/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/trex01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:50:39,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:50:39,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:50:39,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:50:39,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:50:39,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:50:39,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:50:39,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:50:39,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:50:39,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:50:39,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:50:39,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:50:39,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:50:39,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:50:39,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:50:39,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:50:39,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:50:39,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:50:39,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:50:39,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:50:39,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:50:39,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:50:39,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:50:39,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:50:39,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:50:39,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:50:39,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:50:39,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:50:39,620 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:50:39,660 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:50:39,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:50:39,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:50:39,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:50:39,664 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:50:39,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:50:39,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:50:39,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:50:39,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:50:39,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:50:39,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:50:39,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:50:39,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:50:39,666 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:50:39,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:50:39,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:50:39,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:50:39,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:50:39,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:50:39,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:50:39,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:50:39,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:50:39,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:50:39,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:50:39,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:50:39,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:50:39,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:50:39,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:50:39,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:50:39,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:50:40,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:50:40,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:50:40,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:50:40,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:50:40,055 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:50:40,056 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-1.c [2020-07-17 22:50:40,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc343b822/42b8bc3e6b3e4dcdb2a343523a79d01b/FLAG34aa0dfb7 [2020-07-17 22:50:40,618 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:50:40,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-1.c [2020-07-17 22:50:40,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc343b822/42b8bc3e6b3e4dcdb2a343523a79d01b/FLAG34aa0dfb7 [2020-07-17 22:50:40,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc343b822/42b8bc3e6b3e4dcdb2a343523a79d01b [2020-07-17 22:50:40,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:50:40,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:50:40,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:40,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:50:40,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:50:40,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:40" (1/1) ... [2020-07-17 22:50:40,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a96484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:40, skipping insertion in model container [2020-07-17 22:50:40,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:40" (1/1) ... [2020-07-17 22:50:40,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:50:41,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:50:41,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:41,223 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:50:41,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:41,265 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:50:41,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:41 WrapperNode [2020-07-17 22:50:41,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:41,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:50:41,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:50:41,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:50:41,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:41" (1/1) ... [2020-07-17 22:50:41,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:41" (1/1) ... [2020-07-17 22:50:41,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:41" (1/1) ... [2020-07-17 22:50:41,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:41" (1/1) ... [2020-07-17 22:50:41,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:41" (1/1) ... [2020-07-17 22:50:41,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:41" (1/1) ... [2020-07-17 22:50:41,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:41" (1/1) ... [2020-07-17 22:50:41,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:50:41,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:50:41,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:50:41,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:50:41,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:50:41,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:50:41,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:50:41,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:50:41,518 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-17 22:50:41,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:50:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:50:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:50:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-17 22:50:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:50:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-17 22:50:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:50:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:50:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:50:41,910 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:50:41,911 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-17 22:50:41,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:41 BoogieIcfgContainer [2020-07-17 22:50:41,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:50:41,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:50:41,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:50:41,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:50:41,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:50:40" (1/3) ... [2020-07-17 22:50:41,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e253803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:41, skipping insertion in model container [2020-07-17 22:50:41,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:41" (2/3) ... [2020-07-17 22:50:41,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e253803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:41, skipping insertion in model container [2020-07-17 22:50:41,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:41" (3/3) ... [2020-07-17 22:50:41,931 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-1.c [2020-07-17 22:50:41,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:50:41,950 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:50:41,967 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:50:41,994 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:50:41,994 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:50:41,995 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:50:41,995 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:50:41,995 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:50:41,995 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:50:41,996 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:50:41,996 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:50:42,016 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-17 22:50:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-17 22:50:42,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:42,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:42,026 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:42,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:42,032 INFO L82 PathProgramCache]: Analyzing trace with hash -355556993, now seen corresponding path program 1 times [2020-07-17 22:50:42,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:42,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695187558] [2020-07-17 22:50:42,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:42,227 INFO L280 TraceCheckUtils]: 0: Hoare triple {31#true} assume true; {31#true} is VALID [2020-07-17 22:50:42,228 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {31#true} {31#true} #68#return; {31#true} is VALID [2020-07-17 22:50:42,230 INFO L263 TraceCheckUtils]: 0: Hoare triple {31#true} call ULTIMATE.init(); {31#true} is VALID [2020-07-17 22:50:42,231 INFO L280 TraceCheckUtils]: 1: Hoare triple {31#true} assume true; {31#true} is VALID [2020-07-17 22:50:42,231 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {31#true} {31#true} #68#return; {31#true} is VALID [2020-07-17 22:50:42,232 INFO L263 TraceCheckUtils]: 3: Hoare triple {31#true} call #t~ret6 := main(); {31#true} is VALID [2020-07-17 22:50:42,232 INFO L280 TraceCheckUtils]: 4: Hoare triple {31#true} ~c~1 := #t~nondet5;havoc #t~nondet5; {31#true} is VALID [2020-07-17 22:50:42,233 INFO L280 TraceCheckUtils]: 5: Hoare triple {31#true} assume !(0 != ~c~1 % 256); {31#true} is VALID [2020-07-17 22:50:42,233 INFO L263 TraceCheckUtils]: 6: Hoare triple {31#true} call f(2); {31#true} is VALID [2020-07-17 22:50:42,234 INFO L280 TraceCheckUtils]: 7: Hoare triple {31#true} ~d := #in~d;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~x~0 := #t~nondet0;havoc #t~nondet0;assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~y~0 := #t~nondet1;havoc #t~nondet1;assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;~k~0 := #t~nondet2;havoc #t~nondet2;~z~0 := 1; {31#true} is VALID [2020-07-17 22:50:42,234 INFO L280 TraceCheckUtils]: 8: Hoare triple {31#true} assume !!(~k~0 <= 1073741823); {31#true} is VALID [2020-07-17 22:50:42,236 INFO L280 TraceCheckUtils]: 9: Hoare triple {31#true} assume !true; {32#false} is VALID [2020-07-17 22:50:42,236 INFO L263 TraceCheckUtils]: 10: Hoare triple {32#false} call __VERIFIER_assert((if ~z~0 >= 2 then 1 else 0)); {32#false} is VALID [2020-07-17 22:50:42,237 INFO L280 TraceCheckUtils]: 11: Hoare triple {32#false} ~cond := #in~cond; {32#false} is VALID [2020-07-17 22:50:42,237 INFO L280 TraceCheckUtils]: 12: Hoare triple {32#false} assume 0 == ~cond; {32#false} is VALID [2020-07-17 22:50:42,237 INFO L280 TraceCheckUtils]: 13: Hoare triple {32#false} assume !false; {32#false} is VALID [2020-07-17 22:50:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:50:42,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695187558] [2020-07-17 22:50:42,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:50:42,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 22:50:42,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140093591] [2020-07-17 22:50:42,249 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-17 22:50:42,253 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:50:42,257 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-17 22:50:42,300 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:42,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 22:50:42,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:50:42,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 22:50:42,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 22:50:42,313 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-07-17 22:50:42,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:42,419 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2020-07-17 22:50:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 22:50:42,420 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-17 22:50:42,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:50:42,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:50:42,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2020-07-17 22:50:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:50:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2020-07-17 22:50:42,439 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 58 transitions. [2020-07-17 22:50:42,616 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:42,629 INFO L225 Difference]: With dead ends: 45 [2020-07-17 22:50:42,629 INFO L226 Difference]: Without dead ends: 16 [2020-07-17 22:50:42,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 22:50:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-17 22:50:42,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-17 22:50:42,688 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:50:42,689 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand 16 states. [2020-07-17 22:50:42,689 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-17 22:50:42,690 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-17 22:50:42,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:42,694 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-07-17 22:50:42,694 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-17 22:50:42,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:42,695 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:42,695 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-17 22:50:42,695 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-17 22:50:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:42,699 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-07-17 22:50:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-17 22:50:42,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:42,700 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:42,700 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:50:42,700 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:50:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-17 22:50:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-07-17 22:50:42,705 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2020-07-17 22:50:42,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:50:42,706 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-07-17 22:50:42,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 22:50:42,706 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-17 22:50:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-17 22:50:42,707 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:42,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:42,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:50:42,708 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:42,709 INFO L82 PathProgramCache]: Analyzing trace with hash -359251077, now seen corresponding path program 1 times [2020-07-17 22:50:42,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:42,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885691448] [2020-07-17 22:50:42,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:50:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:50:42,784 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:50:42,784 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:50:42,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:50:42,813 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:50:42,813 WARN L170 areAnnotationChecker]: fENTRY has no Hoare annotation [2020-07-17 22:50:42,813 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:50:42,814 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:50:42,814 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:50:42,814 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-17 22:50:42,814 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:50:42,814 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-17 22:50:42,814 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-17 22:50:42,815 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:50:42,815 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:50:42,815 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-17 22:50:42,815 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-17 22:50:42,815 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:50:42,815 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:50:42,816 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-17 22:50:42,816 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-17 22:50:42,816 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-17 22:50:42,816 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-17 22:50:42,816 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:50:42,816 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-17 22:50:42,816 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-17 22:50:42,817 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-17 22:50:42,817 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-17 22:50:42,817 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-17 22:50:42,817 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-17 22:50:42,817 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-17 22:50:42,818 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-17 22:50:42,818 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-17 22:50:42,818 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-17 22:50:42,818 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-17 22:50:42,818 WARN L170 areAnnotationChecker]: L38-1 has no Hoare annotation [2020-07-17 22:50:42,818 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:50:42,819 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-17 22:50:42,819 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-17 22:50:42,819 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-17 22:50:42,819 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:50:42,819 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-17 22:50:42,819 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-17 22:50:42,820 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:50:42,820 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-17 22:50:42,820 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:50:42,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:50:42 BoogieIcfgContainer [2020-07-17 22:50:42,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:50:42,828 INFO L168 Benchmark]: Toolchain (without parser) took 1855.66 ms. Allocated memory was 146.3 MB in the beginning and 205.5 MB in the end (delta: 59.2 MB). Free memory was 104.6 MB in the beginning and 114.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:42,829 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 22:50:42,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.65 ms. Allocated memory is still 146.3 MB. Free memory was 104.2 MB in the beginning and 93.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:42,831 INFO L168 Benchmark]: Boogie Preprocessor took 172.15 ms. Allocated memory was 146.3 MB in the beginning and 205.5 MB in the end (delta: 59.2 MB). Free memory was 93.8 MB in the beginning and 184.3 MB in the end (delta: -90.5 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:42,832 INFO L168 Benchmark]: RCFGBuilder took 481.29 ms. Allocated memory is still 205.5 MB. Free memory was 184.3 MB in the beginning and 164.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:42,833 INFO L168 Benchmark]: TraceAbstraction took 901.41 ms. Allocated memory is still 205.5 MB. Free memory was 164.9 MB in the beginning and 114.0 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:42,837 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.65 ms. Allocated memory is still 146.3 MB. Free memory was 104.2 MB in the beginning and 93.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 172.15 ms. Allocated memory was 146.3 MB in the beginning and 205.5 MB in the end (delta: 59.2 MB). Free memory was 93.8 MB in the beginning and 184.3 MB in the end (delta: -90.5 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.29 ms. Allocated memory is still 205.5 MB. Free memory was 184.3 MB in the beginning and 164.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 901.41 ms. Allocated memory is still 205.5 MB. Free memory was 164.9 MB in the beginning and 114.0 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L34] _Bool c = __VERIFIER_nondet_bool(); [L35] COND FALSE !(\read(c)) VAL [c=0] [L38] CALL f(2) VAL [\old(d)=2] [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; [L13] int x = __VERIFIER_nondet_int(), y = __VERIFIER_nondet_int(), k = __VERIFIER_nondet_int(), z = 1; VAL [\old(d)=2, d=2, k=0, x=1, y=0, z=1] [L14] COND FALSE !(!(k <= 1073741823)) VAL [\old(d)=2, d=2, k=0, x=1, y=0, z=1] [L17] COND FALSE !(z < k) VAL [\old(d)=2, d=2, k=0, x=1, y=0, z=1] [L18] CALL __VERIFIER_assert(z>=2) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 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...