/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:41:46,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:41:46,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:41:46,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:41:46,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:41:46,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:41:46,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:41:46,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:41:46,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:41:46,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:41:46,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:41:46,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:41:46,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:41:46,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:41:46,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:41:46,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:41:46,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:41:46,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:41:46,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:41:46,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:41:46,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:41:46,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:41:46,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:41:46,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:41:46,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 18:41:46,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 18:41:46,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 18:41:46,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 18:41:46,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 18:41:46,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 18:41:46,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 18:41:46,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 18:41:46,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 18:41:46,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 18:41:46,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 18:41:46,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 18:41:46,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 18:41:46,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 18:41:46,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:41:46,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:41:46,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:41:46,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:41:46,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:41:46,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:41:46,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:41:46,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:41:46,966 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:41:46,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:41:46,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:41:46,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:41:46,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:41:46,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:41:46,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:41:46,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:41:46,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:41:46,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:41:46,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:41:46,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:41:46,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:41:46,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:41:46,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:41:46,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:41:46,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:41:46,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:41:46,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:41:46,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:41:46,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:41:46,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:41:46,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:41:46,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:41:46,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:41:46,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:41:47,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:41:47,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:41:47,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:41:47,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:41:47,500 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:41:47,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c [2020-10-23 18:41:47,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a962635db/d9355c1c52764cab9278328a4042643a/FLAGdee2f4cf4 [2020-10-23 18:41:48,301 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:41:48,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condmf.c [2020-10-23 18:41:48,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a962635db/d9355c1c52764cab9278328a4042643a/FLAGdee2f4cf4 [2020-10-23 18:41:48,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a962635db/d9355c1c52764cab9278328a4042643a [2020-10-23 18:41:48,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:41:48,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:41:48,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:41:48,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:41:48,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:41:48,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:41:48" (1/1) ... [2020-10-23 18:41:48,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f70049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:48, skipping insertion in model container [2020-10-23 18:41:48,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:41:48" (1/1) ... [2020-10-23 18:41:48,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:41:48,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:41:48,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:41:48,908 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:41:48,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:41:48,949 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:41:48,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:48 WrapperNode [2020-10-23 18:41:48,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:41:48,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:41:48,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:41:48,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:41:48,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:48" (1/1) ... [2020-10-23 18:41:48,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:48" (1/1) ... [2020-10-23 18:41:48,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:48" (1/1) ... [2020-10-23 18:41:48,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:48" (1/1) ... [2020-10-23 18:41:48,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:48" (1/1) ... [2020-10-23 18:41:48,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:48" (1/1) ... [2020-10-23 18:41:48,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:48" (1/1) ... [2020-10-23 18:41:48,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:41:48,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:41:48,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:41:48,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:41:48,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:48" (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 [2020-10-23 18:41:49,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:41:49,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:41:49,081 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:41:49,081 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:41:49,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:41:49,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:41:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:41:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:41:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:41:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:41:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:41:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:41:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:41:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:41:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:41:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:41:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:41:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:41:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:41:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:41:49,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:41:49,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:41:49,583 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:41:49,583 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 18:41:49,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:41:49 BoogieIcfgContainer [2020-10-23 18:41:49,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:41:49,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:41:49,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:41:49,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:41:49,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:41:48" (1/3) ... [2020-10-23 18:41:49,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607cd9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:41:49, skipping insertion in model container [2020-10-23 18:41:49,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:41:48" (2/3) ... [2020-10-23 18:41:49,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607cd9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:41:49, skipping insertion in model container [2020-10-23 18:41:49,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:41:49" (3/3) ... [2020-10-23 18:41:49,597 INFO L111 eAbstractionObserver]: Analyzing ICFG condmf.c [2020-10-23 18:41:49,612 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:41:49,617 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:41:49,632 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:41:49,682 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:41:49,682 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:41:49,682 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:41:49,682 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:41:49,683 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:41:49,683 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:41:49,683 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:41:49,683 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:41:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-23 18:41:49,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 18:41:49,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:49,717 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] [2020-10-23 18:41:49,718 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:49,734 INFO L82 PathProgramCache]: Analyzing trace with hash -603566119, now seen corresponding path program 1 times [2020-10-23 18:41:49,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:49,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210389696] [2020-10-23 18:41:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:50,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:41:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:50,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:41:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:41:50,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210389696] [2020-10-23 18:41:50,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:41:50,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:41:50,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467448743] [2020-10-23 18:41:50,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:41:50,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:50,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:41:50,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:41:50,118 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-10-23 18:41:50,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:50,272 INFO L93 Difference]: Finished difference Result 65 states and 83 transitions. [2020-10-23 18:41:50,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:41:50,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-23 18:41:50,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:50,282 INFO L225 Difference]: With dead ends: 65 [2020-10-23 18:41:50,283 INFO L226 Difference]: Without dead ends: 31 [2020-10-23 18:41:50,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:41:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-23 18:41:50,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-23 18:41:50,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-23 18:41:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-23 18:41:50,334 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-10-23 18:41:50,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:50,335 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-23 18:41:50,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:41:50,335 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-23 18:41:50,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 18:41:50,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:50,337 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] [2020-10-23 18:41:50,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:41:50,337 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:50,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:50,342 INFO L82 PathProgramCache]: Analyzing trace with hash 689239426, now seen corresponding path program 1 times [2020-10-23 18:41:50,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:50,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273775405] [2020-10-23 18:41:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:50,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:41:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:50,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 18:41:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:41:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:41:50,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273775405] [2020-10-23 18:41:50,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:41:50,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:41:50,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93114632] [2020-10-23 18:41:50,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:41:50,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:41:50,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:41:50,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:41:50,549 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2020-10-23 18:41:50,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:41:50,747 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-10-23 18:41:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:41:50,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-23 18:41:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:41:50,751 INFO L225 Difference]: With dead ends: 56 [2020-10-23 18:41:50,751 INFO L226 Difference]: Without dead ends: 40 [2020-10-23 18:41:50,753 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 [2020-10-23 18:41:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-23 18:41:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2020-10-23 18:41:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-23 18:41:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-23 18:41:50,769 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 23 [2020-10-23 18:41:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:41:50,769 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-23 18:41:50,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:41:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-23 18:41:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 18:41:50,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:41:50,771 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] [2020-10-23 18:41:50,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:41:50,771 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:41:50,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:41:50,772 INFO L82 PathProgramCache]: Analyzing trace with hash 493588519, now seen corresponding path program 1 times [2020-10-23 18:41:50,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:41:50,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353400351] [2020-10-23 18:41:50,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:41:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:41:50,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:41:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:41:50,917 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:41:50,955 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:41:50,955 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:41:50,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:41:50,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:41:50 BoogieIcfgContainer [2020-10-23 18:41:50,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:41:51,000 INFO L168 Benchmark]: Toolchain (without parser) took 2345.69 ms. Allocated memory is still 162.5 MB. Free memory was 138.2 MB in the beginning and 77.9 MB in the end (delta: 60.3 MB). Peak memory consumption was 61.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:51,001 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 162.5 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:41:51,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.31 ms. Allocated memory is still 162.5 MB. Free memory was 137.6 MB in the beginning and 127.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:51,004 INFO L168 Benchmark]: Boogie Preprocessor took 44.35 ms. Allocated memory is still 162.5 MB. Free memory was 127.9 MB in the beginning and 126.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:51,005 INFO L168 Benchmark]: RCFGBuilder took 588.58 ms. Allocated memory is still 162.5 MB. Free memory was 126.0 MB in the beginning and 109.7 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:51,006 INFO L168 Benchmark]: TraceAbstraction took 1410.45 ms. Allocated memory is still 162.5 MB. Free memory was 109.3 MB in the beginning and 77.9 MB in the end (delta: 31.4 MB). Peak memory consumption was 32.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:41:51,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 162.5 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.31 ms. Allocated memory is still 162.5 MB. Free memory was 137.6 MB in the beginning and 127.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.35 ms. Allocated memory is still 162.5 MB. Free memory was 127.9 MB in the beginning and 126.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 588.58 ms. Allocated memory is still 162.5 MB. Free memory was 126.0 MB in the beginning and 109.7 MB in the end (delta: 16.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1410.45 ms. Allocated memory is still 162.5 MB. Free memory was 109.3 MB in the beginning and 77.9 MB in the end (delta: 31.4 MB). Peak memory consumption was 32.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] int *a = malloc(sizeof(int)*N); [L30] i = 0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L30] COND TRUE i < N [L32] a[i] = 0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L30] i++ VAL [\old(N)=0, a={-2:0}, i=1, malloc(sizeof(int)*N)={-2:0}, N=1] [L30] COND FALSE !(i < N) VAL [\old(N)=0, a={-2:0}, i=1, malloc(sizeof(int)*N)={-2:0}, N=1] [L35] i = 0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L35] COND TRUE i < N VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L37] COND TRUE N%2 == 1 [L39] EXPR a[i] [L39] a[i] = a[i] + 2 [L35] i++ VAL [\old(N)=0, a={-2:0}, i=1, malloc(sizeof(int)*N)={-2:0}, N=1] [L35] COND FALSE !(i < N) VAL [\old(N)=0, a={-2:0}, i=1, malloc(sizeof(int)*N)={-2:0}, N=1] [L47] i = 0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L47] COND TRUE i < N [L49] EXPR a[i] VAL [\old(N)=0, a={-2:0}, a[i]=2, i=0, malloc(sizeof(int)*N)={-2:0}, N=1] [L49] CALL __VERIFIER_assert(a[i] % 2 == N % 2) VAL [\old(cond)=0, \old(N)=0, N=1] [L15] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L15] CALL reach_error() VAL [\old(N)=0, N=1] [L10] __assert_fail("0", "condmf.c", 10, "reach_error") VAL [\old(N)=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 52 SDslu, 11 SDs, 0 SdLazy, 85 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 2640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...