/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/s3liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:25:31,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:25:31,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:25:31,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 16:25:31,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:25:31,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:25:31,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:25:31,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:25:31,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:25:31,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:25:31,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:25:31,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:25:31,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:25:31,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:25:31,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:25:31,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:25:31,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:25:31,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:25:31,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:25:31,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:25:31,742 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 16:25:31,768 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:25:31,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:25:31,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:25:31,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:25:31,771 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:25:31,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:25:31,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:25:31,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:25:31,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:25:31,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:25:31,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:25:31,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:25:31,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:25:31,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:25:31,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:25:31,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:25:31,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:25:31,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:25:31,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:25:31,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:25:31,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:25:31,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:25:31,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:25:31,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:25:31,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:25:31,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:25:31,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:25:31,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:25:31,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:25:32,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:25:32,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:25:32,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:25:32,192 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:25:32,193 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:25:32,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3liff.c [2021-02-21 16:25:32,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d4dcf75/48dcad60e0614775a06c864e0fce6bd6/FLAG4fc2b2b2a [2021-02-21 16:25:32,860 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:25:32,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s3liff.c [2021-02-21 16:25:32,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d4dcf75/48dcad60e0614775a06c864e0fce6bd6/FLAG4fc2b2b2a [2021-02-21 16:25:33,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d4dcf75/48dcad60e0614775a06c864e0fce6bd6 [2021-02-21 16:25:33,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:25:33,246 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:25:33,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:33,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:25:33,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:25:33,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:33" (1/1) ... [2021-02-21 16:25:33,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd254c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:33, skipping insertion in model container [2021-02-21 16:25:33,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:33" (1/1) ... [2021-02-21 16:25:33,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:25:33,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:25:33,540 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/s3liff.c[589,602] [2021-02-21 16:25:33,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:33,595 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:25:33,614 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/s3liff.c[589,602] [2021-02-21 16:25:33,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:33,663 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:25:33,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:33 WrapperNode [2021-02-21 16:25:33,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:33,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:25:33,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:25:33,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:25:33,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:33" (1/1) ... [2021-02-21 16:25:33,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:33" (1/1) ... [2021-02-21 16:25:33,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:33" (1/1) ... [2021-02-21 16:25:33,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:33" (1/1) ... [2021-02-21 16:25:33,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:33" (1/1) ... [2021-02-21 16:25:33,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:33" (1/1) ... [2021-02-21 16:25:33,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:33" (1/1) ... [2021-02-21 16:25:33,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:25:33,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:25:33,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:25:33,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:25:33,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:33" (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 16:25:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:25:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:25:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:25:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:25:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:25:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:25:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:25:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:25:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:25:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:25:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:25:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:25:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:25:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:25:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:25:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:25:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:25:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:25:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:25:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:25:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:25:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:25:34,438 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:25:34,439 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 16:25:34,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:34 BoogieIcfgContainer [2021-02-21 16:25:34,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:25:34,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:25:34,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:25:34,448 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:25:34,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:25:33" (1/3) ... [2021-02-21 16:25:34,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bed3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:34, skipping insertion in model container [2021-02-21 16:25:34,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:33" (2/3) ... [2021-02-21 16:25:34,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bed3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:34, skipping insertion in model container [2021-02-21 16:25:34,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:34" (3/3) ... [2021-02-21 16:25:34,453 INFO L111 eAbstractionObserver]: Analyzing ICFG s3liff.c [2021-02-21 16:25:34,461 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:25:34,466 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:25:34,487 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:25:34,526 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:25:34,527 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:25:34,527 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:25:34,527 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:25:34,527 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:25:34,527 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:25:34,527 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:25:34,527 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:25:34,546 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-02-21 16:25:34,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 16:25:34,553 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:34,553 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 16:25:34,554 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:34,561 INFO L82 PathProgramCache]: Analyzing trace with hash -378919619, now seen corresponding path program 1 times [2021-02-21 16:25:34,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:34,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131327662] [2021-02-21 16:25:34,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:34,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:34,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:34,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:34,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:34,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:34,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:34,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:34,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:34,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:34,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:34,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:34,933 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 16:25:34,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131327662] [2021-02-21 16:25:34,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:34,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:25:34,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093703422] [2021-02-21 16:25:34,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:25:34,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:34,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:25:34,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:25:34,965 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2021-02-21 16:25:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:35,068 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2021-02-21 16:25:35,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:25:35,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-02-21 16:25:35,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:35,078 INFO L225 Difference]: With dead ends: 60 [2021-02-21 16:25:35,078 INFO L226 Difference]: Without dead ends: 28 [2021-02-21 16:25:35,082 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 16:25:35,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-02-21 16:25:35,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-02-21 16:25:35,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-21 16:25:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-02-21 16:25:35,152 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-02-21 16:25:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:35,153 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-02-21 16:25:35,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:25:35,156 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-02-21 16:25:35,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 16:25:35,158 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:35,158 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 16:25:35,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:25:35,159 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:35,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:35,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1390036869, now seen corresponding path program 1 times [2021-02-21 16:25:35,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:35,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142537141] [2021-02-21 16:25:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:35,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:35,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:35,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:35,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:35,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:35,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:25:35,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:35,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:35,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:35,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:35,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:35,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:35,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:35,414 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 16:25:35,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142537141] [2021-02-21 16:25:35,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:35,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:25:35,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009230621] [2021-02-21 16:25:35,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:25:35,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:35,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:25:35,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:25:35,429 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2021-02-21 16:25:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:35,631 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-02-21 16:25:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:25:35,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-02-21 16:25:35,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:35,633 INFO L225 Difference]: With dead ends: 48 [2021-02-21 16:25:35,638 INFO L226 Difference]: Without dead ends: 35 [2021-02-21 16:25:35,640 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 16:25:35,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-21 16:25:35,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-02-21 16:25:35,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-21 16:25:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-02-21 16:25:35,663 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2021-02-21 16:25:35,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:35,664 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-02-21 16:25:35,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:25:35,665 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-02-21 16:25:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 16:25:35,668 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:35,668 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 16:25:35,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:25:35,671 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:35,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:35,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1506162525, now seen corresponding path program 1 times [2021-02-21 16:25:35,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:35,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625649736] [2021-02-21 16:25:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:35,821 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:35,888 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:35,934 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:25:35,934 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:25:35,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:25:35,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:25:35 BoogieIcfgContainer [2021-02-21 16:25:35,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:25:35,985 INFO L168 Benchmark]: Toolchain (without parser) took 2751.64 ms. Allocated memory was 161.5 MB in the beginning and 206.6 MB in the end (delta: 45.1 MB). Free memory was 142.5 MB in the beginning and 147.8 MB in the end (delta: -5.3 MB). Peak memory consumption was 38.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:35,986 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 161.5 MB. Free memory was 134.3 MB in the beginning and 134.3 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:25:35,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.59 ms. Allocated memory is still 161.5 MB. Free memory was 141.2 MB in the beginning and 131.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:35,988 INFO L168 Benchmark]: Boogie Preprocessor took 83.58 ms. Allocated memory is still 161.5 MB. Free memory was 131.3 MB in the beginning and 129.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:35,989 INFO L168 Benchmark]: RCFGBuilder took 691.20 ms. Allocated memory is still 161.5 MB. Free memory was 129.4 MB in the beginning and 128.9 MB in the end (delta: 489.2 kB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:35,991 INFO L168 Benchmark]: TraceAbstraction took 1539.17 ms. Allocated memory was 161.5 MB in the beginning and 206.6 MB in the end (delta: 45.1 MB). Free memory was 128.4 MB in the beginning and 147.8 MB in the end (delta: -19.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:36,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 161.5 MB. Free memory was 134.3 MB in the beginning and 134.3 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 415.59 ms. Allocated memory is still 161.5 MB. Free memory was 141.2 MB in the beginning and 131.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 83.58 ms. Allocated memory is still 161.5 MB. Free memory was 131.3 MB in the beginning and 129.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 691.20 ms. Allocated memory is still 161.5 MB. Free memory was 129.4 MB in the beginning and 128.9 MB in the end (delta: 489.2 kB). Peak memory consumption was 3.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1539.17 ms. Allocated memory was 161.5 MB in the beginning and 206.6 MB in the end (delta: 45.1 MB). Free memory was 128.4 MB in the beginning and 147.8 MB in the end (delta: -19.4 MB). Peak memory consumption was 25.2 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={11:0}] [L32] COND TRUE i