/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-b7b32d2 [2021-02-21 16:25:29,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:25:29,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:25:29,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:25:29,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:25:29,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:25:29,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:25:29,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:25:29,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:25:29,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:25:29,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:25:29,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:25:29,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:25:29,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:25:29,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:25:29,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:25:29,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:25:29,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:25:29,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:25:29,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:25:29,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:25:29,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:25:29,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:25:29,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:25:29,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:25:29,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:25:29,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:25:29,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:25:29,486 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 [2021-02-21 16:25:29,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:25:29,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:25:29,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:25:29,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:25:29,547 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:25:29,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:25:29,547 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:25:29,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:25:29,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:25:29,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:25:29,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:25:29,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:25:29,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:25:29,550 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:25:29,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:25:29,551 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:25:29,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:25:29,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:25:29,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:25:29,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:25:29,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:25:29,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:25:29,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:25:29,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:25:29,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:25:29,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:25:29,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:25:29,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:25:29,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:25:29,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:25:30,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:25:30,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:25:30,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:25:30,017 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:25:30,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s2liff.c [2021-02-21 16:25:30,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac57acdd/976cbc3b6f644b8fa208bbd0c99f1dc9/FLAGe66aaf73c [2021-02-21 16:25:30,817 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:25:30,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s2liff.c [2021-02-21 16:25:30,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac57acdd/976cbc3b6f644b8fa208bbd0c99f1dc9/FLAGe66aaf73c [2021-02-21 16:25:31,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eac57acdd/976cbc3b6f644b8fa208bbd0c99f1dc9 [2021-02-21 16:25:31,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:25:31,198 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:25:31,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:31,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:25:31,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:25:31,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:31" (1/1) ... [2021-02-21 16:25:31,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0142cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:31, skipping insertion in model container [2021-02-21 16:25:31,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:31" (1/1) ... [2021-02-21 16:25:31,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:25:31,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:25:31,438 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] [2021-02-21 16:25:31,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:31,473 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:25:31,488 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] [2021-02-21 16:25:31,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:31,515 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:25:31,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:31 WrapperNode [2021-02-21 16:25:31,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:31,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:25:31,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:25:31,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:25:31,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:31" (1/1) ... [2021-02-21 16:25:31,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:31" (1/1) ... [2021-02-21 16:25:31,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:31" (1/1) ... [2021-02-21 16:25:31,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:31" (1/1) ... [2021-02-21 16:25:31,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:31" (1/1) ... [2021-02-21 16:25:31,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:31" (1/1) ... [2021-02-21 16:25:31,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:31" (1/1) ... [2021-02-21 16:25:31,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:25:31,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:25:31,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:25:31,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:25:31,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:31" (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 [2021-02-21 16:25:31,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:25:31,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:25:31,694 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:25:31,694 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:25:31,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:25:31,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:25:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:25:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:25:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:25:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:25:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:25:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:25:31,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:25:31,700 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:25:31,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:25:31,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:25:31,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:25:31,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:25:31,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:25:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:25:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:25:31,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:25:32,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:25:32,153 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 16:25:32,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:32 BoogieIcfgContainer [2021-02-21 16:25:32,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:25:32,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:25:32,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:25:32,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:25:32,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:25:31" (1/3) ... [2021-02-21 16:25:32,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7282959a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:32, skipping insertion in model container [2021-02-21 16:25:32,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:31" (2/3) ... [2021-02-21 16:25:32,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7282959a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:32, skipping insertion in model container [2021-02-21 16:25:32,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:32" (3/3) ... [2021-02-21 16:25:32,168 INFO L111 eAbstractionObserver]: Analyzing ICFG s2liff.c [2021-02-21 16:25:32,175 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:25:32,180 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:25:32,200 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:25:32,229 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:25:32,229 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:25:32,230 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:25:32,230 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:25:32,230 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:25:32,230 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:25:32,230 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:25:32,230 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:25:32,250 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-02-21 16:25:32,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 16:25:32,256 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:32,257 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] [2021-02-21 16:25:32,258 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:32,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:32,264 INFO L82 PathProgramCache]: Analyzing trace with hash -378919619, now seen corresponding path program 1 times [2021-02-21 16:25:32,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:32,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709955159] [2021-02-21 16:25:32,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:32,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:32,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:32,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:32,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:32,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:32,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:32,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:32,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:32,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:32,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:32,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:32,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:25:32,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709955159] [2021-02-21 16:25:32,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:32,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:25:32,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070686926] [2021-02-21 16:25:32,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:25:32,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:32,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:25:32,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:25:32,639 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2021-02-21 16:25:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:32,803 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2021-02-21 16:25:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:25:32,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-02-21 16:25:32,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:32,818 INFO L225 Difference]: With dead ends: 60 [2021-02-21 16:25:32,818 INFO L226 Difference]: Without dead ends: 28 [2021-02-21 16:25:32,823 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 [2021-02-21 16:25:32,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-02-21 16:25:32,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-02-21 16:25:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-21 16:25:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-02-21 16:25:32,883 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-02-21 16:25:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:32,884 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-02-21 16:25:32,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:25:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-02-21 16:25:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 16:25:32,885 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:32,886 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] [2021-02-21 16:25:32,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:25:32,886 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:32,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:32,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1390036869, now seen corresponding path program 1 times [2021-02-21 16:25:32,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:32,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050182342] [2021-02-21 16:25:32,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:32,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:32,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:32,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:32,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:33,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:33,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:25:33,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:33,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:33,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:33,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:33,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:33,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:33,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:33,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:25:33,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050182342] [2021-02-21 16:25:33,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:33,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:25:33,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766640846] [2021-02-21 16:25:33,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:25:33,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:33,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:25:33,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:25:33,125 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2021-02-21 16:25:33,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:33,348 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-02-21 16:25:33,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:25:33,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-02-21 16:25:33,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:33,357 INFO L225 Difference]: With dead ends: 48 [2021-02-21 16:25:33,357 INFO L226 Difference]: Without dead ends: 35 [2021-02-21 16:25:33,361 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 [2021-02-21 16:25:33,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-21 16:25:33,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-02-21 16:25:33,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-21 16:25:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-02-21 16:25:33,381 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2021-02-21 16:25:33,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:33,382 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-02-21 16:25:33,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:25:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-02-21 16:25:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 16:25:33,385 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:33,385 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] [2021-02-21 16:25:33,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:25:33,385 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:33,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:33,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1506162525, now seen corresponding path program 1 times [2021-02-21 16:25:33,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:33,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77501680] [2021-02-21 16:25:33,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:33,496 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:33,532 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:33,566 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:25:33,566 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:25:33,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:25:33,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:25:33 BoogieIcfgContainer [2021-02-21 16:25:33,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:25:33,613 INFO L168 Benchmark]: Toolchain (without parser) took 2428.62 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 54.8 MB in the end (delta: 70.8 MB). Peak memory consumption was 71.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:33,614 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 81.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:25:33,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.46 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 114.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:33,615 INFO L168 Benchmark]: Boogie Preprocessor took 73.82 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 112.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:33,616 INFO L168 Benchmark]: RCFGBuilder took 566.31 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 128.2 MB in the end (delta: -15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:33,617 INFO L168 Benchmark]: TraceAbstraction took 1451.71 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 54.8 MB in the end (delta: 72.9 MB). Peak memory consumption was 72.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:33,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 81.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 313.46 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 114.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.82 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 112.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 566.31 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 128.2 MB in the end (delta: -15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1451.71 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 54.8 MB in the end (delta: 72.9 MB). Peak memory consumption was 72.4 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