/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:47:20,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:47:20,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:47:20,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:47:20,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:47:20,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:47:20,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:47:20,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:47:20,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:47:20,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:47:20,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:47:20,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:47:20,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:47:20,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:47:20,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:47:20,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:47:20,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:47:20,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:47:20,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:47:20,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:47:20,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:47:20,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:47:20,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:47:20,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:47:20,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:47:20,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:47:20,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:47:20,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:47:20,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:47:20,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:47:20,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:47:20,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:47:20,838 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:47:20,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:47:20,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:47:20,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:47:20,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:47:20,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:47:20,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:47:20,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:47:20,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:47:20,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:47:20,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:47:20,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:47:20,840 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:47:20,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:47:20,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:47:20,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:47:20,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:47:20,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:47:20,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:47:20,843 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:47:21,107 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:47:21,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:47:21,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:47:21,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:47:21,128 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:47:21,128 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp2f.c [2020-07-18 00:47:21,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0050da40b/05d2e54ec3804b7bbea60f80f5d613d5/FLAGc2debfee9 [2020-07-18 00:47:21,603 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:47:21,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp2f.c [2020-07-18 00:47:21,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0050da40b/05d2e54ec3804b7bbea60f80f5d613d5/FLAGc2debfee9 [2020-07-18 00:47:22,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0050da40b/05d2e54ec3804b7bbea60f80f5d613d5 [2020-07-18 00:47:22,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:47:22,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:47:22,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:22,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:47:22,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:47:22,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:22" (1/1) ... [2020-07-18 00:47:22,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c045c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:22, skipping insertion in model container [2020-07-18 00:47:22,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:22" (1/1) ... [2020-07-18 00:47:22,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:47:22,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:47:22,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:22,287 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:47:22,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:22,322 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:47:22,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:22 WrapperNode [2020-07-18 00:47:22,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:22,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:47:22,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:47:22,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:47:22,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:22" (1/1) ... [2020-07-18 00:47:22,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:22" (1/1) ... [2020-07-18 00:47:22,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:22" (1/1) ... [2020-07-18 00:47:22,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:22" (1/1) ... [2020-07-18 00:47:22,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:22" (1/1) ... [2020-07-18 00:47:22,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:22" (1/1) ... [2020-07-18 00:47:22,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:22" (1/1) ... [2020-07-18 00:47:22,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:47:22,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:47:22,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:47:22,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:47:22,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:22" (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 [2020-07-18 00:47:22,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:47:22,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:47:22,510 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 00:47:22,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:47:22,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:47:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:47:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:47:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 00:47:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:47:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:47:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-18 00:47:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:47:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-18 00:47:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:47:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:47:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:47:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:47:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:47:22,925 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:47:22,925 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-18 00:47:22,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:22 BoogieIcfgContainer [2020-07-18 00:47:22,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:47:22,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:47:22,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:47:22,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:47:22,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:47:22" (1/3) ... [2020-07-18 00:47:22,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54eec4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:22, skipping insertion in model container [2020-07-18 00:47:22,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:22" (2/3) ... [2020-07-18 00:47:22,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54eec4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:22, skipping insertion in model container [2020-07-18 00:47:22,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:22" (3/3) ... [2020-07-18 00:47:22,938 INFO L109 eAbstractionObserver]: Analyzing ICFG indp2f.c [2020-07-18 00:47:22,948 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:47:22,955 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:47:22,969 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:47:22,988 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:47:22,989 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:47:22,989 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:47:22,989 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:47:22,989 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:47:22,989 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:47:22,990 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:47:22,990 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:47:23,005 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-07-18 00:47:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-18 00:47:23,015 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:23,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:47:23,016 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:23,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:23,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1846170158, now seen corresponding path program 1 times [2020-07-18 00:47:23,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:23,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73052234] [2020-07-18 00:47:23,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:23,258 INFO L280 TraceCheckUtils]: 0: Hoare triple {78#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {66#true} is VALID [2020-07-18 00:47:23,259 INFO L280 TraceCheckUtils]: 1: Hoare triple {66#true} #valid := #valid[0 := 0]; {66#true} is VALID [2020-07-18 00:47:23,259 INFO L280 TraceCheckUtils]: 2: Hoare triple {66#true} assume 0 < #StackHeapBarrier; {66#true} is VALID [2020-07-18 00:47:23,260 INFO L280 TraceCheckUtils]: 3: Hoare triple {66#true} ~N~0 := 0; {66#true} is VALID [2020-07-18 00:47:23,260 INFO L280 TraceCheckUtils]: 4: Hoare triple {66#true} assume true; {66#true} is VALID [2020-07-18 00:47:23,261 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {66#true} {66#true} #121#return; {66#true} is VALID [2020-07-18 00:47:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:23,271 INFO L280 TraceCheckUtils]: 0: Hoare triple {66#true} ~cond := #in~cond; {66#true} is VALID [2020-07-18 00:47:23,271 INFO L280 TraceCheckUtils]: 1: Hoare triple {66#true} assume !(0 == ~cond); {66#true} is VALID [2020-07-18 00:47:23,272 INFO L280 TraceCheckUtils]: 2: Hoare triple {66#true} assume true; {66#true} is VALID [2020-07-18 00:47:23,272 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {66#true} {66#true} #117#return; {66#true} is VALID [2020-07-18 00:47:23,274 INFO L263 TraceCheckUtils]: 0: Hoare triple {66#true} call ULTIMATE.init(); {78#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:23,275 INFO L280 TraceCheckUtils]: 1: Hoare triple {78#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {66#true} is VALID [2020-07-18 00:47:23,275 INFO L280 TraceCheckUtils]: 2: Hoare triple {66#true} #valid := #valid[0 := 0]; {66#true} is VALID [2020-07-18 00:47:23,276 INFO L280 TraceCheckUtils]: 3: Hoare triple {66#true} assume 0 < #StackHeapBarrier; {66#true} is VALID [2020-07-18 00:47:23,276 INFO L280 TraceCheckUtils]: 4: Hoare triple {66#true} ~N~0 := 0; {66#true} is VALID [2020-07-18 00:47:23,276 INFO L280 TraceCheckUtils]: 5: Hoare triple {66#true} assume true; {66#true} is VALID [2020-07-18 00:47:23,277 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {66#true} {66#true} #121#return; {66#true} is VALID [2020-07-18 00:47:23,277 INFO L263 TraceCheckUtils]: 7: Hoare triple {66#true} call #t~ret9 := main(); {66#true} is VALID [2020-07-18 00:47:23,278 INFO L280 TraceCheckUtils]: 8: Hoare triple {66#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {66#true} is VALID [2020-07-18 00:47:23,278 INFO L280 TraceCheckUtils]: 9: Hoare triple {66#true} ~N~0 := #t~nondet0; {66#true} is VALID [2020-07-18 00:47:23,279 INFO L280 TraceCheckUtils]: 10: Hoare triple {66#true} havoc #t~nondet0; {66#true} is VALID [2020-07-18 00:47:23,279 INFO L280 TraceCheckUtils]: 11: Hoare triple {66#true} assume !(~N~0 <= 0); {66#true} is VALID [2020-07-18 00:47:23,280 INFO L263 TraceCheckUtils]: 12: Hoare triple {66#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {66#true} is VALID [2020-07-18 00:47:23,280 INFO L280 TraceCheckUtils]: 13: Hoare triple {66#true} ~cond := #in~cond; {66#true} is VALID [2020-07-18 00:47:23,281 INFO L280 TraceCheckUtils]: 14: Hoare triple {66#true} assume !(0 == ~cond); {66#true} is VALID [2020-07-18 00:47:23,281 INFO L280 TraceCheckUtils]: 15: Hoare triple {66#true} assume true; {66#true} is VALID [2020-07-18 00:47:23,281 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {66#true} {66#true} #117#return; {66#true} is VALID [2020-07-18 00:47:23,282 INFO L280 TraceCheckUtils]: 17: Hoare triple {66#true} havoc ~i~0; {66#true} is VALID [2020-07-18 00:47:23,282 INFO L280 TraceCheckUtils]: 18: Hoare triple {66#true} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0); srcloc: L26 {66#true} is VALID [2020-07-18 00:47:23,283 INFO L280 TraceCheckUtils]: 19: Hoare triple {66#true} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {66#true} is VALID [2020-07-18 00:47:23,283 INFO L280 TraceCheckUtils]: 20: Hoare triple {66#true} ~i~0 := 0; {66#true} is VALID [2020-07-18 00:47:23,284 INFO L280 TraceCheckUtils]: 21: Hoare triple {66#true} assume !true; {67#false} is VALID [2020-07-18 00:47:23,285 INFO L280 TraceCheckUtils]: 22: Hoare triple {67#false} ~i~0 := 0; {67#false} is VALID [2020-07-18 00:47:23,285 INFO L280 TraceCheckUtils]: 23: Hoare triple {67#false} assume !true; {67#false} is VALID [2020-07-18 00:47:23,286 INFO L280 TraceCheckUtils]: 24: Hoare triple {67#false} ~i~0 := 0; {67#false} is VALID [2020-07-18 00:47:23,286 INFO L280 TraceCheckUtils]: 25: Hoare triple {67#false} assume !true; {67#false} is VALID [2020-07-18 00:47:23,287 INFO L280 TraceCheckUtils]: 26: Hoare triple {67#false} ~i~0 := 0; {67#false} is VALID [2020-07-18 00:47:23,287 INFO L280 TraceCheckUtils]: 27: Hoare triple {67#false} assume !!(~i~0 < ~N~0); {67#false} is VALID [2020-07-18 00:47:23,291 INFO L280 TraceCheckUtils]: 28: Hoare triple {67#false} SUMMARY for call #t~mem8 := read~int(~a~0.base, ~a~0.offset + 8 * ~i~0, 8); srcloc: L45 {67#false} is VALID [2020-07-18 00:47:23,291 INFO L263 TraceCheckUtils]: 29: Hoare triple {67#false} call __VERIFIER_assert((if 0 == #t~mem8 then 1 else 0)); {67#false} is VALID [2020-07-18 00:47:23,292 INFO L280 TraceCheckUtils]: 30: Hoare triple {67#false} ~cond := #in~cond; {67#false} is VALID [2020-07-18 00:47:23,292 INFO L280 TraceCheckUtils]: 31: Hoare triple {67#false} assume 0 == ~cond; {67#false} is VALID [2020-07-18 00:47:23,292 INFO L280 TraceCheckUtils]: 32: Hoare triple {67#false} assume !false; {67#false} is VALID [2020-07-18 00:47:23,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:47:23,303 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:23,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73052234] [2020-07-18 00:47:23,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:23,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 00:47:23,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976763293] [2020-07-18 00:47:23,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-18 00:47:23,317 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:23,321 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 00:47:23,375 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:23,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 00:47:23,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:23,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 00:47:23,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:47:23,388 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2020-07-18 00:47:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:23,738 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2020-07-18 00:47:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 00:47:23,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-18 00:47:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2020-07-18 00:47:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:23,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2020-07-18 00:47:23,759 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 128 transitions. [2020-07-18 00:47:23,920 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 128 edges. 128 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:23,935 INFO L225 Difference]: With dead ends: 109 [2020-07-18 00:47:23,935 INFO L226 Difference]: Without dead ends: 56 [2020-07-18 00:47:23,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:47:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-18 00:47:24,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-18 00:47:24,031 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:24,032 INFO L82 GeneralOperation]: Start isEquivalent. First operand 56 states. Second operand 56 states. [2020-07-18 00:47:24,032 INFO L74 IsIncluded]: Start isIncluded. First operand 56 states. Second operand 56 states. [2020-07-18 00:47:24,033 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 56 states. [2020-07-18 00:47:24,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:24,039 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-07-18 00:47:24,039 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-07-18 00:47:24,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:24,040 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:24,041 INFO L74 IsIncluded]: Start isIncluded. First operand 56 states. Second operand 56 states. [2020-07-18 00:47:24,041 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 56 states. [2020-07-18 00:47:24,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:24,047 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-07-18 00:47:24,047 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-07-18 00:47:24,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:24,048 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:24,049 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:24,049 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:24,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-18 00:47:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-07-18 00:47:24,055 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 33 [2020-07-18 00:47:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:24,055 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-07-18 00:47:24,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 00:47:24,056 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 56 states and 59 transitions. [2020-07-18 00:47:24,131 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-07-18 00:47:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-18 00:47:24,133 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:24,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:47:24,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:47:24,134 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:24,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1457656721, now seen corresponding path program 1 times [2020-07-18 00:47:24,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:24,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367175249] [2020-07-18 00:47:24,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:24,285 INFO L280 TraceCheckUtils]: 0: Hoare triple {537#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {523#true} is VALID [2020-07-18 00:47:24,286 INFO L280 TraceCheckUtils]: 1: Hoare triple {523#true} #valid := #valid[0 := 0]; {523#true} is VALID [2020-07-18 00:47:24,286 INFO L280 TraceCheckUtils]: 2: Hoare triple {523#true} assume 0 < #StackHeapBarrier; {523#true} is VALID [2020-07-18 00:47:24,286 INFO L280 TraceCheckUtils]: 3: Hoare triple {523#true} ~N~0 := 0; {523#true} is VALID [2020-07-18 00:47:24,287 INFO L280 TraceCheckUtils]: 4: Hoare triple {523#true} assume true; {523#true} is VALID [2020-07-18 00:47:24,287 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {523#true} {523#true} #121#return; {523#true} is VALID [2020-07-18 00:47:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:24,306 INFO L280 TraceCheckUtils]: 0: Hoare triple {523#true} ~cond := #in~cond; {523#true} is VALID [2020-07-18 00:47:24,307 INFO L280 TraceCheckUtils]: 1: Hoare triple {523#true} assume !(0 == ~cond); {523#true} is VALID [2020-07-18 00:47:24,307 INFO L280 TraceCheckUtils]: 2: Hoare triple {523#true} assume true; {523#true} is VALID [2020-07-18 00:47:24,311 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {523#true} {531#(<= 1 ~N~0)} #117#return; {531#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:24,312 INFO L263 TraceCheckUtils]: 0: Hoare triple {523#true} call ULTIMATE.init(); {537#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:24,313 INFO L280 TraceCheckUtils]: 1: Hoare triple {537#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {523#true} is VALID [2020-07-18 00:47:24,313 INFO L280 TraceCheckUtils]: 2: Hoare triple {523#true} #valid := #valid[0 := 0]; {523#true} is VALID [2020-07-18 00:47:24,313 INFO L280 TraceCheckUtils]: 3: Hoare triple {523#true} assume 0 < #StackHeapBarrier; {523#true} is VALID [2020-07-18 00:47:24,313 INFO L280 TraceCheckUtils]: 4: Hoare triple {523#true} ~N~0 := 0; {523#true} is VALID [2020-07-18 00:47:24,314 INFO L280 TraceCheckUtils]: 5: Hoare triple {523#true} assume true; {523#true} is VALID [2020-07-18 00:47:24,314 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {523#true} {523#true} #121#return; {523#true} is VALID [2020-07-18 00:47:24,314 INFO L263 TraceCheckUtils]: 7: Hoare triple {523#true} call #t~ret9 := main(); {523#true} is VALID [2020-07-18 00:47:24,314 INFO L280 TraceCheckUtils]: 8: Hoare triple {523#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {523#true} is VALID [2020-07-18 00:47:24,315 INFO L280 TraceCheckUtils]: 9: Hoare triple {523#true} ~N~0 := #t~nondet0; {523#true} is VALID [2020-07-18 00:47:24,315 INFO L280 TraceCheckUtils]: 10: Hoare triple {523#true} havoc #t~nondet0; {523#true} is VALID [2020-07-18 00:47:24,320 INFO L280 TraceCheckUtils]: 11: Hoare triple {523#true} assume !(~N~0 <= 0); {531#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:24,321 INFO L263 TraceCheckUtils]: 12: Hoare triple {531#(<= 1 ~N~0)} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {523#true} is VALID [2020-07-18 00:47:24,321 INFO L280 TraceCheckUtils]: 13: Hoare triple {523#true} ~cond := #in~cond; {523#true} is VALID [2020-07-18 00:47:24,321 INFO L280 TraceCheckUtils]: 14: Hoare triple {523#true} assume !(0 == ~cond); {523#true} is VALID [2020-07-18 00:47:24,322 INFO L280 TraceCheckUtils]: 15: Hoare triple {523#true} assume true; {523#true} is VALID [2020-07-18 00:47:24,324 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {523#true} {531#(<= 1 ~N~0)} #117#return; {531#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:24,325 INFO L280 TraceCheckUtils]: 17: Hoare triple {531#(<= 1 ~N~0)} havoc ~i~0; {531#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:24,326 INFO L280 TraceCheckUtils]: 18: Hoare triple {531#(<= 1 ~N~0)} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0); srcloc: L26 {531#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:24,327 INFO L280 TraceCheckUtils]: 19: Hoare triple {531#(<= 1 ~N~0)} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {531#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:24,328 INFO L280 TraceCheckUtils]: 20: Hoare triple {531#(<= 1 ~N~0)} ~i~0 := 0; {536#(and (= 0 main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-18 00:47:24,329 INFO L280 TraceCheckUtils]: 21: Hoare triple {536#(and (= 0 main_~i~0) (<= 1 ~N~0))} assume !(~i~0 < ~N~0); {524#false} is VALID [2020-07-18 00:47:24,329 INFO L280 TraceCheckUtils]: 22: Hoare triple {524#false} ~i~0 := 0; {524#false} is VALID [2020-07-18 00:47:24,330 INFO L280 TraceCheckUtils]: 23: Hoare triple {524#false} assume !(~i~0 < ~N~0); {524#false} is VALID [2020-07-18 00:47:24,330 INFO L280 TraceCheckUtils]: 24: Hoare triple {524#false} ~i~0 := 0; {524#false} is VALID [2020-07-18 00:47:24,331 INFO L280 TraceCheckUtils]: 25: Hoare triple {524#false} assume !(~i~0 < ~N~0); {524#false} is VALID [2020-07-18 00:47:24,331 INFO L280 TraceCheckUtils]: 26: Hoare triple {524#false} ~i~0 := 0; {524#false} is VALID [2020-07-18 00:47:24,331 INFO L280 TraceCheckUtils]: 27: Hoare triple {524#false} assume !!(~i~0 < ~N~0); {524#false} is VALID [2020-07-18 00:47:24,332 INFO L280 TraceCheckUtils]: 28: Hoare triple {524#false} SUMMARY for call #t~mem8 := read~int(~a~0.base, ~a~0.offset + 8 * ~i~0, 8); srcloc: L45 {524#false} is VALID [2020-07-18 00:47:24,332 INFO L263 TraceCheckUtils]: 29: Hoare triple {524#false} call __VERIFIER_assert((if 0 == #t~mem8 then 1 else 0)); {524#false} is VALID [2020-07-18 00:47:24,332 INFO L280 TraceCheckUtils]: 30: Hoare triple {524#false} ~cond := #in~cond; {524#false} is VALID [2020-07-18 00:47:24,332 INFO L280 TraceCheckUtils]: 31: Hoare triple {524#false} assume 0 == ~cond; {524#false} is VALID [2020-07-18 00:47:24,333 INFO L280 TraceCheckUtils]: 32: Hoare triple {524#false} assume !false; {524#false} is VALID [2020-07-18 00:47:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:47:24,341 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:24,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367175249] [2020-07-18 00:47:24,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:24,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 00:47:24,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24613141] [2020-07-18 00:47:24,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-18 00:47:24,346 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:24,346 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 00:47:24,390 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:24,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 00:47:24,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:24,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 00:47:24,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-18 00:47:24,392 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 5 states. [2020-07-18 00:47:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:24,911 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-07-18 00:47:24,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 00:47:24,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-18 00:47:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:47:24,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2020-07-18 00:47:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:47:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2020-07-18 00:47:24,925 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 117 transitions. [2020-07-18 00:47:25,054 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 117 edges. 117 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:25,059 INFO L225 Difference]: With dead ends: 108 [2020-07-18 00:47:25,059 INFO L226 Difference]: Without dead ends: 78 [2020-07-18 00:47:25,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-18 00:47:25,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-18 00:47:25,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2020-07-18 00:47:25,164 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:25,164 INFO L82 GeneralOperation]: Start isEquivalent. First operand 78 states. Second operand 59 states. [2020-07-18 00:47:25,164 INFO L74 IsIncluded]: Start isIncluded. First operand 78 states. Second operand 59 states. [2020-07-18 00:47:25,165 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 59 states. [2020-07-18 00:47:25,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:25,171 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-07-18 00:47:25,171 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-07-18 00:47:25,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:25,172 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:25,173 INFO L74 IsIncluded]: Start isIncluded. First operand 59 states. Second operand 78 states. [2020-07-18 00:47:25,173 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 78 states. [2020-07-18 00:47:25,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:25,177 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-07-18 00:47:25,178 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-07-18 00:47:25,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:25,179 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:25,179 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:25,179 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-18 00:47:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-07-18 00:47:25,182 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 33 [2020-07-18 00:47:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:25,183 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-07-18 00:47:25,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 00:47:25,183 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 59 states and 62 transitions. [2020-07-18 00:47:25,246 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:25,247 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-07-18 00:47:25,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-18 00:47:25,248 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:25,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:47:25,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:47:25,249 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:25,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:25,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1203755678, now seen corresponding path program 1 times [2020-07-18 00:47:25,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:25,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175839629] [2020-07-18 00:47:25,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:25,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 00:47:25,277 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:290) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 00:47:25,283 INFO L168 Benchmark]: Toolchain (without parser) took 3238.95 ms. Allocated memory was 146.8 MB in the beginning and 243.8 MB in the end (delta: 97.0 MB). Free memory was 103.5 MB in the beginning and 101.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 98.6 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:25,283 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 00:47:25,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.49 ms. Allocated memory is still 146.8 MB. Free memory was 103.1 MB in the beginning and 92.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:25,285 INFO L168 Benchmark]: Boogie Preprocessor took 124.71 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 92.3 MB in the beginning and 182.1 MB in the end (delta: -89.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:25,286 INFO L168 Benchmark]: RCFGBuilder took 481.55 ms. Allocated memory is still 204.5 MB. Free memory was 182.1 MB in the beginning and 153.6 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:25,287 INFO L168 Benchmark]: TraceAbstraction took 2348.58 ms. Allocated memory was 204.5 MB in the beginning and 243.8 MB in the end (delta: 39.3 MB). Free memory was 153.6 MB in the beginning and 101.9 MB in the end (delta: 51.7 MB). Peak memory consumption was 91.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:25,291 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.49 ms. Allocated memory is still 146.8 MB. Free memory was 103.1 MB in the beginning and 92.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.71 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 92.3 MB in the beginning and 182.1 MB in the end (delta: -89.8 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.55 ms. Allocated memory is still 204.5 MB. Free memory was 182.1 MB in the beginning and 153.6 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2348.58 ms. Allocated memory was 204.5 MB in the beginning and 243.8 MB in the end (delta: 39.3 MB). Free memory was 153.6 MB in the beginning and 101.9 MB in the end (delta: 51.7 MB). Peak memory consumption was 91.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...