/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/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:25:16,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:25:16,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:25:16,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:25:16,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:25:16,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:25:16,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:25:16,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:25:16,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:25:16,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:25:16,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:25:16,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:25:16,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:25:16,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:25:16,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:25:16,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:25:16,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:25:16,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:25:16,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:25:16,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:25:16,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:25:16,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:25:16,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:25:16,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:25:16,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:25:16,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:25:16,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:25:16,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:25:16,653 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 16:25:16,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:25:16,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:25:16,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:25:16,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:25:16,717 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:25:16,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:25:16,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:25:16,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:25:16,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:25:16,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:25:16,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:25:16,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:25:16,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:25:16,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:25:16,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:25:16,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:25:16,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:25:16,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:25:16,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:25:16,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:25:16,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:25:16,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:25:16,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:25:16,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:25:16,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:25:16,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:25:16,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:25:16,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:25:16,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:25:17,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:25:17,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:25:17,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:25:17,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:25:17,234 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:25:17,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2021-02-21 16:25:17,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58510cf04/e6cf709cb3464adeb618bff83e36f151/FLAGb74b9c5f9 [2021-02-21 16:25:17,867 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:25:17,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c [2021-02-21 16:25:17,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58510cf04/e6cf709cb3464adeb618bff83e36f151/FLAGb74b9c5f9 [2021-02-21 16:25:18,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58510cf04/e6cf709cb3464adeb618bff83e36f151 [2021-02-21 16:25:18,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:25:18,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:25:18,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:18,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:25:18,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:25:18,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:18" (1/1) ... [2021-02-21 16:25:18,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b70e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:18, skipping insertion in model container [2021-02-21 16:25:18,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:18" (1/1) ... [2021-02-21 16:25:18,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:25:18,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:25:18,562 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/ms1f.c[587,600] [2021-02-21 16:25:18,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:18,606 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:25:18,626 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/ms1f.c[587,600] [2021-02-21 16:25:18,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:18,670 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:25:18,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:18 WrapperNode [2021-02-21 16:25:18,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:18,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:25:18,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:25:18,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:25:18,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:18" (1/1) ... [2021-02-21 16:25:18,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:18" (1/1) ... [2021-02-21 16:25:18,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:18" (1/1) ... [2021-02-21 16:25:18,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:18" (1/1) ... [2021-02-21 16:25:18,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:18" (1/1) ... [2021-02-21 16:25:18,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:18" (1/1) ... [2021-02-21 16:25:18,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:18" (1/1) ... [2021-02-21 16:25:18,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:25:18,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:25:18,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:25:18,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:25:18,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:18" (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 16:25:18,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:25:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:25:18,895 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:25:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:25:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:25:18,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:25:18,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:25:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:25:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:25:18,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:25:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:25:18,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:25:18,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:25:18,899 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:25:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:25:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:25:18,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:25:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:25:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:25:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:25:18,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:25:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:25:19,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:25:19,434 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 16:25:19,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:19 BoogieIcfgContainer [2021-02-21 16:25:19,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:25:19,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:25:19,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:25:19,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:25:19,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:25:18" (1/3) ... [2021-02-21 16:25:19,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1391f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:19, skipping insertion in model container [2021-02-21 16:25:19,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:18" (2/3) ... [2021-02-21 16:25:19,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1391f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:19, skipping insertion in model container [2021-02-21 16:25:19,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:19" (3/3) ... [2021-02-21 16:25:19,445 INFO L111 eAbstractionObserver]: Analyzing ICFG ms1f.c [2021-02-21 16:25:19,453 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:25:19,457 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:25:19,479 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:25:19,508 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:25:19,508 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:25:19,508 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:25:19,508 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:25:19,509 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:25:19,509 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:25:19,509 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:25:19,509 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:25:19,528 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-02-21 16:25:19,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-21 16:25:19,535 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:19,536 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] [2021-02-21 16:25:19,536 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:19,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:19,544 INFO L82 PathProgramCache]: Analyzing trace with hash 863653859, now seen corresponding path program 1 times [2021-02-21 16:25:19,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:19,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289497686] [2021-02-21 16:25:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:19,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:19,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:19,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:19,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:19,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:19,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:19,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:19,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:19,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:19,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:19,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:19,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:19,900 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 16:25:19,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289497686] [2021-02-21 16:25:19,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:19,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:25:19,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592390089] [2021-02-21 16:25:19,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:25:19,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:19,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:25:19,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:25:19,927 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2021-02-21 16:25:20,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:20,071 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2021-02-21 16:25:20,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:25:20,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-02-21 16:25:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:20,082 INFO L225 Difference]: With dead ends: 54 [2021-02-21 16:25:20,082 INFO L226 Difference]: Without dead ends: 25 [2021-02-21 16:25:20,086 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 16:25:20,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-02-21 16:25:20,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-02-21 16:25:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-02-21 16:25:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-02-21 16:25:20,131 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2021-02-21 16:25:20,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:20,131 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-02-21 16:25:20,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:25:20,132 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-02-21 16:25:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-21 16:25:20,133 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:20,133 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] [2021-02-21 16:25:20,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:25:20,134 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:20,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:20,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1121819297, now seen corresponding path program 1 times [2021-02-21 16:25:20,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:20,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795489622] [2021-02-21 16:25:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:20,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:20,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:20,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:20,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:20,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:20,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:25:20,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:20,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:20,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:20,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:20,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:20,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:20,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:20,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:20,383 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 16:25:20,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795489622] [2021-02-21 16:25:20,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:20,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:25:20,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465047591] [2021-02-21 16:25:20,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:25:20,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:20,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:25:20,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:25:20,391 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2021-02-21 16:25:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:20,618 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-02-21 16:25:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:25:20,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-02-21 16:25:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:20,621 INFO L225 Difference]: With dead ends: 40 [2021-02-21 16:25:20,621 INFO L226 Difference]: Without dead ends: 30 [2021-02-21 16:25:20,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:25:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-21 16:25:20,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-02-21 16:25:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-21 16:25:20,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-02-21 16:25:20,632 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2021-02-21 16:25:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:20,633 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-02-21 16:25:20,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:25:20,633 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-02-21 16:25:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 16:25:20,634 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:20,635 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] [2021-02-21 16:25:20,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:25:20,635 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:20,636 INFO L82 PathProgramCache]: Analyzing trace with hash -667943349, now seen corresponding path program 1 times [2021-02-21 16:25:20,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:20,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673135311] [2021-02-21 16:25:20,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:20,726 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:20,814 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:20,847 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:25:20,847 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:25:20,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:25:20,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:25:20 BoogieIcfgContainer [2021-02-21 16:25:20,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:25:20,894 INFO L168 Benchmark]: Toolchain (without parser) took 2629.17 ms. Allocated memory is still 151.0 MB. Free memory was 124.3 MB in the beginning and 61.5 MB in the end (delta: 62.8 MB). Peak memory consumption was 63.9 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:20,895 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:25:20,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.24 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 113.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:20,897 INFO L168 Benchmark]: Boogie Preprocessor took 90.50 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 111.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:20,898 INFO L168 Benchmark]: RCFGBuilder took 671.15 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 130.7 MB in the end (delta: -19.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:20,898 INFO L168 Benchmark]: TraceAbstraction took 1455.22 ms. Allocated memory is still 151.0 MB. Free memory was 130.2 MB in the beginning and 61.5 MB in the end (delta: 68.7 MB). Peak memory consumption was 68.2 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:20,902 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 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 388.24 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 113.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.50 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 111.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 671.15 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 130.7 MB in the end (delta: -19.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1455.22 ms. Allocated memory is still 151.0 MB. Free memory was 130.2 MB in the beginning and 61.5 MB in the end (delta: 68.7 MB). Peak memory consumption was 68.2 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)=118, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={8:0}] [L31] COND TRUE i