/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/array-fpi/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:32,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:32,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:32,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:46:32,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:32,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:32,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:32,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:32,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:32,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:32,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:32,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:32,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:32,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:32,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:32,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:32,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:46:32,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:32,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:32,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:32,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:46:32,933 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:32,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:32,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:32,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:32,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:32,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:32,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:32,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:32,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:32,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:32,941 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:32,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:32,941 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:32,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:32,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:32,942 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:32,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:32,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:32,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:32,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:32,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:32,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:32,943 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:32,943 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:33,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:33,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:33,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:33,332 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:33,332 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:33,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2021-02-24 04:46:33,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1191b7c08/6a01e414340b451a8bebe58a68e45939/FLAG436e33bfe [2021-02-24 04:46:34,069 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:34,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modsf.c [2021-02-24 04:46:34,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1191b7c08/6a01e414340b451a8bebe58a68e45939/FLAG436e33bfe [2021-02-24 04:46:34,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1191b7c08/6a01e414340b451a8bebe58a68e45939 [2021-02-24 04:46:34,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:34,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:34,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:34,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:34,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:34,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:34" (1/1) ... [2021-02-24 04:46:34,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa99d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:34, skipping insertion in model container [2021-02-24 04:46:34,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:34" (1/1) ... [2021-02-24 04:46:34,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:34,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:34,672 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modsf.c[588,601] [2021-02-24 04:46:34,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:34,716 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:34,730 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modsf.c[588,601] [2021-02-24 04:46:34,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:34,757 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:34,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:34 WrapperNode [2021-02-24 04:46:34,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:34,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:34,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:34,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:34,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:34" (1/1) ... [2021-02-24 04:46:34,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:34" (1/1) ... [2021-02-24 04:46:34,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:34" (1/1) ... [2021-02-24 04:46:34,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:34" (1/1) ... [2021-02-24 04:46:34,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:34" (1/1) ... [2021-02-24 04:46:34,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:34" (1/1) ... [2021-02-24 04:46:34,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:34" (1/1) ... [2021-02-24 04:46:34,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:34,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:34,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:34,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:34,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:34,895 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:34,895 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:34,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:34,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:35,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:35,364 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 04:46:35,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:35 BoogieIcfgContainer [2021-02-24 04:46:35,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:35,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:35,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:35,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:35,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:34" (1/3) ... [2021-02-24 04:46:35,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52826eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:35, skipping insertion in model container [2021-02-24 04:46:35,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:34" (2/3) ... [2021-02-24 04:46:35,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52826eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:35, skipping insertion in model container [2021-02-24 04:46:35,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:35" (3/3) ... [2021-02-24 04:46:35,375 INFO L111 eAbstractionObserver]: Analyzing ICFG modsf.c [2021-02-24 04:46:35,382 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:35,390 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:35,408 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:35,431 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:35,431 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:35,431 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:35,431 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:35,431 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:35,432 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:35,432 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:35,432 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:35,449 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2021-02-24 04:46:35,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 04:46:35,460 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:35,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:35,462 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:35,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:35,469 INFO L82 PathProgramCache]: Analyzing trace with hash 455365332, now seen corresponding path program 1 times [2021-02-24 04:46:35,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:35,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113351648] [2021-02-24 04:46:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:35,562 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:35,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:35,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:35,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:35,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:35,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:35,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:35,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:35,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:35,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:35,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:35,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113351648] [2021-02-24 04:46:35,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:35,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:35,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144829652] [2021-02-24 04:46:35,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:35,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:35,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:35,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:35,867 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 3 states. [2021-02-24 04:46:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:36,058 INFO L93 Difference]: Finished difference Result 151 states and 174 transitions. [2021-02-24 04:46:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:36,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-24 04:46:36,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:36,070 INFO L225 Difference]: With dead ends: 151 [2021-02-24 04:46:36,070 INFO L226 Difference]: Without dead ends: 77 [2021-02-24 04:46:36,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:36,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-24 04:46:36,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-02-24 04:46:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-02-24 04:46:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2021-02-24 04:46:36,134 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 42 [2021-02-24 04:46:36,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:36,135 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2021-02-24 04:46:36,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:36,135 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2021-02-24 04:46:36,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 04:46:36,137 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:36,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:36,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:36,138 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:36,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:36,140 INFO L82 PathProgramCache]: Analyzing trace with hash 2083403351, now seen corresponding path program 1 times [2021-02-24 04:46:36,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:36,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388591466] [2021-02-24 04:46:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:36,144 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:36,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:36,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:36,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:36,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:36,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:36,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:36,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:36,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:36,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:36,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:36,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:36,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:36,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:36,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:36,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388591466] [2021-02-24 04:46:36,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:36,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:36,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738062529] [2021-02-24 04:46:36,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:36,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:36,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:36,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:36,380 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 5 states. [2021-02-24 04:46:36,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:36,658 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2021-02-24 04:46:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:36,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-24 04:46:36,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:36,662 INFO L225 Difference]: With dead ends: 155 [2021-02-24 04:46:36,663 INFO L226 Difference]: Without dead ends: 111 [2021-02-24 04:46:36,664 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 [2021-02-24 04:46:36,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-24 04:46:36,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 81. [2021-02-24 04:46:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-24 04:46:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-02-24 04:46:36,686 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 42 [2021-02-24 04:46:36,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:36,687 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-02-24 04:46:36,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:36,687 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-02-24 04:46:36,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-24 04:46:36,689 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:36,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:36,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:36,690 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:36,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:36,691 INFO L82 PathProgramCache]: Analyzing trace with hash -556502197, now seen corresponding path program 1 times [2021-02-24 04:46:36,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:36,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188440664] [2021-02-24 04:46:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:36,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:36,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:36,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:36,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:36,742 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:46:36,760 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:46:36,765 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-24 04:46:36,768 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-24 04:46:36,769 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:36,798 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 04:46:36,799 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:36,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:36,823 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 04:46:36,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:36 BoogieIcfgContainer [2021-02-24 04:46:36,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:36,826 INFO L168 Benchmark]: Toolchain (without parser) took 2412.61 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 141.8 MB in the beginning and 121.0 MB in the end (delta: 20.8 MB). Peak memory consumption was 55.2 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:36,826 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 165.7 MB. Free memory is still 137.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:36,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.51 ms. Allocated memory is still 165.7 MB. Free memory was 140.6 MB in the beginning and 130.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:36,828 INFO L168 Benchmark]: Boogie Preprocessor took 40.88 ms. Allocated memory is still 165.7 MB. Free memory was 130.6 MB in the beginning and 128.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:36,829 INFO L168 Benchmark]: RCFGBuilder took 566.03 ms. Allocated memory is still 165.7 MB. Free memory was 128.8 MB in the beginning and 141.4 MB in the end (delta: -12.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:36,830 INFO L168 Benchmark]: TraceAbstraction took 1455.71 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 140.9 MB in the beginning and 121.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:36,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 165.7 MB. Free memory is still 137.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.51 ms. Allocated memory is still 165.7 MB. Free memory was 140.6 MB in the beginning and 130.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.88 ms. Allocated memory is still 165.7 MB. Free memory was 130.6 MB in the beginning and 128.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 566.03 ms. Allocated memory is still 165.7 MB. Free memory was 128.8 MB in the beginning and 141.4 MB in the end (delta: -12.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1455.71 ms. Allocated memory was 165.7 MB in the beginning and 199.2 MB in the end (delta: 33.6 MB). Free memory was 140.9 MB in the beginning and 121.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 53.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i