/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/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:58:38,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:58:38,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:58:39,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:58:39,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:58:39,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:58:39,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:58:39,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:58:39,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:58:39,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:58:39,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:58:39,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:58:39,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:58:39,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:58:39,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:58:39,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:58:39,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:58:39,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:58:39,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:58:39,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:58:39,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:58:39,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:58:39,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:58:39,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:58:39,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:58:39,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:58:39,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:58:39,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:58:39,149 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 [2021-02-19 17:58:39,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:58:39,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:58:39,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:58:39,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:58:39,207 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:58:39,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:58:39,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:58:39,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:58:39,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:58:39,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:58:39,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:58:39,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:58:39,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:58:39,210 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:58:39,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:58:39,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:58:39,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:58:39,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:58:39,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:58:39,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:58:39,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:58:39,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:58:39,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:58:39,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:58:39,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:58:39,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:58:39,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:58:39,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:58:39,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:58:39,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:58:39,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:58:39,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:58:39,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:58:39,638 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:58:39,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2021-02-19 17:58:39,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acae90e18/8072bcd11b1b4dc498aff6f27bdb72b8/FLAG2f3d5a162 [2021-02-19 17:58:40,405 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:58:40,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina5f.c [2021-02-19 17:58:40,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acae90e18/8072bcd11b1b4dc498aff6f27bdb72b8/FLAG2f3d5a162 [2021-02-19 17:58:40,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acae90e18/8072bcd11b1b4dc498aff6f27bdb72b8 [2021-02-19 17:58:40,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:58:40,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:58:40,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:40,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:58:40,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:58:40,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:40" (1/1) ... [2021-02-19 17:58:40,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a93f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:40, skipping insertion in model container [2021-02-19 17:58:40,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:40" (1/1) ... [2021-02-19 17:58:40,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:58:40,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:58:41,009 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/sina5f.c[589,602] [2021-02-19 17:58:41,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:41,046 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:58:41,061 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/sina5f.c[589,602] [2021-02-19 17:58:41,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:41,093 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:58:41,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:41 WrapperNode [2021-02-19 17:58:41,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:41,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:58:41,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:58:41,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:58:41,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:41" (1/1) ... [2021-02-19 17:58:41,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:41" (1/1) ... [2021-02-19 17:58:41,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:41" (1/1) ... [2021-02-19 17:58:41,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:41" (1/1) ... [2021-02-19 17:58:41,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:41" (1/1) ... [2021-02-19 17:58:41,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:41" (1/1) ... [2021-02-19 17:58:41,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:41" (1/1) ... [2021-02-19 17:58:41,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:58:41,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:58:41,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:58:41,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:58:41,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:41" (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 [2021-02-19 17:58:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:58:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:58:41,285 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:58:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 17:58:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:58:41,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:58:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:58:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:58:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:58:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:58:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 17:58:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:58:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:58:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:58:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:58:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:58:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:58:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:58:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:58:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:58:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:58:41,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:58:41,963 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:58:41,964 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-19 17:58:41,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:41 BoogieIcfgContainer [2021-02-19 17:58:41,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:58:41,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:58:41,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:58:41,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:58:41,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:58:40" (1/3) ... [2021-02-19 17:58:41,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644bbd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:41, skipping insertion in model container [2021-02-19 17:58:41,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:41" (2/3) ... [2021-02-19 17:58:41,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644bbd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:41, skipping insertion in model container [2021-02-19 17:58:41,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:41" (3/3) ... [2021-02-19 17:58:41,976 INFO L111 eAbstractionObserver]: Analyzing ICFG sina5f.c [2021-02-19 17:58:41,983 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:58:41,989 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:58:42,013 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:58:42,042 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:58:42,043 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:58:42,043 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:58:42,043 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:58:42,043 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:58:42,043 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:58:42,044 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:58:42,044 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:58:42,063 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-02-19 17:58:42,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 17:58:42,070 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:42,071 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] [2021-02-19 17:58:42,072 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:42,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:42,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1145952651, now seen corresponding path program 1 times [2021-02-19 17:58:42,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:42,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271166416] [2021-02-19 17:58:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:42,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:42,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:42,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:58:42,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271166416] [2021-02-19 17:58:42,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:42,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:58:42,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565916200] [2021-02-19 17:58:42,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:58:42,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:42,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:58:42,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:58:42,470 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2021-02-19 17:58:42,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:42,788 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2021-02-19 17:58:42,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:58:42,792 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2021-02-19 17:58:42,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:42,801 INFO L225 Difference]: With dead ends: 76 [2021-02-19 17:58:42,802 INFO L226 Difference]: Without dead ends: 38 [2021-02-19 17:58:42,806 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 [2021-02-19 17:58:42,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-19 17:58:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-19 17:58:42,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-19 17:58:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-02-19 17:58:42,859 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2021-02-19 17:58:42,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:42,860 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-02-19 17:58:42,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:58:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2021-02-19 17:58:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 17:58:42,862 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:42,862 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] [2021-02-19 17:58:42,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:58:42,863 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:42,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:42,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1573045881, now seen corresponding path program 1 times [2021-02-19 17:58:42,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:42,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366315180] [2021-02-19 17:58:42,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:42,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:42,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:42,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:43,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:43,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:43,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:43,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:43,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:43,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:58:43,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366315180] [2021-02-19 17:58:43,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:43,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 17:58:43,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224809124] [2021-02-19 17:58:43,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 17:58:43,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:43,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 17:58:43,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:58:43,107 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2021-02-19 17:58:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:43,368 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2021-02-19 17:58:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:58:43,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2021-02-19 17:58:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:43,372 INFO L225 Difference]: With dead ends: 75 [2021-02-19 17:58:43,372 INFO L226 Difference]: Without dead ends: 52 [2021-02-19 17:58:43,373 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 [2021-02-19 17:58:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-19 17:58:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2021-02-19 17:58:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-19 17:58:43,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-02-19 17:58:43,388 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2021-02-19 17:58:43,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:43,389 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-02-19 17:58:43,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 17:58:43,389 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-02-19 17:58:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-19 17:58:43,391 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:43,391 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:58:43,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:58:43,391 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:43,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:43,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1009849533, now seen corresponding path program 1 times [2021-02-19 17:58:43,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:43,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116815464] [2021-02-19 17:58:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:43,495 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:43,551 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:43,592 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:58:43,592 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:58:43,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:58:43,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:58:43 BoogieIcfgContainer [2021-02-19 17:58:43,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:58:43,656 INFO L168 Benchmark]: Toolchain (without parser) took 2861.75 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 124.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:43,657 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:43,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.12 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:43,658 INFO L168 Benchmark]: Boogie Preprocessor took 51.50 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:43,659 INFO L168 Benchmark]: RCFGBuilder took 815.42 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 128.2 MB in the end (delta: -14.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:43,660 INFO L168 Benchmark]: TraceAbstraction took 1686.88 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 124.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:43,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.12 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.50 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 815.42 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 128.2 MB in the end (delta: -14.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1686.88 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 124.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.5 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] long long *a = malloc(sizeof(long long)*N); [L30] long long *b = malloc(sizeof(long long)*N); [L32] sum[0] = 0 [L33] i=0 VAL [\old(N)=0, a={-1:0}, b={11:0}, i=0, malloc(sizeof(long long)*N)={11:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={13:0}] [L33] COND TRUE i