/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/s2liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:51:59,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:59,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:59,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:51:59,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:51:59,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:51:59,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:51:59,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:51:59,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:51:59,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:51:59,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:51:59,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:51:59,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:59,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:59,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:59,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:59,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:59,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:59,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:59,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:59,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:59,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:59,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:59,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:59,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:59,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:59,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:59,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:59,925 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 [2021-02-23 13:51:59,956 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:59,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:59,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:59,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:59,958 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:59,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:59,959 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:59,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:59,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:59,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:59,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:59,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:59,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:59,960 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:59,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:59,960 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:59,960 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:59,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:59,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:59,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:59,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:59,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:59,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:59,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:59,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:59,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:59,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:59,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:59,963 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:52:00,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:52:00,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:52:00,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:52:00,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:52:00,400 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:52:00,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2liff.c [2021-02-23 13:52:00,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b946ca6e4/6058c0a8bdbe4dd5a02ec3c95c0657b6/FLAG11485bdc2 [2021-02-23 13:52:01,178 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:52:01,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s2liff.c [2021-02-23 13:52:01,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b946ca6e4/6058c0a8bdbe4dd5a02ec3c95c0657b6/FLAG11485bdc2 [2021-02-23 13:52:01,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b946ca6e4/6058c0a8bdbe4dd5a02ec3c95c0657b6 [2021-02-23 13:52:01,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:52:01,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:52:01,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:01,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:52:01,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:52:01,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:01" (1/1) ... [2021-02-23 13:52:01,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@583770cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:01, skipping insertion in model container [2021-02-23 13:52:01,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:01" (1/1) ... [2021-02-23 13:52:01,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:52:01,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:52:01,723 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/s2liff.c[589,602] [2021-02-23 13:52:01,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:01,757 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:52:01,773 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/s2liff.c[589,602] [2021-02-23 13:52:01,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:01,806 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:52:01,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:01 WrapperNode [2021-02-23 13:52:01,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:01,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:52:01,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:52:01,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:52:01,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:01" (1/1) ... [2021-02-23 13:52:01,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:01" (1/1) ... [2021-02-23 13:52:01,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:01" (1/1) ... [2021-02-23 13:52:01,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:01" (1/1) ... [2021-02-23 13:52:01,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:01" (1/1) ... [2021-02-23 13:52:01,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:01" (1/1) ... [2021-02-23 13:52:01,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:01" (1/1) ... [2021-02-23 13:52:01,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:52:01,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:52:01,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:52:01,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:52:01,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:52:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:52:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:52:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:52:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:52:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:52:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:52:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:52:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:52:02,031 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:52:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:52:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:52:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:52:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:52:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:52:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:52:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:52:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:52:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:52:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:52:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:52:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:52:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:52:02,521 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:52:02,522 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 13:52:02,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:02 BoogieIcfgContainer [2021-02-23 13:52:02,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:52:02,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:52:02,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:52:02,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:52:02,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:52:01" (1/3) ... [2021-02-23 13:52:02,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a88814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:02, skipping insertion in model container [2021-02-23 13:52:02,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:01" (2/3) ... [2021-02-23 13:52:02,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a88814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:02, skipping insertion in model container [2021-02-23 13:52:02,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:02" (3/3) ... [2021-02-23 13:52:02,573 INFO L111 eAbstractionObserver]: Analyzing ICFG s2liff.c [2021-02-23 13:52:02,581 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:52:02,586 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:52:02,607 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:52:02,653 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:52:02,654 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:52:02,654 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:52:02,654 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:52:02,654 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:52:02,654 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:52:02,654 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:52:02,655 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:52:02,688 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-02-23 13:52:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-23 13:52:02,696 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:02,697 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] [2021-02-23 13:52:02,697 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:02,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:02,709 INFO L82 PathProgramCache]: Analyzing trace with hash -378919619, now seen corresponding path program 1 times [2021-02-23 13:52:02,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:02,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027144281] [2021-02-23 13:52:02,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:03,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:03,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:03,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:03,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:03,205 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-02-23 13:52:03,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:03,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:03,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:03,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:52:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:03,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:03,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:03,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:03,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:03,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027144281] [2021-02-23 13:52:03,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:52:03,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:52:03,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354762756] [2021-02-23 13:52:03,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:52:03,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:03,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:52:03,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:52:03,322 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2021-02-23 13:52:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:03,499 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2021-02-23 13:52:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:52:03,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-02-23 13:52:03,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:03,510 INFO L225 Difference]: With dead ends: 60 [2021-02-23 13:52:03,510 INFO L226 Difference]: Without dead ends: 28 [2021-02-23 13:52:03,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:52:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-02-23 13:52:03,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-02-23 13:52:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-23 13:52:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-02-23 13:52:03,559 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-02-23 13:52:03,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:03,560 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-02-23 13:52:03,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:52:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-02-23 13:52:03,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-23 13:52:03,561 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:03,562 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] [2021-02-23 13:52:03,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:52:03,562 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:03,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:03,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1390036869, now seen corresponding path program 1 times [2021-02-23 13:52:03,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:03,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136068563] [2021-02-23 13:52:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:03,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:03,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:03,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:03,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:03,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:03,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:03,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:03,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:03,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:03,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:03,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:03,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:52:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:03,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:03,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:03,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136068563] [2021-02-23 13:52:03,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:52:03,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:52:03,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270018732] [2021-02-23 13:52:03,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:52:03,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:03,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:52:03,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:52:03,701 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2021-02-23 13:52:03,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:03,898 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-02-23 13:52:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:52:03,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-02-23 13:52:03,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:03,900 INFO L225 Difference]: With dead ends: 48 [2021-02-23 13:52:03,900 INFO L226 Difference]: Without dead ends: 35 [2021-02-23 13:52:03,901 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 [2021-02-23 13:52:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-23 13:52:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-02-23 13:52:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-23 13:52:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-02-23 13:52:03,912 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2021-02-23 13:52:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:03,913 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-02-23 13:52:03,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:52:03,913 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-02-23 13:52:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 13:52:03,914 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:03,915 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] [2021-02-23 13:52:03,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:52:03,915 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:03,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:03,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1506162525, now seen corresponding path program 1 times [2021-02-23 13:52:03,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:03,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750261859] [2021-02-23 13:52:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:52:03,976 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:52:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:52:04,026 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:52:04,091 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:52:04,091 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:52:04,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:52:04,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:52:04 BoogieIcfgContainer [2021-02-23 13:52:04,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:52:04,153 INFO L168 Benchmark]: Toolchain (without parser) took 2638.93 ms. Allocated memory is still 166.7 MB. Free memory was 142.7 MB in the beginning and 76.7 MB in the end (delta: 66.0 MB). Peak memory consumption was 66.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:04,154 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 166.7 MB. Free memory is still 138.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:52:04,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.25 ms. Allocated memory is still 166.7 MB. Free memory was 141.6 MB in the beginning and 131.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:04,155 INFO L168 Benchmark]: Boogie Preprocessor took 96.33 ms. Allocated memory is still 166.7 MB. Free memory was 131.1 MB in the beginning and 129.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:04,156 INFO L168 Benchmark]: RCFGBuilder took 627.77 ms. Allocated memory is still 166.7 MB. Free memory was 129.5 MB in the beginning and 149.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:04,158 INFO L168 Benchmark]: TraceAbstraction took 1611.73 ms. Allocated memory is still 166.7 MB. Free memory was 149.0 MB in the beginning and 76.7 MB in the end (delta: 72.4 MB). Peak memory consumption was 71.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:04,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 166.7 MB. Free memory is still 138.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 281.25 ms. Allocated memory is still 166.7 MB. Free memory was 141.6 MB in the beginning and 131.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 96.33 ms. Allocated memory is still 166.7 MB. Free memory was 131.1 MB in the beginning and 129.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 627.77 ms. Allocated memory is still 166.7 MB. Free memory was 129.5 MB in the beginning and 149.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1611.73 ms. Allocated memory is still 166.7 MB. Free memory was 149.0 MB in the beginning and 76.7 MB in the end (delta: 72.4 MB). Peak memory consumption was 71.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; 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] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = N [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}] [L32] COND TRUE i