/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/recursive/BallRajamani-SPIN2000-Fig1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 14:43:12,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 14:43:12,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 14:43:12,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 14:43:12,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 14:43:12,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 14:43:12,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 14:43:12,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 14:43:12,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 14:43:12,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 14:43:12,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 14:43:12,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 14:43:12,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 14:43:12,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 14:43:12,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 14:43:12,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 14:43:12,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 14:43:12,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 14:43:12,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 14:43:12,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 14:43:12,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 14:43:12,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 14:43:12,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 14:43:12,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 14:43:12,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 14:43:12,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 14:43:12,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 14:43:12,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 14:43:12,556 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 14:43:12,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 14:43:12,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 14:43:12,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 14:43:12,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 14:43:12,572 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 14:43:12,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 14:43:12,572 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 14:43:12,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 14:43:12,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 14:43:12,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 14:43:12,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 14:43:12,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 14:43:12,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 14:43:12,574 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 14:43:12,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 14:43:12,574 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 14:43:12,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 14:43:12,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 14:43:12,575 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 14:43:12,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 14:43:12,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 14:43:12,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 14:43:12,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 14:43:12,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 14:43:12,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 14:43:12,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 14:43:12,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 14:43:12,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 14:43:12,577 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 14:43:12,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 14:43:12,857 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 14:43:12,870 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 14:43:12,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 14:43:12,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 14:43:12,875 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 14:43:12,876 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c [2020-07-10 14:43:12,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e80a8a2/aa153e3fbdd14ebbb636ec657c201cfb/FLAG398bd0d21 [2020-07-10 14:43:13,369 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 14:43:13,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c [2020-07-10 14:43:13,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e80a8a2/aa153e3fbdd14ebbb636ec657c201cfb/FLAG398bd0d21 [2020-07-10 14:43:13,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e80a8a2/aa153e3fbdd14ebbb636ec657c201cfb [2020-07-10 14:43:13,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 14:43:13,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 14:43:13,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 14:43:13,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 14:43:13,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 14:43:13,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 02:43:13" (1/1) ... [2020-07-10 14:43:13,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b1e30b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:43:13, skipping insertion in model container [2020-07-10 14:43:13,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 02:43:13" (1/1) ... [2020-07-10 14:43:13,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 14:43:13,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 14:43:13,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 14:43:13,960 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 14:43:13,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 14:43:13,992 INFO L208 MainTranslator]: Completed translation [2020-07-10 14:43:13,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:43:13 WrapperNode [2020-07-10 14:43:13,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 14:43:13,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 14:43:13,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 14:43:13,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 14:43:14,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:43:13" (1/1) ... [2020-07-10 14:43:14,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:43:13" (1/1) ... [2020-07-10 14:43:14,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:43:13" (1/1) ... [2020-07-10 14:43:14,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:43:13" (1/1) ... [2020-07-10 14:43:14,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:43:13" (1/1) ... [2020-07-10 14:43:14,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:43:13" (1/1) ... [2020-07-10 14:43:14,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:43:13" (1/1) ... [2020-07-10 14:43:14,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 14:43:14,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 14:43:14,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 14:43:14,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 14:43:14,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:43:13" (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 14:43:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 14:43:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 14:43:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure A [2020-07-10 14:43:14,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 14:43:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 14:43:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 14:43:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure A [2020-07-10 14:43:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 14:43:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 14:43:14,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 14:43:14,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 14:43:14,408 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-10 14:43:14,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:43:14 BoogieIcfgContainer [2020-07-10 14:43:14,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 14:43:14,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 14:43:14,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 14:43:14,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 14:43:14,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 02:43:13" (1/3) ... [2020-07-10 14:43:14,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42048fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 02:43:14, skipping insertion in model container [2020-07-10 14:43:14,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 02:43:13" (2/3) ... [2020-07-10 14:43:14,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42048fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 02:43:14, skipping insertion in model container [2020-07-10 14:43:14,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:43:14" (3/3) ... [2020-07-10 14:43:14,423 INFO L109 eAbstractionObserver]: Analyzing ICFG BallRajamani-SPIN2000-Fig1.c [2020-07-10 14:43:14,439 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 14:43:14,449 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 14:43:14,465 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 14:43:14,502 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 14:43:14,502 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 14:43:14,503 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 14:43:14,503 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 14:43:14,503 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 14:43:14,503 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 14:43:14,506 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 14:43:14,507 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 14:43:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-10 14:43:14,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-10 14:43:14,557 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 14:43:14,558 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 14:43:14,558 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 14:43:14,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 14:43:14,565 INFO L82 PathProgramCache]: Analyzing trace with hash -284235614, now seen corresponding path program 1 times [2020-07-10 14:43:14,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 14:43:14,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869744793] [2020-07-10 14:43:14,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 14:43:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 14:43:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 14:43:14,807 INFO L280 TraceCheckUtils]: 0: Hoare triple {40#(= ~g~0 |old(~g~0)|)} ~g~0 := 0; {26#true} is VALID [2020-07-10 14:43:14,809 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-10 14:43:14,810 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {26#true} {26#true} #33#return; {26#true} is VALID [2020-07-10 14:43:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 14:43:14,875 INFO L280 TraceCheckUtils]: 0: Hoare triple {40#(= ~g~0 |old(~g~0)|)} ~a1 := #in~a1;~a2 := #in~a2; {41#(= A_~a1 |A_#in~a1|)} is VALID [2020-07-10 14:43:14,877 INFO L280 TraceCheckUtils]: 1: Hoare triple {41#(= A_~a1 |A_#in~a1|)} assume !(0 != ~a1);~g~0 := ~a2; {42#(= 0 |A_#in~a1|)} is VALID [2020-07-10 14:43:14,878 INFO L280 TraceCheckUtils]: 2: Hoare triple {42#(= 0 |A_#in~a1|)} assume true; {42#(= 0 |A_#in~a1|)} is VALID [2020-07-10 14:43:14,881 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {42#(= 0 |A_#in~a1|)} {26#true} #37#return; {35#(= 0 main_~g~1)} is VALID [2020-07-10 14:43:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 14:43:14,897 INFO L280 TraceCheckUtils]: 0: Hoare triple {40#(= ~g~0 |old(~g~0)|)} ~a1 := #in~a1;~a2 := #in~a2; {26#true} is VALID [2020-07-10 14:43:14,898 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} assume !(0 != ~a1);~g~0 := ~a2; {26#true} is VALID [2020-07-10 14:43:14,898 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-10 14:43:14,900 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {26#true} {35#(= 0 main_~g~1)} #39#return; {35#(= 0 main_~g~1)} is VALID [2020-07-10 14:43:14,902 INFO L263 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {40#(= ~g~0 |old(~g~0)|)} is VALID [2020-07-10 14:43:14,903 INFO L280 TraceCheckUtils]: 1: Hoare triple {40#(= ~g~0 |old(~g~0)|)} ~g~0 := 0; {26#true} is VALID [2020-07-10 14:43:14,903 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-10 14:43:14,904 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {26#true} {26#true} #33#return; {26#true} is VALID [2020-07-10 14:43:14,904 INFO L263 TraceCheckUtils]: 4: Hoare triple {26#true} call #t~ret4 := main(); {26#true} is VALID [2020-07-10 14:43:14,905 INFO L280 TraceCheckUtils]: 5: Hoare triple {26#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~g~1 := #t~nondet1;havoc #t~nondet1;~h~0 := (if 0 == ~g~1 then 1 else 0); {26#true} is VALID [2020-07-10 14:43:14,907 INFO L263 TraceCheckUtils]: 6: Hoare triple {26#true} call #t~ret2 := A(~g~1, ~h~0); {40#(= ~g~0 |old(~g~0)|)} is VALID [2020-07-10 14:43:14,908 INFO L280 TraceCheckUtils]: 7: Hoare triple {40#(= ~g~0 |old(~g~0)|)} ~a1 := #in~a1;~a2 := #in~a2; {41#(= A_~a1 |A_#in~a1|)} is VALID [2020-07-10 14:43:14,909 INFO L280 TraceCheckUtils]: 8: Hoare triple {41#(= A_~a1 |A_#in~a1|)} assume !(0 != ~a1);~g~0 := ~a2; {42#(= 0 |A_#in~a1|)} is VALID [2020-07-10 14:43:14,910 INFO L280 TraceCheckUtils]: 9: Hoare triple {42#(= 0 |A_#in~a1|)} assume true; {42#(= 0 |A_#in~a1|)} is VALID [2020-07-10 14:43:14,914 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {42#(= 0 |A_#in~a1|)} {26#true} #37#return; {35#(= 0 main_~g~1)} is VALID [2020-07-10 14:43:14,915 INFO L280 TraceCheckUtils]: 11: Hoare triple {35#(= 0 main_~g~1)} assume -2147483648 <= #t~ret2 && #t~ret2 <= 2147483647;havoc #t~ret2; {35#(= 0 main_~g~1)} is VALID [2020-07-10 14:43:14,918 INFO L263 TraceCheckUtils]: 12: Hoare triple {35#(= 0 main_~g~1)} call #t~ret3 := A(~g~1, ~h~0); {40#(= ~g~0 |old(~g~0)|)} is VALID [2020-07-10 14:43:14,919 INFO L280 TraceCheckUtils]: 13: Hoare triple {40#(= ~g~0 |old(~g~0)|)} ~a1 := #in~a1;~a2 := #in~a2; {26#true} is VALID [2020-07-10 14:43:14,919 INFO L280 TraceCheckUtils]: 14: Hoare triple {26#true} assume !(0 != ~a1);~g~0 := ~a2; {26#true} is VALID [2020-07-10 14:43:14,920 INFO L280 TraceCheckUtils]: 15: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-10 14:43:14,922 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {26#true} {35#(= 0 main_~g~1)} #39#return; {35#(= 0 main_~g~1)} is VALID [2020-07-10 14:43:14,924 INFO L280 TraceCheckUtils]: 17: Hoare triple {35#(= 0 main_~g~1)} assume -2147483648 <= #t~ret3 && #t~ret3 <= 2147483647;havoc #t~ret3; {35#(= 0 main_~g~1)} is VALID [2020-07-10 14:43:14,925 INFO L280 TraceCheckUtils]: 18: Hoare triple {35#(= 0 main_~g~1)} assume 0 != ~g~1; {27#false} is VALID [2020-07-10 14:43:14,926 INFO L280 TraceCheckUtils]: 19: Hoare triple {27#false} assume !false; {27#false} is VALID [2020-07-10 14:43:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-10 14:43:14,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869744793] [2020-07-10 14:43:14,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069577209] [2020-07-10 14:43:14,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-10 14:43:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 14:43:14,998 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-10 14:43:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 14:43:15,029 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-10 14:43:15,093 INFO L263 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {26#true} is VALID [2020-07-10 14:43:15,093 INFO L280 TraceCheckUtils]: 1: Hoare triple {26#true} ~g~0 := 0; {26#true} is VALID [2020-07-10 14:43:15,094 INFO L280 TraceCheckUtils]: 2: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-10 14:43:15,094 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {26#true} {26#true} #33#return; {26#true} is VALID [2020-07-10 14:43:15,095 INFO L263 TraceCheckUtils]: 4: Hoare triple {26#true} call #t~ret4 := main(); {26#true} is VALID [2020-07-10 14:43:15,095 INFO L280 TraceCheckUtils]: 5: Hoare triple {26#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647;~g~1 := #t~nondet1;havoc #t~nondet1;~h~0 := (if 0 == ~g~1 then 1 else 0); {26#true} is VALID [2020-07-10 14:43:15,096 INFO L263 TraceCheckUtils]: 6: Hoare triple {26#true} call #t~ret2 := A(~g~1, ~h~0); {26#true} is VALID [2020-07-10 14:43:15,097 INFO L280 TraceCheckUtils]: 7: Hoare triple {26#true} ~a1 := #in~a1;~a2 := #in~a2; {41#(= A_~a1 |A_#in~a1|)} is VALID [2020-07-10 14:43:15,099 INFO L280 TraceCheckUtils]: 8: Hoare triple {41#(= A_~a1 |A_#in~a1|)} assume !(0 != ~a1);~g~0 := ~a2; {42#(= 0 |A_#in~a1|)} is VALID [2020-07-10 14:43:15,100 INFO L280 TraceCheckUtils]: 9: Hoare triple {42#(= 0 |A_#in~a1|)} assume true; {42#(= 0 |A_#in~a1|)} is VALID [2020-07-10 14:43:15,102 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {42#(= 0 |A_#in~a1|)} {26#true} #37#return; {35#(= 0 main_~g~1)} is VALID [2020-07-10 14:43:15,104 INFO L280 TraceCheckUtils]: 11: Hoare triple {35#(= 0 main_~g~1)} assume -2147483648 <= #t~ret2 && #t~ret2 <= 2147483647;havoc #t~ret2; {35#(= 0 main_~g~1)} is VALID [2020-07-10 14:43:15,104 INFO L263 TraceCheckUtils]: 12: Hoare triple {35#(= 0 main_~g~1)} call #t~ret3 := A(~g~1, ~h~0); {26#true} is VALID [2020-07-10 14:43:15,105 INFO L280 TraceCheckUtils]: 13: Hoare triple {26#true} ~a1 := #in~a1;~a2 := #in~a2; {26#true} is VALID [2020-07-10 14:43:15,105 INFO L280 TraceCheckUtils]: 14: Hoare triple {26#true} assume !(0 != ~a1);~g~0 := ~a2; {26#true} is VALID [2020-07-10 14:43:15,105 INFO L280 TraceCheckUtils]: 15: Hoare triple {26#true} assume true; {26#true} is VALID [2020-07-10 14:43:15,107 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {26#true} {35#(= 0 main_~g~1)} #39#return; {35#(= 0 main_~g~1)} is VALID [2020-07-10 14:43:15,109 INFO L280 TraceCheckUtils]: 17: Hoare triple {35#(= 0 main_~g~1)} assume -2147483648 <= #t~ret3 && #t~ret3 <= 2147483647;havoc #t~ret3; {35#(= 0 main_~g~1)} is VALID [2020-07-10 14:43:15,110 INFO L280 TraceCheckUtils]: 18: Hoare triple {35#(= 0 main_~g~1)} assume 0 != ~g~1; {27#false} is VALID [2020-07-10 14:43:15,111 INFO L280 TraceCheckUtils]: 19: Hoare triple {27#false} assume !false; {27#false} is VALID [2020-07-10 14:43:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-10 14:43:15,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-10 14:43:15,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2020-07-10 14:43:15,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804102046] [2020-07-10 14:43:15,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-10 14:43:15,127 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 14:43:15,131 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-10 14:43:15,178 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 14:43:15,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-10 14:43:15,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 14:43:15,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-10 14:43:15,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-10 14:43:15,191 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2020-07-10 14:43:15,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 14:43:15,572 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-07-10 14:43:15,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-10 14:43:15,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-10 14:43:15,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 14:43:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 14:43:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 55 transitions. [2020-07-10 14:43:15,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 14:43:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 55 transitions. [2020-07-10 14:43:15,593 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 55 transitions. [2020-07-10 14:43:15,671 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 14:43:15,682 INFO L225 Difference]: With dead ends: 45 [2020-07-10 14:43:15,683 INFO L226 Difference]: Without dead ends: 21 [2020-07-10 14:43:15,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-07-10 14:43:15,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-10 14:43:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-10 14:43:15,736 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 14:43:15,737 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand 21 states. [2020-07-10 14:43:15,737 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-10 14:43:15,738 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-10 14:43:15,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 14:43:15,743 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-10 14:43:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-07-10 14:43:15,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 14:43:15,744 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 14:43:15,745 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-10 14:43:15,745 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-10 14:43:15,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 14:43:15,749 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-10 14:43:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-07-10 14:43:15,750 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 14:43:15,750 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 14:43:15,750 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 14:43:15,751 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 14:43:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-10 14:43:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-07-10 14:43:15,756 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2020-07-10 14:43:15,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 14:43:15,756 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-07-10 14:43:15,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-10 14:43:15,757 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-07-10 14:43:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-10 14:43:15,758 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 14:43:15,759 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 14:43:15,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-10 14:43:15,972 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 14:43:15,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 14:43:15,974 INFO L82 PathProgramCache]: Analyzing trace with hash -920468714, now seen corresponding path program 1 times [2020-07-10 14:43:15,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 14:43:15,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846605375] [2020-07-10 14:43:15,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 14:43:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 14:43:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 14:43:16,051 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-10 14:43:16,051 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 14:43:16,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 14:43:16,082 WARN L170 areAnnotationChecker]: AENTRY has no Hoare annotation [2020-07-10 14:43:16,082 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-10 14:43:16,082 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 14:43:16,082 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 14:43:16,082 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 14:43:16,083 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-10 14:43:16,083 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-10 14:43:16,083 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 14:43:16,083 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 14:43:16,083 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 14:43:16,083 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-10 14:43:16,083 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-10 14:43:16,084 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-10 14:43:16,084 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-10 14:43:16,084 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-10 14:43:16,084 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 14:43:16,084 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 14:43:16,084 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2020-07-10 14:43:16,084 WARN L170 areAnnotationChecker]: L18-1 has no Hoare annotation [2020-07-10 14:43:16,085 WARN L170 areAnnotationChecker]: AEXIT has no Hoare annotation [2020-07-10 14:43:16,085 WARN L170 areAnnotationChecker]: AEXIT has no Hoare annotation [2020-07-10 14:43:16,085 WARN L170 areAnnotationChecker]: AEXIT has no Hoare annotation [2020-07-10 14:43:16,085 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-10 14:43:16,085 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-10 14:43:16,085 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2020-07-10 14:43:16,085 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-10 14:43:16,085 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-10 14:43:16,086 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-10 14:43:16,086 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-10 14:43:16,086 WARN L170 areAnnotationChecker]: L30-2 has no Hoare annotation [2020-07-10 14:43:16,086 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 14:43:16,086 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 14:43:16,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 02:43:16 BoogieIcfgContainer [2020-07-10 14:43:16,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 14:43:16,093 INFO L168 Benchmark]: Toolchain (without parser) took 2338.59 ms. Allocated memory was 137.4 MB in the beginning and 231.7 MB in the end (delta: 94.4 MB). Free memory was 102.3 MB in the beginning and 160.0 MB in the end (delta: -57.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-07-10 14:43:16,094 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-10 14:43:16,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.25 ms. Allocated memory is still 137.4 MB. Free memory was 101.9 MB in the beginning and 92.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-10 14:43:16,095 INFO L168 Benchmark]: Boogie Preprocessor took 29.61 ms. Allocated memory is still 137.4 MB. Free memory was 92.5 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-10 14:43:16,096 INFO L168 Benchmark]: RCFGBuilder took 391.56 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 91.0 MB in the beginning and 163.5 MB in the end (delta: -72.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-10 14:43:16,097 INFO L168 Benchmark]: TraceAbstraction took 1673.32 ms. Allocated memory was 199.8 MB in the beginning and 231.7 MB in the end (delta: 32.0 MB). Free memory was 162.8 MB in the beginning and 160.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. [2020-07-10 14:43:16,101 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 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.25 ms. Allocated memory is still 137.4 MB. Free memory was 101.9 MB in the beginning and 92.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.61 ms. Allocated memory is still 137.4 MB. Free memory was 92.5 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 391.56 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 91.0 MB in the beginning and 163.5 MB in the end (delta: -72.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1673.32 ms. Allocated memory was 199.8 MB in the beginning and 231.7 MB in the end (delta: 32.0 MB). Free memory was 162.8 MB in the beginning and 160.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 31]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int g; VAL [\old(g)=4, g=0] [L26] int g = __VERIFIER_nondet_int(); [L27] int h = !g; VAL [\old(g)=0, g=1, g=0, h=0] [L28] CALL A(g,h) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, g=0] [L17] COND TRUE \read(a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, a1=1, a2=0, g=0] [L18] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=1, \old(g)=0, g=0] [L17] COND FALSE !(\read(a1)) [L20] g = a2 VAL [\old(a1)=0, \old(a2)=1, \old(g)=0, a1=0, a2=1, g=1] [L18] RET A(a2,a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, A(a2,a1)=-1, a1=1, a2=0, g=1] [L28] RET A(g,h) VAL [\old(g)=0, A(g,h)=2, g=1, g=1, h=0] [L29] CALL A(g,h) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, g=1] [L17] COND TRUE \read(a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, a1=1, a2=0, g=1] [L18] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=1, \old(g)=1, g=1] [L17] COND FALSE !(\read(a1)) [L20] g = a2 VAL [\old(a1)=0, \old(a2)=1, \old(g)=1, a1=0, a2=1, g=1] [L18] RET A(a2,a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, A(a2,a1)=-2, a1=1, a2=0, g=1] [L29] RET A(g,h) VAL [\old(g)=0, A(g,h)=3, g=1, g=1, h=0] [L30] COND TRUE \read(g) VAL [\old(g)=0, g=1, g=1, h=0] [L31] __VERIFIER_error() VAL [\old(g)=0, g=1, g=1, h=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 10 SDslu, 54 SDs, 0 SdLazy, 44 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 0.3s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 1368 SizeOfPredicates, 1 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 0 PerfectInterpolantSequences, 2/8 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...