/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_union_cast-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:05:52,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:05:52,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:05:52,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:05:52,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:05:52,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:05:52,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:05:52,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:05:52,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:05:52,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:05:52,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:05:52,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:05:52,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:05:52,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:05:52,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:05:52,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:05:52,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 23:05:52,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:05:52,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:05:52,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:05:52,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:05:52,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:05:52,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:05:52,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:05:52,840 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:05:52,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:05:52,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:05:52,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:05:52,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:05:52,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:05:52,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:05:52,842 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:05:52,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:05:52,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:05:52,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:05:52,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:05:52,843 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:05:52,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:05:52,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:05:52,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:05:52,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:05:52,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:05:52,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:05:52,845 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:05:53,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:05:53,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:05:53,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:05:53,244 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:05:53,245 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:05:53,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_union_cast-1.i [2021-02-23 23:05:53,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beed87448/774321d4a8f94b61b24b3f7638a7c1a5/FLAG1b1cce0f3 [2021-02-23 23:05:53,908 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:05:53,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_union_cast-1.i [2021-02-23 23:05:53,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beed87448/774321d4a8f94b61b24b3f7638a7c1a5/FLAG1b1cce0f3 [2021-02-23 23:05:54,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/beed87448/774321d4a8f94b61b24b3f7638a7c1a5 [2021-02-23 23:05:54,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:05:54,252 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:05:54,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:54,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:05:54,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:05:54,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:54" (1/1) ... [2021-02-23 23:05:54,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eb240d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:54, skipping insertion in model container [2021-02-23 23:05:54,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:54" (1/1) ... [2021-02-23 23:05:54,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:05:54,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:05:54,465 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_union_cast-1.i[817,830] [2021-02-23 23:05:54,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:54,490 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:05:54,505 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_union_cast-1.i[817,830] [2021-02-23 23:05:54,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:54,528 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:05:54,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:54 WrapperNode [2021-02-23 23:05:54,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:54,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:05:54,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:05:54,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:05:54,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:54" (1/1) ... [2021-02-23 23:05:54,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:54" (1/1) ... [2021-02-23 23:05:54,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:54" (1/1) ... [2021-02-23 23:05:54,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:54" (1/1) ... [2021-02-23 23:05:54,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:54" (1/1) ... [2021-02-23 23:05:54,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:54" (1/1) ... [2021-02-23 23:05:54,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:54" (1/1) ... [2021-02-23 23:05:54,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:05:54,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:05:54,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:05:54,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:05:54,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:54" (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 23:05:54,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:05:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:05:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:05:54,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 23:05:54,689 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:05:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:05:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:05:54,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 23:05:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 23:05:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:05:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:05:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 23:05:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:05:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 23:05:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:05:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:05:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:05:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:05:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:05:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:05:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 23:05:55,098 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:05:55,099 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 23:05:55,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:55 BoogieIcfgContainer [2021-02-23 23:05:55,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:05:55,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:05:55,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:05:55,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:05:55,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:05:54" (1/3) ... [2021-02-23 23:05:55,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3d04c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:55, skipping insertion in model container [2021-02-23 23:05:55,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:54" (2/3) ... [2021-02-23 23:05:55,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3d04c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:55, skipping insertion in model container [2021-02-23 23:05:55,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:55" (3/3) ... [2021-02-23 23:05:55,111 INFO L111 eAbstractionObserver]: Analyzing ICFG test_union_cast-1.i [2021-02-23 23:05:55,118 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:05:55,123 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:05:55,169 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:05:55,195 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:05:55,195 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:05:55,195 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:05:55,196 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:05:55,196 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:05:55,196 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:05:55,196 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:05:55,196 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:05:55,212 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-02-23 23:05:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-23 23:05:55,222 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:55,223 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] [2021-02-23 23:05:55,223 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:55,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:55,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1395890468, now seen corresponding path program 1 times [2021-02-23 23:05:55,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:55,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434495254] [2021-02-23 23:05:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:55,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:55,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:55,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:55,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:55,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:55,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:05:55,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:55,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:05:55,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:55,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:05:55,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:55,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:55,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:55,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:55,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:55,658 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 23:05:55,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434495254] [2021-02-23 23:05:55,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:55,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 23:05:55,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131893432] [2021-02-23 23:05:55,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:05:55,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:55,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:05:55,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:05:55,685 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 7 states. [2021-02-23 23:05:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:55,986 INFO L93 Difference]: Finished difference Result 42 states and 41 transitions. [2021-02-23 23:05:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:05:55,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-02-23 23:05:55,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:55,995 INFO L225 Difference]: With dead ends: 42 [2021-02-23 23:05:55,995 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 23:05:55,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:05:56,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 23:05:56,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 23:05:56,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 23:05:56,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 23:05:56,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-02-23 23:05:56,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:56,027 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 23:05:56,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:05:56,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 23:05:56,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 23:05:56,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:05:56,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 23:05:56,341 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-23 23:05:56,341 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-23 23:05:56,342 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-23 23:05:56,342 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-23 23:05:56,342 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-23 23:05:56,342 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:56,342 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:56,343 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-02-23 23:05:56,343 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-23 23:05:56,343 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-23 23:05:56,343 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-23 23:05:56,344 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= ~CURRENTLY_SAFE~0 |old(~CURRENTLY_SAFE~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-23 23:05:56,344 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-23 23:05:56,344 INFO L192 CegarLoopUtils]: At program point L12-4(line 12) the Hoare annotation is: true [2021-02-23 23:05:56,344 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 23:05:56,345 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 23:05:56,345 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:56,345 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 23:05:56,345 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 23:05:56,346 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 35 41) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-23 23:05:56,346 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 35 41) the Hoare annotation is: true [2021-02-23 23:05:56,346 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 35 41) the Hoare annotation is: true [2021-02-23 23:05:56,346 INFO L185 CegarLoopUtils]: At program point L40(line 40) the Hoare annotation is: (= (select (select |#memory_int| |main_~#var~0.base|) |main_~#var~0.offset|) 10) [2021-02-23 23:05:56,347 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (and (= (select (select |#memory_int| |main_~#var~0.base|) |main_~#var~0.offset|) 10) (= |main_#t~mem3| 10)) [2021-02-23 23:05:56,347 INFO L185 CegarLoopUtils]: At program point L38(line 38) the Hoare annotation is: (= (select (select |#memory_int| |main_~#var~0.base|) |main_~#var~0.offset|) 10) [2021-02-23 23:05:56,348 INFO L185 CegarLoopUtils]: At program point L39-1(line 39) the Hoare annotation is: (and (= (select (select |#memory_int| |main_~#var~0.base|) |main_~#var~0.offset|) 10) (= |main_#t~mem3| 10)) [2021-02-23 23:05:56,348 INFO L192 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: true [2021-02-23 23:05:56,348 INFO L192 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: true [2021-02-23 23:05:56,348 INFO L185 CegarLoopUtils]: At program point L36-1(line 36) the Hoare annotation is: (= (select (select |#memory_int| |main_~#var~0.base|) |main_~#var~0.offset|) 10) [2021-02-23 23:05:56,349 INFO L185 CegarLoopUtils]: At program point L36-2(line 36) the Hoare annotation is: (= (select (select |#memory_int| |main_~#var~0.base|) |main_~#var~0.offset|) 10) [2021-02-23 23:05:56,352 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 23:05:56,352 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 13 18) the Hoare annotation is: true [2021-02-23 23:05:56,353 INFO L185 CegarLoopUtils]: At program point L14(lines 14 16) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 23:05:56,353 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 23:05:56,353 INFO L185 CegarLoopUtils]: At program point L14-2(lines 13 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 23:05:56,353 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 13 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 23:05:56,354 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 23:05:56,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:05:56 BoogieIcfgContainer [2021-02-23 23:05:56,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:05:56,398 INFO L168 Benchmark]: Toolchain (without parser) took 2156.52 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 126.7 MB in the beginning and 144.2 MB in the end (delta: -17.5 MB). Peak memory consumption was 53.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:56,399 INFO L168 Benchmark]: CDTParser took 0.92 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:05:56,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.52 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:56,403 INFO L168 Benchmark]: Boogie Preprocessor took 35.80 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 114.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:56,404 INFO L168 Benchmark]: RCFGBuilder took 534.03 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 100.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:56,405 INFO L168 Benchmark]: TraceAbstraction took 1293.01 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 99.5 MB in the beginning and 144.2 MB in the end (delta: -44.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:56,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.52 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.80 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 114.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 534.03 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 100.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1293.01 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 99.5 MB in the beginning and 144.2 MB in the end (delta: -44.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 35]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 12 SDslu, 79 SDs, 0 SdLazy, 46 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 32 LocationsWithAnnotation, 32 PreInvPairs, 42 NumberOfFragments, 136 HoareAnnotationTreeSize, 32 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 32 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 correct! Received shutdown request...