/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/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:55:18,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:55:18,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:55:18,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:55:18,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:55:18,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:55:18,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:55:18,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:55:18,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:55:18,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:55:18,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:55:18,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:55:18,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:55:18,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:55:18,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:55:18,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:55:18,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:55:18,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:55:18,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:55:18,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:55:18,698 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 18:55:18,717 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:55:18,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:55:18,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:55:18,721 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:55:18,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:55:18,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:55:18,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:55:18,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:55:18,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:55:18,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:55:18,722 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:55:18,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:55:18,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:55:18,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:55:18,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:55:18,724 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:55:18,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:55:18,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:55:18,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:55:18,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:55:18,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:55:18,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:55:18,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:55:19,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:55:19,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:55:19,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:55:19,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:55:19,414 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:55:19,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2021-02-23 18:55:19,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bbc78aba/b58d2d2516974c1a8857b826cb2effdd/FLAGd655f2d44 [2021-02-23 18:55:20,377 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:55:20,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2021-02-23 18:55:20,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bbc78aba/b58d2d2516974c1a8857b826cb2effdd/FLAGd655f2d44 [2021-02-23 18:55:20,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bbc78aba/b58d2d2516974c1a8857b826cb2effdd [2021-02-23 18:55:20,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:55:20,719 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:55:20,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:55:20,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:55:20,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:55:20,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:55:20" (1/1) ... [2021-02-23 18:55:20,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1475427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:20, skipping insertion in model container [2021-02-23 18:55:20,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:55:20" (1/1) ... [2021-02-23 18:55:20,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:55:20,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:55:20,970 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i[893,906] [2021-02-23 18:55:20,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:55:21,008 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:55:21,029 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i[893,906] [2021-02-23 18:55:21,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:55:21,059 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:55:21,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:21 WrapperNode [2021-02-23 18:55:21,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:55:21,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:55:21,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:55:21,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:55:21,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:21" (1/1) ... [2021-02-23 18:55:21,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:21" (1/1) ... [2021-02-23 18:55:21,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:21" (1/1) ... [2021-02-23 18:55:21,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:21" (1/1) ... [2021-02-23 18:55:21,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:21" (1/1) ... [2021-02-23 18:55:21,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:21" (1/1) ... [2021-02-23 18:55:21,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:21" (1/1) ... [2021-02-23 18:55:21,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:55:21,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:55:21,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:55:21,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:55:21,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:21" (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 18:55:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:55:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:55:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:55:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:55:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:55:21,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:55:21,271 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:55:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:55:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:55:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:55:21,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:55:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:55:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:55:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:55:21,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:55:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:55:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:55:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:55:21,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:55:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:55:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:55:21,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:55:21,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:55:21,819 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 18:55:21,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:55:21 BoogieIcfgContainer [2021-02-23 18:55:21,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:55:21,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:55:21,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:55:21,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:55:21,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:55:20" (1/3) ... [2021-02-23 18:55:21,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b83949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:55:21, skipping insertion in model container [2021-02-23 18:55:21,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:55:21" (2/3) ... [2021-02-23 18:55:21,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b83949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:55:21, skipping insertion in model container [2021-02-23 18:55:21,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:55:21" (3/3) ... [2021-02-23 18:55:21,853 INFO L111 eAbstractionObserver]: Analyzing ICFG id_trans.i [2021-02-23 18:55:21,867 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:55:21,876 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:55:21,916 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:55:21,996 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:55:21,997 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:55:22,000 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:55:22,001 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:55:22,001 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:55:22,001 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:55:22,001 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:55:22,001 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:55:22,056 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2021-02-23 18:55:22,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-23 18:55:22,077 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:22,080 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] [2021-02-23 18:55:22,081 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:22,110 INFO L82 PathProgramCache]: Analyzing trace with hash -318723043, now seen corresponding path program 1 times [2021-02-23 18:55:22,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:22,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216622834] [2021-02-23 18:55:22,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:22,307 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:22,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:22,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:22,775 WARN L141 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-02-23 18:55:22,777 WARN L147 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size 3 [2021-02-23 18:55:22,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:22,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:22,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:22,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:22,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:22,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:22,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:22,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:22,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:23,013 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 18:55:23,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216622834] [2021-02-23 18:55:23,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:23,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:55:23,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516977531] [2021-02-23 18:55:23,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:55:23,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:23,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:55:23,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:55:23,067 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2021-02-23 18:55:23,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:23,883 INFO L93 Difference]: Finished difference Result 81 states and 106 transitions. [2021-02-23 18:55:23,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:55:23,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2021-02-23 18:55:23,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:23,913 INFO L225 Difference]: With dead ends: 81 [2021-02-23 18:55:23,914 INFO L226 Difference]: Without dead ends: 52 [2021-02-23 18:55:23,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:55:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-23 18:55:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2021-02-23 18:55:24,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-23 18:55:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-02-23 18:55:24,049 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 32 [2021-02-23 18:55:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:24,051 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-02-23 18:55:24,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:55:24,052 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-02-23 18:55:24,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-23 18:55:24,055 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:24,056 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:24,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:55:24,057 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:24,060 INFO L82 PathProgramCache]: Analyzing trace with hash 845329194, now seen corresponding path program 1 times [2021-02-23 18:55:24,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:24,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982651251] [2021-02-23 18:55:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:24,073 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:24,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:24,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:24,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:24,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:24,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:24,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:24,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:24,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:24,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:24,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:55:24,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:24,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:24,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:55:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:24,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:24,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:24,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 18:55:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:55:24,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:55:24,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:55:24,230 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 18:55:24,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982651251] [2021-02-23 18:55:24,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:55:24,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:55:24,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108087465] [2021-02-23 18:55:24,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:55:24,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:55:24,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:55:24,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:55:24,235 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 6 states. [2021-02-23 18:55:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:55:24,553 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2021-02-23 18:55:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:55:24,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2021-02-23 18:55:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:55:24,559 INFO L225 Difference]: With dead ends: 55 [2021-02-23 18:55:24,560 INFO L226 Difference]: Without dead ends: 53 [2021-02-23 18:55:24,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:55:24,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-23 18:55:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-02-23 18:55:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-23 18:55:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-02-23 18:55:24,582 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 37 [2021-02-23 18:55:24,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:55:24,583 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-02-23 18:55:24,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:55:24,583 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-02-23 18:55:24,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-23 18:55:24,586 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:55:24,586 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:24,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:55:24,587 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:55:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:55:24,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1460950730, now seen corresponding path program 1 times [2021-02-23 18:55:24,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:55:24,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339781385] [2021-02-23 18:55:24,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:55:24,593 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:55:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:55:24,635 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:55:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:55:24,682 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:55:24,722 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:55:24,723 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:55:24,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:55:24,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:55:24 BoogieIcfgContainer [2021-02-23 18:55:24,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:55:24,751 INFO L168 Benchmark]: Toolchain (without parser) took 4043.07 ms. Allocated memory is still 161.5 MB. Free memory was 138.0 MB in the beginning and 68.9 MB in the end (delta: 69.1 MB). Peak memory consumption was 70.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:55:24,752 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 161.5 MB. Free memory is still 135.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:55:24,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.25 ms. Allocated memory is still 161.5 MB. Free memory was 136.9 MB in the beginning and 127.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:55:24,754 INFO L168 Benchmark]: Boogie Preprocessor took 53.54 ms. Allocated memory is still 161.5 MB. Free memory was 127.2 MB in the beginning and 125.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:55:24,755 INFO L168 Benchmark]: RCFGBuilder took 712.29 ms. Allocated memory is still 161.5 MB. Free memory was 125.7 MB in the beginning and 140.9 MB in the end (delta: -15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:55:24,756 INFO L168 Benchmark]: TraceAbstraction took 2914.55 ms. Allocated memory is still 161.5 MB. Free memory was 139.9 MB in the beginning and 68.9 MB in the end (delta: 71.0 MB). Peak memory consumption was 72.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:55:24,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 161.5 MB. Free memory is still 135.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 339.25 ms. Allocated memory is still 161.5 MB. Free memory was 136.9 MB in the beginning and 127.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.54 ms. Allocated memory is still 161.5 MB. Free memory was 127.2 MB in the beginning and 125.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 712.29 ms. Allocated memory is still 161.5 MB. Free memory was 125.7 MB in the beginning and 140.9 MB in the end (delta: -15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2914.55 ms. Allocated memory is still 161.5 MB. Free memory was 139.9 MB in the beginning and 68.9 MB in the end (delta: 71.0 MB). Peak memory consumption was 72.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int idBitLength, material_length, nlen; [L26] int j, k; [L27] nlen = __VERIFIER_nondet_int() [L28] idBitLength = __VERIFIER_nondet_int() [L29] material_length = __VERIFIER_nondet_int() [L30] COND FALSE !(!( nlen == idBitLength / 32 )) [L31] j = 0 [L31] COND TRUE (j < idBitLength / 8) && (j < material_length) [L32] CALL __VERIFIER_assert( 0 <= j) [L18] COND FALSE !(!(cond)) [L32] RET __VERIFIER_assert( 0 <= j) [L33] CALL __VERIFIER_assert( j < material_length ) [L18] COND FALSE !(!(cond)) [L33] RET __VERIFIER_assert( j < material_length ) [L34] CALL __VERIFIER_assert( 0 <= j/4 ) [L18] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert( 0 <= j/4 ) [L35] CALL __VERIFIER_assert( j/4 < nlen) [L18] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 78 SDslu, 98 SDs, 0 SdLazy, 232 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 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...