/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/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:26:13,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:26:13,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:26:13,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 16:26:13,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:26:13,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:26:13,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:26:13,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:26:13,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:26:13,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:26:13,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:26:13,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:26:13,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:26:13,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:26:13,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:26:13,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:26:13,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:26:13,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:26:13,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:26:13,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:26:13,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 16:26:13,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:26:13,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:26:13,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:26:13,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:26:13,804 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:26:13,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:26:13,804 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:26:13,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:26:13,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:26:13,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:26:13,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:26:13,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:26:13,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:26:13,807 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:26:13,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:26:13,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:26:13,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:26:13,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:26:13,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:26:13,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:26:13,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:26:13,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:26:13,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:26:13,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:26:13,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:26:13,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:26:13,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:26:13,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:26:13,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:26:14,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:26:14,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:26:14,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:26:14,238 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:26:14,239 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:26:14,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2021-02-21 16:26:14,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e2a8c11/aa7556590eea4e1388657f3e0fa0e95b/FLAG87c25ddb9 [2021-02-21 16:26:14,828 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:26:14,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2021-02-21 16:26:14,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e2a8c11/aa7556590eea4e1388657f3e0fa0e95b/FLAG87c25ddb9 [2021-02-21 16:26:15,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e2a8c11/aa7556590eea4e1388657f3e0fa0e95b [2021-02-21 16:26:15,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:26:15,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:26:15,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:26:15,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:26:15,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:26:15,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:15" (1/1) ... [2021-02-21 16:26:15,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f867b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:15, skipping insertion in model container [2021-02-21 16:26:15,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:15" (1/1) ... [2021-02-21 16:26:15,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:26:15,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:26:15,407 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c[363,376] [2021-02-21 16:26:15,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:26:15,436 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:26:15,449 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c[363,376] [2021-02-21 16:26:15,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:26:15,476 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:26:15,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:15 WrapperNode [2021-02-21 16:26:15,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:26:15,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:26:15,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:26:15,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:26:15,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:15" (1/1) ... [2021-02-21 16:26:15,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:15" (1/1) ... [2021-02-21 16:26:15,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:15" (1/1) ... [2021-02-21 16:26:15,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:15" (1/1) ... [2021-02-21 16:26:15,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:15" (1/1) ... [2021-02-21 16:26:15,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:15" (1/1) ... [2021-02-21 16:26:15,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:15" (1/1) ... [2021-02-21 16:26:15,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:26:15,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:26:15,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:26:15,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:26:15,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:15" (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 [2021-02-21 16:26:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:26:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:26:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:26:15,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:26:15,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:26:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:26:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:26:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:26:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:26:15,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:26:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:26:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-21 16:26:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:26:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:26:15,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:26:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:26:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:26:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:26:15,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:26:15,958 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:26:15,959 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 16:26:15,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:15 BoogieIcfgContainer [2021-02-21 16:26:15,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:26:15,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:26:15,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:26:15,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:26:15,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:26:15" (1/3) ... [2021-02-21 16:26:15,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6994d6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:15, skipping insertion in model container [2021-02-21 16:26:15,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:15" (2/3) ... [2021-02-21 16:26:15,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6994d6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:15, skipping insertion in model container [2021-02-21 16:26:15,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:15" (3/3) ... [2021-02-21 16:26:15,983 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2021-02-21 16:26:16,001 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:26:16,012 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:26:16,033 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:26:16,063 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:26:16,063 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:26:16,063 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:26:16,064 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:26:16,064 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:26:16,064 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:26:16,064 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:26:16,064 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:26:16,082 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2021-02-21 16:26:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-21 16:26:16,088 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:16,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:16,090 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:16,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:16,097 INFO L82 PathProgramCache]: Analyzing trace with hash 955945954, now seen corresponding path program 1 times [2021-02-21 16:26:16,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:16,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535011820] [2021-02-21 16:26:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:16,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:16,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:16,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:16,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:16,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:16,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:16,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:16,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:16,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:26:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:16,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:16,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:26:16,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535011820] [2021-02-21 16:26:16,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:26:16,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:26:16,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461738144] [2021-02-21 16:26:16,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:26:16,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:26:16,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:26:16,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:26:16,569 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2021-02-21 16:26:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:26:16,834 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2021-02-21 16:26:16,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:26:16,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2021-02-21 16:26:16,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:26:16,852 INFO L225 Difference]: With dead ends: 71 [2021-02-21 16:26:16,852 INFO L226 Difference]: Without dead ends: 35 [2021-02-21 16:26:16,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:26:16,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-21 16:26:16,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2021-02-21 16:26:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-21 16:26:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-02-21 16:26:16,920 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2021-02-21 16:26:16,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:26:16,921 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-02-21 16:26:16,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:26:16,921 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-02-21 16:26:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 16:26:16,924 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:16,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:16,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:26:16,925 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:16,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:16,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1073067556, now seen corresponding path program 1 times [2021-02-21 16:26:16,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:16,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053029631] [2021-02-21 16:26:16,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:26:17,079 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:26:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:26:17,144 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:26:17,180 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:26:17,180 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:26:17,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:26:17,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:26:17 BoogieIcfgContainer [2021-02-21 16:26:17,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:26:17,264 INFO L168 Benchmark]: Toolchain (without parser) took 2047.54 ms. Allocated memory is still 177.2 MB. Free memory was 151.8 MB in the beginning and 98.7 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:17,266 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 177.2 MB. Free memory is still 147.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:26:17,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.91 ms. Allocated memory is still 177.2 MB. Free memory was 150.8 MB in the beginning and 140.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:17,270 INFO L168 Benchmark]: Boogie Preprocessor took 36.00 ms. Allocated memory is still 177.2 MB. Free memory was 140.8 MB in the beginning and 139.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:17,271 INFO L168 Benchmark]: RCFGBuilder took 449.58 ms. Allocated memory is still 177.2 MB. Free memory was 139.1 MB in the beginning and 158.0 MB in the end (delta: -18.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:17,273 INFO L168 Benchmark]: TraceAbstraction took 1291.79 ms. Allocated memory is still 177.2 MB. Free memory was 157.4 MB in the beginning and 98.7 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:17,281 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 177.2 MB. Free memory is still 147.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.91 ms. Allocated memory is still 177.2 MB. Free memory was 150.8 MB in the beginning and 140.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.00 ms. Allocated memory is still 177.2 MB. Free memory was 140.8 MB in the beginning and 139.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 449.58 ms. Allocated memory is still 177.2 MB. Free memory was 139.1 MB in the beginning and 158.0 MB in the end (delta: -18.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1291.79 ms. Allocated memory is still 177.2 MB. Free memory was 157.4 MB in the beginning and 98.7 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 VAL [A={19:0}, B={13:0}, C={18:0}, i=0, M=1] [L20] COND TRUE i