/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 0.2.0-b8ad66e [2020-10-24 01:05:37,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:05:37,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:05:37,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 01:05:37,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 01:05:37,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 01:05:37,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 01:05:37,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 01:05:37,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 01:05:37,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 01:05:37,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 01:05:37,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 01:05:37,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:05:37,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:05:37,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:05:37,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:05:37,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:05:37,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:05:37,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:05:37,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:05:37,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:05:37,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:05:37,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:05:37,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:05:37,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 01:05:37,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:05:37,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:05:37,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:05:37,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 01:05:37,461 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:05:37,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:05:37,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:05:37,463 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:05:37,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:05:37,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:05:37,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:05:37,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:05:37,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:05:37,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:05:37,465 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:05:37,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:05:37,466 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:05:37,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:05:37,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:05:37,466 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:05:37,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:05:37,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:05:37,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:05:37,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:05:37,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:05:37,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:05:37,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:05:37,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:05:37,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:05:37,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:05:37,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:05:37,901 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:05:37,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_union_cast-1.i [2020-10-24 01:05:38,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18bac3ab/6fe1a0992c584ec9900166012cf65c5e/FLAGbd15e8d94 [2020-10-24 01:05:38,605 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:05:38,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_union_cast-1.i [2020-10-24 01:05:38,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18bac3ab/6fe1a0992c584ec9900166012cf65c5e/FLAGbd15e8d94 [2020-10-24 01:05:38,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18bac3ab/6fe1a0992c584ec9900166012cf65c5e [2020-10-24 01:05:39,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:05:39,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:05:39,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:05:39,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:05:39,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:05:39,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:05:38" (1/1) ... [2020-10-24 01:05:39,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7015976b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:39, skipping insertion in model container [2020-10-24 01:05:39,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:05:38" (1/1) ... [2020-10-24 01:05:39,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:05:39,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:05:39,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:05:39,211 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:05:39,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:05:39,242 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:05:39,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:39 WrapperNode [2020-10-24 01:05:39,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:05:39,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:05:39,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:05:39,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:05:39,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:39" (1/1) ... [2020-10-24 01:05:39,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:39" (1/1) ... [2020-10-24 01:05:39,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:39" (1/1) ... [2020-10-24 01:05:39,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:39" (1/1) ... [2020-10-24 01:05:39,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:39" (1/1) ... [2020-10-24 01:05:39,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:39" (1/1) ... [2020-10-24 01:05:39,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:39" (1/1) ... [2020-10-24 01:05:39,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:05:39,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:05:39,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:05:39,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:05:39,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:39" (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 [2020-10-24 01:05:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:05:39,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:05:39,380 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:05:39,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 01:05:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:05:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:05:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:05:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 01:05:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 01:05:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:05:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:05:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 01:05:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:05:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 01:05:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:05:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:05:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:05:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:05:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:05:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:05:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 01:05:39,833 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:05:39,834 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-24 01:05:39,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:05:39 BoogieIcfgContainer [2020-10-24 01:05:39,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:05:39,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:05:39,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:05:39,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:05:39,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:05:38" (1/3) ... [2020-10-24 01:05:39,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426e9e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:05:39, skipping insertion in model container [2020-10-24 01:05:39,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:39" (2/3) ... [2020-10-24 01:05:39,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426e9e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:05:39, skipping insertion in model container [2020-10-24 01:05:39,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:05:39" (3/3) ... [2020-10-24 01:05:39,846 INFO L111 eAbstractionObserver]: Analyzing ICFG test_union_cast-1.i [2020-10-24 01:05:39,859 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:05:39,866 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:05:39,886 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:05:39,949 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:05:39,950 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:05:39,950 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:05:39,950 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:05:39,955 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:05:39,955 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:05:39,955 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:05:39,956 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:05:40,001 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-24 01:05:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-24 01:05:40,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:05:40,022 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] [2020-10-24 01:05:40,022 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:05:40,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:05:40,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1560603539, now seen corresponding path program 1 times [2020-10-24 01:05:40,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:05:40,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612285719] [2020-10-24 01:05:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:05:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:40,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:05:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:05:40,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612285719] [2020-10-24 01:05:40,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:05:40,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 01:05:40,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272908666] [2020-10-24 01:05:40,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:05:40,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:05:40,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:05:40,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:05:40,545 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 7 states. [2020-10-24 01:05:40,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:05:40,724 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-10-24 01:05:40,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 01:05:40,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-24 01:05:40,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:05:40,733 INFO L225 Difference]: With dead ends: 47 [2020-10-24 01:05:40,733 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 01:05:40,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:05:40,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 01:05:40,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 01:05:40,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 01:05:40,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 01:05:40,763 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-24 01:05:40,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:05:40,763 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 01:05:40,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:05:40,763 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 01:05:40,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 01:05:40,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:05:40,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 01:05:41,019 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-24 01:05:41,019 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-24 01:05:41,019 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 01:05:41,020 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 01:05:41,020 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 01:05:41,020 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-24 01:05:41,020 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 01:05:41,020 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 01:05:41,021 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-24 01:05:41,021 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-24 01:05:41,021 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 01:05:41,021 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 01:05:41,021 INFO L270 CegarLoopResult]: 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)|)) [2020-10-24 01:05:41,022 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 01:05:41,022 INFO L277 CegarLoopResult]: At program point L12-4(line 12) the Hoare annotation is: true [2020-10-24 01:05:41,022 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 01:05:41,022 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 01:05:41,022 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 01:05:41,022 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 01:05:41,023 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 01:05:41,023 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 35 41) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-24 01:05:41,023 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 35 41) the Hoare annotation is: true [2020-10-24 01:05:41,023 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 35 41) the Hoare annotation is: true [2020-10-24 01:05:41,024 INFO L270 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (= (select (select |#memory_int| |main_~#var~0.base|) |main_~#var~0.offset|) 10) [2020-10-24 01:05:41,024 INFO L270 CegarLoopResult]: 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)) [2020-10-24 01:05:41,024 INFO L270 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (= (select (select |#memory_int| |main_~#var~0.base|) |main_~#var~0.offset|) 10) [2020-10-24 01:05:41,024 INFO L270 CegarLoopResult]: 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)) [2020-10-24 01:05:41,025 INFO L277 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-10-24 01:05:41,025 INFO L277 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: true [2020-10-24 01:05:41,025 INFO L270 CegarLoopResult]: At program point L36-1(line 36) the Hoare annotation is: (= (select (select |#memory_int| |main_~#var~0.base|) |main_~#var~0.offset|) 10) [2020-10-24 01:05:41,025 INFO L270 CegarLoopResult]: At program point L36-2(line 36) the Hoare annotation is: (= (select (select |#memory_int| |main_~#var~0.base|) |main_~#var~0.offset|) 10) [2020-10-24 01:05:41,026 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 01:05:41,026 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 18) the Hoare annotation is: true [2020-10-24 01:05:41,026 INFO L270 CegarLoopResult]: At program point L14(lines 14 16) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 01:05:41,026 INFO L270 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 01:05:41,026 INFO L270 CegarLoopResult]: At program point L14-2(lines 13 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 01:05:41,027 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 13 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 01:05:41,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:05:41 BoogieIcfgContainer [2020-10-24 01:05:41,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 01:05:41,047 INFO L168 Benchmark]: Toolchain (without parser) took 2041.32 ms. Allocated memory was 163.6 MB in the beginning and 206.6 MB in the end (delta: 43.0 MB). Free memory was 139.7 MB in the beginning and 173.6 MB in the end (delta: -33.9 MB). Peak memory consumption was 53.7 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:41,047 INFO L168 Benchmark]: CDTParser took 1.29 ms. Allocated memory is still 163.6 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 01:05:41,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.64 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 129.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:41,049 INFO L168 Benchmark]: Boogie Preprocessor took 36.07 ms. Allocated memory is still 163.6 MB. Free memory was 129.5 MB in the beginning and 128.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:41,050 INFO L168 Benchmark]: RCFGBuilder took 555.73 ms. Allocated memory is still 163.6 MB. Free memory was 128.2 MB in the beginning and 114.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:41,051 INFO L168 Benchmark]: TraceAbstraction took 1204.74 ms. Allocated memory was 163.6 MB in the beginning and 206.6 MB in the end (delta: 43.0 MB). Free memory was 113.8 MB in the beginning and 173.6 MB in the end (delta: -59.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:41,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.29 ms. Allocated memory is still 163.6 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 227.64 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 129.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.07 ms. Allocated memory is still 163.6 MB. Free memory was 129.5 MB in the beginning and 128.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 555.73 ms. Allocated memory is still 163.6 MB. Free memory was 128.2 MB in the beginning and 114.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1204.74 ms. Allocated memory was 163.6 MB in the beginning and 206.6 MB in the end (delta: 43.0 MB). Free memory was 113.8 MB in the beginning and 173.6 MB in the end (delta: -59.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - 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: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 37 LocationsWithAnnotation, 37 PreInvPairs, 47 NumberOfFragments, 139 HoareAnnotationTreeSize, 37 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 37 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1302 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...