/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/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:58:13,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:58:13,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:58:13,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:58:13,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:58:13,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:58:13,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:58:13,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:58:13,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:58:13,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:58:13,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:58:13,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:58:13,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:58:13,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:58:13,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:58:13,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:58:13,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:58:13,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:58:13,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:58:13,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:58:13,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:58:13,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:58:13,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:58:13,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:58:13,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:58:13,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:58:13,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:58:13,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:58:13,160 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 17:58:13,215 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:58:13,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:58:13,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:58:13,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:58:13,220 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:58:13,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:58:13,220 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:58:13,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:58:13,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:58:13,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:58:13,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:58:13,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:58:13,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:58:13,223 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:58:13,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:58:13,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:58:13,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:58:13,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:58:13,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:58:13,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:58:13,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:58:13,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:58:13,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:58:13,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:58:13,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:58:13,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:58:13,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:58:13,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:58:13,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:58:13,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:58:13,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:58:13,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:58:13,673 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:58:13,673 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:58:13,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2021-02-19 17:58:13,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e1ce8b1f/53cdc72ad58a4f82ba5e853a715ffbe8/FLAGb7d60a61f [2021-02-19 17:58:14,430 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:58:14,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modsf.c [2021-02-19 17:58:14,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e1ce8b1f/53cdc72ad58a4f82ba5e853a715ffbe8/FLAGb7d60a61f [2021-02-19 17:58:14,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e1ce8b1f/53cdc72ad58a4f82ba5e853a715ffbe8 [2021-02-19 17:58:14,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:58:14,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:58:14,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:14,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:58:14,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:58:14,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:14" (1/1) ... [2021-02-19 17:58:14,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5fd79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:14, skipping insertion in model container [2021-02-19 17:58:14,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:14" (1/1) ... [2021-02-19 17:58:14,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:58:14,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:58:14,997 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/modsf.c[588,601] [2021-02-19 17:58:15,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:15,028 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:58:15,042 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/modsf.c[588,601] [2021-02-19 17:58:15,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:15,069 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:58:15,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:15 WrapperNode [2021-02-19 17:58:15,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:15,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:58:15,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:58:15,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:58:15,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:15" (1/1) ... [2021-02-19 17:58:15,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:15" (1/1) ... [2021-02-19 17:58:15,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:15" (1/1) ... [2021-02-19 17:58:15,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:15" (1/1) ... [2021-02-19 17:58:15,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:15" (1/1) ... [2021-02-19 17:58:15,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:15" (1/1) ... [2021-02-19 17:58:15,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:15" (1/1) ... [2021-02-19 17:58:15,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:58:15,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:58:15,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:58:15,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:58:15,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:15" (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 17:58:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:58:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:58:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:58:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 17:58:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:58:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:58:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:58:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:58:15,230 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:58:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:58:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 17:58:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:58:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:58:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:58:15,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:58:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:58:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:58:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:58:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:58:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:58:15,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:58:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:58:15,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:58:15,801 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-19 17:58:15,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:15 BoogieIcfgContainer [2021-02-19 17:58:15,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:58:15,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:58:15,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:58:15,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:58:15,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:58:14" (1/3) ... [2021-02-19 17:58:15,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664c134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:15, skipping insertion in model container [2021-02-19 17:58:15,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:15" (2/3) ... [2021-02-19 17:58:15,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664c134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:15, skipping insertion in model container [2021-02-19 17:58:15,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:15" (3/3) ... [2021-02-19 17:58:15,816 INFO L111 eAbstractionObserver]: Analyzing ICFG modsf.c [2021-02-19 17:58:15,823 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:58:15,828 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:58:15,851 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:58:15,894 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:58:15,894 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:58:15,894 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:58:15,894 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:58:15,895 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:58:15,895 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:58:15,895 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:58:15,895 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:58:15,925 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-19 17:58:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 17:58:15,934 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:15,935 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 17:58:15,935 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:15,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1425380239, now seen corresponding path program 1 times [2021-02-19 17:58:15,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:15,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403737891] [2021-02-19 17:58:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:16,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:16,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:16,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,350 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 17:58:16,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403737891] [2021-02-19 17:58:16,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:16,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:58:16,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745998141] [2021-02-19 17:58:16,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:58:16,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:16,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:58:16,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:58:16,374 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2021-02-19 17:58:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:16,487 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2021-02-19 17:58:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:58:16,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-02-19 17:58:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:16,497 INFO L225 Difference]: With dead ends: 70 [2021-02-19 17:58:16,497 INFO L226 Difference]: Without dead ends: 35 [2021-02-19 17:58:16,501 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 17:58:16,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-19 17:58:16,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-02-19 17:58:16,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-19 17:58:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-02-19 17:58:16,543 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2021-02-19 17:58:16,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:16,544 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-02-19 17:58:16,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:58:16,544 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-02-19 17:58:16,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 17:58:16,545 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:16,546 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 17:58:16,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:58:16,546 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:16,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:16,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1281239155, now seen corresponding path program 1 times [2021-02-19 17:58:16,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:16,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708182578] [2021-02-19 17:58:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:16,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:16,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:16,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:16,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:16,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:16,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:16,722 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 17:58:16,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708182578] [2021-02-19 17:58:16,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:16,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 17:58:16,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431929501] [2021-02-19 17:58:16,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 17:58:16,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:16,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 17:58:16,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:58:16,726 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2021-02-19 17:58:16,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:16,926 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2021-02-19 17:58:16,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:58:16,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2021-02-19 17:58:16,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:16,930 INFO L225 Difference]: With dead ends: 67 [2021-02-19 17:58:16,930 INFO L226 Difference]: Without dead ends: 47 [2021-02-19 17:58:16,932 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 17:58:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-19 17:58:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2021-02-19 17:58:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-19 17:58:16,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-02-19 17:58:16,946 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2021-02-19 17:58:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:16,947 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-02-19 17:58:16,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 17:58:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-02-19 17:58:16,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-19 17:58:16,949 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:16,949 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 17:58:16,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:58:16,949 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:16,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:16,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1000164587, now seen corresponding path program 1 times [2021-02-19 17:58:16,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:16,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724244601] [2021-02-19 17:58:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:16,976 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-19 17:58:16,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494666459] [2021-02-19 17:58:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 17:58:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:17,077 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:17,105 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:17,209 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:58:17,209 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:58:17,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-19 17:58:17,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:58:17 BoogieIcfgContainer [2021-02-19 17:58:17,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:58:17,463 INFO L168 Benchmark]: Toolchain (without parser) took 2660.77 ms. Allocated memory was 153.1 MB in the beginning and 208.7 MB in the end (delta: 55.6 MB). Free memory was 129.2 MB in the beginning and 180.4 MB in the end (delta: -51.2 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:17,464 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:17,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.40 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 118.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:17,466 INFO L168 Benchmark]: Boogie Preprocessor took 46.18 ms. Allocated memory is still 153.1 MB. Free memory was 118.0 MB in the beginning and 116.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:17,467 INFO L168 Benchmark]: RCFGBuilder took 684.73 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 133.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:17,468 INFO L168 Benchmark]: TraceAbstraction took 1653.97 ms. Allocated memory was 153.1 MB in the beginning and 208.7 MB in the end (delta: 55.6 MB). Free memory was 133.0 MB in the beginning and 180.4 MB in the end (delta: -47.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:17,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.40 ms. Allocated memory is still 153.1 MB. Free memory was 128.2 MB in the beginning and 118.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.18 ms. Allocated memory is still 153.1 MB. Free memory was 118.0 MB in the beginning and 116.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 684.73 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 133.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 21.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1653.97 ms. Allocated memory was 153.1 MB in the beginning and 208.7 MB in the end (delta: 55.6 MB). Free memory was 133.0 MB in the beginning and 180.4 MB in the end (delta: -47.4 MB). Peak memory consumption was 7.6 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)=15, 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); [L31] sum[0] = 0 [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L32] COND TRUE i