/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 0.1.25-8fc6572 [2020-07-10 15:27:51,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 15:27:51,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 15:27:51,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 15:27:51,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 15:27:51,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 15:27:51,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 15:27:51,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 15:27:51,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 15:27:51,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 15:27:51,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 15:27:51,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 15:27:51,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 15:27:51,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 15:27:51,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 15:27:51,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 15:27:51,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 15:27:51,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 15:27:51,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 15:27:51,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 15:27:51,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 15:27:51,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 15:27:51,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 15:27:51,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 15:27:51,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 15:27:51,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 15:27:51,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 15:27:51,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 15:27:51,580 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 [2020-07-10 15:27:51,594 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 15:27:51,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 15:27:51,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 15:27:51,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 15:27:51,596 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 15:27:51,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 15:27:51,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 15:27:51,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 15:27:51,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 15:27:51,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 15:27:51,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 15:27:51,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 15:27:51,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 15:27:51,598 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 15:27:51,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 15:27:51,598 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 15:27:51,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 15:27:51,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 15:27:51,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 15:27:51,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 15:27:51,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 15:27:51,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 15:27:51,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 15:27:51,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 15:27:51,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 15:27:51,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 15:27:51,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 15:27:51,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 15:27:51,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 15:27:51,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 15:27:51,883 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 15:27:51,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 15:27:51,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 15:27:51,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 15:27:51,909 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 15:27:51,910 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-1.c [2020-07-10 15:27:51,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee75a375c/f92c124a54964e589580eee836aed12b/FLAG7bec73bdf [2020-07-10 15:27:52,424 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 15:27:52,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-1.c [2020-07-10 15:27:52,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee75a375c/f92c124a54964e589580eee836aed12b/FLAG7bec73bdf [2020-07-10 15:27:52,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee75a375c/f92c124a54964e589580eee836aed12b [2020-07-10 15:27:52,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 15:27:52,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 15:27:52,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 15:27:52,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 15:27:52,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 15:27:52,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:27:52" (1/1) ... [2020-07-10 15:27:52,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47941ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:52, skipping insertion in model container [2020-07-10 15:27:52,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:27:52" (1/1) ... [2020-07-10 15:27:52,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 15:27:52,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 15:27:53,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:27:53,076 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 15:27:53,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:27:53,111 INFO L208 MainTranslator]: Completed translation [2020-07-10 15:27:53,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:53 WrapperNode [2020-07-10 15:27:53,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 15:27:53,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 15:27:53,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 15:27:53,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 15:27:53,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:53" (1/1) ... [2020-07-10 15:27:53,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:53" (1/1) ... [2020-07-10 15:27:53,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:53" (1/1) ... [2020-07-10 15:27:53,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:53" (1/1) ... [2020-07-10 15:27:53,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:53" (1/1) ... [2020-07-10 15:27:53,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:53" (1/1) ... [2020-07-10 15:27:53,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:53" (1/1) ... [2020-07-10 15:27:53,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 15:27:53,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 15:27:53,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 15:27:53,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 15:27:53,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:53" (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 [2020-07-10 15:27:53,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 15:27:53,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 15:27:53,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 15:27:53,293 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-10 15:27:53,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 15:27:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 15:27:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 15:27:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-10 15:27:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 15:27:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-10 15:27:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 15:27:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 15:27:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 15:27:53,585 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 15:27:53,585 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-10 15:27:53,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:27:53 BoogieIcfgContainer [2020-07-10 15:27:53,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 15:27:53,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 15:27:53,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 15:27:53,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 15:27:53,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 03:27:52" (1/3) ... [2020-07-10 15:27:53,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498f2277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:27:53, skipping insertion in model container [2020-07-10 15:27:53,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:27:53" (2/3) ... [2020-07-10 15:27:53,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498f2277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:27:53, skipping insertion in model container [2020-07-10 15:27:53,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:27:53" (3/3) ... [2020-07-10 15:27:53,599 INFO L109 eAbstractionObserver]: Analyzing ICFG trex01-1.c [2020-07-10 15:27:53,612 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 15:27:53,620 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 15:27:53,637 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 15:27:53,662 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 15:27:53,662 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 15:27:53,663 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 15:27:53,663 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 15:27:53,663 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 15:27:53,663 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 15:27:53,663 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 15:27:53,664 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 15:27:53,685 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-10 15:27:53,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-10 15:27:53,694 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:27:53,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:27:53,696 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:27:53,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:27:53,702 INFO L82 PathProgramCache]: Analyzing trace with hash -355556993, now seen corresponding path program 1 times [2020-07-10 15:27:53,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:27:53,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169477215] [2020-07-10 15:27:53,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:27:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:27:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:27:53,856 INFO L280 TraceCheckUtils]: 0: Hoare triple {31#true} assume true; {31#true} is VALID [2020-07-10 15:27:53,856 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {31#true} {31#true} #68#return; {31#true} is VALID [2020-07-10 15:27:53,859 INFO L263 TraceCheckUtils]: 0: Hoare triple {31#true} call ULTIMATE.init(); {31#true} is VALID [2020-07-10 15:27:53,859 INFO L280 TraceCheckUtils]: 1: Hoare triple {31#true} assume true; {31#true} is VALID [2020-07-10 15:27:53,860 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {31#true} {31#true} #68#return; {31#true} is VALID [2020-07-10 15:27:53,860 INFO L263 TraceCheckUtils]: 3: Hoare triple {31#true} call #t~ret6 := main(); {31#true} is VALID [2020-07-10 15:27:53,860 INFO L280 TraceCheckUtils]: 4: Hoare triple {31#true} ~c~1 := #t~nondet5;havoc #t~nondet5; {31#true} is VALID [2020-07-10 15:27:53,861 INFO L280 TraceCheckUtils]: 5: Hoare triple {31#true} assume !(0 != ~c~1 % 256); {31#true} is VALID [2020-07-10 15:27:53,861 INFO L263 TraceCheckUtils]: 6: Hoare triple {31#true} call f(2); {31#true} is VALID [2020-07-10 15:27:53,862 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 [2020-07-10 15:27:53,862 INFO L280 TraceCheckUtils]: 8: Hoare triple {31#true} assume !!(~k~0 <= 1073741823); {31#true} is VALID [2020-07-10 15:27:53,863 INFO L280 TraceCheckUtils]: 9: Hoare triple {31#true} assume !true; {32#false} is VALID [2020-07-10 15:27:53,864 INFO L263 TraceCheckUtils]: 10: Hoare triple {32#false} call __VERIFIER_assert((if ~z~0 >= 2 then 1 else 0)); {32#false} is VALID [2020-07-10 15:27:53,864 INFO L280 TraceCheckUtils]: 11: Hoare triple {32#false} ~cond := #in~cond; {32#false} is VALID [2020-07-10 15:27:53,865 INFO L280 TraceCheckUtils]: 12: Hoare triple {32#false} assume 0 == ~cond; {32#false} is VALID [2020-07-10 15:27:53,865 INFO L280 TraceCheckUtils]: 13: Hoare triple {32#false} assume !false; {32#false} is VALID [2020-07-10 15:27:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:27:53,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169477215] [2020-07-10 15:27:53,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:27:53,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 15:27:53,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120691226] [2020-07-10 15:27:53,875 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-10 15:27:53,878 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:27:53,882 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 15:27:53,930 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:27:53,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 15:27:53,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:27:53,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 15:27:53,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 15:27:53,940 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-07-10 15:27:54,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:27:54,030 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2020-07-10 15:27:54,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 15:27:54,031 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-10 15:27:54,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:27:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 15:27:54,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2020-07-10 15:27:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 15:27:54,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2020-07-10 15:27:54,050 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 58 transitions. [2020-07-10 15:27:54,170 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:27:54,181 INFO L225 Difference]: With dead ends: 45 [2020-07-10 15:27:54,181 INFO L226 Difference]: Without dead ends: 16 [2020-07-10 15:27:54,185 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 [2020-07-10 15:27:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-10 15:27:54,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-10 15:27:54,239 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:27:54,240 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand 16 states. [2020-07-10 15:27:54,241 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-10 15:27:54,241 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-10 15:27:54,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:27:54,248 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-07-10 15:27:54,248 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-10 15:27:54,249 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:27:54,249 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:27:54,249 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-10 15:27:54,249 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-10 15:27:54,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:27:54,256 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-07-10 15:27:54,256 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-10 15:27:54,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:27:54,260 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:27:54,260 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:27:54,260 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:27:54,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-10 15:27:54,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-07-10 15:27:54,266 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2020-07-10 15:27:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:27:54,266 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-07-10 15:27:54,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 15:27:54,268 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-07-10 15:27:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-10 15:27:54,270 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:27:54,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:27:54,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 15:27:54,272 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:27:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:27:54,272 INFO L82 PathProgramCache]: Analyzing trace with hash -359251077, now seen corresponding path program 1 times [2020-07-10 15:27:54,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:27:54,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18416856] [2020-07-10 15:27:54,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:27:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 15:27:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 15:27:54,391 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-10 15:27:54,391 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 15:27:54,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 15:27:54,418 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 15:27:54,418 WARN L170 areAnnotationChecker]: fENTRY has no Hoare annotation [2020-07-10 15:27:54,418 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 15:27:54,419 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 15:27:54,423 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 15:27:54,424 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-10 15:27:54,424 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 15:27:54,424 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-10 15:27:54,432 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-10 15:27:54,432 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 15:27:54,432 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 15:27:54,432 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-10 15:27:54,432 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-10 15:27:54,432 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 15:27:54,433 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 15:27:54,433 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-10 15:27:54,433 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-10 15:27:54,433 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-10 15:27:54,433 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-10 15:27:54,433 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 15:27:54,433 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-10 15:27:54,434 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2020-07-10 15:27:54,434 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-10 15:27:54,434 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-10 15:27:54,434 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 15:27:54,434 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 15:27:54,434 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-10 15:27:54,434 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-10 15:27:54,435 WARN L170 areAnnotationChecker]: fEXIT has no Hoare annotation [2020-07-10 15:27:54,435 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-10 15:27:54,435 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-10 15:27:54,435 WARN L170 areAnnotationChecker]: L38-1 has no Hoare annotation [2020-07-10 15:27:54,435 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:27:54,435 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-10 15:27:54,435 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-10 15:27:54,436 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-10 15:27:54,436 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 15:27:54,436 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-10 15:27:54,436 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-10 15:27:54,436 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 15:27:54,436 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-10 15:27:54,436 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. [2020-07-10 15:27:54,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 03:27:54 BoogieIcfgContainer [2020-07-10 15:27:54,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 15:27:54,443 INFO L168 Benchmark]: Toolchain (without parser) took 1574.76 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 100.2 MB in the beginning and 107.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:54,444 INFO L168 Benchmark]: CDTParser took 1.46 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-10 15:27:54,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.33 ms. Allocated memory is still 135.8 MB. Free memory was 99.8 MB in the beginning and 89.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:54,446 INFO L168 Benchmark]: Boogie Preprocessor took 111.87 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 89.9 MB in the beginning and 177.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:54,447 INFO L168 Benchmark]: RCFGBuilder took 366.72 ms. Allocated memory is still 199.2 MB. Free memory was 177.9 MB in the beginning and 158.1 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:54,448 INFO L168 Benchmark]: TraceAbstraction took 846.95 ms. Allocated memory is still 199.2 MB. Free memory was 157.4 MB in the beginning and 107.2 MB in the end (delta: 50.2 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. [2020-07-10 15:27:54,451 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 1.46 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.33 ms. Allocated memory is still 135.8 MB. Free memory was 99.8 MB in the beginning and 89.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.87 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 89.9 MB in the beginning and 177.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.72 ms. Allocated memory is still 199.2 MB. Free memory was 177.9 MB in the beginning and 158.1 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 846.95 ms. Allocated memory is still 199.2 MB. Free memory was 157.4 MB in the beginning and 107.2 MB in the end (delta: 50.2 MB). Peak memory consumption was 50.2 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=0, y=0, z=1] [L14] COND FALSE !(!(k <= 1073741823)) VAL [\old(d)=2, d=2, k=0, x=0, y=0, z=1] [L17] COND FALSE !(z < k) VAL [\old(d)=2, d=2, k=0, x=0, 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: 0.2s, 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...