/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/s4iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:47:36,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:47:36,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:47:36,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:47:36,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:47:36,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:47:36,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:47:36,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:47:36,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:47:36,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:47:36,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:47:36,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:47:36,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:47:36,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:47:36,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:47:36,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:47:36,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:47:36,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:47:36,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:47:36,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:47:36,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:47:36,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:47:36,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:47:36,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:47:36,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:47:36,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:47:36,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:47:36,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:47:36,535 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 00:47:36,561 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:47:36,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:47:36,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:47:36,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:47:36,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:47:36,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:47:36,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:47:36,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:47:36,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:47:36,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:47:36,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:47:36,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:47:36,568 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:47:36,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:47:36,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:47:36,568 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:47:36,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:47:36,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:47:36,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:47:36,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:47:36,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:47:36,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:47:36,572 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:47:36,864 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:47:36,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:47:36,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:47:36,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:47:36,883 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:47:36,884 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4iff.c [2020-07-18 00:47:36,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c7a8f595/5291737ace8b4de0a8c0b9f0b8f6b2c0/FLAG848bcd4b7 [2020-07-18 00:47:37,451 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:47:37,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4iff.c [2020-07-18 00:47:37,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c7a8f595/5291737ace8b4de0a8c0b9f0b8f6b2c0/FLAG848bcd4b7 [2020-07-18 00:47:37,819 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c7a8f595/5291737ace8b4de0a8c0b9f0b8f6b2c0 [2020-07-18 00:47:37,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:47:37,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:47:37,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:37,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:47:37,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:47:37,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:37" (1/1) ... [2020-07-18 00:47:37,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e0b013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:37, skipping insertion in model container [2020-07-18 00:47:37,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:37" (1/1) ... [2020-07-18 00:47:37,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:47:37,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:47:38,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:38,099 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:47:38,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:38,141 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:47:38,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:38 WrapperNode [2020-07-18 00:47:38,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:38,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:47:38,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:47:38,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:47:38,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:38" (1/1) ... [2020-07-18 00:47:38,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:38" (1/1) ... [2020-07-18 00:47:38,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:38" (1/1) ... [2020-07-18 00:47:38,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:38" (1/1) ... [2020-07-18 00:47:38,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:38" (1/1) ... [2020-07-18 00:47:38,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:38" (1/1) ... [2020-07-18 00:47:38,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:38" (1/1) ... [2020-07-18 00:47:38,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:47:38,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:47:38,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:47:38,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:47:38,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:38" (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 00:47:38,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:47:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:47:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 00:47:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:47:38,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:47:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:47:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:47:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 00:47:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:47:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:47:38,364 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-18 00:47:38,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:47:38,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 00:47:38,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-18 00:47:38,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:47:38,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:47:38,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:47:38,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:47:38,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:47:38,802 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:47:38,803 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-18 00:47:38,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:38 BoogieIcfgContainer [2020-07-18 00:47:38,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:47:38,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:47:38,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:47:38,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:47:38,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:47:37" (1/3) ... [2020-07-18 00:47:38,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@866ee88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:38, skipping insertion in model container [2020-07-18 00:47:38,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:38" (2/3) ... [2020-07-18 00:47:38,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@866ee88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:38, skipping insertion in model container [2020-07-18 00:47:38,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:38" (3/3) ... [2020-07-18 00:47:38,815 INFO L109 eAbstractionObserver]: Analyzing ICFG s4iff.c [2020-07-18 00:47:38,825 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:47:38,832 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:47:38,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:47:38,862 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:47:38,862 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:47:38,862 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:47:38,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:47:38,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:47:38,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:47:38,863 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:47:38,863 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:47:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-07-18 00:47:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-18 00:47:38,886 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:38,887 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] [2020-07-18 00:47:38,887 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:38,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:38,892 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-07-18 00:47:38,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:38,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660264858] [2020-07-18 00:47:38,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:39,130 INFO L280 TraceCheckUtils]: 0: Hoare triple {80#(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; {68#true} is VALID [2020-07-18 00:47:39,131 INFO L280 TraceCheckUtils]: 1: Hoare triple {68#true} #valid := #valid[0 := 0]; {68#true} is VALID [2020-07-18 00:47:39,131 INFO L280 TraceCheckUtils]: 2: Hoare triple {68#true} assume 0 < #StackHeapBarrier; {68#true} is VALID [2020-07-18 00:47:39,132 INFO L280 TraceCheckUtils]: 3: Hoare triple {68#true} ~N~0 := 0; {68#true} is VALID [2020-07-18 00:47:39,133 INFO L280 TraceCheckUtils]: 4: Hoare triple {68#true} assume true; {68#true} is VALID [2020-07-18 00:47:39,133 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {68#true} {68#true} #105#return; {68#true} is VALID [2020-07-18 00:47:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:39,143 INFO L280 TraceCheckUtils]: 0: Hoare triple {68#true} ~cond := #in~cond; {68#true} is VALID [2020-07-18 00:47:39,143 INFO L280 TraceCheckUtils]: 1: Hoare triple {68#true} assume !(0 == ~cond); {68#true} is VALID [2020-07-18 00:47:39,144 INFO L280 TraceCheckUtils]: 2: Hoare triple {68#true} assume true; {68#true} is VALID [2020-07-18 00:47:39,144 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {68#true} {68#true} #101#return; {68#true} is VALID [2020-07-18 00:47:39,146 INFO L263 TraceCheckUtils]: 0: Hoare triple {68#true} call ULTIMATE.init(); {80#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:39,147 INFO L280 TraceCheckUtils]: 1: Hoare triple {80#(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; {68#true} is VALID [2020-07-18 00:47:39,147 INFO L280 TraceCheckUtils]: 2: Hoare triple {68#true} #valid := #valid[0 := 0]; {68#true} is VALID [2020-07-18 00:47:39,148 INFO L280 TraceCheckUtils]: 3: Hoare triple {68#true} assume 0 < #StackHeapBarrier; {68#true} is VALID [2020-07-18 00:47:39,148 INFO L280 TraceCheckUtils]: 4: Hoare triple {68#true} ~N~0 := 0; {68#true} is VALID [2020-07-18 00:47:39,149 INFO L280 TraceCheckUtils]: 5: Hoare triple {68#true} assume true; {68#true} is VALID [2020-07-18 00:47:39,149 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {68#true} {68#true} #105#return; {68#true} is VALID [2020-07-18 00:47:39,149 INFO L263 TraceCheckUtils]: 7: Hoare triple {68#true} call #t~ret10 := main(); {68#true} is VALID [2020-07-18 00:47:39,150 INFO L280 TraceCheckUtils]: 8: Hoare triple {68#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {68#true} is VALID [2020-07-18 00:47:39,150 INFO L280 TraceCheckUtils]: 9: Hoare triple {68#true} ~N~0 := #t~nondet0; {68#true} is VALID [2020-07-18 00:47:39,151 INFO L280 TraceCheckUtils]: 10: Hoare triple {68#true} havoc #t~nondet0; {68#true} is VALID [2020-07-18 00:47:39,151 INFO L280 TraceCheckUtils]: 11: Hoare triple {68#true} assume !(~N~0 <= 0); {68#true} is VALID [2020-07-18 00:47:39,152 INFO L263 TraceCheckUtils]: 12: Hoare triple {68#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {68#true} is VALID [2020-07-18 00:47:39,152 INFO L280 TraceCheckUtils]: 13: Hoare triple {68#true} ~cond := #in~cond; {68#true} is VALID [2020-07-18 00:47:39,153 INFO L280 TraceCheckUtils]: 14: Hoare triple {68#true} assume !(0 == ~cond); {68#true} is VALID [2020-07-18 00:47:39,153 INFO L280 TraceCheckUtils]: 15: Hoare triple {68#true} assume true; {68#true} is VALID [2020-07-18 00:47:39,153 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {68#true} {68#true} #101#return; {68#true} is VALID [2020-07-18 00:47:39,154 INFO L280 TraceCheckUtils]: 17: Hoare triple {68#true} havoc ~i~0; {68#true} is VALID [2020-07-18 00:47:39,154 INFO L280 TraceCheckUtils]: 18: Hoare triple {68#true} SUMMARY for call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(8); srcloc: L26 {68#true} is VALID [2020-07-18 00:47:39,155 INFO L280 TraceCheckUtils]: 19: Hoare triple {68#true} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0); srcloc: L26-1 {68#true} is VALID [2020-07-18 00:47:39,155 INFO L280 TraceCheckUtils]: 20: Hoare triple {68#true} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {68#true} is VALID [2020-07-18 00:47:39,155 INFO L280 TraceCheckUtils]: 21: Hoare triple {68#true} SUMMARY for call write~int(1, ~#sum~0.base, ~#sum~0.offset, 8); srcloc: L29 {68#true} is VALID [2020-07-18 00:47:39,156 INFO L280 TraceCheckUtils]: 22: Hoare triple {68#true} ~i~0 := 0; {68#true} is VALID [2020-07-18 00:47:39,157 INFO L280 TraceCheckUtils]: 23: Hoare triple {68#true} assume !true; {69#false} is VALID [2020-07-18 00:47:39,158 INFO L280 TraceCheckUtils]: 24: Hoare triple {69#false} ~i~0 := 0; {69#false} is VALID [2020-07-18 00:47:39,158 INFO L280 TraceCheckUtils]: 25: Hoare triple {69#false} assume !true; {69#false} is VALID [2020-07-18 00:47:39,158 INFO L280 TraceCheckUtils]: 26: Hoare triple {69#false} SUMMARY for call #t~mem9 := read~int(~#sum~0.base, ~#sum~0.offset, 8); srcloc: L35-6 {69#false} is VALID [2020-07-18 00:47:39,159 INFO L263 TraceCheckUtils]: 27: Hoare triple {69#false} call __VERIFIER_assert((if #t~mem9 == 5 * ~N~0 then 1 else 0)); {69#false} is VALID [2020-07-18 00:47:39,159 INFO L280 TraceCheckUtils]: 28: Hoare triple {69#false} ~cond := #in~cond; {69#false} is VALID [2020-07-18 00:47:39,160 INFO L280 TraceCheckUtils]: 29: Hoare triple {69#false} assume 0 == ~cond; {69#false} is VALID [2020-07-18 00:47:39,160 INFO L280 TraceCheckUtils]: 30: Hoare triple {69#false} assume !false; {69#false} is VALID [2020-07-18 00:47:39,165 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 00:47:39,167 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:39,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660264858] [2020-07-18 00:47:39,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:39,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 00:47:39,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765228268] [2020-07-18 00:47:39,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-18 00:47:39,182 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:39,186 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 00:47:39,242 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:39,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 00:47:39,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:39,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 00:47:39,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:47:39,255 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-07-18 00:47:39,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:39,635 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-07-18 00:47:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 00:47:39,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-18 00:47:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:39,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2020-07-18 00:47:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:39,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2020-07-18 00:47:39,656 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 126 transitions. [2020-07-18 00:47:39,822 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 126 edges. 126 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:39,836 INFO L225 Difference]: With dead ends: 113 [2020-07-18 00:47:39,836 INFO L226 Difference]: Without dead ends: 53 [2020-07-18 00:47:39,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 00:47:39,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-18 00:47:39,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-07-18 00:47:39,930 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:39,931 INFO L82 GeneralOperation]: Start isEquivalent. First operand 53 states. Second operand 53 states. [2020-07-18 00:47:39,931 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand 53 states. [2020-07-18 00:47:39,932 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 53 states. [2020-07-18 00:47:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:39,937 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-07-18 00:47:39,938 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-07-18 00:47:39,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:39,939 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:39,939 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand 53 states. [2020-07-18 00:47:39,939 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 53 states. [2020-07-18 00:47:39,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:39,945 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-07-18 00:47:39,945 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-07-18 00:47:39,946 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:39,946 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:39,946 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:39,947 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-18 00:47:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-07-18 00:47:39,952 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-07-18 00:47:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:39,953 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-07-18 00:47:39,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 00:47:39,953 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 53 states and 55 transitions. [2020-07-18 00:47:40,019 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-07-18 00:47:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-18 00:47:40,021 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:40,021 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] [2020-07-18 00:47:40,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:47:40,021 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:40,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:40,022 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-07-18 00:47:40,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:40,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282462931] [2020-07-18 00:47:40,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:40,158 INFO L280 TraceCheckUtils]: 0: Hoare triple {535#(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; {521#true} is VALID [2020-07-18 00:47:40,159 INFO L280 TraceCheckUtils]: 1: Hoare triple {521#true} #valid := #valid[0 := 0]; {521#true} is VALID [2020-07-18 00:47:40,159 INFO L280 TraceCheckUtils]: 2: Hoare triple {521#true} assume 0 < #StackHeapBarrier; {521#true} is VALID [2020-07-18 00:47:40,159 INFO L280 TraceCheckUtils]: 3: Hoare triple {521#true} ~N~0 := 0; {521#true} is VALID [2020-07-18 00:47:40,160 INFO L280 TraceCheckUtils]: 4: Hoare triple {521#true} assume true; {521#true} is VALID [2020-07-18 00:47:40,160 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {521#true} {521#true} #105#return; {521#true} is VALID [2020-07-18 00:47:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:40,173 INFO L280 TraceCheckUtils]: 0: Hoare triple {521#true} ~cond := #in~cond; {521#true} is VALID [2020-07-18 00:47:40,174 INFO L280 TraceCheckUtils]: 1: Hoare triple {521#true} assume !(0 == ~cond); {521#true} is VALID [2020-07-18 00:47:40,175 INFO L280 TraceCheckUtils]: 2: Hoare triple {521#true} assume true; {521#true} is VALID [2020-07-18 00:47:40,177 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {521#true} {529#(<= 1 ~N~0)} #101#return; {529#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:40,182 INFO L263 TraceCheckUtils]: 0: Hoare triple {521#true} call ULTIMATE.init(); {535#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:40,182 INFO L280 TraceCheckUtils]: 1: Hoare triple {535#(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; {521#true} is VALID [2020-07-18 00:47:40,183 INFO L280 TraceCheckUtils]: 2: Hoare triple {521#true} #valid := #valid[0 := 0]; {521#true} is VALID [2020-07-18 00:47:40,183 INFO L280 TraceCheckUtils]: 3: Hoare triple {521#true} assume 0 < #StackHeapBarrier; {521#true} is VALID [2020-07-18 00:47:40,183 INFO L280 TraceCheckUtils]: 4: Hoare triple {521#true} ~N~0 := 0; {521#true} is VALID [2020-07-18 00:47:40,183 INFO L280 TraceCheckUtils]: 5: Hoare triple {521#true} assume true; {521#true} is VALID [2020-07-18 00:47:40,184 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {521#true} {521#true} #105#return; {521#true} is VALID [2020-07-18 00:47:40,184 INFO L263 TraceCheckUtils]: 7: Hoare triple {521#true} call #t~ret10 := main(); {521#true} is VALID [2020-07-18 00:47:40,184 INFO L280 TraceCheckUtils]: 8: Hoare triple {521#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {521#true} is VALID [2020-07-18 00:47:40,185 INFO L280 TraceCheckUtils]: 9: Hoare triple {521#true} ~N~0 := #t~nondet0; {521#true} is VALID [2020-07-18 00:47:40,185 INFO L280 TraceCheckUtils]: 10: Hoare triple {521#true} havoc #t~nondet0; {521#true} is VALID [2020-07-18 00:47:40,188 INFO L280 TraceCheckUtils]: 11: Hoare triple {521#true} assume !(~N~0 <= 0); {529#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:40,188 INFO L263 TraceCheckUtils]: 12: Hoare triple {529#(<= 1 ~N~0)} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {521#true} is VALID [2020-07-18 00:47:40,189 INFO L280 TraceCheckUtils]: 13: Hoare triple {521#true} ~cond := #in~cond; {521#true} is VALID [2020-07-18 00:47:40,189 INFO L280 TraceCheckUtils]: 14: Hoare triple {521#true} assume !(0 == ~cond); {521#true} is VALID [2020-07-18 00:47:40,189 INFO L280 TraceCheckUtils]: 15: Hoare triple {521#true} assume true; {521#true} is VALID [2020-07-18 00:47:40,190 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {521#true} {529#(<= 1 ~N~0)} #101#return; {529#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:40,191 INFO L280 TraceCheckUtils]: 17: Hoare triple {529#(<= 1 ~N~0)} havoc ~i~0; {529#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:40,192 INFO L280 TraceCheckUtils]: 18: Hoare triple {529#(<= 1 ~N~0)} SUMMARY for call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(8); srcloc: L26 {529#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:40,193 INFO L280 TraceCheckUtils]: 19: Hoare triple {529#(<= 1 ~N~0)} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0); srcloc: L26-1 {529#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:40,193 INFO L280 TraceCheckUtils]: 20: Hoare triple {529#(<= 1 ~N~0)} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {529#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:40,194 INFO L280 TraceCheckUtils]: 21: Hoare triple {529#(<= 1 ~N~0)} SUMMARY for call write~int(1, ~#sum~0.base, ~#sum~0.offset, 8); srcloc: L29 {529#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:40,195 INFO L280 TraceCheckUtils]: 22: Hoare triple {529#(<= 1 ~N~0)} ~i~0 := 0; {534#(and (= 0 main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-18 00:47:40,196 INFO L280 TraceCheckUtils]: 23: Hoare triple {534#(and (= 0 main_~i~0) (<= 1 ~N~0))} assume !(~i~0 < ~N~0); {522#false} is VALID [2020-07-18 00:47:40,196 INFO L280 TraceCheckUtils]: 24: Hoare triple {522#false} ~i~0 := 0; {522#false} is VALID [2020-07-18 00:47:40,197 INFO L280 TraceCheckUtils]: 25: Hoare triple {522#false} assume !(~i~0 < ~N~0); {522#false} is VALID [2020-07-18 00:47:40,197 INFO L280 TraceCheckUtils]: 26: Hoare triple {522#false} SUMMARY for call #t~mem9 := read~int(~#sum~0.base, ~#sum~0.offset, 8); srcloc: L35-6 {522#false} is VALID [2020-07-18 00:47:40,197 INFO L263 TraceCheckUtils]: 27: Hoare triple {522#false} call __VERIFIER_assert((if #t~mem9 == 5 * ~N~0 then 1 else 0)); {522#false} is VALID [2020-07-18 00:47:40,198 INFO L280 TraceCheckUtils]: 28: Hoare triple {522#false} ~cond := #in~cond; {522#false} is VALID [2020-07-18 00:47:40,198 INFO L280 TraceCheckUtils]: 29: Hoare triple {522#false} assume 0 == ~cond; {522#false} is VALID [2020-07-18 00:47:40,198 INFO L280 TraceCheckUtils]: 30: Hoare triple {522#false} assume !false; {522#false} is VALID [2020-07-18 00:47:40,200 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 00:47:40,205 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:40,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282462931] [2020-07-18 00:47:40,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:40,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 00:47:40,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196301065] [2020-07-18 00:47:40,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-18 00:47:40,207 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:40,207 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 00:47:40,244 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:40,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 00:47:40,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:40,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 00:47:40,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-18 00:47:40,246 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-07-18 00:47:40,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:40,736 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2020-07-18 00:47:40,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 00:47:40,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-07-18 00:47:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:47:40,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2020-07-18 00:47:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:47:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2020-07-18 00:47:40,744 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 105 transitions. [2020-07-18 00:47:40,872 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 105 edges. 105 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:40,875 INFO L225 Difference]: With dead ends: 99 [2020-07-18 00:47:40,875 INFO L226 Difference]: Without dead ends: 74 [2020-07-18 00:47:40,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 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 00:47:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-18 00:47:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2020-07-18 00:47:40,962 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:40,962 INFO L82 GeneralOperation]: Start isEquivalent. First operand 74 states. Second operand 55 states. [2020-07-18 00:47:40,962 INFO L74 IsIncluded]: Start isIncluded. First operand 74 states. Second operand 55 states. [2020-07-18 00:47:40,962 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 55 states. [2020-07-18 00:47:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:40,967 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2020-07-18 00:47:40,967 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-07-18 00:47:40,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:40,968 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:40,969 INFO L74 IsIncluded]: Start isIncluded. First operand 55 states. Second operand 74 states. [2020-07-18 00:47:40,969 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 74 states. [2020-07-18 00:47:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:40,973 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2020-07-18 00:47:40,973 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-07-18 00:47:40,974 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:40,974 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:40,975 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:40,975 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:40,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-18 00:47:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-07-18 00:47:40,978 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-07-18 00:47:40,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:40,978 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-07-18 00:47:40,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 00:47:40,979 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 55 states and 57 transitions. [2020-07-18 00:47:41,054 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:41,055 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-07-18 00:47:41,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-18 00:47:41,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:41,056 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] [2020-07-18 00:47:41,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:47:41,057 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:41,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:41,059 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-07-18 00:47:41,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:41,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078087081] [2020-07-18 00:47:41,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:41,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 00:47:41,099 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 00:47:41,105 INFO L168 Benchmark]: Toolchain (without parser) took 3275.20 ms. Allocated memory was 145.2 MB in the beginning and 245.9 MB in the end (delta: 100.7 MB). Free memory was 103.8 MB in the beginning and 129.6 MB in the end (delta: -25.8 MB). Peak memory consumption was 74.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:41,106 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 00:47:41,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.36 ms. Allocated memory is still 145.2 MB. Free memory was 103.4 MB in the beginning and 92.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:41,108 INFO L168 Benchmark]: Boogie Preprocessor took 154.39 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 92.5 MB in the beginning and 180.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:41,109 INFO L168 Benchmark]: RCFGBuilder took 510.39 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 151.2 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:41,110 INFO L168 Benchmark]: TraceAbstraction took 2294.23 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 150.6 MB in the beginning and 129.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 64.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:41,115 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 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.36 ms. Allocated memory is still 145.2 MB. Free memory was 103.4 MB in the beginning and 92.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.39 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 92.5 MB in the beginning and 180.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 510.39 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 151.2 MB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2294.23 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 150.6 MB in the beginning and 129.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 64.0 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...