/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/indp4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:47:21,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:47:21,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:47:21,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:47:21,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:47:21,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:47:21,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:47:21,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:47:21,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:47:21,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:47:21,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:47:21,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:47:21,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:47:21,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:47:21,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:47:21,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:47:21,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:47:21,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:47:21,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:47:21,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:47:21,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:47:21,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:47:21,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:47:21,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:47:21,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:47:21,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:47:21,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:47:21,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:47:21,865 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 00:47:21,875 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:47:21,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:47:21,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:47:21,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:47:21,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:47:21,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:47:21,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:47:21,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:47:21,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:47:21,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:47:21,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:47:21,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:47:21,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:47:21,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:47:21,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:47:21,879 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:47:21,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:47:21,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:47:21,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:47:21,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:47:21,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:47:21,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:47:21,880 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:47:22,168 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:47:22,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:47:22,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:47:22,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:47:22,185 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:47:22,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp4f.c [2020-07-18 00:47:22,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc79cb47/8a436148c2084431967c179d451de01c/FLAG5d219c450 [2020-07-18 00:47:22,685 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:47:22,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp4f.c [2020-07-18 00:47:22,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc79cb47/8a436148c2084431967c179d451de01c/FLAG5d219c450 [2020-07-18 00:47:23,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc79cb47/8a436148c2084431967c179d451de01c [2020-07-18 00:47:23,098 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:47:23,101 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:47:23,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:23,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:47:23,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:47:23,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:23" (1/1) ... [2020-07-18 00:47:23,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c045c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:23, skipping insertion in model container [2020-07-18 00:47:23,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:23" (1/1) ... [2020-07-18 00:47:23,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:47:23,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:47:23,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:23,397 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:47:23,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:47:23,439 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:47:23,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:23 WrapperNode [2020-07-18 00:47:23,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:47:23,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:47:23,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:47:23,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:47:23,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:23" (1/1) ... [2020-07-18 00:47:23,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:23" (1/1) ... [2020-07-18 00:47:23,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:23" (1/1) ... [2020-07-18 00:47:23,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:23" (1/1) ... [2020-07-18 00:47:23,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:23" (1/1) ... [2020-07-18 00:47:23,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:23" (1/1) ... [2020-07-18 00:47:23,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:23" (1/1) ... [2020-07-18 00:47:23,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:47:23,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:47:23,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:47:23,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:47:23,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:23" (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 00:47:23,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:47:23,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:47:23,644 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 00:47:23,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:47:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:47:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:47:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:47:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 00:47:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:47:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:47:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-18 00:47:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:47:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-18 00:47:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 00:47:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 00:47:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:47:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:47:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 00:47:24,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:47:24,113 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-18 00:47:24,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:24 BoogieIcfgContainer [2020-07-18 00:47:24,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:47:24,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:47:24,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:47:24,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:47:24,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:47:23" (1/3) ... [2020-07-18 00:47:24,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c63a834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:24, skipping insertion in model container [2020-07-18 00:47:24,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:23" (2/3) ... [2020-07-18 00:47:24,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c63a834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:24, skipping insertion in model container [2020-07-18 00:47:24,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:24" (3/3) ... [2020-07-18 00:47:24,135 INFO L109 eAbstractionObserver]: Analyzing ICFG indp4f.c [2020-07-18 00:47:24,146 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:47:24,154 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:47:24,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:47:24,191 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:47:24,191 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:47:24,191 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:47:24,192 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:47:24,192 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:47:24,192 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:47:24,192 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:47:24,192 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:47:24,208 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-07-18 00:47:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-18 00:47:24,219 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:24,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:47:24,221 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:24,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:24,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1846170158, now seen corresponding path program 1 times [2020-07-18 00:47:24,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:24,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710379385] [2020-07-18 00:47:24,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:24,485 INFO L280 TraceCheckUtils]: 0: Hoare triple {78#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {66#true} is VALID [2020-07-18 00:47:24,486 INFO L280 TraceCheckUtils]: 1: Hoare triple {66#true} #valid := #valid[0 := 0]; {66#true} is VALID [2020-07-18 00:47:24,487 INFO L280 TraceCheckUtils]: 2: Hoare triple {66#true} assume 0 < #StackHeapBarrier; {66#true} is VALID [2020-07-18 00:47:24,487 INFO L280 TraceCheckUtils]: 3: Hoare triple {66#true} ~N~0 := 0; {66#true} is VALID [2020-07-18 00:47:24,488 INFO L280 TraceCheckUtils]: 4: Hoare triple {66#true} assume true; {66#true} is VALID [2020-07-18 00:47:24,488 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {66#true} {66#true} #121#return; {66#true} is VALID [2020-07-18 00:47:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:24,498 INFO L280 TraceCheckUtils]: 0: Hoare triple {66#true} ~cond := #in~cond; {66#true} is VALID [2020-07-18 00:47:24,499 INFO L280 TraceCheckUtils]: 1: Hoare triple {66#true} assume !(0 == ~cond); {66#true} is VALID [2020-07-18 00:47:24,499 INFO L280 TraceCheckUtils]: 2: Hoare triple {66#true} assume true; {66#true} is VALID [2020-07-18 00:47:24,500 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {66#true} {66#true} #117#return; {66#true} is VALID [2020-07-18 00:47:24,502 INFO L263 TraceCheckUtils]: 0: Hoare triple {66#true} call ULTIMATE.init(); {78#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:24,503 INFO L280 TraceCheckUtils]: 1: Hoare triple {78#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {66#true} is VALID [2020-07-18 00:47:24,504 INFO L280 TraceCheckUtils]: 2: Hoare triple {66#true} #valid := #valid[0 := 0]; {66#true} is VALID [2020-07-18 00:47:24,504 INFO L280 TraceCheckUtils]: 3: Hoare triple {66#true} assume 0 < #StackHeapBarrier; {66#true} is VALID [2020-07-18 00:47:24,504 INFO L280 TraceCheckUtils]: 4: Hoare triple {66#true} ~N~0 := 0; {66#true} is VALID [2020-07-18 00:47:24,505 INFO L280 TraceCheckUtils]: 5: Hoare triple {66#true} assume true; {66#true} is VALID [2020-07-18 00:47:24,505 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {66#true} {66#true} #121#return; {66#true} is VALID [2020-07-18 00:47:24,506 INFO L263 TraceCheckUtils]: 7: Hoare triple {66#true} call #t~ret9 := main(); {66#true} is VALID [2020-07-18 00:47:24,506 INFO L280 TraceCheckUtils]: 8: Hoare triple {66#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {66#true} is VALID [2020-07-18 00:47:24,506 INFO L280 TraceCheckUtils]: 9: Hoare triple {66#true} ~N~0 := #t~nondet0; {66#true} is VALID [2020-07-18 00:47:24,507 INFO L280 TraceCheckUtils]: 10: Hoare triple {66#true} havoc #t~nondet0; {66#true} is VALID [2020-07-18 00:47:24,507 INFO L280 TraceCheckUtils]: 11: Hoare triple {66#true} assume !(~N~0 <= 0); {66#true} is VALID [2020-07-18 00:47:24,508 INFO L263 TraceCheckUtils]: 12: Hoare triple {66#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {66#true} is VALID [2020-07-18 00:47:24,508 INFO L280 TraceCheckUtils]: 13: Hoare triple {66#true} ~cond := #in~cond; {66#true} is VALID [2020-07-18 00:47:24,509 INFO L280 TraceCheckUtils]: 14: Hoare triple {66#true} assume !(0 == ~cond); {66#true} is VALID [2020-07-18 00:47:24,509 INFO L280 TraceCheckUtils]: 15: Hoare triple {66#true} assume true; {66#true} is VALID [2020-07-18 00:47:24,509 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {66#true} {66#true} #117#return; {66#true} is VALID [2020-07-18 00:47:24,510 INFO L280 TraceCheckUtils]: 17: Hoare triple {66#true} havoc ~i~0; {66#true} is VALID [2020-07-18 00:47:24,510 INFO L280 TraceCheckUtils]: 18: Hoare triple {66#true} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0); srcloc: L26 {66#true} is VALID [2020-07-18 00:47:24,511 INFO L280 TraceCheckUtils]: 19: Hoare triple {66#true} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {66#true} is VALID [2020-07-18 00:47:24,511 INFO L280 TraceCheckUtils]: 20: Hoare triple {66#true} ~i~0 := 0; {66#true} is VALID [2020-07-18 00:47:24,512 INFO L280 TraceCheckUtils]: 21: Hoare triple {66#true} assume !true; {67#false} is VALID [2020-07-18 00:47:24,513 INFO L280 TraceCheckUtils]: 22: Hoare triple {67#false} ~i~0 := 0; {67#false} is VALID [2020-07-18 00:47:24,513 INFO L280 TraceCheckUtils]: 23: Hoare triple {67#false} assume !true; {67#false} is VALID [2020-07-18 00:47:24,514 INFO L280 TraceCheckUtils]: 24: Hoare triple {67#false} ~i~0 := 0; {67#false} is VALID [2020-07-18 00:47:24,514 INFO L280 TraceCheckUtils]: 25: Hoare triple {67#false} assume !true; {67#false} is VALID [2020-07-18 00:47:24,514 INFO L280 TraceCheckUtils]: 26: Hoare triple {67#false} ~i~0 := 0; {67#false} is VALID [2020-07-18 00:47:24,515 INFO L280 TraceCheckUtils]: 27: Hoare triple {67#false} assume !!(~i~0 < ~N~0); {67#false} is VALID [2020-07-18 00:47:24,515 INFO L280 TraceCheckUtils]: 28: Hoare triple {67#false} SUMMARY for call #t~mem8 := read~int(~a~0.base, ~a~0.offset + 8 * ~i~0, 8); srcloc: L45 {67#false} is VALID [2020-07-18 00:47:24,516 INFO L263 TraceCheckUtils]: 29: Hoare triple {67#false} call __VERIFIER_assert((if #t~mem8 == ~i~0 * ~i~0 then 1 else 0)); {67#false} is VALID [2020-07-18 00:47:24,516 INFO L280 TraceCheckUtils]: 30: Hoare triple {67#false} ~cond := #in~cond; {67#false} is VALID [2020-07-18 00:47:24,517 INFO L280 TraceCheckUtils]: 31: Hoare triple {67#false} assume 0 == ~cond; {67#false} is VALID [2020-07-18 00:47:24,517 INFO L280 TraceCheckUtils]: 32: Hoare triple {67#false} assume !false; {67#false} is VALID [2020-07-18 00:47:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:47:24,526 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:24,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710379385] [2020-07-18 00:47:24,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:24,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 00:47:24,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277660861] [2020-07-18 00:47:24,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-18 00:47:24,543 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:24,547 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 00:47:24,605 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:24,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 00:47:24,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:24,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 00:47:24,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:47:24,619 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2020-07-18 00:47:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:25,092 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2020-07-18 00:47:25,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 00:47:25,093 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-18 00:47:25,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:25,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:25,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2020-07-18 00:47:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 00:47:25,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2020-07-18 00:47:25,137 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 128 transitions. [2020-07-18 00:47:25,287 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 128 edges. 128 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:25,301 INFO L225 Difference]: With dead ends: 109 [2020-07-18 00:47:25,302 INFO L226 Difference]: Without dead ends: 56 [2020-07-18 00:47:25,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 00:47:25,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-18 00:47:25,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-18 00:47:25,395 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:25,395 INFO L82 GeneralOperation]: Start isEquivalent. First operand 56 states. Second operand 56 states. [2020-07-18 00:47:25,396 INFO L74 IsIncluded]: Start isIncluded. First operand 56 states. Second operand 56 states. [2020-07-18 00:47:25,396 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 56 states. [2020-07-18 00:47:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:25,402 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-07-18 00:47:25,402 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-07-18 00:47:25,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:25,404 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:25,404 INFO L74 IsIncluded]: Start isIncluded. First operand 56 states. Second operand 56 states. [2020-07-18 00:47:25,404 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 56 states. [2020-07-18 00:47:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:25,410 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-07-18 00:47:25,410 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-07-18 00:47:25,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:25,411 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:25,411 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:25,411 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-18 00:47:25,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-07-18 00:47:25,417 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 33 [2020-07-18 00:47:25,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:25,418 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-07-18 00:47:25,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 00:47:25,418 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 56 states and 59 transitions. [2020-07-18 00:47:25,513 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-07-18 00:47:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-18 00:47:25,515 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:25,516 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 00:47:25,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:47:25,517 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:25,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:25,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1457656721, now seen corresponding path program 1 times [2020-07-18 00:47:25,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:25,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237278823] [2020-07-18 00:47:25,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:25,653 INFO L280 TraceCheckUtils]: 0: Hoare triple {537#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {523#true} is VALID [2020-07-18 00:47:25,653 INFO L280 TraceCheckUtils]: 1: Hoare triple {523#true} #valid := #valid[0 := 0]; {523#true} is VALID [2020-07-18 00:47:25,654 INFO L280 TraceCheckUtils]: 2: Hoare triple {523#true} assume 0 < #StackHeapBarrier; {523#true} is VALID [2020-07-18 00:47:25,654 INFO L280 TraceCheckUtils]: 3: Hoare triple {523#true} ~N~0 := 0; {523#true} is VALID [2020-07-18 00:47:25,654 INFO L280 TraceCheckUtils]: 4: Hoare triple {523#true} assume true; {523#true} is VALID [2020-07-18 00:47:25,655 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {523#true} {523#true} #121#return; {523#true} is VALID [2020-07-18 00:47:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:47:25,663 INFO L280 TraceCheckUtils]: 0: Hoare triple {523#true} ~cond := #in~cond; {523#true} is VALID [2020-07-18 00:47:25,663 INFO L280 TraceCheckUtils]: 1: Hoare triple {523#true} assume !(0 == ~cond); {523#true} is VALID [2020-07-18 00:47:25,664 INFO L280 TraceCheckUtils]: 2: Hoare triple {523#true} assume true; {523#true} is VALID [2020-07-18 00:47:25,665 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {523#true} {531#(<= 1 ~N~0)} #117#return; {531#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:25,666 INFO L263 TraceCheckUtils]: 0: Hoare triple {523#true} call ULTIMATE.init(); {537#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 00:47:25,667 INFO L280 TraceCheckUtils]: 1: Hoare triple {537#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {523#true} is VALID [2020-07-18 00:47:25,667 INFO L280 TraceCheckUtils]: 2: Hoare triple {523#true} #valid := #valid[0 := 0]; {523#true} is VALID [2020-07-18 00:47:25,667 INFO L280 TraceCheckUtils]: 3: Hoare triple {523#true} assume 0 < #StackHeapBarrier; {523#true} is VALID [2020-07-18 00:47:25,668 INFO L280 TraceCheckUtils]: 4: Hoare triple {523#true} ~N~0 := 0; {523#true} is VALID [2020-07-18 00:47:25,668 INFO L280 TraceCheckUtils]: 5: Hoare triple {523#true} assume true; {523#true} is VALID [2020-07-18 00:47:25,668 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {523#true} {523#true} #121#return; {523#true} is VALID [2020-07-18 00:47:25,668 INFO L263 TraceCheckUtils]: 7: Hoare triple {523#true} call #t~ret9 := main(); {523#true} is VALID [2020-07-18 00:47:25,669 INFO L280 TraceCheckUtils]: 8: Hoare triple {523#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {523#true} is VALID [2020-07-18 00:47:25,669 INFO L280 TraceCheckUtils]: 9: Hoare triple {523#true} ~N~0 := #t~nondet0; {523#true} is VALID [2020-07-18 00:47:25,669 INFO L280 TraceCheckUtils]: 10: Hoare triple {523#true} havoc #t~nondet0; {523#true} is VALID [2020-07-18 00:47:25,670 INFO L280 TraceCheckUtils]: 11: Hoare triple {523#true} assume !(~N~0 <= 0); {531#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:25,671 INFO L263 TraceCheckUtils]: 12: Hoare triple {531#(<= 1 ~N~0)} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {523#true} is VALID [2020-07-18 00:47:25,671 INFO L280 TraceCheckUtils]: 13: Hoare triple {523#true} ~cond := #in~cond; {523#true} is VALID [2020-07-18 00:47:25,672 INFO L280 TraceCheckUtils]: 14: Hoare triple {523#true} assume !(0 == ~cond); {523#true} is VALID [2020-07-18 00:47:25,672 INFO L280 TraceCheckUtils]: 15: Hoare triple {523#true} assume true; {523#true} is VALID [2020-07-18 00:47:25,673 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {523#true} {531#(<= 1 ~N~0)} #117#return; {531#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:25,674 INFO L280 TraceCheckUtils]: 17: Hoare triple {531#(<= 1 ~N~0)} havoc ~i~0; {531#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:25,675 INFO L280 TraceCheckUtils]: 18: Hoare triple {531#(<= 1 ~N~0)} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(8 * ~N~0); srcloc: L26 {531#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:25,675 INFO L280 TraceCheckUtils]: 19: Hoare triple {531#(<= 1 ~N~0)} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {531#(<= 1 ~N~0)} is VALID [2020-07-18 00:47:25,676 INFO L280 TraceCheckUtils]: 20: Hoare triple {531#(<= 1 ~N~0)} ~i~0 := 0; {536#(and (= 0 main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-18 00:47:25,677 INFO L280 TraceCheckUtils]: 21: Hoare triple {536#(and (= 0 main_~i~0) (<= 1 ~N~0))} assume !(~i~0 < ~N~0); {524#false} is VALID [2020-07-18 00:47:25,678 INFO L280 TraceCheckUtils]: 22: Hoare triple {524#false} ~i~0 := 0; {524#false} is VALID [2020-07-18 00:47:25,678 INFO L280 TraceCheckUtils]: 23: Hoare triple {524#false} assume !(~i~0 < ~N~0); {524#false} is VALID [2020-07-18 00:47:25,679 INFO L280 TraceCheckUtils]: 24: Hoare triple {524#false} ~i~0 := 0; {524#false} is VALID [2020-07-18 00:47:25,679 INFO L280 TraceCheckUtils]: 25: Hoare triple {524#false} assume !(~i~0 < ~N~0); {524#false} is VALID [2020-07-18 00:47:25,679 INFO L280 TraceCheckUtils]: 26: Hoare triple {524#false} ~i~0 := 0; {524#false} is VALID [2020-07-18 00:47:25,679 INFO L280 TraceCheckUtils]: 27: Hoare triple {524#false} assume !!(~i~0 < ~N~0); {524#false} is VALID [2020-07-18 00:47:25,680 INFO L280 TraceCheckUtils]: 28: Hoare triple {524#false} SUMMARY for call #t~mem8 := read~int(~a~0.base, ~a~0.offset + 8 * ~i~0, 8); srcloc: L45 {524#false} is VALID [2020-07-18 00:47:25,680 INFO L263 TraceCheckUtils]: 29: Hoare triple {524#false} call __VERIFIER_assert((if #t~mem8 == ~i~0 * ~i~0 then 1 else 0)); {524#false} is VALID [2020-07-18 00:47:25,680 INFO L280 TraceCheckUtils]: 30: Hoare triple {524#false} ~cond := #in~cond; {524#false} is VALID [2020-07-18 00:47:25,681 INFO L280 TraceCheckUtils]: 31: Hoare triple {524#false} assume 0 == ~cond; {524#false} is VALID [2020-07-18 00:47:25,681 INFO L280 TraceCheckUtils]: 32: Hoare triple {524#false} assume !false; {524#false} is VALID [2020-07-18 00:47:25,683 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 00:47:25,689 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:47:25,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237278823] [2020-07-18 00:47:25,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:47:25,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-18 00:47:25,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162367910] [2020-07-18 00:47:25,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-18 00:47:25,692 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:47:25,692 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-18 00:47:25,732 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 00:47:25,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-18 00:47:25,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:47:25,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-18 00:47:25,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-18 00:47:25,733 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 5 states. [2020-07-18 00:47:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:26,334 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-07-18 00:47:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-18 00:47:26,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-07-18 00:47:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:47:26,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:47:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2020-07-18 00:47:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-18 00:47:26,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2020-07-18 00:47:26,354 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 117 transitions. [2020-07-18 00:47:26,497 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 117 edges. 117 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:47:26,501 INFO L225 Difference]: With dead ends: 108 [2020-07-18 00:47:26,502 INFO L226 Difference]: Without dead ends: 78 [2020-07-18 00:47:26,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-18 00:47:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-18 00:47:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2020-07-18 00:47:26,603 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:47:26,603 INFO L82 GeneralOperation]: Start isEquivalent. First operand 78 states. Second operand 59 states. [2020-07-18 00:47:26,604 INFO L74 IsIncluded]: Start isIncluded. First operand 78 states. Second operand 59 states. [2020-07-18 00:47:26,604 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 59 states. [2020-07-18 00:47:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:26,609 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-07-18 00:47:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-07-18 00:47:26,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:26,610 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:26,610 INFO L74 IsIncluded]: Start isIncluded. First operand 59 states. Second operand 78 states. [2020-07-18 00:47:26,611 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 78 states. [2020-07-18 00:47:26,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:47:26,615 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-07-18 00:47:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2020-07-18 00:47:26,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:47:26,617 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:47:26,617 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:47:26,617 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:47:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-18 00:47:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-07-18 00:47:26,620 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 33 [2020-07-18 00:47:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:47:26,621 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-07-18 00:47:26,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-18 00:47:26,621 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 59 states and 62 transitions. [2020-07-18 00:47:26,709 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 00:47:26,709 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-07-18 00:47:26,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-18 00:47:26,711 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:47:26,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:47:26,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:47:26,712 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:47:26,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:47:26,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1203755678, now seen corresponding path program 1 times [2020-07-18 00:47:26,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:47:26,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217613413] [2020-07-18 00:47:26,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:47:26,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-18 00:47:26,751 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 00:47:26,758 INFO L168 Benchmark]: Toolchain (without parser) took 3657.27 ms. Allocated memory was 137.9 MB in the beginning and 248.5 MB in the end (delta: 110.6 MB). Free memory was 101.9 MB in the beginning and 116.4 MB in the end (delta: -14.6 MB). Peak memory consumption was 96.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:26,759 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-18 00:47:26,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.26 ms. Allocated memory is still 137.9 MB. Free memory was 101.4 MB in the beginning and 90.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:26,761 INFO L168 Benchmark]: Boogie Preprocessor took 132.98 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 90.6 MB in the beginning and 179.9 MB in the end (delta: -89.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:26,762 INFO L168 Benchmark]: RCFGBuilder took 543.89 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 151.3 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:26,763 INFO L168 Benchmark]: TraceAbstraction took 2635.38 ms. Allocated memory was 202.4 MB in the beginning and 248.5 MB in the end (delta: 46.1 MB). Free memory was 151.3 MB in the beginning and 116.4 MB in the end (delta: 34.8 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-07-18 00:47:26,768 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 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 321.26 ms. Allocated memory is still 137.9 MB. Free memory was 101.4 MB in the beginning and 90.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.98 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 90.6 MB in the beginning and 179.9 MB in the end (delta: -89.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 543.89 ms. Allocated memory is still 202.4 MB. Free memory was 179.9 MB in the beginning and 151.3 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2635.38 ms. Allocated memory was 202.4 MB in the beginning and 248.5 MB in the end (delta: 46.1 MB). Free memory was 151.3 MB in the beginning and 116.4 MB in the end (delta: 34.8 MB). Peak memory consumption was 81.0 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...