 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:47:10,197 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:47:10,198 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:47:10,198 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:47:10,198 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:47:10,198 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:47:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2021-02-23 18:47:10,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 18:47:10,228 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:10,230 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] [2021-02-23 18:47:10,230 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:10,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:10,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1183518233, now seen corresponding path program 1 times [2021-02-23 18:47:10,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:10,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090228192] [2021-02-23 18:47:10,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:10,333 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:10,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:10,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:10,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:10,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:10,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:10,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:10,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:10,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-23 18:47:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:10,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:10,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:10,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090228192] [2021-02-23 18:47:10,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:10,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:47:10,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748185221] [2021-02-23 18:47:10,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:47:10,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:10,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:47:10,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:10,709 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2021-02-23 18:47:10,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:10,973 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2021-02-23 18:47:10,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:47:10,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-23 18:47:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:10,986 INFO L225 Difference]: With dead ends: 110 [2021-02-23 18:47:10,987 INFO L226 Difference]: Without dead ends: 57 [2021-02-23 18:47:10,991 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 [2021-02-23 18:47:11,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-23 18:47:11,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-23 18:47:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-23 18:47:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-02-23 18:47:11,049 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 42 [2021-02-23 18:47:11,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:11,050 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-02-23 18:47:11,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:47:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-02-23 18:47:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 18:47:11,053 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:11,053 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] [2021-02-23 18:47:11,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:47:11,054 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:11,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:11,055 INFO L82 PathProgramCache]: Analyzing trace with hash -232895933, now seen corresponding path program 1 times [2021-02-23 18:47:11,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:11,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453430873] [2021-02-23 18:47:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:11,059 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:11,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:11,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:11,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:11,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:47:11,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:11,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:47:11,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:11,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:11,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:11,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:11,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:11,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-23 18:47:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:11,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:11,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:11,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453430873] [2021-02-23 18:47:11,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:11,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:47:11,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130158912] [2021-02-23 18:47:11,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:47:11,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:11,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:47:11,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:47:11,315 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2021-02-23 18:47:11,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:11,579 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2021-02-23 18:47:11,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:47:11,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-23 18:47:11,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:11,581 INFO L225 Difference]: With dead ends: 83 [2021-02-23 18:47:11,582 INFO L226 Difference]: Without dead ends: 65 [2021-02-23 18:47:11,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:47:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-23 18:47:11,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2021-02-23 18:47:11,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-23 18:47:11,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-23 18:47:11,600 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 42 [2021-02-23 18:47:11,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:11,601 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-23 18:47:11,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:47:11,601 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-23 18:47:11,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 18:47:11,603 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:11,603 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] [2021-02-23 18:47:11,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:47:11,604 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:11,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:11,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1631302411, now seen corresponding path program 1 times [2021-02-23 18:47:11,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:11,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054676641] [2021-02-23 18:47:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:11,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:11,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:47:14,822 WARN L202 SmtUtils]: Spent 1.00 s on a formula simplification that was a NOOP. DAG size: 27 [2021-02-23 18:47:14,844 WARN L141 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-02-23 18:47:14,855 WARN L147 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size 32 [2021-02-23 18:47:14,856 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 18:47:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:14,951 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:15,054 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:15,119 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:47:15,120 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:47:15,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:47:15,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:47:15 BoogieIcfgContainer [2021-02-23 18:47:15,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:47:15,149 INFO L168 Benchmark]: Toolchain (without parser) took 6185.67 ms. Allocated memory is still 153.1 MB. Free memory was 129.4 MB in the beginning and 85.4 MB in the end (delta: 44.0 MB). Peak memory consumption was 45.3 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:15,150 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:47:15,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.58 ms. Allocated memory is still 153.1 MB. Free memory was 128.3 MB in the beginning and 118.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:15,156 INFO L168 Benchmark]: Boogie Preprocessor took 83.29 ms. Allocated memory is still 153.1 MB. Free memory was 118.4 MB in the beginning and 116.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:15,158 INFO L168 Benchmark]: RCFGBuilder took 802.47 ms. Allocated memory is still 153.1 MB. Free memory was 116.7 MB in the beginning and 128.7 MB in the end (delta: -12.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:15,165 INFO L168 Benchmark]: TraceAbstraction took 5021.04 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 85.4 MB in the end (delta: 42.8 MB). Peak memory consumption was 44.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:15,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.58 ms. Allocated memory is still 153.1 MB. Free memory was 128.3 MB in the beginning and 118.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 83.29 ms. Allocated memory is still 153.1 MB. Free memory was 118.4 MB in the beginning and 116.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 802.47 ms. Allocated memory is still 153.1 MB. Free memory was 116.7 MB in the beginning and 128.7 MB in the end (delta: -12.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5021.04 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 85.4 MB in the end (delta: 42.8 MB). Peak memory consumption was 44.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a 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] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i 2*N) [L15] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 62 SDslu, 37 SDs, 0 SdLazy, 134 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...