/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/nested_structure-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:28:33,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:28:33,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:28:33,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-17 22:28:33,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:28:33,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:28:33,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:28:33,742 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 22:28:33,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:28:33,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:28:33,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:28:33,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:28:33,758 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:28:33,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:28:33,759 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:28:33,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:28:33,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:28:33,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:28:33,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:28:33,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:28:33,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:28:33,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:28:33,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:28:33,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:28:33,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:28:33,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:28:33,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:28:33,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:28:33,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:28:33,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:28:33,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:28:33,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:28:33,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:28:33,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:28:33,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:28:33,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:28:33,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:28:33,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:28:34,034 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:28:34,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:28:34,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:28:34,057 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:28:34,057 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:28:34,059 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure-2.i [2020-07-17 22:28:34,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5bd974ef/78ec61157fa747c7a71a60855e95107f/FLAG87eee9e63 [2020-07-17 22:28:34,638 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:28:34,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/nested_structure-2.i [2020-07-17 22:28:34,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5bd974ef/78ec61157fa747c7a71a60855e95107f/FLAG87eee9e63 [2020-07-17 22:28:34,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5bd974ef/78ec61157fa747c7a71a60855e95107f [2020-07-17 22:28:34,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:28:34,993 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:28:34,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:28:34,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:28:34,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:28:35,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:28:34" (1/1) ... [2020-07-17 22:28:35,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e73a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:35, skipping insertion in model container [2020-07-17 22:28:35,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:28:34" (1/1) ... [2020-07-17 22:28:35,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:28:35,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:28:35,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:28:35,242 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:28:35,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:28:35,282 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:28:35,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:35 WrapperNode [2020-07-17 22:28:35,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:28:35,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:28:35,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:28:35,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:28:35,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:35" (1/1) ... [2020-07-17 22:28:35,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:35" (1/1) ... [2020-07-17 22:28:35,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:35" (1/1) ... [2020-07-17 22:28:35,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:35" (1/1) ... [2020-07-17 22:28:35,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:35" (1/1) ... [2020-07-17 22:28:35,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:35" (1/1) ... [2020-07-17 22:28:35,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:35" (1/1) ... [2020-07-17 22:28:35,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:28:35,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:28:35,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:28:35,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:28:35,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:35" (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 22:28:35,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:28:35,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:28:35,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:28:35,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:28:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:28:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:28:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-17 22:28:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-07-17 22:28:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-07-17 22:28:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:28:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 22:28:35,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-17 22:28:35,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-17 22:28:35,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 22:28:35,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:28:35,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:28:35,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:28:35,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:28:35,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:28:35,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 22:28:35,777 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:28:35,777 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:28:35,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:28:35 BoogieIcfgContainer [2020-07-17 22:28:35,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:28:35,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:28:35,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:28:35,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:28:35,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:28:34" (1/3) ... [2020-07-17 22:28:35,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170dd8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:28:35, skipping insertion in model container [2020-07-17 22:28:35,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:35" (2/3) ... [2020-07-17 22:28:35,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170dd8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:28:35, skipping insertion in model container [2020-07-17 22:28:35,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:28:35" (3/3) ... [2020-07-17 22:28:35,792 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure-2.i [2020-07-17 22:28:35,803 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:28:35,811 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:28:35,828 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:28:35,853 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:28:35,853 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:28:35,853 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:28:35,854 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:28:35,854 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:28:35,854 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:28:35,854 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:28:35,854 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:28:35,882 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-17 22:28:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:28:35,890 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:28:35,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:28:35,891 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:28:35,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:28:35,897 INFO L82 PathProgramCache]: Analyzing trace with hash -715594688, now seen corresponding path program 1 times [2020-07-17 22:28:35,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:28:35,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439655662] [2020-07-17 22:28:35,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:28:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:28:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:28:36,380 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {21#true} is VALID [2020-07-17 22:28:36,380 INFO L280 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2020-07-17 22:28:36,383 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #23#return; {21#true} is VALID [2020-07-17 22:28:36,388 INFO L263 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {29#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:28:36,389 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {21#true} is VALID [2020-07-17 22:28:36,389 INFO L280 TraceCheckUtils]: 2: Hoare triple {21#true} assume true; {21#true} is VALID [2020-07-17 22:28:36,390 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {21#true} {21#true} #23#return; {21#true} is VALID [2020-07-17 22:28:36,390 INFO L263 TraceCheckUtils]: 4: Hoare triple {21#true} call #t~ret5 := main(); {21#true} is VALID [2020-07-17 22:28:36,398 INFO L280 TraceCheckUtils]: 5: Hoare triple {21#true} call ~#im~0.base, ~#im~0.offset := #Ultimate.allocOnStack(4);call write~init~int(3, ~#im~0.base, ~#im~0.offset, 4);call ~#inner~0.base, ~#inner~0.offset := #Ultimate.allocOnStack(8);call write~init~int(2, ~#inner~0.base, ~#inner~0.offset, 4);call write~init~$Pointer$(~#im~0.base, ~#im~0.offset, ~#inner~0.base, 4 + ~#inner~0.offset, 4);call ~#good~0.base, ~#good~0.offset := #Ultimate.allocOnStack(8);call write~init~int(1, ~#good~0.base, ~#good~0.offset, 4);call write~init~$Pointer$(~#inner~0.base, ~#inner~0.offset, ~#good~0.base, 4 + ~#good~0.offset, 4);call #t~mem0.base, #t~mem0.offset := read~$Pointer$(~#good~0.base, 4 + ~#good~0.offset, 4);call #t~mem1.base, #t~mem1.offset := read~$Pointer$(#t~mem0.base, 4 + #t~mem0.offset, 4);call write~int(4, #t~mem1.base, #t~mem1.offset, 4);havoc #t~mem0.base, #t~mem0.offset;havoc #t~mem1.base, #t~mem1.offset;call #t~mem2.base, #t~mem2.offset := read~$Pointer$(~#good~0.base, 4 + ~#good~0.offset, 4);call #t~mem3.base, #t~mem3.offset := read~$Pointer$(#t~mem2.base, 4 + #t~mem2.offset, 4);call #t~mem4 := read~int(#t~mem3.base, #t~mem3.offset, 4); {26#(= 4 |main_#t~mem4|)} is VALID [2020-07-17 22:28:36,404 INFO L263 TraceCheckUtils]: 6: Hoare triple {26#(= 4 |main_#t~mem4|)} call __VERIFIER_assert((if 4 == #t~mem4 then 1 else 0)); {27#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-17 22:28:36,405 INFO L280 TraceCheckUtils]: 7: Hoare triple {27#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {28#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-17 22:28:36,406 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {22#false} is VALID [2020-07-17 22:28:36,406 INFO L280 TraceCheckUtils]: 9: Hoare triple {22#false} assume !false; {22#false} is VALID [2020-07-17 22:28:36,409 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 22:28:36,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439655662] [2020-07-17 22:28:36,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:28:36,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 22:28:36,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546527395] [2020-07-17 22:28:36,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-07-17 22:28:36,423 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:28:36,426 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-17 22:28:36,480 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:28:36,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 22:28:36,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:28:36,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 22:28:36,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 22:28:36,495 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-07-17 22:28:36,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:28:36,768 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-17 22:28:36,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 22:28:36,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-07-17 22:28:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:28:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:28:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2020-07-17 22:28:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:28:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2020-07-17 22:28:36,790 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 24 transitions. [2020-07-17 22:28:36,843 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:28:36,851 INFO L225 Difference]: With dead ends: 25 [2020-07-17 22:28:36,851 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 22:28:36,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 22:28:36,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 22:28:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 22:28:36,882 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:28:36,883 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-17 22:28:36,884 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:28:36,884 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:28:36,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:28:36,885 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:28:36,885 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:28:36,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:28:36,886 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:28:36,886 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-17 22:28:36,887 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-17 22:28:36,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:28:36,887 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-17 22:28:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:28:36,888 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:28:36,888 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:28:36,888 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:28:36,888 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:28:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 22:28:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 22:28:36,891 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-17 22:28:36,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:28:36,891 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 22:28:36,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 22:28:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 22:28:36,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:28:36,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:28:36,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 22:28:36,976 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:28:36,976 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-17 22:28:36,976 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:28:36,977 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 22:28:36,977 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 22:28:36,977 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 22:28:36,977 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 22:28:36,978 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (= 4 |main_#t~mem4|) [2020-07-17 22:28:36,978 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-07-17 22:28:36,978 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 27 35) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-17 22:28:36,978 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 35) no Hoare annotation was computed. [2020-07-17 22:28:36,978 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 35) no Hoare annotation was computed. [2020-07-17 22:28:36,979 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-07-17 22:28:36,979 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-07-17 22:28:36,979 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-07-17 22:28:36,979 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-17 22:28:36,979 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-07-17 22:28:36,979 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-07-17 22:28:36,984 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:28:36,992 WARN L170 areAnnotationChecker]: L3 has no Hoare annotation [2020-07-17 22:28:36,992 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:28:36,992 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:28:36,993 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2020-07-17 22:28:36,993 WARN L170 areAnnotationChecker]: L3 has no Hoare annotation [2020-07-17 22:28:36,993 WARN L170 areAnnotationChecker]: L3 has no Hoare annotation [2020-07-17 22:28:36,994 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:28:36,994 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:28:36,994 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2020-07-17 22:28:36,994 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:28:36,994 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-17 22:28:36,995 WARN L170 areAnnotationChecker]: L3-2 has no Hoare annotation [2020-07-17 22:28:36,995 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:28:36,995 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:28:36,995 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:28:36,995 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 22:28:36,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:28:36 BoogieIcfgContainer [2020-07-17 22:28:36,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:28:37,002 INFO L168 Benchmark]: Toolchain (without parser) took 2008.99 ms. Allocated memory was 137.9 MB in the beginning and 233.8 MB in the end (delta: 95.9 MB). Free memory was 103.1 MB in the beginning and 196.4 MB in the end (delta: -93.4 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:37,003 INFO L168 Benchmark]: CDTParser took 1.64 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 22:28:37,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.46 ms. Allocated memory is still 137.9 MB. Free memory was 102.6 MB in the beginning and 92.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:37,005 INFO L168 Benchmark]: Boogie Preprocessor took 142.40 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.0 MB in the beginning and 178.8 MB in the end (delta: -86.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:37,006 INFO L168 Benchmark]: RCFGBuilder took 355.67 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 158.6 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:37,007 INFO L168 Benchmark]: TraceAbstraction took 1214.42 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 158.6 MB in the beginning and 196.4 MB in the end (delta: -37.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 22:28:37,011 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 1.64 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 289.46 ms. Allocated memory is still 137.9 MB. Free memory was 102.6 MB in the beginning and 92.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.40 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.0 MB in the beginning and 178.8 MB in the end (delta: -86.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.67 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 158.6 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1214.42 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 158.6 MB in the beginning and 196.4 MB in the end (delta: -37.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 8 SDslu, 29 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 19 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...