/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/trex03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:52:57,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:52:57,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:52:57,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:52:57,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:52:57,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:52:57,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:52:57,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:52:57,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:52:57,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:52:57,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:52:57,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:52:57,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:52:57,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:52:57,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:52:57,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:52:57,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:52:57,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:52:57,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:52:57,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:52:57,784 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 13:52:57,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:52:57,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:52:57,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:52:57,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:52:57,842 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:52:57,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:52:57,843 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:52:57,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:52:57,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:52:57,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:52:57,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:52:57,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:52:57,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:52:57,845 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:52:57,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:52:57,846 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:52:57,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:52:57,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:52:57,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:52:57,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:52:57,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:52:57,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:52:57,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:52:57,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:52:57,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:52:57,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:52:57,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:52:57,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:52:57,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:52:58,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:52:58,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:52:58,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:52:58,251 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:52:58,254 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:52:58,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-1.c [2021-02-23 13:52:58,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4d50e296/d74e199102974bea891a20c4c554fbbd/FLAG3d532388e [2021-02-23 13:52:58,966 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:52:58,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c [2021-02-23 13:52:58,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4d50e296/d74e199102974bea891a20c4c554fbbd/FLAG3d532388e [2021-02-23 13:52:59,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4d50e296/d74e199102974bea891a20c4c554fbbd [2021-02-23 13:52:59,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:52:59,380 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:52:59,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:59,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:52:59,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:52:59,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:59" (1/1) ... [2021-02-23 13:52:59,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bd9772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59, skipping insertion in model container [2021-02-23 13:52:59,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:59" (1/1) ... [2021-02-23 13:52:59,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:52:59,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:52:59,591 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/trex03-1.c[320,333] [2021-02-23 13:52:59,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:59,614 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:52:59,625 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/trex03-1.c[320,333] [2021-02-23 13:52:59,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:59,647 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:52:59,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59 WrapperNode [2021-02-23 13:52:59,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:59,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:52:59,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:52:59,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:52:59,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ... [2021-02-23 13:52:59,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ... [2021-02-23 13:52:59,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ... [2021-02-23 13:52:59,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ... [2021-02-23 13:52:59,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ... [2021-02-23 13:52:59,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ... [2021-02-23 13:52:59,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ... [2021-02-23 13:52:59,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:52:59,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:52:59,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:52:59,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:52:59,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:52:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:52:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:52:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:52:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:52:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:52:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:52:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:52:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:52:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:52:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:52:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-23 13:52:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 13:52:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:52:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:52:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:52:59,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:52:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:52:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:52:59,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:53:00,056 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:53:00,056 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 13:53:00,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:53:00 BoogieIcfgContainer [2021-02-23 13:53:00,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:53:00,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:53:00,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:53:00,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:53:00,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:52:59" (1/3) ... [2021-02-23 13:53:00,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cbc5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:53:00, skipping insertion in model container [2021-02-23 13:53:00,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:59" (2/3) ... [2021-02-23 13:53:00,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25cbc5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:53:00, skipping insertion in model container [2021-02-23 13:53:00,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:53:00" (3/3) ... [2021-02-23 13:53:00,069 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2021-02-23 13:53:00,085 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:53:00,096 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:53:00,144 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:53:00,236 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:53:00,236 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:53:00,236 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:53:00,236 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:53:00,237 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:53:00,237 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:53:00,237 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:53:00,237 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:53:00,254 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2021-02-23 13:53:00,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-23 13:53:00,260 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:53:00,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:53:00,261 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:53:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:53:00,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1016564801, now seen corresponding path program 1 times [2021-02-23 13:53:00,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:53:00,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457985910] [2021-02-23 13:53:00,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:53:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:00,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:00,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:00,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:00,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:00,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:53:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:00,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:00,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:00,679 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 13:53:00,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457985910] [2021-02-23 13:53:00,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:53:00,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:53:00,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777017434] [2021-02-23 13:53:00,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:53:00,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:53:00,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:53:00,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:53:00,706 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2021-02-23 13:53:00,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:53:00,769 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-02-23 13:53:00,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:53:00,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-02-23 13:53:00,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:53:00,779 INFO L225 Difference]: With dead ends: 34 [2021-02-23 13:53:00,779 INFO L226 Difference]: Without dead ends: 15 [2021-02-23 13:53:00,783 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 [2021-02-23 13:53:00,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-02-23 13:53:00,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-02-23 13:53:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-02-23 13:53:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-02-23 13:53:00,823 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2021-02-23 13:53:00,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:53:00,824 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-02-23 13:53:00,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:53:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-02-23 13:53:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-23 13:53:00,825 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:53:00,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:53:00,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:53:00,825 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:53:00,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:53:00,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1031341137, now seen corresponding path program 1 times [2021-02-23 13:53:00,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:53:00,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578419878] [2021-02-23 13:53:00,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:53:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:53:00,866 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:53:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:53:00,912 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:53:00,939 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:53:00,939 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:53:00,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:53:00,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:53:00 BoogieIcfgContainer [2021-02-23 13:53:00,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:53:00,971 INFO L168 Benchmark]: Toolchain (without parser) took 1604.48 ms. Allocated memory is still 181.4 MB. Free memory was 156.2 MB in the beginning and 136.2 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:00,972 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 181.4 MB. Free memory is still 153.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:53:00,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.68 ms. Allocated memory is still 181.4 MB. Free memory was 155.1 MB in the beginning and 145.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:00,974 INFO L168 Benchmark]: Boogie Preprocessor took 33.14 ms. Allocated memory is still 181.4 MB. Free memory was 145.8 MB in the beginning and 144.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:00,975 INFO L168 Benchmark]: RCFGBuilder took 376.20 ms. Allocated memory is still 181.4 MB. Free memory was 144.2 MB in the beginning and 130.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:00,976 INFO L168 Benchmark]: TraceAbstraction took 908.09 ms. Allocated memory is still 181.4 MB. Free memory was 129.7 MB in the beginning and 136.2 MB in the end (delta: -6.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:53:00,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 181.4 MB. Free memory is still 153.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 263.68 ms. Allocated memory is still 181.4 MB. Free memory was 155.1 MB in the beginning and 145.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.14 ms. Allocated memory is still 181.4 MB. Free memory was 145.8 MB in the beginning and 144.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 376.20 ms. Allocated memory is still 181.4 MB. Free memory was 144.2 MB in the beginning and 130.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 908.09 ms. Allocated memory is still 181.4 MB. Free memory was 129.7 MB in the beginning and 136.2 MB in the end (delta: -6.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L18] unsigned int d1=1, d2=1, d3=1; [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L21] COND FALSE !(x1>0 && x2>0 && x3>0) VAL [c1=4294967299, c2=4294967301, d1=1, d2=1, d3=1, x1=4294967297, x2=0, x3=0] [L30] CALL __VERIFIER_assert(x1==0 && x2==0 && x3==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, 25 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: 22 SDtfs, 15 SDslu, 3 SDs, 0 SdLazy, 4 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=22occurred 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, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 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...