/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/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:50:32,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:50:32,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:50:32,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:50:32,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:50:32,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:50:32,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:50:32,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:50:32,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:50:32,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:50:32,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:50:32,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:50:32,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:50:32,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:50:32,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:50:32,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:50:32,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:50:32,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:50:32,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:50:32,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:50:32,509 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:50:32,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:50:32,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:50:32,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:50:32,540 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:50:32,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:50:32,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:50:32,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:50:32,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:50:32,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:50:32,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:50:32,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:50:32,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:50:32,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:50:32,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:50:32,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:50:32,545 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:50:32,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:50:32,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:50:32,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:50:32,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:50:32,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:50:32,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:50:32,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:50:33,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:50:33,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:50:33,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:50:33,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:50:33,058 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:50:33,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-11-07 00:50:33,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fc373734/191c5d63d19346b38f6a20a8a06cf1b4/FLAG3c007cac1 [2020-11-07 00:50:33,824 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:50:33,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i [2020-11-07 00:50:33,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fc373734/191c5d63d19346b38f6a20a8a06cf1b4/FLAG3c007cac1 [2020-11-07 00:50:34,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fc373734/191c5d63d19346b38f6a20a8a06cf1b4 [2020-11-07 00:50:34,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:50:34,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:50:34,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:50:34,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:50:34,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:50:34,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:34" (1/1) ... [2020-11-07 00:50:34,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc2eeb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:34, skipping insertion in model container [2020-11-07 00:50:34,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:34" (1/1) ... [2020-11-07 00:50:34,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:50:34,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:50:34,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:50:34,427 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:50:34,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:50:34,466 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:50:34,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:34 WrapperNode [2020-11-07 00:50:34,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:50:34,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:50:34,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:50:34,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:50:34,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:34" (1/1) ... [2020-11-07 00:50:34,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:34" (1/1) ... [2020-11-07 00:50:34,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:34" (1/1) ... [2020-11-07 00:50:34,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:34" (1/1) ... [2020-11-07 00:50:34,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:34" (1/1) ... [2020-11-07 00:50:34,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:34" (1/1) ... [2020-11-07 00:50:34,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:34" (1/1) ... [2020-11-07 00:50:34,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:50:34,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:50:34,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:50:34,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:50:34,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:34" (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 [2020-11-07 00:50:34,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:50:34,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:50:34,597 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:50:34,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-11-07 00:50:34,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-11-07 00:50:34,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-11-07 00:50:34,598 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-11-07 00:50:34,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:50:34,598 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:50:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:50:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:50:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:50:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-11-07 00:50:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 00:50:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 00:50:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-11-07 00:50:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 00:50:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:50:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-11-07 00:50:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-11-07 00:50:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:50:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:50:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:50:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:50:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:50:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:50:35,043 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:50:35,044 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 00:50:35,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:50:35 BoogieIcfgContainer [2020-11-07 00:50:35,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:50:35,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:50:35,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:50:35,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:50:35,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:50:34" (1/3) ... [2020-11-07 00:50:35,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a43a0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:50:35, skipping insertion in model container [2020-11-07 00:50:35,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:34" (2/3) ... [2020-11-07 00:50:35,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a43a0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:50:35, skipping insertion in model container [2020-11-07 00:50:35,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:50:35" (3/3) ... [2020-11-07 00:50:35,060 INFO L111 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-11-07 00:50:35,079 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:50:35,083 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:50:35,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:50:35,138 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:50:35,139 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:50:35,139 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:50:35,139 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:50:35,139 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:50:35,139 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:50:35,139 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:50:35,139 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:50:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-11-07 00:50:35,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-07 00:50:35,184 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:50:35,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:50:35,186 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:50:35,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:50:35,200 INFO L82 PathProgramCache]: Analyzing trace with hash 35508485, now seen corresponding path program 1 times [2020-11-07 00:50:35,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:50:35,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468164828] [2020-11-07 00:50:35,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:50:35,312 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:50:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:35,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:50:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:35,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-07 00:50:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:50:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:50:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:50:35,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468164828] [2020-11-07 00:50:35,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:50:35,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 00:50:35,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062788189] [2020-11-07 00:50:35,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 00:50:35,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:50:35,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 00:50:35,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-11-07 00:50:35,928 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 11 states. [2020-11-07 00:50:36,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:50:36,575 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2020-11-07 00:50:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 00:50:36,577 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-11-07 00:50:36,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:50:36,592 INFO L225 Difference]: With dead ends: 80 [2020-11-07 00:50:36,593 INFO L226 Difference]: Without dead ends: 51 [2020-11-07 00:50:36,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-11-07 00:50:36,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-07 00:50:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-07 00:50:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-07 00:50:36,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 50 transitions. [2020-11-07 00:50:36,650 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 50 transitions. Word has length 42 [2020-11-07 00:50:36,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:50:36,651 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 50 transitions. [2020-11-07 00:50:36,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 00:50:36,651 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 50 transitions. [2020-11-07 00:50:36,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-07 00:50:36,653 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:50:36,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:50:36,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:50:36,654 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:50:36,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:50:36,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1728998611, now seen corresponding path program 1 times [2020-11-07 00:50:36,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:50:36,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508762686] [2020-11-07 00:50:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:50:36,659 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:50:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:50:36,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:50:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:50:36,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:50:36,776 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:50:36,776 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:50:36,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:50:36,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:50:36 BoogieIcfgContainer [2020-11-07 00:50:36,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:50:36,805 INFO L168 Benchmark]: Toolchain (without parser) took 2594.51 ms. Allocated memory is still 159.4 MB. Free memory was 136.6 MB in the beginning and 87.6 MB in the end (delta: 49.0 MB). Peak memory consumption was 49.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:36,809 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 159.4 MB. Free memory was 133.6 MB in the beginning and 133.5 MB in the end (delta: 91.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:50:36,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.96 ms. Allocated memory is still 159.4 MB. Free memory was 135.9 MB in the beginning and 126.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:36,814 INFO L168 Benchmark]: Boogie Preprocessor took 40.80 ms. Allocated memory is still 159.4 MB. Free memory was 126.7 MB in the beginning and 125.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:36,815 INFO L168 Benchmark]: RCFGBuilder took 537.71 ms. Allocated memory is still 159.4 MB. Free memory was 125.0 MB in the beginning and 142.7 MB in the end (delta: -17.7 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:36,818 INFO L168 Benchmark]: TraceAbstraction took 1749.38 ms. Allocated memory is still 159.4 MB. Free memory was 142.2 MB in the beginning and 87.6 MB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:50:36,829 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 159.4 MB. Free memory was 133.6 MB in the beginning and 133.5 MB in the end (delta: 91.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.96 ms. Allocated memory is still 159.4 MB. Free memory was 135.9 MB in the beginning and 126.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.80 ms. Allocated memory is still 159.4 MB. Free memory was 126.7 MB in the beginning and 125.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 537.71 ms. Allocated memory is still 159.4 MB. Free memory was 125.0 MB in the beginning and 142.7 MB in the end (delta: -17.7 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1749.38 ms. Allocated memory is still 159.4 MB. Free memory was 142.2 MB in the beginning and 87.6 MB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L52] rr * ptr1 = 0; [L53] CALL, EXPR getPtr() [L39] CALL, EXPR getrr() [L32] rr * r = (rr *)malloc(sizeof *r); [L33] r -> state = 0 [L34] return r; [L39] RET, EXPR getrr() [L39] rr * r = getrr(); [L40] r -> state = 1 [L41] return r; [L53] RET, EXPR getPtr() [L53] ptr1 = getPtr() [L54] CALL freePtr(ptr1) [L46] EXPR ptr -> state [L46] (ptr -> state == 1) ? (0) : __blast_assert () [L47] ptr -> state = 2 [L54] RET freePtr(ptr1) [L56] CALL freePtr(ptr1) [L46] EXPR ptr -> state [L46] (ptr -> state == 1) ? (0) : __blast_assert () [L46] CALL __blast_assert () [L8] CALL reach_error() [L3] __assert_fail("0", "1_3.i", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 35 SDslu, 187 SDs, 0 SdLazy, 254 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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: 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...