/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/s22iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:19,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:19,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:19,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:20:19,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:19,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:19,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:19,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:19,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:19,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:19,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:19,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:19,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:19,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:19,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:19,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:19,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:20:19,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:20:19,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:20:19,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:20:19,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:20:19,794 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:19,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:19,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:19,796 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:19,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:19,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:19,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:19,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:19,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:19,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:19,798 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:19,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:19,798 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:19,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:19,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:19,799 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:19,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:19,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:19,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:19,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:19,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:19,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:19,801 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:19,801 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:20:20,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:20:20,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:20:20,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:20:20,256 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:20:20,257 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:20:20,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s22iff.c [2021-02-22 02:20:20,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8f28d94/2fdd4ef08a47444aac05078003ef2687/FLAG7a2a17082 [2021-02-22 02:20:20,982 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:20:20,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s22iff.c [2021-02-22 02:20:20,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8f28d94/2fdd4ef08a47444aac05078003ef2687/FLAG7a2a17082 [2021-02-22 02:20:21,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df8f28d94/2fdd4ef08a47444aac05078003ef2687 [2021-02-22 02:20:21,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:20:21,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:20:21,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:21,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:20:21,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:20:21,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:21" (1/1) ... [2021-02-22 02:20:21,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750ca602 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:21, skipping insertion in model container [2021-02-22 02:20:21,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:21" (1/1) ... [2021-02-22 02:20:21,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:20:21,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:20:21,642 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/s22iff.c[589,602] [2021-02-22 02:20:21,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:21,682 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:20:21,697 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/s22iff.c[589,602] [2021-02-22 02:20:21,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:21,730 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:20:21,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:21 WrapperNode [2021-02-22 02:20:21,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:21,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:20:21,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:20:21,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:20:21,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:21" (1/1) ... [2021-02-22 02:20:21,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:21" (1/1) ... [2021-02-22 02:20:21,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:21" (1/1) ... [2021-02-22 02:20:21,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:21" (1/1) ... [2021-02-22 02:20:21,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:21" (1/1) ... [2021-02-22 02:20:21,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:21" (1/1) ... [2021-02-22 02:20:21,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:21" (1/1) ... [2021-02-22 02:20:21,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:20:21,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:20:21,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:20:21,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:20:21,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:21" (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 [2021-02-22 02:20:21,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:20:21,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:20:21,900 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:20:21,900 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:20:21,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:20:21,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:20:21,902 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:20:21,902 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:20:21,902 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:20:21,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:20:21,904 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:20:21,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:20:21,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:20:21,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:20:21,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:20:21,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:20:21,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:20:21,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:20:21,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:20:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:20:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:20:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:20:22,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:20:22,478 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-22 02:20:22,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:22 BoogieIcfgContainer [2021-02-22 02:20:22,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:20:22,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:20:22,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:20:22,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:20:22,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:20:21" (1/3) ... [2021-02-22 02:20:22,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f3aca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:22, skipping insertion in model container [2021-02-22 02:20:22,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:21" (2/3) ... [2021-02-22 02:20:22,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f3aca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:22, skipping insertion in model container [2021-02-22 02:20:22,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:22" (3/3) ... [2021-02-22 02:20:22,489 INFO L111 eAbstractionObserver]: Analyzing ICFG s22iff.c [2021-02-22 02:20:22,498 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:20:22,503 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:20:22,523 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:20:22,565 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:20:22,565 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:20:22,565 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:20:22,565 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:20:22,565 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:20:22,565 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:20:22,566 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:20:22,566 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:20:22,583 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2021-02-22 02:20:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-22 02:20:22,594 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:22,595 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] [2021-02-22 02:20:22,595 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:22,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:22,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1439408661, now seen corresponding path program 1 times [2021-02-22 02:20:22,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:22,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512812663] [2021-02-22 02:20:22,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:22,693 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:22,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:22,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:22,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:22,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:23,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:23,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:23,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:23,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:23,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:23,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:23,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512812663] [2021-02-22 02:20:23,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:23,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:20:23,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144395895] [2021-02-22 02:20:23,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:20:23,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:23,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:20:23,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:23,119 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2021-02-22 02:20:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:23,438 INFO L93 Difference]: Finished difference Result 149 states and 168 transitions. [2021-02-22 02:20:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:20:23,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-22 02:20:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:23,449 INFO L225 Difference]: With dead ends: 149 [2021-02-22 02:20:23,449 INFO L226 Difference]: Without dead ends: 73 [2021-02-22 02:20:23,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:23,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-22 02:20:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-22 02:20:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-22 02:20:23,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-02-22 02:20:23,511 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 38 [2021-02-22 02:20:23,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:23,512 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-02-22 02:20:23,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:20:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-02-22 02:20:23,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-22 02:20:23,514 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:23,514 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] [2021-02-22 02:20:23,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:20:23,515 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:23,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:23,516 INFO L82 PathProgramCache]: Analyzing trace with hash -415145042, now seen corresponding path program 1 times [2021-02-22 02:20:23,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:23,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455989138] [2021-02-22 02:20:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:23,521 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:23,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:23,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:23,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:23,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:20:23,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:23,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:20:23,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:23,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:23,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:23,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:23,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:23,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:23,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:23,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:23,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455989138] [2021-02-22 02:20:23,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:23,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:20:23,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723913749] [2021-02-22 02:20:23,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:20:23,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:23,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:20:23,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:20:23,794 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 5 states. [2021-02-22 02:20:24,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:24,215 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2021-02-22 02:20:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:20:24,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-22 02:20:24,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:24,220 INFO L225 Difference]: With dead ends: 147 [2021-02-22 02:20:24,220 INFO L226 Difference]: Without dead ends: 107 [2021-02-22 02:20:24,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:20:24,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-22 02:20:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 76. [2021-02-22 02:20:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-22 02:20:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-02-22 02:20:24,241 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 38 [2021-02-22 02:20:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:24,241 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-02-22 02:20:24,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:20:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-02-22 02:20:24,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-22 02:20:24,247 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:24,247 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] [2021-02-22 02:20:24,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:20:24,248 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:24,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:24,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1781170039, now seen corresponding path program 1 times [2021-02-22 02:20:24,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:24,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927844348] [2021-02-22 02:20:24,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:24,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:24,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:24,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:24,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:24,319 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-22 02:20:24,332 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-22 02:20:24,338 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-22 02:20:24,341 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-22 02:20:24,342 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:20:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:24,410 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:24,503 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:24,549 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:20:24,549 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:20:24,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:20:24,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:20:24 BoogieIcfgContainer [2021-02-22 02:20:24,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:20:24,574 INFO L168 Benchmark]: Toolchain (without parser) took 3205.77 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 140.8 MB in the beginning and 161.5 MB in the end (delta: -20.7 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:24,574 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:24,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.89 ms. Allocated memory is still 163.6 MB. Free memory was 139.7 MB in the beginning and 129.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:24,576 INFO L168 Benchmark]: Boogie Preprocessor took 47.42 ms. Allocated memory is still 163.6 MB. Free memory was 129.6 MB in the beginning and 127.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:24,577 INFO L168 Benchmark]: RCFGBuilder took 697.28 ms. Allocated memory is still 163.6 MB. Free memory was 127.8 MB in the beginning and 142.3 MB in the end (delta: -14.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:24,578 INFO L168 Benchmark]: TraceAbstraction took 2090.13 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 141.7 MB in the beginning and 161.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:24,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 347.89 ms. Allocated memory is still 163.6 MB. Free memory was 139.7 MB in the beginning and 129.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.42 ms. Allocated memory is still 163.6 MB. Free memory was 129.6 MB in the beginning and 127.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 697.28 ms. Allocated memory is still 163.6 MB. Free memory was 127.8 MB in the beginning and 142.3 MB in the end (delta: -14.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2090.13 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 141.7 MB in the beginning and 161.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i