/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/trex02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 12:46:09,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 12:46:09,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 12:46:09,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 12:46:09,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 12:46:09,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 12:46:09,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 12:46:09,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 12:46:09,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 12:46:09,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 12:46:09,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 12:46:09,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 12:46:09,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 12:46:09,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 12:46:09,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 12:46:09,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 12:46:09,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 12:46:09,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 12:46:09,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 12:46:09,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 12:46:09,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 12:46:09,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 12:46:09,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 12:46:09,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 12:46:09,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-08 12:46:09,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-08 12:46:09,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-08 12:46:09,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-08 12:46:09,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-08 12:46:09,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-08 12:46:09,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-08 12:46:09,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-08 12:46:09,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-08 12:46:09,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-08 12:46:09,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-08 12:46:09,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-08 12:46:09,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-08 12:46:09,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-08 12:46:09,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 12:46:09,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 12:46:09,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 12:46:09,932 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 [2020-07-08 12:46:09,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 12:46:09,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 12:46:09,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-08 12:46:09,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-08 12:46:09,950 INFO L138 SettingsManager]: * Use SBE=true [2020-07-08 12:46:09,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 12:46:09,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 12:46:09,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 12:46:09,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 12:46:09,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 12:46:09,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 12:46:09,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 12:46:09,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 12:46:09,952 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 12:46:09,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 12:46:09,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 12:46:09,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 12:46:09,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 12:46:09,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-08 12:46:09,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 12:46:09,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 12:46:09,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 12:46:09,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 12:46:09,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-08 12:46:09,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-08 12:46:09,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-08 12:46:09,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-08 12:46:09,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 12:46:09,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-08 12:46:09,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-08 12:46:10,369 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 12:46:10,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 12:46:10,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 12:46:10,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 12:46:10,389 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 12:46:10,390 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-2.c [2020-07-08 12:46:10,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258ae2c53/5e8e410aeafd432d92a93d76a67f9b74/FLAG2a595bff5 [2020-07-08 12:46:11,024 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 12:46:11,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-2.c [2020-07-08 12:46:11,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258ae2c53/5e8e410aeafd432d92a93d76a67f9b74/FLAG2a595bff5 [2020-07-08 12:46:11,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/258ae2c53/5e8e410aeafd432d92a93d76a67f9b74 [2020-07-08 12:46:11,342 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 12:46:11,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 12:46:11,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 12:46:11,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 12:46:11,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 12:46:11,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:46:11" (1/1) ... [2020-07-08 12:46:11,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b2e3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:11, skipping insertion in model container [2020-07-08 12:46:11,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 12:46:11" (1/1) ... [2020-07-08 12:46:11,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 12:46:11,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 12:46:11,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:46:11,572 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 12:46:11,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 12:46:11,607 INFO L208 MainTranslator]: Completed translation [2020-07-08 12:46:11,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:11 WrapperNode [2020-07-08 12:46:11,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 12:46:11,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 12:46:11,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 12:46:11,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 12:46:11,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:11" (1/1) ... [2020-07-08 12:46:11,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:11" (1/1) ... [2020-07-08 12:46:11,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:11" (1/1) ... [2020-07-08 12:46:11,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:11" (1/1) ... [2020-07-08 12:46:11,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:11" (1/1) ... [2020-07-08 12:46:11,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:11" (1/1) ... [2020-07-08 12:46:11,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:11" (1/1) ... [2020-07-08 12:46:11,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 12:46:11,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 12:46:11,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 12:46:11,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 12:46:11,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:11" (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 [2020-07-08 12:46:11,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 12:46:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 12:46:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 12:46:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-08 12:46:11,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 12:46:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 12:46:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 12:46:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-08 12:46:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 12:46:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-08 12:46:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 12:46:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 12:46:11,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 12:46:12,242 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 12:46:12,242 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-08 12:46:12,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:46:12 BoogieIcfgContainer [2020-07-08 12:46:12,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 12:46:12,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 12:46:12,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 12:46:12,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 12:46:12,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 12:46:11" (1/3) ... [2020-07-08 12:46:12,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d7e409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:46:12, skipping insertion in model container [2020-07-08 12:46:12,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 12:46:11" (2/3) ... [2020-07-08 12:46:12,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d7e409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 12:46:12, skipping insertion in model container [2020-07-08 12:46:12,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 12:46:12" (3/3) ... [2020-07-08 12:46:12,254 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-2.c [2020-07-08 12:46:12,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-08 12:46:12,274 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 12:46:12,290 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 12:46:12,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 12:46:12,317 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 12:46:12,317 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-08 12:46:12,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 12:46:12,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 12:46:12,318 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 12:46:12,318 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 12:46:12,318 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 12:46:12,338 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-08 12:46:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-08 12:46:12,344 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:46:12,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:46:12,345 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:46:12,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:46:12,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1873481772, now seen corresponding path program 1 times [2020-07-08 12:46:12,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:46:12,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684936683] [2020-07-08 12:46:12,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:46:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:46:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 12:46:12,564 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {27#true} is VALID [2020-07-08 12:46:12,568 INFO L280 TraceCheckUtils]: 1: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-08 12:46:12,568 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {27#true} {27#true} #42#return; {27#true} is VALID [2020-07-08 12:46:12,581 INFO L263 TraceCheckUtils]: 0: Hoare triple {27#true} call ULTIMATE.init(); {32#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-08 12:46:12,582 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {27#true} is VALID [2020-07-08 12:46:12,582 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-08 12:46:12,582 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {27#true} {27#true} #42#return; {27#true} is VALID [2020-07-08 12:46:12,583 INFO L263 TraceCheckUtils]: 4: Hoare triple {27#true} call #t~ret3 := main(); {27#true} is VALID [2020-07-08 12:46:12,583 INFO L280 TraceCheckUtils]: 5: Hoare triple {27#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~x~0 := #t~nondet1;havoc #t~nondet1; {27#true} is VALID [2020-07-08 12:46:12,588 INFO L280 TraceCheckUtils]: 6: Hoare triple {27#true} assume !true; {28#false} is VALID [2020-07-08 12:46:12,589 INFO L263 TraceCheckUtils]: 7: Hoare triple {28#false} call __VERIFIER_assert((if 0 == ~x~0 then 1 else 0)); {28#false} is VALID [2020-07-08 12:46:12,589 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#false} ~cond := #in~cond; {28#false} is VALID [2020-07-08 12:46:12,589 INFO L280 TraceCheckUtils]: 9: Hoare triple {28#false} assume 0 == ~cond; {28#false} is VALID [2020-07-08 12:46:12,590 INFO L280 TraceCheckUtils]: 10: Hoare triple {28#false} assume !false; {28#false} is VALID [2020-07-08 12:46:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 12:46:12,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684936683] [2020-07-08 12:46:12,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 12:46:12,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-08 12:46:12,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101247762] [2020-07-08 12:46:12,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-07-08 12:46:12,603 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 12:46:12,606 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-08 12:46:12,633 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:46:12,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-08 12:46:12,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-08 12:46:12,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-08 12:46:12,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-08 12:46:12,646 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-07-08 12:46:12,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:46:12,781 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-07-08 12:46:12,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-08 12:46:12,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-07-08 12:46:12,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 12:46:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-08 12:46:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2020-07-08 12:46:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-08 12:46:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2020-07-08 12:46:12,800 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 40 transitions. [2020-07-08 12:46:13,033 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 12:46:13,047 INFO L225 Difference]: With dead ends: 35 [2020-07-08 12:46:13,047 INFO L226 Difference]: Without dead ends: 18 [2020-07-08 12:46:13,052 INFO L675 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 [2020-07-08 12:46:13,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-08 12:46:13,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-08 12:46:13,118 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 12:46:13,119 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 18 states. [2020-07-08 12:46:13,120 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-08 12:46:13,120 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-08 12:46:13,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:46:13,126 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2020-07-08 12:46:13,126 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-07-08 12:46:13,127 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:46:13,127 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:46:13,127 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-08 12:46:13,128 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-08 12:46:13,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 12:46:13,133 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2020-07-08 12:46:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-07-08 12:46:13,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 12:46:13,134 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 12:46:13,135 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 12:46:13,135 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 12:46:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-08 12:46:13,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-07-08 12:46:13,141 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2020-07-08 12:46:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 12:46:13,142 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-07-08 12:46:13,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-08 12:46:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-07-08 12:46:13,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-08 12:46:13,143 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 12:46:13,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 12:46:13,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 12:46:13,144 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 12:46:13,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 12:46:13,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1862399520, now seen corresponding path program 1 times [2020-07-08 12:46:13,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-08 12:46:13,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356273136] [2020-07-08 12:46:13,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 12:46:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 12:46:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 12:46:13,211 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-08 12:46:13,211 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-08 12:46:13,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 12:46:13,237 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-08 12:46:13,237 WARN L170 areAnnotationChecker]: fooENTRY has no Hoare annotation [2020-07-08 12:46:13,238 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 12:46:13,238 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 12:46:13,238 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-08 12:46:13,238 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-08 12:46:13,238 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 12:46:13,238 WARN L170 areAnnotationChecker]: fooFINAL has no Hoare annotation [2020-07-08 12:46:13,239 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 12:46:13,239 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 12:46:13,239 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-08 12:46:13,239 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-08 12:46:13,239 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-08 12:46:13,239 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 12:46:13,239 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 12:46:13,240 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 12:46:13,240 WARN L170 areAnnotationChecker]: fooEXIT has no Hoare annotation [2020-07-08 12:46:13,240 WARN L170 areAnnotationChecker]: fooEXIT has no Hoare annotation [2020-07-08 12:46:13,240 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 12:46:13,240 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-08 12:46:13,241 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-08 12:46:13,241 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-08 12:46:13,241 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-08 12:46:13,241 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 12:46:13,241 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 12:46:13,241 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-08 12:46:13,241 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-08 12:46:13,242 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2020-07-08 12:46:13,242 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2020-07-08 12:46:13,242 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-08 12:46:13,242 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-08 12:46:13,242 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-08 12:46:13,243 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-08 12:46:13,243 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. [2020-07-08 12:46:13,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 12:46:13 BoogieIcfgContainer [2020-07-08 12:46:13,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 12:46:13,250 INFO L168 Benchmark]: Toolchain (without parser) took 1905.57 ms. Allocated memory was 144.2 MB in the beginning and 198.7 MB in the end (delta: 54.5 MB). Free memory was 102.4 MB in the beginning and 109.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-07-08 12:46:13,251 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-08 12:46:13,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.69 ms. Allocated memory is still 144.2 MB. Free memory was 102.0 MB in the beginning and 92.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-08 12:46:13,253 INFO L168 Benchmark]: Boogie Preprocessor took 36.28 ms. Allocated memory is still 144.2 MB. Free memory was 92.5 MB in the beginning and 90.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-07-08 12:46:13,254 INFO L168 Benchmark]: RCFGBuilder took 601.14 ms. Allocated memory was 144.2 MB in the beginning and 198.7 MB in the end (delta: 54.5 MB). Free memory was 90.9 MB in the beginning and 161.6 MB in the end (delta: -70.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-08 12:46:13,255 INFO L168 Benchmark]: TraceAbstraction took 998.69 ms. Allocated memory is still 198.7 MB. Free memory was 160.9 MB in the beginning and 109.4 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2020-07-08 12:46:13,259 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 0.27 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 263.69 ms. Allocated memory is still 144.2 MB. Free memory was 102.0 MB in the beginning and 92.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.28 ms. Allocated memory is still 144.2 MB. Free memory was 92.5 MB in the beginning and 90.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 601.14 ms. Allocated memory was 144.2 MB in the beginning and 198.7 MB in the end (delta: 54.5 MB). Free memory was 90.9 MB in the beginning and 161.6 MB in the end (delta: -70.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 998.69 ms. Allocated memory is still 198.7 MB. Free memory was 160.9 MB in the beginning and 109.4 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 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: [L13] int x; VAL [\old(x)=2, x=0] [L20] x=__VERIFIER_nondet_int() [L21] COND FALSE !(x > 0) VAL [\old(x)=0, x=-1] [L26] CALL __VERIFIER_assert(x==0) VAL [\old(cond)=0, \old(x)=0, x=-1] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(x)=0, cond=0, x=-1] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(x)=0, cond=0, x=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 5 SDslu, 10 SDs, 0 SdLazy, 7 SolverSat, 4 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=24occurred 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, 120 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...