/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/loop-acceleration/phases_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:50:57,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:50:57,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:50:57,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:50:57,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:50:57,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:50:57,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:50:57,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:50:57,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:50:57,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:50:57,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:50:57,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:50:57,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:50:57,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:50:57,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:50:57,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:50:57,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:50:57,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:50:57,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:50:57,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:50:57,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:50:57,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:50:57,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:50:57,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:50:57,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:50:57,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:50:57,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:50:57,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:50:57,221 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 22:50:57,235 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:50:57,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:50:57,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:50:57,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:50:57,237 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:50:57,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:50:57,237 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:50:57,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:50:57,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:50:57,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:50:57,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:50:57,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:50:57,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:50:57,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:50:57,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:50:57,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:50:57,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:50:57,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:50:57,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:50:57,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:50:57,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:50:57,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:50:57,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:50:57,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:50:57,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:50:57,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:50:57,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:50:57,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:50:57,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:50:57,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:50:57,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:50:57,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:50:57,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:50:57,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:50:57,519 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:50:57,519 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-1.c [2020-07-17 22:50:57,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e763e12c0/95ddb289416248d098be80e6b17f9161/FLAG4bd4b701b [2020-07-17 22:50:58,112 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:50:58,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-1.c [2020-07-17 22:50:58,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e763e12c0/95ddb289416248d098be80e6b17f9161/FLAG4bd4b701b [2020-07-17 22:50:58,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e763e12c0/95ddb289416248d098be80e6b17f9161 [2020-07-17 22:50:58,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:50:58,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:50:58,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:58,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:50:58,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:50:58,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:58" (1/1) ... [2020-07-17 22:50:58,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30399431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:58, skipping insertion in model container [2020-07-17 22:50:58,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:50:58" (1/1) ... [2020-07-17 22:50:58,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:50:58,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:50:58,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:58,768 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:50:58,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:50:58,802 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:50:58,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:58 WrapperNode [2020-07-17 22:50:58,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:50:58,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:50:58,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:50:58,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:50:58,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:58" (1/1) ... [2020-07-17 22:50:58,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:58" (1/1) ... [2020-07-17 22:50:58,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:58" (1/1) ... [2020-07-17 22:50:58,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:58" (1/1) ... [2020-07-17 22:50:58,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:58" (1/1) ... [2020-07-17 22:50:58,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:58" (1/1) ... [2020-07-17 22:50:58,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:58" (1/1) ... [2020-07-17 22:50:58,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:50:58,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:50:58,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:50:58,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:50:58,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:58" (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 22:50:58,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:50:58,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:50:58,987 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 22:50:58,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:50:58,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:50:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:50:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 22:50:58,988 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 22:50:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-17 22:50:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:50:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:50:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:50:58,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:50:59,307 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:50:59,307 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 22:50:59,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:59 BoogieIcfgContainer [2020-07-17 22:50:59,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:50:59,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:50:59,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:50:59,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:50:59,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:50:58" (1/3) ... [2020-07-17 22:50:59,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f7a112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:59, skipping insertion in model container [2020-07-17 22:50:59,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:50:58" (2/3) ... [2020-07-17 22:50:59,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f7a112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:50:59, skipping insertion in model container [2020-07-17 22:50:59,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:50:59" (3/3) ... [2020-07-17 22:50:59,319 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_2-1.c [2020-07-17 22:50:59,330 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:50:59,337 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:50:59,351 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:50:59,371 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:50:59,371 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:50:59,371 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:50:59,371 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:50:59,371 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:50:59,372 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:50:59,372 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:50:59,372 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:50:59,387 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-17 22:50:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-17 22:50:59,391 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:59,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:59,393 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:59,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:59,399 INFO L82 PathProgramCache]: Analyzing trace with hash 900249630, now seen corresponding path program 1 times [2020-07-17 22:50:59,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:59,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240261618] [2020-07-17 22:50:59,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:50:59,534 INFO L280 TraceCheckUtils]: 0: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-17 22:50:59,535 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {22#true} {22#true} #49#return; {22#true} is VALID [2020-07-17 22:50:59,537 INFO L263 TraceCheckUtils]: 0: Hoare triple {22#true} call ULTIMATE.init(); {22#true} is VALID [2020-07-17 22:50:59,538 INFO L280 TraceCheckUtils]: 1: Hoare triple {22#true} assume true; {22#true} is VALID [2020-07-17 22:50:59,538 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {22#true} {22#true} #49#return; {22#true} is VALID [2020-07-17 22:50:59,538 INFO L263 TraceCheckUtils]: 3: Hoare triple {22#true} call #t~ret2 := main(); {22#true} is VALID [2020-07-17 22:50:59,539 INFO L280 TraceCheckUtils]: 4: Hoare triple {22#true} ~x~0 := 1;~y~0 := #t~nondet0;havoc #t~nondet0; {22#true} is VALID [2020-07-17 22:50:59,539 INFO L280 TraceCheckUtils]: 5: Hoare triple {22#true} assume !!(~y~0 % 4294967296 > 0); {22#true} is VALID [2020-07-17 22:50:59,541 INFO L280 TraceCheckUtils]: 6: Hoare triple {22#true} assume !true; {23#false} is VALID [2020-07-17 22:50:59,541 INFO L263 TraceCheckUtils]: 7: Hoare triple {23#false} call __VERIFIER_assert((if ~x~0 % 4294967296 != ~y~0 % 4294967296 then 1 else 0)); {23#false} is VALID [2020-07-17 22:50:59,541 INFO L280 TraceCheckUtils]: 8: Hoare triple {23#false} ~cond := #in~cond; {23#false} is VALID [2020-07-17 22:50:59,542 INFO L280 TraceCheckUtils]: 9: Hoare triple {23#false} assume 0 == ~cond; {23#false} is VALID [2020-07-17 22:50:59,542 INFO L280 TraceCheckUtils]: 10: Hoare triple {23#false} assume !false; {23#false} is VALID [2020-07-17 22:50:59,543 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 22:50:59,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240261618] [2020-07-17 22:50:59,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:50:59,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 22:50:59,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63833091] [2020-07-17 22:50:59,552 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-17 22:50:59,555 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:50:59,558 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-17 22:50:59,591 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:59,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 22:50:59,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:50:59,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 22:50:59,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 22:50:59,604 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-17 22:50:59,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:59,677 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-07-17 22:50:59,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 22:50:59,678 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-17 22:50:59,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:50:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:50:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2020-07-17 22:50:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-17 22:50:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2020-07-17 22:50:59,693 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 35 transitions. [2020-07-17 22:50:59,766 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:50:59,777 INFO L225 Difference]: With dead ends: 30 [2020-07-17 22:50:59,777 INFO L226 Difference]: Without dead ends: 13 [2020-07-17 22:50:59,781 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 22:50:59,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-17 22:50:59,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-17 22:50:59,822 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:50:59,823 INFO L82 GeneralOperation]: Start isEquivalent. First operand 13 states. Second operand 13 states. [2020-07-17 22:50:59,823 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2020-07-17 22:50:59,824 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2020-07-17 22:50:59,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:59,827 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-07-17 22:50:59,827 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-17 22:50:59,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:59,828 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:59,828 INFO L74 IsIncluded]: Start isIncluded. First operand 13 states. Second operand 13 states. [2020-07-17 22:50:59,828 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 13 states. [2020-07-17 22:50:59,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:50:59,832 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-07-17 22:50:59,832 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-17 22:50:59,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:50:59,833 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:50:59,833 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:50:59,833 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:50:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-17 22:50:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-17 22:50:59,837 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2020-07-17 22:50:59,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:50:59,838 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-17 22:50:59,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 22:50:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-17 22:50:59,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-17 22:50:59,839 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:50:59,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:50:59,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:50:59,840 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:50:59,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:50:59,841 INFO L82 PathProgramCache]: Analyzing trace with hash 891014420, now seen corresponding path program 1 times [2020-07-17 22:50:59,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:50:59,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761945039] [2020-07-17 22:50:59,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:50:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:50:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:50:59,908 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:50:59,909 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:50:59,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:50:59,929 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:50:59,929 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:50:59,930 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:50:59,930 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-17 22:50:59,930 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:50:59,930 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-17 22:50:59,930 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:50:59,931 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:50:59,931 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:50:59,931 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:50:59,931 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:50:59,931 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-17 22:50:59,932 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-17 22:50:59,932 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-17 22:50:59,932 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-17 22:50:59,932 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:50:59,932 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-17 22:50:59,932 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:50:59,933 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-17 22:50:59,933 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-17 22:50:59,933 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-17 22:50:59,933 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-17 22:50:59,933 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-17 22:50:59,934 WARN L170 areAnnotationChecker]: L9-2 has no Hoare annotation [2020-07-17 22:50:59,934 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:50:59,934 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-17 22:50:59,934 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-17 22:50:59,934 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-17 22:50:59,934 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-17 22:50:59,935 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:50:59,935 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 22:50:59,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:50:59 BoogieIcfgContainer [2020-07-17 22:50:59,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:50:59,941 INFO L168 Benchmark]: Toolchain (without parser) took 1396.12 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 103.9 MB in the beginning and 123.0 MB in the end (delta: -19.1 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:59,942 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 22:50:59,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.15 ms. Allocated memory is still 138.9 MB. Free memory was 103.7 MB in the beginning and 93.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:59,944 INFO L168 Benchmark]: Boogie Preprocessor took 121.24 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.9 MB in the beginning and 181.1 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:59,945 INFO L168 Benchmark]: RCFGBuilder took 386.61 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 165.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:59,946 INFO L168 Benchmark]: TraceAbstraction took 625.40 ms. Allocated memory is still 202.9 MB. Free memory was 164.4 MB in the beginning and 123.0 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:50:59,950 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 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.15 ms. Allocated memory is still 138.9 MB. Free memory was 103.7 MB in the beginning and 93.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.24 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.9 MB in the beginning and 181.1 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 386.61 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 165.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 625.40 ms. Allocated memory is still 202.9 MB. Free memory was 164.4 MB in the beginning and 123.0 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] unsigned int x = 1; [L17] unsigned int y = __VERIFIER_nondet_uint(); [L19] COND FALSE !(!(y > 0)) VAL [x=1, y=1] [L21] COND FALSE !(x < y) VAL [x=1, y=1] [L29] CALL __VERIFIER_assert(x != y) VAL [\old(cond)=0] [L9] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L10] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 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=19occurred 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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...