/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test28-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:06:57,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:06:57,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:06:57,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:06:57,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:06:57,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:06:57,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:06:57,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:06:57,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:06:57,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:06:57,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:06:57,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:06:57,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:06:57,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:06:57,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:06:57,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:06:57,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:06:58,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:06:58,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:06:58,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:06:58,008 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 18:06:58,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:06:58,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:06:58,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:06:58,035 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:06:58,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:06:58,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:06:58,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:06:58,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:06:58,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:06:58,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:06:58,038 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:06:58,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:06:58,039 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:06:58,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:06:58,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:06:58,040 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:06:58,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:06:58,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:06:58,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:06:58,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:06:58,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:06:58,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:06:58,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:06:58,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:06:58,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:06:58,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:06:58,431 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:06:58,432 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:06:58,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test28-1.c [2021-02-23 18:06:58,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4605c092/3aeaf4ecc65b4a58b7dffc8a9b573b9d/FLAG533a93a0f [2021-02-23 18:06:59,012 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:06:59,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test28-1.c [2021-02-23 18:06:59,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4605c092/3aeaf4ecc65b4a58b7dffc8a9b573b9d/FLAG533a93a0f [2021-02-23 18:06:59,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4605c092/3aeaf4ecc65b4a58b7dffc8a9b573b9d [2021-02-23 18:06:59,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:06:59,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:06:59,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:06:59,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:06:59,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:06:59,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:06:59" (1/1) ... [2021-02-23 18:06:59,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be695c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:59, skipping insertion in model container [2021-02-23 18:06:59,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:06:59" (1/1) ... [2021-02-23 18:06:59,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:06:59,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:06:59,617 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/test28-1.c[576,589] [2021-02-23 18:06:59,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:06:59,640 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:06:59,655 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/test28-1.c[576,589] [2021-02-23 18:06:59,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:06:59,672 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:06:59,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:59 WrapperNode [2021-02-23 18:06:59,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:06:59,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:06:59,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:06:59,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:06:59,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:59" (1/1) ... [2021-02-23 18:06:59,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:59" (1/1) ... [2021-02-23 18:06:59,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:59" (1/1) ... [2021-02-23 18:06:59,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:59" (1/1) ... [2021-02-23 18:06:59,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:59" (1/1) ... [2021-02-23 18:06:59,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:59" (1/1) ... [2021-02-23 18:06:59,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:59" (1/1) ... [2021-02-23 18:06:59,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:06:59,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:06:59,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:06:59,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:06:59,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:59" (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 18:06:59,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:06:59,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:06:59,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:06:59,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:06:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:06:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:06:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:06:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:06:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:06:59,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:06:59,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:06:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:06:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:06:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:06:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:06:59,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:07:00,163 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:07:00,166 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 18:07:00,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:07:00 BoogieIcfgContainer [2021-02-23 18:07:00,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:07:00,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:07:00,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:07:00,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:07:00,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:06:59" (1/3) ... [2021-02-23 18:07:00,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ce1d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:07:00, skipping insertion in model container [2021-02-23 18:07:00,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:06:59" (2/3) ... [2021-02-23 18:07:00,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ce1d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:07:00, skipping insertion in model container [2021-02-23 18:07:00,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:07:00" (3/3) ... [2021-02-23 18:07:00,191 INFO L111 eAbstractionObserver]: Analyzing ICFG test28-1.c [2021-02-23 18:07:00,208 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:07:00,218 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:07:00,243 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:07:00,271 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:07:00,271 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:07:00,271 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:07:00,272 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:07:00,272 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:07:00,272 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:07:00,272 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:07:00,272 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:07:00,290 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-23 18:07:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-23 18:07:00,301 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:07:00,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:07:00,302 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:07:00,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:07:00,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1684913090, now seen corresponding path program 1 times [2021-02-23 18:07:00,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:07:00,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515182569] [2021-02-23 18:07:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:07:00,421 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:07:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:07:00,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:00,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:07:00,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:00,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 18:07:00,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:00,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:07:00,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:07:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:07:00,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:00,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:07:00,792 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 18:07:00,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515182569] [2021-02-23 18:07:00,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:07:00,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:07:00,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831773289] [2021-02-23 18:07:00,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:07:00,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:07:00,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:07:00,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:07:00,824 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2021-02-23 18:07:01,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:07:01,020 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2021-02-23 18:07:01,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:07:01,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2021-02-23 18:07:01,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:07:01,033 INFO L225 Difference]: With dead ends: 60 [2021-02-23 18:07:01,035 INFO L226 Difference]: Without dead ends: 34 [2021-02-23 18:07:01,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:07:01,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-02-23 18:07:01,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-02-23 18:07:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-23 18:07:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-02-23 18:07:01,110 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 29 [2021-02-23 18:07:01,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:07:01,111 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-02-23 18:07:01,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:07:01,112 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-02-23 18:07:01,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-23 18:07:01,113 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:07:01,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:07:01,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:07:01,115 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:07:01,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:07:01,117 INFO L82 PathProgramCache]: Analyzing trace with hash 536824223, now seen corresponding path program 1 times [2021-02-23 18:07:01,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:07:01,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619562808] [2021-02-23 18:07:01,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:07:01,136 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:07:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:07:01,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:07:01,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:07:01,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:07:01,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:07:01,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:07:01,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:07:01,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 18:07:01,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:07:01,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:07:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:07:01,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:07:01,435 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 18:07:01,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619562808] [2021-02-23 18:07:01,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:07:01,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 18:07:01,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990276113] [2021-02-23 18:07:01,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 18:07:01,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:07:01,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 18:07:01,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:07:01,439 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 9 states. [2021-02-23 18:07:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:07:01,617 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-02-23 18:07:01,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 18:07:01,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2021-02-23 18:07:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:07:01,619 INFO L225 Difference]: With dead ends: 43 [2021-02-23 18:07:01,620 INFO L226 Difference]: Without dead ends: 33 [2021-02-23 18:07:01,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-02-23 18:07:01,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-23 18:07:01,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-02-23 18:07:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-23 18:07:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-02-23 18:07:01,631 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2021-02-23 18:07:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:07:01,632 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-02-23 18:07:01,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 18:07:01,632 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-02-23 18:07:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-23 18:07:01,633 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:07:01,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:07:01,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:07:01,634 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:07:01,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:07:01,635 INFO L82 PathProgramCache]: Analyzing trace with hash -2041206465, now seen corresponding path program 1 times [2021-02-23 18:07:01,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:07:01,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791638263] [2021-02-23 18:07:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:07:01,637 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:07:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:07:01,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:07:01,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:07:01,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:07:01,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:07:01,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:07:01,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:07:01,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:07:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:07:01,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:07:01,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:07:01,760 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 18:07:01,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791638263] [2021-02-23 18:07:01,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:07:01,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:07:01,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996902884] [2021-02-23 18:07:01,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:07:01,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:07:01,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:07:01,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:07:01,764 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 7 states. [2021-02-23 18:07:01,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:07:01,962 INFO L93 Difference]: Finished difference Result 46 states and 45 transitions. [2021-02-23 18:07:01,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 18:07:01,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2021-02-23 18:07:01,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:07:01,963 INFO L225 Difference]: With dead ends: 46 [2021-02-23 18:07:01,964 INFO L226 Difference]: Without dead ends: 32 [2021-02-23 18:07:01,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-02-23 18:07:01,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-23 18:07:01,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-02-23 18:07:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-23 18:07:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2021-02-23 18:07:01,973 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 31 [2021-02-23 18:07:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:07:01,974 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2021-02-23 18:07:01,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:07:01,974 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2021-02-23 18:07:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-23 18:07:01,975 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:07:01,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:07:01,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:07:01,976 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:07:01,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:07:01,976 INFO L82 PathProgramCache]: Analyzing trace with hash -143124065, now seen corresponding path program 1 times [2021-02-23 18:07:01,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:07:01,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463543327] [2021-02-23 18:07:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:07:01,979 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:07:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:07:01,999 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:07:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:07:02,035 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:07:02,077 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:07:02,077 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:07:02,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:07:02,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:07:02 BoogieIcfgContainer [2021-02-23 18:07:02,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:07:02,100 INFO L168 Benchmark]: Toolchain (without parser) took 2709.15 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 106.5 MB in the beginning and 155.2 MB in the end (delta: -48.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:07:02,101 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:07:02,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.24 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 96.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:07:02,102 INFO L168 Benchmark]: Boogie Preprocessor took 32.35 ms. Allocated memory is still 151.0 MB. Free memory was 96.1 MB in the beginning and 94.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:07:02,103 INFO L168 Benchmark]: RCFGBuilder took 465.13 ms. Allocated memory is still 151.0 MB. Free memory was 94.5 MB in the beginning and 120.0 MB in the end (delta: -25.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:07:02,103 INFO L168 Benchmark]: TraceAbstraction took 1920.72 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 119.7 MB in the beginning and 155.2 MB in the end (delta: -35.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:07:02,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.24 ms. Allocated memory is still 151.0 MB. Free memory was 105.5 MB in the beginning and 96.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.35 ms. Allocated memory is still 151.0 MB. Free memory was 96.1 MB in the beginning and 94.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 465.13 ms. Allocated memory is still 151.0 MB. Free memory was 94.5 MB in the beginning and 120.0 MB in the end (delta: -25.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1920.72 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 119.7 MB in the beginning and 155.2 MB in the end (delta: -35.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] struct dummy d1, d2; [L15] int n = __VERIFIER_nondet_int(); [L16] EXPR n ? &d1 : &d2 [L16] struct dummy *pd = n ? &d1 : &d2; [L17] COND TRUE pd == &d2 [L18] pd->a = 0 [L22] pd == &d2 && d2.b != 0 [L22] EXPR d2.b [L22] pd == &d2 && d2.b != 0 [L22] COND TRUE pd == &d2 && d2.b != 0 [L28] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 97 SDslu, 225 SDs, 0 SdLazy, 184 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...