/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/ldv-regression/test14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:29:51,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:29:51,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:29:51,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:29:51,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:29:51,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:29:51,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:29:51,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:29:51,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:29:51,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:29:51,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:29:51,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:29:51,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:29:51,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:29:51,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:29:51,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:29:51,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:29:51,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:29:51,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:29:51,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:29:51,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:29:51,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:29:51,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:29:51,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:29:51,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:29:51,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:29:51,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:29:51,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:29:51,953 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 22:29:51,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:29:51,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:29:51,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:29:51,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:29:51,978 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:29:51,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:29:51,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:29:51,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:29:51,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:29:51,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:29:51,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:29:51,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:29:51,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:29:51,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:29:51,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:29:51,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:29:51,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:29:51,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:29:51,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:29:51,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:29:51,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:29:51,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:29:51,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:29:51,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:29:51,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:29:51,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:29:51,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:29:51,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:29:51,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:29:51,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:29:52,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:29:52,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:29:52,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:29:52,348 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:29:52,348 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:29:52,349 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test14.c [2020-07-17 22:29:52,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a36df8a0/950a55f256724e1caae4688ec2f8a2d8/FLAGb9ab46c3f [2020-07-17 22:29:52,870 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:29:52,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test14.c [2020-07-17 22:29:52,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a36df8a0/950a55f256724e1caae4688ec2f8a2d8/FLAGb9ab46c3f [2020-07-17 22:29:53,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a36df8a0/950a55f256724e1caae4688ec2f8a2d8 [2020-07-17 22:29:53,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:29:53,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:29:53,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:29:53,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:29:53,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:29:53,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:29:53" (1/1) ... [2020-07-17 22:29:53,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a3cdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:53, skipping insertion in model container [2020-07-17 22:29:53,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:29:53" (1/1) ... [2020-07-17 22:29:53,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:29:53,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:29:53,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:29:53,516 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:29:53,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:29:53,553 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:29:53,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:53 WrapperNode [2020-07-17 22:29:53,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:29:53,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:29:53,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:29:53,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:29:53,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:53" (1/1) ... [2020-07-17 22:29:53,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:53" (1/1) ... [2020-07-17 22:29:53,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:53" (1/1) ... [2020-07-17 22:29:53,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:53" (1/1) ... [2020-07-17 22:29:53,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:53" (1/1) ... [2020-07-17 22:29:53,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:53" (1/1) ... [2020-07-17 22:29:53,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:53" (1/1) ... [2020-07-17 22:29:53,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:29:53,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:29:53,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:29:53,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:29:53,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:29:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:29:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:29:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-07-17 22:29:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:29:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:29:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:29:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-17 22:29:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-07-17 22:29:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:29:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 22:29:53,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-17 22:29:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:29:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:29:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:29:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:29:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:29:54,072 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:29:54,073 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:29:54,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:29:54 BoogieIcfgContainer [2020-07-17 22:29:54,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:29:54,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:29:54,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:29:54,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:29:54,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:29:53" (1/3) ... [2020-07-17 22:29:54,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cda8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:29:54, skipping insertion in model container [2020-07-17 22:29:54,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:29:53" (2/3) ... [2020-07-17 22:29:54,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cda8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:29:54, skipping insertion in model container [2020-07-17 22:29:54,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:29:54" (3/3) ... [2020-07-17 22:29:54,092 INFO L109 eAbstractionObserver]: Analyzing ICFG test14.c [2020-07-17 22:29:54,114 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:29:54,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:29:54,149 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:29:54,183 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:29:54,183 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:29:54,183 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:29:54,183 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:29:54,184 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:29:54,184 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:29:54,184 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:29:54,184 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:29:54,209 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-17 22:29:54,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-17 22:29:54,217 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:29:54,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:29:54,219 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:29:54,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:29:54,227 INFO L82 PathProgramCache]: Analyzing trace with hash 521841741, now seen corresponding path program 1 times [2020-07-17 22:29:54,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:29:54,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733894924] [2020-07-17 22:29:54,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:29:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:29:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:29:54,625 INFO L280 TraceCheckUtils]: 0: Hoare triple {36#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4); {25#true} is VALID [2020-07-17 22:29:54,626 INFO L280 TraceCheckUtils]: 1: Hoare triple {25#true} assume true; {25#true} is VALID [2020-07-17 22:29:54,627 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {25#true} {25#true} #38#return; {25#true} is VALID [2020-07-17 22:29:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:29:54,645 INFO L280 TraceCheckUtils]: 0: Hoare triple {25#true} assume 0 != #t~nondet0 % 256;#t~ite1.base, #t~ite1.offset := ~#a~0.base, ~#a~0.offset; {25#true} is VALID [2020-07-17 22:29:54,646 INFO L280 TraceCheckUtils]: 1: Hoare triple {25#true} #res.base, #res.offset := #t~ite1.base, #t~ite1.offset;havoc #t~nondet0;havoc #t~ite1.base, #t~ite1.offset; {25#true} is VALID [2020-07-17 22:29:54,647 INFO L280 TraceCheckUtils]: 2: Hoare triple {25#true} assume true; {25#true} is VALID [2020-07-17 22:29:54,650 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {25#true} {30#(not (= 0 main_~pc~0.base))} #42#return; {30#(not (= 0 main_~pc~0.base))} is VALID [2020-07-17 22:29:54,653 INFO L263 TraceCheckUtils]: 0: Hoare triple {25#true} call ULTIMATE.init(); {36#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|))} is VALID [2020-07-17 22:29:54,654 INFO L280 TraceCheckUtils]: 1: Hoare triple {36#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4); {25#true} is VALID [2020-07-17 22:29:54,654 INFO L280 TraceCheckUtils]: 2: Hoare triple {25#true} assume true; {25#true} is VALID [2020-07-17 22:29:54,655 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} #38#return; {25#true} is VALID [2020-07-17 22:29:54,655 INFO L263 TraceCheckUtils]: 4: Hoare triple {25#true} call #t~ret9 := main(); {25#true} is VALID [2020-07-17 22:29:54,658 INFO L280 TraceCheckUtils]: 5: Hoare triple {25#true} havoc ~a~1;havoc ~b~1;call ~#c~0.base, ~#c~0.offset := #Ultimate.allocOnStack(4);call write~init~int(5, ~#c~0.base, ~#c~0.offset, 4);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;~a~1 := #t~nondet2;havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;~b~1 := #t~nondet3;havoc #t~nondet3;havoc ~pa~0.base, ~pa~0.offset;havoc ~pb~0.base, ~pb~0.offset;~pc~0.base, ~pc~0.offset := ~#c~0.base, ~#c~0.offset; {30#(not (= 0 main_~pc~0.base))} is VALID [2020-07-17 22:29:54,658 INFO L263 TraceCheckUtils]: 6: Hoare triple {30#(not (= 0 main_~pc~0.base))} call #t~ret4.base, #t~ret4.offset := get_dummy(); {25#true} is VALID [2020-07-17 22:29:54,659 INFO L280 TraceCheckUtils]: 7: Hoare triple {25#true} assume 0 != #t~nondet0 % 256;#t~ite1.base, #t~ite1.offset := ~#a~0.base, ~#a~0.offset; {25#true} is VALID [2020-07-17 22:29:54,660 INFO L280 TraceCheckUtils]: 8: Hoare triple {25#true} #res.base, #res.offset := #t~ite1.base, #t~ite1.offset;havoc #t~nondet0;havoc #t~ite1.base, #t~ite1.offset; {25#true} is VALID [2020-07-17 22:29:54,660 INFO L280 TraceCheckUtils]: 9: Hoare triple {25#true} assume true; {25#true} is VALID [2020-07-17 22:29:54,662 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {25#true} {30#(not (= 0 main_~pc~0.base))} #42#return; {30#(not (= 0 main_~pc~0.base))} is VALID [2020-07-17 22:29:54,664 INFO L280 TraceCheckUtils]: 11: Hoare triple {30#(not (= 0 main_~pc~0.base))} ~pb~0.base, ~pb~0.offset := #t~ret4.base, #t~ret4.offset;~pa~0.base, ~pa~0.offset := ~pb~0.base, ~pb~0.offset;havoc #t~ret4.base, #t~ret4.offset;#t~short8 := ~pc~0.base == 0 && ~pc~0.offset == 0; {35#(not |main_#t~short8|)} is VALID [2020-07-17 22:29:54,667 INFO L280 TraceCheckUtils]: 12: Hoare triple {35#(not |main_#t~short8|)} assume #t~short8; {26#false} is VALID [2020-07-17 22:29:54,668 INFO L280 TraceCheckUtils]: 13: Hoare triple {26#false} assume #t~short8;havoc #t~short8;havoc #t~mem5;havoc #t~mem6;havoc #t~short7; {26#false} is VALID [2020-07-17 22:29:54,668 INFO L280 TraceCheckUtils]: 14: Hoare triple {26#false} assume !false; {26#false} is VALID [2020-07-17 22:29:54,671 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 22:29:54,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733894924] [2020-07-17 22:29:54,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:29:54,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 22:29:54,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301599738] [2020-07-17 22:29:54,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-17 22:29:54,687 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:29:54,691 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-17 22:29:54,735 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:29:54,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 22:29:54,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:29:54,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 22:29:54,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 22:29:54,750 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-07-17 22:29:55,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:29:55,020 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-07-17 22:29:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 22:29:55,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-17 22:29:55,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:29:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:29:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2020-07-17 22:29:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:29:55,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2020-07-17 22:29:55,043 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 32 transitions. [2020-07-17 22:29:55,110 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:29:55,123 INFO L225 Difference]: With dead ends: 29 [2020-07-17 22:29:55,124 INFO L226 Difference]: Without dead ends: 18 [2020-07-17 22:29:55,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 22:29:55,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-17 22:29:55,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-17 22:29:55,210 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:29:55,211 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 18 states. [2020-07-17 22:29:55,211 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-17 22:29:55,212 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-17 22:29:55,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:29:55,216 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-17 22:29:55,216 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-17 22:29:55,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:29:55,217 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:29:55,217 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-17 22:29:55,218 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-17 22:29:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:29:55,222 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-17 22:29:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-17 22:29:55,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:29:55,223 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:29:55,223 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:29:55,223 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:29:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-17 22:29:55,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-17 22:29:55,228 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2020-07-17 22:29:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:29:55,229 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-17 22:29:55,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 22:29:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-17 22:29:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-17 22:29:55,230 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:29:55,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:29:55,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:29:55,231 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:29:55,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:29:55,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1019657549, now seen corresponding path program 1 times [2020-07-17 22:29:55,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:29:55,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502392937] [2020-07-17 22:29:55,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:29:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:29:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:29:55,450 INFO L280 TraceCheckUtils]: 0: Hoare triple {151#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4); {139#true} is VALID [2020-07-17 22:29:55,450 INFO L280 TraceCheckUtils]: 1: Hoare triple {139#true} assume true; {139#true} is VALID [2020-07-17 22:29:55,451 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {139#true} {139#true} #38#return; {139#true} is VALID [2020-07-17 22:29:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:29:55,465 INFO L280 TraceCheckUtils]: 0: Hoare triple {139#true} assume 0 != #t~nondet0 % 256;#t~ite1.base, #t~ite1.offset := ~#a~0.base, ~#a~0.offset; {139#true} is VALID [2020-07-17 22:29:55,466 INFO L280 TraceCheckUtils]: 1: Hoare triple {139#true} #res.base, #res.offset := #t~ite1.base, #t~ite1.offset;havoc #t~nondet0;havoc #t~ite1.base, #t~ite1.offset; {139#true} is VALID [2020-07-17 22:29:55,466 INFO L280 TraceCheckUtils]: 2: Hoare triple {139#true} assume true; {139#true} is VALID [2020-07-17 22:29:55,466 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {139#true} {139#true} #42#return; {139#true} is VALID [2020-07-17 22:29:55,469 INFO L263 TraceCheckUtils]: 0: Hoare triple {139#true} call ULTIMATE.init(); {151#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|))} is VALID [2020-07-17 22:29:55,469 INFO L280 TraceCheckUtils]: 1: Hoare triple {151#(and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#a~0.base, ~#a~0.offset, 4);call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4);call write~init~int(0, ~#b~0.base, ~#b~0.offset, 4); {139#true} is VALID [2020-07-17 22:29:55,469 INFO L280 TraceCheckUtils]: 2: Hoare triple {139#true} assume true; {139#true} is VALID [2020-07-17 22:29:55,470 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {139#true} {139#true} #38#return; {139#true} is VALID [2020-07-17 22:29:55,470 INFO L263 TraceCheckUtils]: 4: Hoare triple {139#true} call #t~ret9 := main(); {139#true} is VALID [2020-07-17 22:29:55,470 INFO L280 TraceCheckUtils]: 5: Hoare triple {139#true} havoc ~a~1;havoc ~b~1;call ~#c~0.base, ~#c~0.offset := #Ultimate.allocOnStack(4);call write~init~int(5, ~#c~0.base, ~#c~0.offset, 4);assume -2147483648 <= #t~nondet2 && #t~nondet2 <= 2147483647;~a~1 := #t~nondet2;havoc #t~nondet2;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;~b~1 := #t~nondet3;havoc #t~nondet3;havoc ~pa~0.base, ~pa~0.offset;havoc ~pb~0.base, ~pb~0.offset;~pc~0.base, ~pc~0.offset := ~#c~0.base, ~#c~0.offset; {139#true} is VALID [2020-07-17 22:29:55,471 INFO L263 TraceCheckUtils]: 6: Hoare triple {139#true} call #t~ret4.base, #t~ret4.offset := get_dummy(); {139#true} is VALID [2020-07-17 22:29:55,471 INFO L280 TraceCheckUtils]: 7: Hoare triple {139#true} assume 0 != #t~nondet0 % 256;#t~ite1.base, #t~ite1.offset := ~#a~0.base, ~#a~0.offset; {139#true} is VALID [2020-07-17 22:29:55,471 INFO L280 TraceCheckUtils]: 8: Hoare triple {139#true} #res.base, #res.offset := #t~ite1.base, #t~ite1.offset;havoc #t~nondet0;havoc #t~ite1.base, #t~ite1.offset; {139#true} is VALID [2020-07-17 22:29:55,472 INFO L280 TraceCheckUtils]: 9: Hoare triple {139#true} assume true; {139#true} is VALID [2020-07-17 22:29:55,472 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {139#true} {139#true} #42#return; {139#true} is VALID [2020-07-17 22:29:55,473 INFO L280 TraceCheckUtils]: 11: Hoare triple {139#true} ~pb~0.base, ~pb~0.offset := #t~ret4.base, #t~ret4.offset;~pa~0.base, ~pa~0.offset := ~pb~0.base, ~pb~0.offset;havoc #t~ret4.base, #t~ret4.offset;#t~short8 := ~pc~0.base == 0 && ~pc~0.offset == 0; {148#(and (= main_~pb~0.offset main_~pa~0.offset) (= main_~pa~0.base main_~pb~0.base))} is VALID [2020-07-17 22:29:55,475 INFO L280 TraceCheckUtils]: 12: Hoare triple {148#(and (= main_~pb~0.offset main_~pa~0.offset) (= main_~pa~0.base main_~pb~0.base))} assume !#t~short8;#t~short7 := ~pa~0.base == ~pb~0.base && ~pa~0.offset == ~pb~0.offset; {148#(and (= main_~pb~0.offset main_~pa~0.offset) (= main_~pa~0.base main_~pb~0.base))} is VALID [2020-07-17 22:29:55,476 INFO L280 TraceCheckUtils]: 13: Hoare triple {148#(and (= main_~pb~0.offset main_~pa~0.offset) (= main_~pa~0.base main_~pb~0.base))} assume #t~short7;call #t~mem5 := read~int(~pa~0.base, ~pa~0.offset, 4);call #t~mem6 := read~int(~pb~0.base, ~pb~0.offset, 4);#t~short7 := #t~mem5 != #t~mem6; {149#(not |main_#t~short7|)} is VALID [2020-07-17 22:29:55,478 INFO L280 TraceCheckUtils]: 14: Hoare triple {149#(not |main_#t~short7|)} #t~short8 := #t~short7; {150#(not |main_#t~short8|)} is VALID [2020-07-17 22:29:55,480 INFO L280 TraceCheckUtils]: 15: Hoare triple {150#(not |main_#t~short8|)} assume #t~short8;havoc #t~short8;havoc #t~mem5;havoc #t~mem6;havoc #t~short7; {140#false} is VALID [2020-07-17 22:29:55,480 INFO L280 TraceCheckUtils]: 16: Hoare triple {140#false} assume !false; {140#false} is VALID [2020-07-17 22:29:55,485 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 22:29:55,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502392937] [2020-07-17 22:29:55,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:29:55,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 22:29:55,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528853976] [2020-07-17 22:29:55,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-17 22:29:55,492 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:29:55,492 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-17 22:29:55,524 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:29:55,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 22:29:55,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:29:55,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 22:29:55,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 22:29:55,526 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-07-17 22:29:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:29:55,757 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-07-17 22:29:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 22:29:55,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-17 22:29:55,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:29:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:29:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2020-07-17 22:29:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:29:55,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2020-07-17 22:29:55,762 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 19 transitions. [2020-07-17 22:29:55,794 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:29:55,795 INFO L225 Difference]: With dead ends: 18 [2020-07-17 22:29:55,795 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 22:29:55,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 22:29:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 22:29:55,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 22:29:55,797 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:29:55,797 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:55,797 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:55,798 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:29:55,798 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:29:55,798 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:29:55,798 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:29:55,799 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:29:55,799 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:55,799 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:29:55,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:29:55,800 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:29:55,800 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:29:55,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:29:55,800 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:29:55,800 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:29:55,801 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:29:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 22:29:55,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 22:29:55,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-07-17 22:29:55,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:29:55,802 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 22:29:55,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 22:29:55,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:29:55,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:29:55,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:29:55,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 22:29:55,888 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:29:55,889 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#a~0.base| |old(~#a~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#valid| |old(#valid)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |old(#length)| |#length|)) [2020-07-17 22:29:55,889 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:29:55,889 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 7 10) no Hoare annotation was computed. [2020-07-17 22:29:55,889 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-07-17 22:29:55,890 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 7 10) the Hoare annotation is: true [2020-07-17 22:29:55,890 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 7 10) no Hoare annotation was computed. [2020-07-17 22:29:55,890 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:29:55,890 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 22:29:55,891 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 22:29:55,891 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:29:55,891 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-07-17 22:29:55,891 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 27) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)) [2020-07-17 22:29:55,891 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2020-07-17 22:29:55,892 INFO L264 CegarLoopResult]: At program point L20(lines 12 27) the Hoare annotation is: false [2020-07-17 22:29:55,892 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-07-17 22:29:55,892 INFO L268 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-07-17 22:29:55,892 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (not (= 0 main_~pc~0.base)) [2020-07-17 22:29:55,892 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-07-17 22:29:55,892 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-07-17 22:29:55,893 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 21) no Hoare annotation was computed. [2020-07-17 22:29:55,893 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2020-07-17 22:29:55,898 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:29:55,903 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-17 22:29:55,903 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-17 22:29:55,904 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:29:55,905 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:29:55,905 WARN L170 areAnnotationChecker]: L9-1 has no Hoare annotation [2020-07-17 22:29:55,906 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-17 22:29:55,906 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:29:55,906 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:29:55,906 WARN L170 areAnnotationChecker]: get_dummyFINAL has no Hoare annotation [2020-07-17 22:29:55,906 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-17 22:29:55,906 WARN L170 areAnnotationChecker]: get_dummyEXIT has no Hoare annotation [2020-07-17 22:29:55,907 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-17 22:29:55,907 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-17 22:29:55,907 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-17 22:29:55,907 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-17 22:29:55,907 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-17 22:29:55,907 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-17 22:29:55,907 WARN L170 areAnnotationChecker]: mainErr0ASSERT_VIOLATIONERROR_FUNCTION has no Hoare annotation [2020-07-17 22:29:55,908 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:29:55,908 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:29:55,908 WARN L170 areAnnotationChecker]: L19-2 has no Hoare annotation [2020-07-17 22:29:55,908 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:29:55,908 INFO L163 areAnnotationChecker]: CFG has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:29:55,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:29:55 BoogieIcfgContainer [2020-07-17 22:29:55,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:29:55,922 INFO L168 Benchmark]: Toolchain (without parser) took 2653.11 ms. Allocated memory was 137.9 MB in the beginning and 233.8 MB in the end (delta: 95.9 MB). Free memory was 102.8 MB in the beginning and 119.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:55,923 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 22:29:55,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.09 ms. Allocated memory is still 137.9 MB. Free memory was 102.3 MB in the beginning and 92.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:55,925 INFO L168 Benchmark]: Boogie Preprocessor took 119.16 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.3 MB in the beginning and 180.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:55,926 INFO L168 Benchmark]: RCFGBuilder took 405.02 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 158.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:55,927 INFO L168 Benchmark]: TraceAbstraction took 1835.67 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 158.1 MB in the beginning and 119.5 MB in the end (delta: 38.6 MB). Peak memory consumption was 70.6 MB. Max. memory is 7.1 GB. [2020-07-17 22:29:55,931 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 0.51 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.09 ms. Allocated memory is still 137.9 MB. Free memory was 102.3 MB in the beginning and 92.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.16 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 92.3 MB in the beginning and 180.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 405.02 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 158.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1835.67 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 158.1 MB in the beginning and 119.5 MB in the end (delta: 38.6 MB). Peak memory consumption was 70.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 24 SDslu, 42 SDs, 0 SdLazy, 67 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 40 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1494 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...