/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/sina4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:58:38,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:58:38,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:58:38,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:58:38,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:58:38,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:58:38,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:58:38,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:58:38,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:58:38,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:58:38,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:58:38,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:58:38,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:58:38,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:58:38,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:58:38,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:58:38,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:58:38,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:58:38,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:58:38,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:58:38,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:58:38,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:58:38,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:58:38,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:58:38,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:58:38,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:58:38,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:58:38,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:58:38,962 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 17:58:39,025 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:58:39,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:58:39,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:58:39,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:58:39,030 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:58:39,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:58:39,030 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:58:39,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:58:39,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:58:39,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:58:39,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:58:39,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:58:39,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:58:39,032 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:58:39,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:58:39,033 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:58:39,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:58:39,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:58:39,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:58:39,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:58:39,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:58:39,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:58:39,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:58:39,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:58:39,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:58:39,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:58:39,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:58:39,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:58:39,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:58:39,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:58:39,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:58:39,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:58:39,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:58:39,455 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:58:39,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2021-02-19 17:58:39,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c9f297e/d67fcbeebc2145cd9c2a1c406e28fa69/FLAGd8d5212c2 [2021-02-19 17:58:40,248 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:58:40,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4f.c [2021-02-19 17:58:40,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c9f297e/d67fcbeebc2145cd9c2a1c406e28fa69/FLAGd8d5212c2 [2021-02-19 17:58:40,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c9f297e/d67fcbeebc2145cd9c2a1c406e28fa69 [2021-02-19 17:58:40,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:58:40,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:58:40,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:40,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:58:40,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:58:40,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:40" (1/1) ... [2021-02-19 17:58:40,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a36356 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 17:58:40,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:40" (1/1) ... [2021-02-19 17:58:40,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:58:40,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:58:40,791 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/sina4f.c[589,602] [2021-02-19 17:58:40,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:40,827 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:58:40,842 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/sina4f.c[589,602] [2021-02-19 17:58:40,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:40,873 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:58:40,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:40 WrapperNode [2021-02-19 17:58:40,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:40,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:58:40,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:58:40,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:58:40,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:40" (1/1) ... [2021-02-19 17:58:40,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:40" (1/1) ... [2021-02-19 17:58:40,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:40" (1/1) ... [2021-02-19 17:58:40,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:40" (1/1) ... [2021-02-19 17:58:40,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:40" (1/1) ... [2021-02-19 17:58:40,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:40" (1/1) ... [2021-02-19 17:58:40,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:40" (1/1) ... [2021-02-19 17:58:40,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:58:40,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:58:40,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:58:40,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:58:40,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:40" (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 17:58:41,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:58:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:58:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:58:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 17:58:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:58:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:58:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:58:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:58:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:58:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:58:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 17:58:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:58:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:58:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:58:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:58:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:58:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:58:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:58:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:58:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:58:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:58:41,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:58:41,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:58:41,476 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-19 17:58:41,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:41 BoogieIcfgContainer [2021-02-19 17:58:41,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:58:41,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:58:41,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:58:41,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:58:41,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:58:40" (1/3) ... [2021-02-19 17:58:41,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e037d0d 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 17:58:41,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:40" (2/3) ... [2021-02-19 17:58:41,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e037d0d 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 17:58:41,496 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 17:58:41,497 INFO L111 eAbstractionObserver]: Analyzing ICFG sina4f.c [2021-02-19 17:58:41,519 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:58:41,532 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:58:41,565 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:58:41,620 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:58:41,620 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:58:41,620 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:58:41,621 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:58:41,621 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:58:41,621 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:58:41,621 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:58:41,622 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:58:41,659 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-19 17:58:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 17:58:41,670 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:41,671 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] [2021-02-19 17:58:41,672 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:41,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1425380239, now seen corresponding path program 1 times [2021-02-19 17:58:41,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:41,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192606776] [2021-02-19 17:58:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:42,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:42,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:42,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,249 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 17:58:42,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192606776] [2021-02-19 17:58:42,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:42,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:58:42,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124536695] [2021-02-19 17:58:42,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:58:42,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:42,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:58:42,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:58:42,282 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2021-02-19 17:58:42,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:42,484 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2021-02-19 17:58:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:58:42,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-02-19 17:58:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:42,495 INFO L225 Difference]: With dead ends: 70 [2021-02-19 17:58:42,495 INFO L226 Difference]: Without dead ends: 35 [2021-02-19 17:58:42,499 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 17:58:42,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-19 17:58:42,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-02-19 17:58:42,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-19 17:58:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-02-19 17:58:42,546 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2021-02-19 17:58:42,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:42,547 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-02-19 17:58:42,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:58:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-02-19 17:58:42,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 17:58:42,548 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:42,549 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] [2021-02-19 17:58:42,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:58:42,549 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:42,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:42,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1281239155, now seen corresponding path program 1 times [2021-02-19 17:58:42,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:42,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054612388] [2021-02-19 17:58:42,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:42,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:42,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:42,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:42,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:42,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:42,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:42,765 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 17:58:42,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054612388] [2021-02-19 17:58:42,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:42,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 17:58:42,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343363576] [2021-02-19 17:58:42,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 17:58:42,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:42,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 17:58:42,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:58:42,775 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2021-02-19 17:58:42,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:42,994 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2021-02-19 17:58:42,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:58:42,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2021-02-19 17:58:42,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:42,998 INFO L225 Difference]: With dead ends: 67 [2021-02-19 17:58:42,999 INFO L226 Difference]: Without dead ends: 47 [2021-02-19 17:58:43,000 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 [2021-02-19 17:58:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-19 17:58:43,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2021-02-19 17:58:43,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-19 17:58:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-02-19 17:58:43,016 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2021-02-19 17:58:43,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:43,016 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-02-19 17:58:43,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 17:58:43,017 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-02-19 17:58:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-19 17:58:43,018 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:43,018 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] [2021-02-19 17:58:43,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:58:43,019 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:43,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:43,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1000164587, now seen corresponding path program 1 times [2021-02-19 17:58:43,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:43,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835663722] [2021-02-19 17:58:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:43,086 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:43,149 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:43,184 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:58:43,184 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:58:43,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:58:43,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:58:43 BoogieIcfgContainer [2021-02-19 17:58:43,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:58:43,239 INFO L168 Benchmark]: Toolchain (without parser) took 2649.26 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 127.5 MB in the end (delta: -1.3 MB). Peak memory consumption was 80.2 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:43,240 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:43,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.88 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 114.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:43,242 INFO L168 Benchmark]: Boogie Preprocessor took 56.65 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:43,243 INFO L168 Benchmark]: RCFGBuilder took 548.81 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 126.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:43,243 INFO L168 Benchmark]: TraceAbstraction took 1752.72 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 127.5 MB in the end (delta: -1.0 MB). Peak memory consumption was 80.3 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:43,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.88 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 114.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.65 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 548.81 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 126.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1752.72 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 127.5 MB in the end (delta: -1.0 MB). Peak memory consumption was 80.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] 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={-2:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={4:0}] [L33] COND TRUE i