/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/condmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:16:15,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:16:15,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:16:15,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:16:15,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:16:15,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:16:15,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:16:15,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:16:15,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:16:15,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:16:15,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:16:15,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:16:15,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:16:15,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:16:15,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:16:15,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:16:15,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:16:15,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:16:15,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:16:15,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:16:15,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:16:15,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:16:15,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:16:15,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:16:15,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:16:15,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:16:15,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:16:15,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:16:15,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:16:15,503 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:16:15,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:16:15,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:16:15,507 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:16:15,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:16:15,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:16:15,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:16:15,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:16:15,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:16:15,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:16:15,510 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:16:15,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:16:15,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:16:15,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:16:15,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:16:15,512 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:16:15,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:16:15,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:16:15,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:15,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:16:15,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:16:15,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:16:15,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:16:15,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:16:16,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:16:16,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:16:16,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:16:16,021 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:16:16,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c [2021-02-21 21:16:16,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4445ca19f/eff17f55056d4621a55ced2007166b76/FLAG52449b6f6 [2021-02-21 21:16:16,773 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:16:16,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c [2021-02-21 21:16:16,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4445ca19f/eff17f55056d4621a55ced2007166b76/FLAG52449b6f6 [2021-02-21 21:16:17,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4445ca19f/eff17f55056d4621a55ced2007166b76 [2021-02-21 21:16:17,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:16:17,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:16:17,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:17,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:16:17,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:16:17,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118a730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17, skipping insertion in model container [2021-02-21 21:16:17,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:16:17,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:16:17,355 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/condmf.c[589,602] [2021-02-21 21:16:17,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:17,385 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:16:17,398 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/condmf.c[589,602] [2021-02-21 21:16:17,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:17,424 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:16:17,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17 WrapperNode [2021-02-21 21:16:17,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:17,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:16:17,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:16:17,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:16:17,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:16:17,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:16:17,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:16:17,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:16:17,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (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 [2021-02-21 21:16:17,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:16:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:16:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:16:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:16:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:16:17,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:16:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:16:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:16:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:16:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:16:17,570 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:16:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:16:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:16:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:16:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:16:17,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:16:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:16:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:16:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:16:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:16:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:16:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:16:17,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:16:17,913 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 21:16:17,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:17 BoogieIcfgContainer [2021-02-21 21:16:17,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:16:17,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:16:17,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:16:17,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:16:17,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:16:17" (1/3) ... [2021-02-21 21:16:17,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b22772e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:17, skipping insertion in model container [2021-02-21 21:16:17,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (2/3) ... [2021-02-21 21:16:17,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b22772e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:17, skipping insertion in model container [2021-02-21 21:16:17,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:17" (3/3) ... [2021-02-21 21:16:17,953 INFO L111 eAbstractionObserver]: Analyzing ICFG condmf.c [2021-02-21 21:16:17,963 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:16:17,969 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:16:17,995 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:16:18,026 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:16:18,026 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:16:18,026 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:16:18,026 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:16:18,026 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:16:18,027 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:16:18,027 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:16:18,027 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:16:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2021-02-21 21:16:18,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 21:16:18,059 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:18,060 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] [2021-02-21 21:16:18,061 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:18,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:18,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2046579494, now seen corresponding path program 1 times [2021-02-21 21:16:18,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:18,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344641227] [2021-02-21 21:16:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:18,203 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:18,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:18,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:18,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:18,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344641227] [2021-02-21 21:16:18,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:18,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:16:18,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361982052] [2021-02-21 21:16:18,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:16:18,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:18,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:16:18,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:18,705 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2021-02-21 21:16:18,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:18,913 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2021-02-21 21:16:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:16:18,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-21 21:16:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:18,925 INFO L225 Difference]: With dead ends: 107 [2021-02-21 21:16:18,926 INFO L226 Difference]: Without dead ends: 57 [2021-02-21 21:16:18,930 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 [2021-02-21 21:16:18,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-21 21:16:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-21 21:16:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-21 21:16:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2021-02-21 21:16:18,985 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 36 [2021-02-21 21:16:18,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:18,986 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2021-02-21 21:16:18,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:16:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2021-02-21 21:16:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-21 21:16:18,988 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:18,988 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] [2021-02-21 21:16:18,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:16:18,989 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:18,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:18,990 INFO L82 PathProgramCache]: Analyzing trace with hash 968384054, now seen corresponding path program 1 times [2021-02-21 21:16:18,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:18,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626666187] [2021-02-21 21:16:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:18,995 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:19,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:19,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:19,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:19,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:19,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:19,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:19,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:19,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:19,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:19,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626666187] [2021-02-21 21:16:19,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:19,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:19,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760583761] [2021-02-21 21:16:19,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:19,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:19,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:19,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:19,146 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 5 states. [2021-02-21 21:16:19,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:19,449 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2021-02-21 21:16:19,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:19,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-21 21:16:19,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:19,454 INFO L225 Difference]: With dead ends: 103 [2021-02-21 21:16:19,454 INFO L226 Difference]: Without dead ends: 77 [2021-02-21 21:16:19,456 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 [2021-02-21 21:16:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-21 21:16:19,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2021-02-21 21:16:19,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-02-21 21:16:19,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2021-02-21 21:16:19,476 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 36 [2021-02-21 21:16:19,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:19,476 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2021-02-21 21:16:19,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:19,476 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2021-02-21 21:16:19,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-21 21:16:19,478 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:19,478 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] [2021-02-21 21:16:19,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:16:19,479 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:19,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:19,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1674472418, now seen corresponding path program 1 times [2021-02-21 21:16:19,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:19,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741120102] [2021-02-21 21:16:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:19,509 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:19,511 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:19,592 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:19,679 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:19,733 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:16:19,733 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:16:19,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:16:19,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:16:19 BoogieIcfgContainer [2021-02-21 21:16:19,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:16:19,763 INFO L168 Benchmark]: Toolchain (without parser) took 2599.21 ms. Allocated memory is still 161.5 MB. Free memory was 138.4 MB in the beginning and 113.0 MB in the end (delta: 25.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:19,764 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 161.5 MB. Free memory is still 137.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:16:19,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.54 ms. Allocated memory is still 161.5 MB. Free memory was 137.3 MB in the beginning and 127.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:19,767 INFO L168 Benchmark]: Boogie Preprocessor took 41.28 ms. Allocated memory is still 161.5 MB. Free memory was 127.3 MB in the beginning and 125.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:19,767 INFO L168 Benchmark]: RCFGBuilder took 446.93 ms. Allocated memory is still 161.5 MB. Free memory was 125.6 MB in the beginning and 142.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:19,768 INFO L168 Benchmark]: TraceAbstraction took 1821.68 ms. Allocated memory is still 161.5 MB. Free memory was 141.8 MB in the beginning and 113.0 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:19,772 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 161.5 MB. Free memory is still 137.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.54 ms. Allocated memory is still 161.5 MB. Free memory was 137.3 MB in the beginning and 127.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.28 ms. Allocated memory is still 161.5 MB. Free memory was 127.3 MB in the beginning and 125.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 446.93 ms. Allocated memory is still 161.5 MB. Free memory was 125.6 MB in the beginning and 142.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1821.68 ms. Allocated memory is still 161.5 MB. Free memory was 141.8 MB in the beginning and 113.0 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.3 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] int *a = malloc(sizeof(int)*N); [L30] i = 0 [L30] COND TRUE i < N [L32] a[i] = 0 [L30] i++ [L30] COND FALSE !(i < N) [L35] i = 0 [L35] COND TRUE i < N [L37] COND TRUE N%2 == 1 [L39] EXPR a[i] [L39] a[i] = a[i] + 2 [L35] i++ [L35] COND FALSE !(i < N) [L47] i = 0 [L47] COND TRUE i < N [L49] EXPR a[i] [L49] CALL __VERIFIER_assert(a[i] % 2 == N % 2) [L15] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 109 SDtfs, 75 SDslu, 41 SDs, 0 SdLazy, 154 SolverSat, 11 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=65occurred 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, 18 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...