/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/s3liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:47:33,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:47:33,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:47:33,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:47:33,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:47:33,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:47:33,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:47:33,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:47:33,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:47:33,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:47:33,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:47:33,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:47:33,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:47:33,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:47:33,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:47:33,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:47:33,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:47:33,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:47:33,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:47:33,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:47:33,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:47:33,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:47:33,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:47:33,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:47:33,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:47:33,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:47:33,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:47:33,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:47:33,749 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 00:47:33,762 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:47:33,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:47:33,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:47:33,764 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:47:33,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:47:33,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:47:33,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:47:33,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:47:33,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:47:33,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:47:33,767 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:47:33,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:47:33,768 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:47:33,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:47:33,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:47:33,770 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:47:33,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:47:33,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:47:33,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:47:33,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:47:33,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:47:33,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:47:33,772 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:47:34,038 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:47:34,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:47:34,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:47:34,054 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:47:34,054 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:47:34,055 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s3liff.c [2020-07-18 00:47:34,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2364fb93e/646bbde4ee364204aa6058a5f309238f/FLAG013c62b24 [2020-07-18 00:47:34,571 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:47:34,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s3liff.c [2020-07-18 00:47:34,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2364fb93e/646bbde4ee364204aa6058a5f309238f/FLAG013c62b24 [2020-07-18 00:47:34,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2364fb93e/646bbde4ee364204aa6058a5f309238f [2020-07-18 00:47:34,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:47:34,972 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:47:34,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:34,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:47:34,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:47:34,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:34" (1/1) ... [2020-07-18 00:47:34,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6d909b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:34, skipping insertion in model container [2020-07-18 00:47:34,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:34" (1/1) ... [2020-07-18 00:47:34,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:47:35,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:47:35,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:35,202 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:47:35,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:35,244 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:47:35,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:35 WrapperNode [2020-07-18 00:47:35,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:35,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:47:35,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:47:35,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:47:35,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:35" (1/1) ... [2020-07-18 00:47:35,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:35" (1/1) ... [2020-07-18 00:47:35,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:35" (1/1) ... [2020-07-18 00:47:35,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:35" (1/1) ... [2020-07-18 00:47:35,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:35" (1/1) ... [2020-07-18 00:47:35,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:35" (1/1) ... [2020-07-18 00:47:35,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:35" (1/1) ... [2020-07-18 00:47:35,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:47:35,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:47:35,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:47:35,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:47:35,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:35" (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 [2020-07-18 00:47:35,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:47:35,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:47:35,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 00:47:35,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:47:35,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:47:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:47:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:47:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 00:47:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:47:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:47:35,439 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-18 00:47:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:47:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 00:47:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-18 00:47:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:47:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:47:35,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:47:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:47:35,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:47:35,960 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:47:35,961 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-18 00:47:35,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:35 BoogieIcfgContainer [2020-07-18 00:47:35,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:47:35,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:47:35,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:47:35,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:47:35,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:47:34" (1/3) ... [2020-07-18 00:47:35,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1ea22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:35, skipping insertion in model container [2020-07-18 00:47:35,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:35" (2/3) ... [2020-07-18 00:47:35,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1ea22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:35, skipping insertion in model container [2020-07-18 00:47:35,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:35" (3/3) ... [2020-07-18 00:47:35,976 INFO L109 eAbstractionObserver]: Analyzing ICFG s3liff.c [2020-07-18 00:47:35,986 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:47:35,993 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:47:36,007 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:47:36,029 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:47:36,029 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:47:36,029 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:47:36,029 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:47:36,030 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:47:36,030 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:47:36,030 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:47:36,030 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:47:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-07-18 00:47:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-18 00:47:36,057 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:36,058 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 00:47:36,059 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:36,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:36,065 INFO L82 PathProgramCache]: Analyzing trace with hash -2050446892, now seen corresponding path program 1 times [2020-07-18 00:47:36,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:36,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078560433] [2020-07-18 00:47:36,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:36,299 INFO L280 TraceCheckUtils]: 0: Hoare triple {86#(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; {74#true} is VALID [2020-07-18 00:47:36,299 INFO L280 TraceCheckUtils]: 1: Hoare triple {74#true} #valid := #valid[0 := 0]; {74#true} is VALID [2020-07-18 00:47:36,300 INFO L280 TraceCheckUtils]: 2: Hoare triple {74#true} assume 0 < #StackHeapBarrier; {74#true} is VALID [2020-07-18 00:47:36,300 INFO L280 TraceCheckUtils]: 3: Hoare triple {74#true} ~N~0 := 0; {74#true} is VALID [2020-07-18 00:47:36,301 INFO L280 TraceCheckUtils]: 4: Hoare triple {74#true} assume true; {74#true} is VALID [2020-07-18 00:47:36,301 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {74#true} {74#true} #122#return; {74#true} is VALID [2020-07-18 00:47:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:36,311 INFO L280 TraceCheckUtils]: 0: Hoare triple {74#true} ~cond := #in~cond; {74#true} is VALID [2020-07-18 00:47:36,311 INFO L280 TraceCheckUtils]: 1: Hoare triple {74#true} assume !(0 == ~cond); {74#true} is VALID [2020-07-18 00:47:36,312 INFO L280 TraceCheckUtils]: 2: Hoare triple {74#true} assume true; {74#true} is VALID [2020-07-18 00:47:36,312 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {74#true} {74#true} #118#return; {74#true} is VALID [2020-07-18 00:47:36,314 INFO L263 TraceCheckUtils]: 0: Hoare triple {74#true} call ULTIMATE.init(); {86#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:36,315 INFO L280 TraceCheckUtils]: 1: Hoare triple {86#(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; {74#true} is VALID [2020-07-18 00:47:36,315 INFO L280 TraceCheckUtils]: 2: Hoare triple {74#true} #valid := #valid[0 := 0]; {74#true} is VALID [2020-07-18 00:47:36,316 INFO L280 TraceCheckUtils]: 3: Hoare triple {74#true} assume 0 < #StackHeapBarrier; {74#true} is VALID [2020-07-18 00:47:36,316 INFO L280 TraceCheckUtils]: 4: Hoare triple {74#true} ~N~0 := 0; {74#true} is VALID [2020-07-18 00:47:36,316 INFO L280 TraceCheckUtils]: 5: Hoare triple {74#true} assume true; {74#true} is VALID [2020-07-18 00:47:36,317 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {74#true} {74#true} #122#return; {74#true} is VALID [2020-07-18 00:47:36,317 INFO L263 TraceCheckUtils]: 7: Hoare triple {74#true} call #t~ret11 := main(); {74#true} is VALID [2020-07-18 00:47:36,318 INFO L280 TraceCheckUtils]: 8: Hoare triple {74#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {74#true} is VALID [2020-07-18 00:47:36,318 INFO L280 TraceCheckUtils]: 9: Hoare triple {74#true} ~N~0 := #t~nondet0; {74#true} is VALID [2020-07-18 00:47:36,319 INFO L280 TraceCheckUtils]: 10: Hoare triple {74#true} havoc #t~nondet0; {74#true} is VALID [2020-07-18 00:47:36,319 INFO L280 TraceCheckUtils]: 11: Hoare triple {74#true} assume !(~N~0 <= 0); {74#true} is VALID [2020-07-18 00:47:36,320 INFO L263 TraceCheckUtils]: 12: Hoare triple {74#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {74#true} is VALID [2020-07-18 00:47:36,320 INFO L280 TraceCheckUtils]: 13: Hoare triple {74#true} ~cond := #in~cond; {74#true} is VALID [2020-07-18 00:47:36,321 INFO L280 TraceCheckUtils]: 14: Hoare triple {74#true} assume !(0 == ~cond); {74#true} is VALID [2020-07-18 00:47:36,321 INFO L280 TraceCheckUtils]: 15: Hoare triple {74#true} assume true; {74#true} is VALID [2020-07-18 00:47:36,321 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {74#true} {74#true} #118#return; {74#true} is VALID [2020-07-18 00:47:36,322 INFO L280 TraceCheckUtils]: 17: Hoare triple {74#true} havoc ~i~0; {74#true} is VALID [2020-07-18 00:47:36,322 INFO L280 TraceCheckUtils]: 18: Hoare triple {74#true} SUMMARY for call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(8); srcloc: L26 {74#true} is VALID [2020-07-18 00:47:36,323 INFO L280 TraceCheckUtils]: 19: Hoare triple {74#true} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0); srcloc: L26-1 {74#true} is VALID [2020-07-18 00:47:36,323 INFO L280 TraceCheckUtils]: 20: Hoare triple {74#true} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {74#true} is VALID [2020-07-18 00:47:36,324 INFO L280 TraceCheckUtils]: 21: Hoare triple {74#true} SUMMARY for call write~int(~N~0, ~#sum~0.base, ~#sum~0.offset, 8); srcloc: L29 {74#true} is VALID [2020-07-18 00:47:36,324 INFO L280 TraceCheckUtils]: 22: Hoare triple {74#true} ~i~0 := 0; {74#true} is VALID [2020-07-18 00:47:36,325 INFO L280 TraceCheckUtils]: 23: Hoare triple {74#true} assume !true; {75#false} is VALID [2020-07-18 00:47:36,326 INFO L280 TraceCheckUtils]: 24: Hoare triple {75#false} ~i~0 := 0; {75#false} is VALID [2020-07-18 00:47:36,326 INFO L280 TraceCheckUtils]: 25: Hoare triple {75#false} assume !true; {75#false} is VALID [2020-07-18 00:47:36,326 INFO L280 TraceCheckUtils]: 26: Hoare triple {75#false} ~i~0 := 0; {75#false} is VALID [2020-07-18 00:47:36,327 INFO L280 TraceCheckUtils]: 27: Hoare triple {75#false} assume !true; {75#false} is VALID [2020-07-18 00:47:36,327 INFO L280 TraceCheckUtils]: 28: Hoare triple {75#false} SUMMARY for call #t~mem10 := read~int(~#sum~0.base, ~#sum~0.offset, 8); srcloc: L44-6 {75#false} is VALID [2020-07-18 00:47:36,328 INFO L263 TraceCheckUtils]: 29: Hoare triple {75#false} call __VERIFIER_assert((if #t~mem10 == 4 * ~N~0 then 1 else 0)); {75#false} is VALID [2020-07-18 00:47:36,328 INFO L280 TraceCheckUtils]: 30: Hoare triple {75#false} ~cond := #in~cond; {75#false} is VALID [2020-07-18 00:47:36,329 INFO L280 TraceCheckUtils]: 31: Hoare triple {75#false} assume 0 == ~cond; {75#false} is VALID [2020-07-18 00:47:36,329 INFO L280 TraceCheckUtils]: 32: Hoare triple {75#false} assume !false; {75#false} is VALID [2020-07-18 00:47:36,337 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 00:47:36,340 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:36,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078560433] [2020-07-18 00:47:36,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:36,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 00:47:36,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951548246] [2020-07-18 00:47:36,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-18 00:47:36,355 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:36,359 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 00:47:36,414 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 00:47:36,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 00:47:36,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:36,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 00:47:36,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:47:36,426 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2020-07-18 00:47:36,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:36,922 INFO L93 Difference]: Finished difference Result 125 states and 142 transitions. [2020-07-18 00:47:36,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 00:47:36,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-18 00:47:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2020-07-18 00:47:36,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:36,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2020-07-18 00:47:36,959 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 142 transitions. [2020-07-18 00:47:37,127 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 142 edges. 142 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:37,152 INFO L225 Difference]: With dead ends: 125 [2020-07-18 00:47:37,152 INFO L226 Difference]: Without dead ends: 59 [2020-07-18 00:47:37,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 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 00:47:37,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-18 00:47:37,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-07-18 00:47:37,271 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:37,272 INFO L82 GeneralOperation]: Start isEquivalent. First operand 59 states. Second operand 59 states. [2020-07-18 00:47:37,272 INFO L74 IsIncluded]: Start isIncluded. First operand 59 states. Second operand 59 states. [2020-07-18 00:47:37,272 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 59 states. [2020-07-18 00:47:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:37,278 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-07-18 00:47:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-07-18 00:47:37,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:37,279 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:37,280 INFO L74 IsIncluded]: Start isIncluded. First operand 59 states. Second operand 59 states. [2020-07-18 00:47:37,280 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 59 states. [2020-07-18 00:47:37,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:37,285 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-07-18 00:47:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-07-18 00:47:37,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:37,286 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:37,286 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:37,287 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-18 00:47:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-07-18 00:47:37,292 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 33 [2020-07-18 00:47:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:37,293 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-07-18 00:47:37,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 00:47:37,293 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 59 states and 62 transitions. [2020-07-18 00:47:37,362 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 00:47:37,362 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-07-18 00:47:37,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-18 00:47:37,364 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:37,364 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 00:47:37,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:47:37,365 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:37,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:37,365 INFO L82 PathProgramCache]: Analyzing trace with hash -341126016, now seen corresponding path program 1 times [2020-07-18 00:47:37,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:37,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260440291] [2020-07-18 00:47:37,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:37,472 INFO L280 TraceCheckUtils]: 0: Hoare triple {589#(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; {575#true} is VALID [2020-07-18 00:47:37,473 INFO L280 TraceCheckUtils]: 1: Hoare triple {575#true} #valid := #valid[0 := 0]; {575#true} is VALID [2020-07-18 00:47:37,473 INFO L280 TraceCheckUtils]: 2: Hoare triple {575#true} assume 0 < #StackHeapBarrier; {575#true} is VALID [2020-07-18 00:47:37,473 INFO L280 TraceCheckUtils]: 3: Hoare triple {575#true} ~N~0 := 0; {575#true} is VALID [2020-07-18 00:47:37,474 INFO L280 TraceCheckUtils]: 4: Hoare triple {575#true} assume true; {575#true} is VALID [2020-07-18 00:47:37,474 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {575#true} {575#true} #122#return; {575#true} is VALID [2020-07-18 00:47:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:37,486 INFO L280 TraceCheckUtils]: 0: Hoare triple {575#true} ~cond := #in~cond; {575#true} is VALID [2020-07-18 00:47:37,487 INFO L280 TraceCheckUtils]: 1: Hoare triple {575#true} assume !(0 == ~cond); {575#true} is VALID [2020-07-18 00:47:37,487 INFO L280 TraceCheckUtils]: 2: Hoare triple {575#true} assume true; {575#true} is VALID [2020-07-18 00:47:37,491 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {575#true} {583#(<= 1 ~N~0)} #118#return; {583#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:37,492 INFO L263 TraceCheckUtils]: 0: Hoare triple {575#true} call ULTIMATE.init(); {589#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:37,492 INFO L280 TraceCheckUtils]: 1: Hoare triple {589#(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; {575#true} is VALID [2020-07-18 00:47:37,493 INFO L280 TraceCheckUtils]: 2: Hoare triple {575#true} #valid := #valid[0 := 0]; {575#true} is VALID [2020-07-18 00:47:37,493 INFO L280 TraceCheckUtils]: 3: Hoare triple {575#true} assume 0 < #StackHeapBarrier; {575#true} is VALID [2020-07-18 00:47:37,493 INFO L280 TraceCheckUtils]: 4: Hoare triple {575#true} ~N~0 := 0; {575#true} is VALID [2020-07-18 00:47:37,494 INFO L280 TraceCheckUtils]: 5: Hoare triple {575#true} assume true; {575#true} is VALID [2020-07-18 00:47:37,494 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {575#true} {575#true} #122#return; {575#true} is VALID [2020-07-18 00:47:37,494 INFO L263 TraceCheckUtils]: 7: Hoare triple {575#true} call #t~ret11 := main(); {575#true} is VALID [2020-07-18 00:47:37,494 INFO L280 TraceCheckUtils]: 8: Hoare triple {575#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {575#true} is VALID [2020-07-18 00:47:37,495 INFO L280 TraceCheckUtils]: 9: Hoare triple {575#true} ~N~0 := #t~nondet0; {575#true} is VALID [2020-07-18 00:47:37,495 INFO L280 TraceCheckUtils]: 10: Hoare triple {575#true} havoc #t~nondet0; {575#true} is VALID [2020-07-18 00:47:37,498 INFO L280 TraceCheckUtils]: 11: Hoare triple {575#true} assume !(~N~0 <= 0); {583#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:37,498 INFO L263 TraceCheckUtils]: 12: Hoare triple {583#(<= 1 ~N~0)} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {575#true} is VALID [2020-07-18 00:47:37,498 INFO L280 TraceCheckUtils]: 13: Hoare triple {575#true} ~cond := #in~cond; {575#true} is VALID [2020-07-18 00:47:37,499 INFO L280 TraceCheckUtils]: 14: Hoare triple {575#true} assume !(0 == ~cond); {575#true} is VALID [2020-07-18 00:47:37,499 INFO L280 TraceCheckUtils]: 15: Hoare triple {575#true} assume true; {575#true} is VALID [2020-07-18 00:47:37,500 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {575#true} {583#(<= 1 ~N~0)} #118#return; {583#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:37,500 INFO L280 TraceCheckUtils]: 17: Hoare triple {583#(<= 1 ~N~0)} havoc ~i~0; {583#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:37,501 INFO L280 TraceCheckUtils]: 18: Hoare triple {583#(<= 1 ~N~0)} SUMMARY for call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(8); srcloc: L26 {583#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:37,502 INFO L280 TraceCheckUtils]: 19: Hoare triple {583#(<= 1 ~N~0)} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0); srcloc: L26-1 {583#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:37,503 INFO L280 TraceCheckUtils]: 20: Hoare triple {583#(<= 1 ~N~0)} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {583#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:37,504 INFO L280 TraceCheckUtils]: 21: Hoare triple {583#(<= 1 ~N~0)} SUMMARY for call write~int(~N~0, ~#sum~0.base, ~#sum~0.offset, 8); srcloc: L29 {583#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:37,505 INFO L280 TraceCheckUtils]: 22: Hoare triple {583#(<= 1 ~N~0)} ~i~0 := 0; {588#(and (= 0 main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-18 00:47:37,506 INFO L280 TraceCheckUtils]: 23: Hoare triple {588#(and (= 0 main_~i~0) (<= 1 ~N~0))} assume !(~i~0 < ~N~0); {576#false} is VALID [2020-07-18 00:47:37,507 INFO L280 TraceCheckUtils]: 24: Hoare triple {576#false} ~i~0 := 0; {576#false} is VALID [2020-07-18 00:47:37,507 INFO L280 TraceCheckUtils]: 25: Hoare triple {576#false} assume !(~i~0 < ~N~0); {576#false} is VALID [2020-07-18 00:47:37,507 INFO L280 TraceCheckUtils]: 26: Hoare triple {576#false} ~i~0 := 0; {576#false} is VALID [2020-07-18 00:47:37,507 INFO L280 TraceCheckUtils]: 27: Hoare triple {576#false} assume !(~i~0 < ~N~0); {576#false} is VALID [2020-07-18 00:47:37,508 INFO L280 TraceCheckUtils]: 28: Hoare triple {576#false} SUMMARY for call #t~mem10 := read~int(~#sum~0.base, ~#sum~0.offset, 8); srcloc: L44-6 {576#false} is VALID [2020-07-18 00:47:37,508 INFO L263 TraceCheckUtils]: 29: Hoare triple {576#false} call __VERIFIER_assert((if #t~mem10 == 4 * ~N~0 then 1 else 0)); {576#false} is VALID [2020-07-18 00:47:37,508 INFO L280 TraceCheckUtils]: 30: Hoare triple {576#false} ~cond := #in~cond; {576#false} is VALID [2020-07-18 00:47:37,509 INFO L280 TraceCheckUtils]: 31: Hoare triple {576#false} assume 0 == ~cond; {576#false} is VALID [2020-07-18 00:47:37,509 INFO L280 TraceCheckUtils]: 32: Hoare triple {576#false} assume !false; {576#false} is VALID [2020-07-18 00:47:37,513 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 00:47:37,519 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:37,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260440291] [2020-07-18 00:47:37,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:37,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 00:47:37,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466082748] [2020-07-18 00:47:37,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-18 00:47:37,521 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:37,522 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 00:47:37,564 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 00:47:37,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 00:47:37,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:37,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 00:47:37,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-18 00:47:37,566 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 5 states. [2020-07-18 00:47:38,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:38,116 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-07-18 00:47:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 00:47:38,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-18 00:47:38,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:47:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2020-07-18 00:47:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:47:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2020-07-18 00:47:38,128 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 124 transitions. [2020-07-18 00:47:38,267 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 124 edges. 124 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:38,271 INFO L225 Difference]: With dead ends: 115 [2020-07-18 00:47:38,271 INFO L226 Difference]: Without dead ends: 84 [2020-07-18 00:47:38,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 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 00:47:38,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-07-18 00:47:38,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2020-07-18 00:47:38,373 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:38,373 INFO L82 GeneralOperation]: Start isEquivalent. First operand 84 states. Second operand 62 states. [2020-07-18 00:47:38,374 INFO L74 IsIncluded]: Start isIncluded. First operand 84 states. Second operand 62 states. [2020-07-18 00:47:38,374 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 62 states. [2020-07-18 00:47:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:38,378 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-07-18 00:47:38,379 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-07-18 00:47:38,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:38,380 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:38,380 INFO L74 IsIncluded]: Start isIncluded. First operand 62 states. Second operand 84 states. [2020-07-18 00:47:38,380 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 84 states. [2020-07-18 00:47:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:38,384 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-07-18 00:47:38,385 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-07-18 00:47:38,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:38,386 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:38,386 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:38,386 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-18 00:47:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-07-18 00:47:38,389 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 33 [2020-07-18 00:47:38,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:38,389 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-07-18 00:47:38,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 00:47:38,390 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 62 states and 65 transitions. [2020-07-18 00:47:38,476 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:38,476 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-07-18 00:47:38,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-18 00:47:38,478 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:38,479 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, 1, 1, 1, 1, 1] [2020-07-18 00:47:38,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:47:38,479 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:38,480 INFO L82 PathProgramCache]: Analyzing trace with hash 746418975, now seen corresponding path program 1 times [2020-07-18 00:47:38,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:38,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717111413] [2020-07-18 00:47:38,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:38,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 00:47:38,522 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 00:47:38,528 INFO L168 Benchmark]: Toolchain (without parser) took 3556.77 ms. Allocated memory was 143.7 MB in the beginning and 248.0 MB in the end (delta: 104.3 MB). Free memory was 102.3 MB in the beginning and 105.5 MB in the end (delta: -3.3 MB). Peak memory consumption was 101.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:38,529 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 143.7 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 00:47:38,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.72 ms. Allocated memory is still 143.7 MB. Free memory was 101.9 MB in the beginning and 90.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:38,531 INFO L168 Benchmark]: Boogie Preprocessor took 131.96 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 90.7 MB in the beginning and 178.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:38,531 INFO L168 Benchmark]: RCFGBuilder took 590.81 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 147.3 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:38,532 INFO L168 Benchmark]: TraceAbstraction took 2555.46 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 146.7 MB in the beginning and 105.5 MB in the end (delta: 41.1 MB). Peak memory consumption was 87.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:38,536 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 0.17 ms. Allocated memory is still 143.7 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.72 ms. Allocated memory is still 143.7 MB. Free memory was 101.9 MB in the beginning and 90.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.96 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 90.7 MB in the beginning and 178.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 590.81 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 147.3 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2555.46 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 146.7 MB in the beginning and 105.5 MB in the end (delta: 41.1 MB). Peak memory consumption was 87.8 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...