/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:27:31,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:27:31,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:27:31,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:27:31,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:27:31,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:27:31,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:27:31,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:27:31,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:27:31,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:27:31,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:27:31,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:27:31,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:27:31,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:27:31,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:27:31,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:27:31,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:27:31,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:27:31,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:27:31,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:27:31,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:27:31,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:27:31,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:27:31,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:27:31,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:27:31,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:27:31,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:27:31,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:27:31,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:27:31,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:27:31,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:27:31,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:27:31,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:27:31,869 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:27:31,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:27:31,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:27:31,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:27:31,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:27:31,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:27:31,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:27:31,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:27:31,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:27:31,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:27:31,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:27:31,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:27:31,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:27:31,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:27:31,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:27:31,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:27:31,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:27:31,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:27:31,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:27:31,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:27:31,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:27:31,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:27:31,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:27:31,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:27:31,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:27:31,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:27:32,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:27:32,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:27:32,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:27:32,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:27:32,334 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:27:32,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-11-06 22:27:32,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4225cf9a6/e2e3145214e043129ab53c2b6eaec2f2/FLAG01ac7080b [2020-11-06 22:27:32,990 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:27:32,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i [2020-11-06 22:27:32,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4225cf9a6/e2e3145214e043129ab53c2b6eaec2f2/FLAG01ac7080b [2020-11-06 22:27:33,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4225cf9a6/e2e3145214e043129ab53c2b6eaec2f2 [2020-11-06 22:27:33,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:27:33,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:27:33,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:27:33,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:27:33,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:27:33,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:33" (1/1) ... [2020-11-06 22:27:33,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67643883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:33, skipping insertion in model container [2020-11-06 22:27:33,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:33" (1/1) ... [2020-11-06 22:27:33,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:27:33,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:27:33,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:27:33,590 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:27:33,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:27:33,625 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:27:33,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:33 WrapperNode [2020-11-06 22:27:33,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:27:33,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:27:33,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:27:33,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:27:33,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:33" (1/1) ... [2020-11-06 22:27:33,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:33" (1/1) ... [2020-11-06 22:27:33,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:33" (1/1) ... [2020-11-06 22:27:33,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:33" (1/1) ... [2020-11-06 22:27:33,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:33" (1/1) ... [2020-11-06 22:27:33,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:33" (1/1) ... [2020-11-06 22:27:33,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:33" (1/1) ... [2020-11-06 22:27:33,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:27:33,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:27:33,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:27:33,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:27:33,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:33" (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 [2020-11-06 22:27:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:27:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:27:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:27:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-11-06 22:27:33,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-11-06 22:27:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-11-06 22:27:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-11-06 22:27:33,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:27:33,736 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:27:33,736 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:27:33,736 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:27:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:27:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-11-06 22:27:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:27:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:27:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-11-06 22:27:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:27:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:27:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-11-06 22:27:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-11-06 22:27:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:27:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:27:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:27:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:27:33,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:27:33,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:27:33,991 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:27:33,992 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 22:27:33,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:33 BoogieIcfgContainer [2020-11-06 22:27:33,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:27:33,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:27:33,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:27:34,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:27:34,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:33" (1/3) ... [2020-11-06 22:27:34,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1249346c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:34, skipping insertion in model container [2020-11-06 22:27:34,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:33" (2/3) ... [2020-11-06 22:27:34,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1249346c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:34, skipping insertion in model container [2020-11-06 22:27:34,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:33" (3/3) ... [2020-11-06 22:27:34,005 INFO L111 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-11-06 22:27:34,023 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:27:34,027 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:27:34,041 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:27:34,090 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:27:34,090 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:27:34,090 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:27:34,090 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:27:34,090 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:27:34,091 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:27:34,091 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:27:34,091 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:27:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-11-06 22:27:34,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 22:27:34,116 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:34,117 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] [2020-11-06 22:27:34,117 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:34,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:34,124 INFO L82 PathProgramCache]: Analyzing trace with hash 497426882, now seen corresponding path program 1 times [2020-11-06 22:27:34,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:34,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740142007] [2020-11-06 22:27:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:34,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:27:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:34,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:27:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:34,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:27:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:27:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:27:34,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740142007] [2020-11-06 22:27:34,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:27:34,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 22:27:34,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360477033] [2020-11-06 22:27:34,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:27:34,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:27:34,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:27:34,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:27:34,717 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 9 states. [2020-11-06 22:27:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:27:35,095 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-11-06 22:27:35,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:27:35,096 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-11-06 22:27:35,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:27:35,104 INFO L225 Difference]: With dead ends: 54 [2020-11-06 22:27:35,104 INFO L226 Difference]: Without dead ends: 28 [2020-11-06 22:27:35,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:27:35,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-06 22:27:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-06 22:27:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-06 22:27:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2020-11-06 22:27:35,153 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 21 [2020-11-06 22:27:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:27:35,153 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2020-11-06 22:27:35,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:27:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-11-06 22:27:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 22:27:35,155 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:27:35,155 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-06 22:27:35,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:27:35,156 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:27:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:27:35,157 INFO L82 PathProgramCache]: Analyzing trace with hash 464597277, now seen corresponding path program 1 times [2020-11-06 22:27:35,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:27:35,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407834839] [2020-11-06 22:27:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:27:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:27:35,202 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:27:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:27:35,255 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:27:35,307 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:27:35,307 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:27:35,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:27:35,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:27:35 BoogieIcfgContainer [2020-11-06 22:27:35,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:27:35,367 INFO L168 Benchmark]: Toolchain (without parser) took 2018.80 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 85.2 MB in the end (delta: 40.4 MB). Peak memory consumption was 41.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:35,367 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:27:35,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 115.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:35,369 INFO L168 Benchmark]: Boogie Preprocessor took 32.66 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:35,371 INFO L168 Benchmark]: RCFGBuilder took 333.02 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 99.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:35,372 INFO L168 Benchmark]: TraceAbstraction took 1367.55 ms. Allocated memory is still 151.0 MB. Free memory was 98.7 MB in the beginning and 85.2 MB in the end (delta: 13.5 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:27:35,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 268.27 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 115.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.66 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 114.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 333.02 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 99.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1367.55 ms. Allocated memory is still 151.0 MB. Free memory was 98.7 MB in the beginning and 85.2 MB in the end (delta: 13.5 MB). Peak memory consumption was 15.0 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; VAL [ptr1={0:0}] [L53] CALL, EXPR getPtr() [L39] CALL, EXPR getrr() [L32] rr * r = (rr *)malloc(sizeof *r); [L33] r -> state = 0 [L34] return r; VAL [\result={-1:0}, malloc(sizeof *r)={-1:0}, r={-1:0}] [L39] RET, EXPR getrr() VAL [getrr()={-1:0}] [L39] rr * r = getrr(); [L40] r -> state = 1 [L41] return r; VAL [\result={-1:0}, r={-1:0}] [L53] RET, EXPR getPtr() VAL [getPtr()={-1:0}, ptr1={0:0}] [L53] ptr1 = getPtr() [L54] CALL freePtr(ptr1) VAL [ptr={-1:0}] [L46] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L46] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L47] ptr -> state = 2 VAL [ptr={-1:0}, ptr={-1:0}] [L54] RET freePtr(ptr1) VAL [ptr1={-1:0}] [L56] CALL freePtr(ptr1) VAL [ptr={-1:0}] [L46] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [L46] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [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, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 18 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 2000 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 incorrect! Received shutdown request...