/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/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:54:11,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:54:11,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:54:11,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:54:11,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:54:11,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:54:11,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:54:11,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:54:11,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:54:11,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:54:11,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:54:11,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:54:11,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:54:11,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:54:11,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:54:11,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:54:11,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:54:11,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:54:11,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:54:11,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:54:11,589 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 [2021-02-23 13:54:11,638 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:54:11,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:54:11,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:54:11,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:54:11,640 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:54:11,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:54:11,641 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:54:11,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:54:11,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:54:11,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:54:11,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:54:11,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:54:11,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:54:11,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:54:11,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:54:11,643 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:54:11,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:54:11,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:54:11,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:54:11,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:54:11,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:54:11,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:54:11,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:54:11,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:54:11,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:54:11,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:54:11,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:54:11,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:54:11,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:54:12,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:54:12,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:54:12,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:54:12,091 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:54:12,092 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:54:12,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2021-02-23 13:54:12,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08985ab3/308c5454d50a42648b90903119332d70/FLAGa4dc72c7d [2021-02-23 13:54:12,807 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:54:12,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2021-02-23 13:54:12,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08985ab3/308c5454d50a42648b90903119332d70/FLAGa4dc72c7d [2021-02-23 13:54:13,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08985ab3/308c5454d50a42648b90903119332d70 [2021-02-23 13:54:13,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:54:13,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:54:13,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:54:13,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:54:13,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:54:13,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:54:13" (1/1) ... [2021-02-23 13:54:13,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10619315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:13, skipping insertion in model container [2021-02-23 13:54:13,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:54:13" (1/1) ... [2021-02-23 13:54:13,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:54:13,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:54:13,367 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i[893,906] [2021-02-23 13:54:13,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:54:13,395 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:54:13,410 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i[893,906] [2021-02-23 13:54:13,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:54:13,432 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:54:13,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:13 WrapperNode [2021-02-23 13:54:13,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:54:13,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:54:13,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:54:13,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:54:13,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:13" (1/1) ... [2021-02-23 13:54:13,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:13" (1/1) ... [2021-02-23 13:54:13,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:13" (1/1) ... [2021-02-23 13:54:13,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:13" (1/1) ... [2021-02-23 13:54:13,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:13" (1/1) ... [2021-02-23 13:54:13,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:13" (1/1) ... [2021-02-23 13:54:13,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:13" (1/1) ... [2021-02-23 13:54:13,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:54:13,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:54:13,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:54:13,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:54:13,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:13" (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 [2021-02-23 13:54:13,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:54:13,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:54:13,609 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:54:13,609 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:54:13,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:54:13,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:54:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:54:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:54:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 13:54:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 13:54:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:54:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:54:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:54:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:54:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:54:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:54:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:54:13,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:54:13,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:54:13,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:54:13,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:54:13,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:54:13,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:54:13,931 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 13:54:13,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:54:13 BoogieIcfgContainer [2021-02-23 13:54:13,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:54:13,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:54:13,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:54:13,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:54:13,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:54:13" (1/3) ... [2021-02-23 13:54:13,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee2b864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:54:13, skipping insertion in model container [2021-02-23 13:54:13,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:13" (2/3) ... [2021-02-23 13:54:13,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee2b864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:54:13, skipping insertion in model container [2021-02-23 13:54:13,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:54:13" (3/3) ... [2021-02-23 13:54:13,946 INFO L111 eAbstractionObserver]: Analyzing ICFG id_trans.i [2021-02-23 13:54:13,957 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:54:13,963 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:54:13,991 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:54:14,025 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:54:14,025 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:54:14,026 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:54:14,026 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:54:14,026 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:54:14,026 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:54:14,026 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:54:14,026 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:54:14,064 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-02-23 13:54:14,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-02-23 13:54:14,080 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:54:14,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:54:14,082 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:54:14,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:54:14,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1515419822, now seen corresponding path program 1 times [2021-02-23 13:54:14,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:54:14,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341245009] [2021-02-23 13:54:14,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:54:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:54:14,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:14,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:54:14,405 WARN L141 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-02-23 13:54:14,406 WARN L147 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size 3 [2021-02-23 13:54:14,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:14,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:54:14,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:14,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:54:14,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:14,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:54:14,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:54:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:54:14,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:14,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:54:14,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:54:14,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341245009] [2021-02-23 13:54:14,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:54:14,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:54:14,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342042878] [2021-02-23 13:54:14,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:54:14,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:54:14,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:54:14,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:54:14,516 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2021-02-23 13:54:14,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:54:14,930 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2021-02-23 13:54:14,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 13:54:14,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-02-23 13:54:14,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:54:14,944 INFO L225 Difference]: With dead ends: 47 [2021-02-23 13:54:14,944 INFO L226 Difference]: Without dead ends: 23 [2021-02-23 13:54:14,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 13:54:14,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-02-23 13:54:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-02-23 13:54:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-02-23 13:54:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-02-23 13:54:15,012 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2021-02-23 13:54:15,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:54:15,013 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-02-23 13:54:15,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:54:15,014 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-02-23 13:54:15,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-23 13:54:15,016 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:54:15,016 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:54:15,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:54:15,017 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:54:15,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:54:15,018 INFO L82 PathProgramCache]: Analyzing trace with hash 607772639, now seen corresponding path program 1 times [2021-02-23 13:54:15,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:54:15,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935907672] [2021-02-23 13:54:15,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:54:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:54:15,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:54:15,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:54:15,155 WARN L141 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size [2021-02-23 13:54:15,157 WARN L147 QuantifierPusher]: treesize reduction 11, result has 21.4 percent of original size 3 [2021-02-23 13:54:15,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:54:15,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:54:15,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:54:15,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:54:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:54:15,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:54:15,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-02-23 13:54:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:54:15,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:54:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:54:15,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935907672] [2021-02-23 13:54:15,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:54:15,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:54:15,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233769543] [2021-02-23 13:54:15,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:54:15,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:54:15,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:54:15,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:54:15,265 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2021-02-23 13:54:15,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:54:15,471 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-02-23 13:54:15,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 13:54:15,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-02-23 13:54:15,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:54:15,473 INFO L225 Difference]: With dead ends: 29 [2021-02-23 13:54:15,474 INFO L226 Difference]: Without dead ends: 27 [2021-02-23 13:54:15,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 13:54:15,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-23 13:54:15,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-02-23 13:54:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-02-23 13:54:15,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-02-23 13:54:15,484 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 17 [2021-02-23 13:54:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:54:15,484 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-02-23 13:54:15,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:54:15,484 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-02-23 13:54:15,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 13:54:15,486 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:54:15,486 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:54:15,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:54:15,486 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:54:15,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:54:15,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1749490943, now seen corresponding path program 1 times [2021-02-23 13:54:15,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:54:15,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891390849] [2021-02-23 13:54:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:54:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:54:15,518 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:54:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:54:15,553 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:54:15,604 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:54:15,604 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:54:15,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:54:15,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:54:15 BoogieIcfgContainer [2021-02-23 13:54:15,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:54:15,652 INFO L168 Benchmark]: Toolchain (without parser) took 2486.63 ms. Allocated memory is still 151.0 MB. Free memory was 105.7 MB in the beginning and 74.4 MB in the end (delta: 31.3 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:54:15,653 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:54:15,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.23 ms. Allocated memory is still 151.0 MB. Free memory was 104.5 MB in the beginning and 94.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:54:15,655 INFO L168 Benchmark]: Boogie Preprocessor took 38.71 ms. Allocated memory is still 151.0 MB. Free memory was 94.8 MB in the beginning and 93.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:54:15,655 INFO L168 Benchmark]: RCFGBuilder took 460.85 ms. Allocated memory is still 151.0 MB. Free memory was 93.3 MB in the beginning and 121.3 MB in the end (delta: -28.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:54:15,656 INFO L168 Benchmark]: TraceAbstraction took 1714.88 ms. Allocated memory is still 151.0 MB. Free memory was 120.9 MB in the beginning and 74.4 MB in the end (delta: 46.5 MB). Peak memory consumption was 48.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:54:15,660 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.23 ms. Allocated memory is still 151.0 MB. Free memory was 104.5 MB in the beginning and 94.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.71 ms. Allocated memory is still 151.0 MB. Free memory was 94.8 MB in the beginning and 93.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 460.85 ms. Allocated memory is still 151.0 MB. Free memory was 93.3 MB in the beginning and 121.3 MB in the end (delta: -28.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1714.88 ms. Allocated memory is still 151.0 MB. Free memory was 120.9 MB in the beginning and 74.4 MB in the end (delta: 46.5 MB). Peak memory consumption was 48.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int idBitLength, material_length, nlen; [L26] int j, k; [L27] nlen = __VERIFIER_nondet_int() [L28] idBitLength = __VERIFIER_nondet_int() [L29] material_length = __VERIFIER_nondet_int() [L30] COND FALSE !(!( nlen == idBitLength / 32 )) [L31] j = 0 VAL [idBitLength=17, j=0, material_length=5, nlen=0] [L31] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=17, j=0, material_length=5, nlen=0] [L32] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L18] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L32] RET __VERIFIER_assert( 0 <= j) VAL [idBitLength=17, j=0, material_length=5, nlen=0] [L33] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L18] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L33] RET __VERIFIER_assert( j < material_length ) VAL [idBitLength=17, j=0, material_length=5, nlen=0] [L34] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L18] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L34] RET __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=17, j=0, material_length=5, nlen=0] [L35] CALL __VERIFIER_assert( j/4 < nlen) VAL [\old(cond)=0] [L18] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 36 SDslu, 54 SDs, 0 SdLazy, 110 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...