/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-b7b32d2 [2021-02-21 16:26:24,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:26:24,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:26:24,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:26:24,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:26:24,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:26:24,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:26:24,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:26:24,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:26:24,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:26:24,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:26:24,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:26:24,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:26:24,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:26:24,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:26:24,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:26:24,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:26:24,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:26:24,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:26:24,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:26:24,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:26:24,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:26:24,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:26:24,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:26:24,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 16:26:24,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 16:26:24,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 16:26:24,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 16:26:24,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 16:26:24,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 16:26:24,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 16:26:24,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 16:26:24,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 16:26:24,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 16:26:24,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 16:26:24,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 16:26:24,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 16:26:24,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 16:26:24,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:26:24,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:26:24,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:26:24,444 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 16:26:24,480 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:26:24,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:26:24,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:26:24,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:26:24,484 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:26:24,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:26:24,484 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:26:24,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:26:24,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:26:24,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:26:24,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:26:24,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:26:24,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:26:24,487 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:26:24,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:26:24,487 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:26:24,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:26:24,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:26:24,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:26:24,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:26:24,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:26:24,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:26:24,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:26:24,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:26:24,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:26:24,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:26:24,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:26:24,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:26:24,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:26:24,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:26:24,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:26:24,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:26:24,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:26:24,928 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:26:24,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-1.c [2021-02-21 16:26:25,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81253b149/3281d0281f4d48a4aa9200f0c146a159/FLAG18fa6c19d [2021-02-21 16:26:25,639 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:26:25,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c [2021-02-21 16:26:25,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81253b149/3281d0281f4d48a4aa9200f0c146a159/FLAG18fa6c19d [2021-02-21 16:26:26,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81253b149/3281d0281f4d48a4aa9200f0c146a159 [2021-02-21 16:26:26,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:26:26,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:26:26,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:26:26,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:26:26,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:26:26,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:26" (1/1) ... [2021-02-21 16:26:26,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388beaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:26, skipping insertion in model container [2021-02-21 16:26:26,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:26" (1/1) ... [2021-02-21 16:26:26,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:26:26,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:26:26,309 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] [2021-02-21 16:26:26,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:26:26,344 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:26:26,360 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] [2021-02-21 16:26:26,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:26:26,393 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:26:26,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:26 WrapperNode [2021-02-21 16:26:26,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:26:26,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:26:26,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:26:26,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:26:26,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:26" (1/1) ... [2021-02-21 16:26:26,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:26" (1/1) ... [2021-02-21 16:26:26,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:26" (1/1) ... [2021-02-21 16:26:26,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:26" (1/1) ... [2021-02-21 16:26:26,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:26" (1/1) ... [2021-02-21 16:26:26,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:26" (1/1) ... [2021-02-21 16:26:26,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:26" (1/1) ... [2021-02-21 16:26:26,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:26:26,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:26:26,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:26:26,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:26:26,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:26" (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 16:26:26,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:26:26,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:26:26,536 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:26:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:26:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:26:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:26:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:26:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:26:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:26:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:26:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-21 16:26:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-21 16:26:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:26:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:26:26,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:26:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:26:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:26:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:26:26,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:26:26,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:26:26,905 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 16:26:26,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:26 BoogieIcfgContainer [2021-02-21 16:26:26,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:26:26,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:26:26,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:26:26,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:26:26,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:26:26" (1/3) ... [2021-02-21 16:26:26,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2ff862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:26, skipping insertion in model container [2021-02-21 16:26:26,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:26" (2/3) ... [2021-02-21 16:26:26,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2ff862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:26, skipping insertion in model container [2021-02-21 16:26:26,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:26" (3/3) ... [2021-02-21 16:26:26,935 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2021-02-21 16:26:26,953 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:26:26,963 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:26:27,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:26:27,038 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:26:27,038 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:26:27,038 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:26:27,039 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:26:27,039 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:26:27,039 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:26:27,039 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:26:27,040 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:26:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2021-02-21 16:26:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 16:26:27,067 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:27,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:27,068 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:27,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:27,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1016564801, now seen corresponding path program 1 times [2021-02-21 16:26:27,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:27,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588776775] [2021-02-21 16:26:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:27,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:27,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:27,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:27,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:26:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:27,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:27,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:27,363 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 16:26:27,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588776775] [2021-02-21 16:26:27,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:26:27,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:26:27,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147612641] [2021-02-21 16:26:27,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:26:27,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:26:27,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:26:27,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:26:27,404 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2021-02-21 16:26:27,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:26:27,504 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-02-21 16:26:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:26:27,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-02-21 16:26:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:26:27,515 INFO L225 Difference]: With dead ends: 34 [2021-02-21 16:26:27,515 INFO L226 Difference]: Without dead ends: 15 [2021-02-21 16:26:27,519 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 16:26:27,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-02-21 16:26:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-02-21 16:26:27,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-02-21 16:26:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-02-21 16:26:27,575 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2021-02-21 16:26:27,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:26:27,575 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-02-21 16:26:27,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:26:27,576 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-02-21 16:26:27,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 16:26:27,576 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:27,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:27,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:26:27,577 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:27,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1031341137, now seen corresponding path program 1 times [2021-02-21 16:26:27,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:27,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927379071] [2021-02-21 16:26:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:26:27,621 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:26:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:26:27,649 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:26:27,675 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:26:27,676 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:26:27,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:26:27,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:26:27 BoogieIcfgContainer [2021-02-21 16:26:27,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:26:27,705 INFO L168 Benchmark]: Toolchain (without parser) took 1683.50 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 101.2 MB in the end (delta: 24.7 MB). Peak memory consumption was 23.9 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:27,706 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:26:27,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.34 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 115.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:27,708 INFO L168 Benchmark]: Boogie Preprocessor took 40.10 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 113.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:27,709 INFO L168 Benchmark]: RCFGBuilder took 475.35 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 132.2 MB in the end (delta: -18.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:27,710 INFO L168 Benchmark]: TraceAbstraction took 788.06 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 101.2 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:27,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 354.34 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 115.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.10 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 113.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 475.35 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 132.2 MB in the end (delta: -18.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 788.06 ms. Allocated memory is still 151.0 MB. Free memory was 131.6 MB in the beginning and 101.2 MB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. 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: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, 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, 0.1s 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...