/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/loops/terminator_01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:26:15,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:26:15,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:26:15,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 16:26:15,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:26:15,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:26:15,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:26:15,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:26:15,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:26:15,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:26:15,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:26:15,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:26:15,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:26:15,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:26:15,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:26:15,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:26:15,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:26:15,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:26:15,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:26:15,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:26:15,227 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 [2021-02-21 16:26:15,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:26:15,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:26:15,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:26:15,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:26:15,257 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:26:15,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:26:15,257 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:26:15,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:26:15,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:26:15,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:26:15,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:26:15,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:26:15,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:26:15,259 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:26:15,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:26:15,259 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:26:15,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:26:15,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:26:15,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:26:15,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:26:15,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:26:15,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:26:15,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:26:15,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:26:15,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:26:15,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:26:15,262 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:26:15,262 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:26:15,262 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:26:15,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:26:15,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:26:15,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:26:15,648 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:26:15,648 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:26:15,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_01.c [2021-02-21 16:26:15,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc61d5f30/1d9392594f3d44d9a6e9c8c301d6b064/FLAG8067c819a [2021-02-21 16:26:16,303 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:26:16,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c [2021-02-21 16:26:16,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc61d5f30/1d9392594f3d44d9a6e9c8c301d6b064/FLAG8067c819a [2021-02-21 16:26:16,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc61d5f30/1d9392594f3d44d9a6e9c8c301d6b064 [2021-02-21 16:26:16,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:26:16,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:26:16,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:26:16,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:26:16,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:26:16,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:16" (1/1) ... [2021-02-21 16:26:16,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9bfe0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:16, skipping insertion in model container [2021-02-21 16:26:16,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:16" (1/1) ... [2021-02-21 16:26:16,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:26:16,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:26:16,976 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c[325,338] [2021-02-21 16:26:16,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:26:17,001 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:26:17,019 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c[325,338] [2021-02-21 16:26:17,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:26:17,041 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:26:17,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:17 WrapperNode [2021-02-21 16:26:17,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:26:17,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:26:17,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:26:17,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:26:17,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:17" (1/1) ... [2021-02-21 16:26:17,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:17" (1/1) ... [2021-02-21 16:26:17,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:17" (1/1) ... [2021-02-21 16:26:17,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:17" (1/1) ... [2021-02-21 16:26:17,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:17" (1/1) ... [2021-02-21 16:26:17,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:17" (1/1) ... [2021-02-21 16:26:17,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:17" (1/1) ... [2021-02-21 16:26:17,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:26:17,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:26:17,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:26:17,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:26:17,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:17" (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 [2021-02-21 16:26:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:26:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:26:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:26:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:26:17,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:26:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:26:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:26:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:26:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:26:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:26:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:26:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:26:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:26:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:26:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:26:17,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:26:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:26:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:26:17,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:26:17,403 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 16:26:17,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:17 BoogieIcfgContainer [2021-02-21 16:26:17,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:26:17,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:26:17,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:26:17,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:26:17,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:26:16" (1/3) ... [2021-02-21 16:26:17,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739f32d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:17, skipping insertion in model container [2021-02-21 16:26:17,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:17" (2/3) ... [2021-02-21 16:26:17,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739f32d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:17, skipping insertion in model container [2021-02-21 16:26:17,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:17" (3/3) ... [2021-02-21 16:26:17,414 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2021-02-21 16:26:17,422 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:26:17,427 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:26:17,447 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:26:17,506 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:26:17,507 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:26:17,507 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:26:17,507 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:26:17,507 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:26:17,508 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:26:17,508 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:26:17,510 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:26:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-02-21 16:26:17,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 16:26:17,564 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:17,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:17,569 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:17,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1035305623, now seen corresponding path program 1 times [2021-02-21 16:26:17,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:17,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085255391] [2021-02-21 16:26:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:17,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:17,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:17,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:17,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:17,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:26:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:17,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:17,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:26:17,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085255391] [2021-02-21 16:26:17,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:26:17,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:26:17,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380300746] [2021-02-21 16:26:17,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:26:17,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:26:17,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:26:17,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:26:17,994 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2021-02-21 16:26:18,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:26:18,055 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-02-21 16:26:18,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:26:18,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-02-21 16:26:18,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:26:18,064 INFO L225 Difference]: With dead ends: 32 [2021-02-21 16:26:18,065 INFO L226 Difference]: Without dead ends: 13 [2021-02-21 16:26:18,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:26:18,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-02-21 16:26:18,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-02-21 16:26:18,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-02-21 16:26:18,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-02-21 16:26:18,114 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-02-21 16:26:18,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:26:18,114 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-02-21 16:26:18,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:26:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-02-21 16:26:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-02-21 16:26:18,117 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:18,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:18,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:26:18,117 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:18,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2042096758, now seen corresponding path program 1 times [2021-02-21 16:26:18,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:18,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672688157] [2021-02-21 16:26:18,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:26:18,204 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:26:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:26:18,242 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:26:18,267 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:26:18,268 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:26:18,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:26:18,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:26:18 BoogieIcfgContainer [2021-02-21 16:26:18,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:26:18,298 INFO L168 Benchmark]: Toolchain (without parser) took 1603.02 ms. Allocated memory is still 152.0 MB. Free memory was 126.6 MB in the beginning and 110.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:18,299 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:26:18,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.41 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 116.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:18,301 INFO L168 Benchmark]: Boogie Preprocessor took 39.53 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:18,302 INFO L168 Benchmark]: RCFGBuilder took 319.59 ms. Allocated memory is still 152.0 MB. Free memory was 114.6 MB in the beginning and 101.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:18,303 INFO L168 Benchmark]: TraceAbstraction took 889.45 ms. Allocated memory is still 152.0 MB. Free memory was 101.3 MB in the beginning and 110.3 MB in the end (delta: -9.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:26:18,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.41 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 116.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.53 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 319.59 ms. Allocated memory is still 152.0 MB. Free memory was 114.6 MB in the beginning and 101.8 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 889.45 ms. Allocated memory is still 152.0 MB. Free memory was 101.3 MB in the beginning and 110.3 MB in the end (delta: -9.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x=__VERIFIER_nondet_int(); [L15] int x=__VERIFIER_nondet_int(); [L16] int *p = &x; VAL [p={3:0}, x={3:0}] [L18] EXPR \read(x) VAL [\read(x)=100, p={3:0}, x={3:0}] [L18] COND FALSE !(x<100) [L21] CALL __VERIFIER_assert(0) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 5 SDslu, 4 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 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...