/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/trex03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:45:30,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:45:30,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:45:31,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:45:31,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:45:31,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:45:31,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:45:31,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:45:31,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:45:31,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:45:31,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:45:31,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:45:31,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:45:31,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:45:31,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:45:31,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:45:31,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:45:31,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:45:31,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:45:31,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:45:31,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:45:31,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:45:31,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:45:31,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:45:31,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:45:31,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:45:31,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:45:31,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:45:31,123 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 [2020-11-06 22:45:31,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:45:31,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:45:31,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:45:31,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:45:31,151 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:45:31,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:45:31,152 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:45:31,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:45:31,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:45:31,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:45:31,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:45:31,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:45:31,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:45:31,153 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:45:31,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:45:31,153 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:45:31,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:45:31,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:45:31,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:45:31,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:45:31,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:45:31,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:45:31,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:45:31,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:45:31,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:45:31,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:45:31,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:45:31,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:45:31,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:45:31,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:45:31,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:45:31,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:45:31,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:45:31,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:45:31,576 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:45:31,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-2.c [2020-11-06 22:45:31,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/363f6b8b7/fdac04ff56514ef09766322e810b3546/FLAGdd26c510d [2020-11-06 22:45:32,365 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:45:32,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-2.c [2020-11-06 22:45:32,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/363f6b8b7/fdac04ff56514ef09766322e810b3546/FLAGdd26c510d [2020-11-06 22:45:32,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/363f6b8b7/fdac04ff56514ef09766322e810b3546 [2020-11-06 22:45:32,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:45:32,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:45:32,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:32,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:45:32,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:45:32,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:32,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0dd059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32, skipping insertion in model container [2020-11-06 22:45:32,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:32,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:45:32,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:45:32,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:32,955 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:45:32,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:32,991 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:45:32,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32 WrapperNode [2020-11-06 22:45:32,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:32,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:45:32,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:45:32,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:45:33,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:33,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:33,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:33,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:33,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:33,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:33,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:33,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:45:33,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:45:33,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:45:33,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:45:33,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (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 [2020-11-06 22:45:33,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:45:33,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:45:33,119 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:45:33,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:45:33,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:45:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:45:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:45:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:45:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:45:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:45:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-06 22:45:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-06 22:45:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:45:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:45:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:45:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:45:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:45:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:45:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:45:33,524 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:45:33,524 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:45:33,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:33 BoogieIcfgContainer [2020-11-06 22:45:33,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:45:33,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:45:33,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:45:33,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:45:33,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:45:32" (1/3) ... [2020-11-06 22:45:33,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4a48ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:33, skipping insertion in model container [2020-11-06 22:45:33,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (2/3) ... [2020-11-06 22:45:33,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4a48ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:33, skipping insertion in model container [2020-11-06 22:45:33,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:33" (3/3) ... [2020-11-06 22:45:33,541 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-2.c [2020-11-06 22:45:33,558 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:45:33,561 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:45:33,573 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:45:33,613 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:45:33,614 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:45:33,614 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:45:33,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:45:33,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:45:33,615 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:45:33,615 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:45:33,616 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:45:33,641 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-06 22:45:33,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-06 22:45:33,649 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:33,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:33,652 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:33,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1834290772, now seen corresponding path program 1 times [2020-11-06 22:45:33,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:33,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553289537] [2020-11-06 22:45:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:34,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:34,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553289537] [2020-11-06 22:45:34,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:34,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:45:34,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990404001] [2020-11-06 22:45:34,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:45:34,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:34,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:45:34,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:45:34,059 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-11-06 22:45:34,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:34,142 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-11-06 22:45:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:45:34,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-06 22:45:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:34,152 INFO L225 Difference]: With dead ends: 39 [2020-11-06 22:45:34,153 INFO L226 Difference]: Without dead ends: 16 [2020-11-06 22:45:34,156 INFO L677 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 [2020-11-06 22:45:34,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-06 22:45:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-06 22:45:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-06 22:45:34,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-06 22:45:34,198 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-11-06 22:45:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:34,199 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-06 22:45:34,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:45:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-06 22:45:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-06 22:45:34,200 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:34,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:34,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:45:34,201 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:34,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:34,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1376224356, now seen corresponding path program 1 times [2020-11-06 22:45:34,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:34,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251666901] [2020-11-06 22:45:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:34,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:34,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251666901] [2020-11-06 22:45:34,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:34,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:45:34,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209885508] [2020-11-06 22:45:34,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:45:34,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:34,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:45:34,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:45:34,385 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-11-06 22:45:34,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:34,583 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-11-06 22:45:34,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:45:34,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-06 22:45:34,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:34,585 INFO L225 Difference]: With dead ends: 16 [2020-11-06 22:45:34,585 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:45:34,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:45:34,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:45:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:45:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:45:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:45:34,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-06 22:45:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:34,588 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:45:34,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:45:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:45:34,588 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:45:34,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:45:34,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:45:34,717 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-11-06 22:45:34,718 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-06 22:45:34,718 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-11-06 22:45:34,718 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-06 22:45:34,718 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:45:34,719 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-06 22:45:34,719 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:45:34,719 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:45:34,719 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:45:34,720 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:45:34,720 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:45:34,720 INFO L266 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-11-06 22:45:34,720 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 14 31) no Hoare annotation was computed. [2020-11-06 22:45:34,720 INFO L266 CegarLoopResult]: For program point L23(lines 23 24) no Hoare annotation was computed. [2020-11-06 22:45:34,720 INFO L266 CegarLoopResult]: For program point L23-2(lines 22 24) no Hoare annotation was computed. [2020-11-06 22:45:34,721 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 14 31) no Hoare annotation was computed. [2020-11-06 22:45:34,721 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 14 31) the Hoare annotation is: true [2020-11-06 22:45:34,721 INFO L266 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-11-06 22:45:34,721 INFO L269 CegarLoopResult]: At program point L20-2(lines 20 27) the Hoare annotation is: true [2020-11-06 22:45:34,722 INFO L262 CegarLoopResult]: At program point L20-3(lines 20 27) the Hoare annotation is: (or (= (* (div main_~x3~0 4294967296) 4294967296) main_~x3~0) (= main_~x2~0 (* (div main_~x2~0 4294967296) 4294967296)) (= (* (div main_~x1~0 4294967296) 4294967296) main_~x1~0)) [2020-11-06 22:45:34,722 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-11-06 22:45:34,722 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-11-06 22:45:34,722 INFO L262 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-06 22:45:34,722 INFO L266 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-11-06 22:45:34,722 INFO L266 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-11-06 22:45:34,723 INFO L266 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-11-06 22:45:34,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:34 BoogieIcfgContainer [2020-11-06 22:45:34,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:45:34,736 INFO L168 Benchmark]: Toolchain (without parser) took 1995.64 ms. Allocated memory is still 152.0 MB. Free memory was 127.8 MB in the beginning and 68.7 MB in the end (delta: 59.1 MB). Peak memory consumption was 61.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:34,737 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:45:34,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.56 ms. Allocated memory is still 152.0 MB. Free memory was 127.2 MB in the beginning and 117.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:34,739 INFO L168 Benchmark]: Boogie Preprocessor took 37.36 ms. Allocated memory is still 152.0 MB. Free memory was 117.4 MB in the beginning and 116.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:34,740 INFO L168 Benchmark]: RCFGBuilder took 494.99 ms. Allocated memory is still 152.0 MB. Free memory was 115.9 MB in the beginning and 102.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:34,741 INFO L168 Benchmark]: TraceAbstraction took 1203.15 ms. Allocated memory is still 152.0 MB. Free memory was 101.7 MB in the beginning and 68.7 MB in the end (delta: 33.0 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:34,746 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 152.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 243.56 ms. Allocated memory is still 152.0 MB. Free memory was 127.2 MB in the beginning and 117.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.36 ms. Allocated memory is still 152.0 MB. Free memory was 117.4 MB in the beginning and 116.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 494.99 ms. Allocated memory is still 152.0 MB. Free memory was 115.9 MB in the beginning and 102.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1203.15 ms. Allocated memory is still 152.0 MB. Free memory was 101.7 MB in the beginning and 68.7 MB in the end (delta: 33.0 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 25 SDslu, 19 SDs, 0 SdLazy, 34 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 13 NumberOfFragments, 62 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 129 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 correct! Received shutdown request...