/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 0.2.1-dev-36cd7be [2021-02-23 13:35:22,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:35:22,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:35:22,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:35:22,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:35:22,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:35:22,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:35:22,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:35:22,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:35:22,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:35:22,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:35:22,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:35:22,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:35:22,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:35:22,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:35:22,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:35:22,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:35:22,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:35:22,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:35:22,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:35:22,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:35:22,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:35:22,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:35:22,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:35:22,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:35:22,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:35:22,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:35:22,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:35:22,583 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 [2021-02-23 13:35:22,635 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:35:22,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:35:22,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:35:22,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:35:22,638 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:35:22,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:35:22,639 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:35:22,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:35:22,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:35:22,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:35:22,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:35:22,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:35:22,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:35:22,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:35:22,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:35:22,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:35:22,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:35:22,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:35:22,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:35:22,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:35:22,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:35:22,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:35:22,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:35:22,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:35:22,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:35:22,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:35:22,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:35:22,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:35:22,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:35:23,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:35:23,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:35:23,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:35:23,111 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:35:23,114 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:35:23,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2021-02-23 13:35:23,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea0908fc3/7a80bad60ede445bb176844a9476046f/FLAG6a72cb8c2 [2021-02-23 13:35:23,814 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:35:23,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i [2021-02-23 13:35:23,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea0908fc3/7a80bad60ede445bb176844a9476046f/FLAG6a72cb8c2 [2021-02-23 13:35:24,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea0908fc3/7a80bad60ede445bb176844a9476046f [2021-02-23 13:35:24,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:35:24,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:35:24,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:35:24,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:35:24,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:35:24,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:35:24" (1/1) ... [2021-02-23 13:35:24,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd4b248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:24, skipping insertion in model container [2021-02-23 13:35:24,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:35:24" (1/1) ... [2021-02-23 13:35:24,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:35:24,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:35:24,391 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/1_3.i[285,298] [2021-02-23 13:35:24,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:35:24,451 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:35:24,466 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/1_3.i[285,298] [2021-02-23 13:35:24,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:35:24,488 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:35:24,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:24 WrapperNode [2021-02-23 13:35:24,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:35:24,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:35:24,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:35:24,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:35:24,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:24" (1/1) ... [2021-02-23 13:35:24,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:24" (1/1) ... [2021-02-23 13:35:24,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:24" (1/1) ... [2021-02-23 13:35:24,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:24" (1/1) ... [2021-02-23 13:35:24,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:24" (1/1) ... [2021-02-23 13:35:24,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:24" (1/1) ... [2021-02-23 13:35:24,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:24" (1/1) ... [2021-02-23 13:35:24,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:35:24,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:35:24,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:35:24,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:35:24,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:24" (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 13:35:24,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:35:24,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:35:24,692 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:35:24,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-23 13:35:24,693 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2021-02-23 13:35:24,693 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2021-02-23 13:35:24,693 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2021-02-23 13:35:24,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:35:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:35:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:35:24,694 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:35:24,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:35:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-23 13:35:24,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:35:24,698 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:35:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2021-02-23 13:35:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:35:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:35:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2021-02-23 13:35:24,699 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2021-02-23 13:35:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:35:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:35:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:35:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:35:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:35:24,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:35:25,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:35:25,036 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 13:35:25,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:35:25 BoogieIcfgContainer [2021-02-23 13:35:25,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:35:25,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:35:25,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:35:25,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:35:25,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:35:24" (1/3) ... [2021-02-23 13:35:25,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e2cfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:35:25, skipping insertion in model container [2021-02-23 13:35:25,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:35:24" (2/3) ... [2021-02-23 13:35:25,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e2cfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:35:25, skipping insertion in model container [2021-02-23 13:35:25,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:35:25" (3/3) ... [2021-02-23 13:35:25,051 INFO L111 eAbstractionObserver]: Analyzing ICFG 1_3.i [2021-02-23 13:35:25,060 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:35:25,066 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:35:25,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:35:25,132 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:35:25,133 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:35:25,133 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:35:25,133 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:35:25,133 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:35:25,133 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:35:25,134 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:35:25,134 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:35:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-02-23 13:35:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-23 13:35:25,162 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:35:25,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:35:25,163 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:35:25,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:35:25,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1559218136, now seen corresponding path program 1 times [2021-02-23 13:35:25,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:35:25,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904015193] [2021-02-23 13:35:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:35:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:25,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:25,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:25,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:25,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:25,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:25,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:25,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:25,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:25,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:25,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:35:25,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:25,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:35:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:25,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:25,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:25,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:35:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:25,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:25,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:25,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:25,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:35:25,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:35:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:35:25,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:35:25,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:35:25,838 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 13:35:25,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904015193] [2021-02-23 13:35:25,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:35:25,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 13:35:25,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628640384] [2021-02-23 13:35:25,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 13:35:25,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:35:25,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 13:35:25,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 13:35:25,864 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 9 states. [2021-02-23 13:35:26,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:35:26,289 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2021-02-23 13:35:26,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 13:35:26,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2021-02-23 13:35:26,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:35:26,298 INFO L225 Difference]: With dead ends: 49 [2021-02-23 13:35:26,298 INFO L226 Difference]: Without dead ends: 27 [2021-02-23 13:35:26,302 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 [2021-02-23 13:35:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-23 13:35:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-02-23 13:35:26,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-02-23 13:35:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2021-02-23 13:35:26,348 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 20 [2021-02-23 13:35:26,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:35:26,348 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2021-02-23 13:35:26,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 13:35:26,349 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2021-02-23 13:35:26,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 13:35:26,350 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:35:26,350 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] [2021-02-23 13:35:26,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:35:26,351 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:35:26,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:35:26,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1368237875, now seen corresponding path program 1 times [2021-02-23 13:35:26,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:35:26,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743273739] [2021-02-23 13:35:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:35:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:35:26,381 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:35:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:35:26,404 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:35:26,435 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:35:26,436 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:35:26,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:35:26,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:35:26 BoogieIcfgContainer [2021-02-23 13:35:26,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:35:26,490 INFO L168 Benchmark]: Toolchain (without parser) took 2340.73 ms. Allocated memory was 172.0 MB in the beginning and 212.9 MB in the end (delta: 40.9 MB). Free memory was 153.2 MB in the beginning and 147.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:26,491 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 172.0 MB. Free memory is still 144.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:35:26,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.25 ms. Allocated memory is still 172.0 MB. Free memory was 152.0 MB in the beginning and 142.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:26,495 INFO L168 Benchmark]: Boogie Preprocessor took 36.14 ms. Allocated memory is still 172.0 MB. Free memory was 142.5 MB in the beginning and 141.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:26,496 INFO L168 Benchmark]: RCFGBuilder took 511.49 ms. Allocated memory is still 172.0 MB. Free memory was 141.1 MB in the beginning and 141.3 MB in the end (delta: -234.8 kB). Peak memory consumption was 2.9 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:26,497 INFO L168 Benchmark]: TraceAbstraction took 1445.62 ms. Allocated memory was 172.0 MB in the beginning and 212.9 MB in the end (delta: 40.9 MB). Free memory was 141.0 MB in the beginning and 147.4 MB in the end (delta: -6.4 MB). Peak memory consumption was 34.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:35:26,501 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 172.0 MB. Free memory is still 144.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 326.25 ms. Allocated memory is still 172.0 MB. Free memory was 152.0 MB in the beginning and 142.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.14 ms. Allocated memory is still 172.0 MB. Free memory was 142.5 MB in the beginning and 141.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 511.49 ms. Allocated memory is still 172.0 MB. Free memory was 141.1 MB in the beginning and 141.3 MB in the end (delta: -234.8 kB). Peak memory consumption was 2.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1445.62 ms. Allocated memory was 172.0 MB in the beginning and 212.9 MB in the end (delta: 40.9 MB). Free memory was 141.0 MB in the beginning and 147.4 MB in the end (delta: -6.4 MB). Peak memory consumption was 34.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_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] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 18 SDslu, 84 SDs, 0 SdLazy, 100 SolverSat, 14 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=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1881 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...