java -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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:03:49,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:03:49,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:03:50,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:03:50,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:03:50,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:03:50,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:03:50,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:03:50,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:03:50,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:03:50,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:03:50,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:03:50,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:03:50,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:03:50,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:03:50,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:03:50,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:03:50,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:03:50,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:03:50,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:03:50,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:03:50,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:03:50,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:03:50,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:03:50,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 17:03:50,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:03:50,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:03:50,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:03:50,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:03:50,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:03:50,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:03:50,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:03:50,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:03:50,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:03:50,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:03:50,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:03:50,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:03:50,056 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:03:50,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:03:50,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:03:50,057 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:03:50,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:03:50,058 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:03:50,058 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:03:50,058 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:03:50,058 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:03:50,059 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:03:50,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:03:50,060 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:03:50,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:03:50,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:03:50,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:03:50,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:03:50,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:03:50,061 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:03:50,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:03:50,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:03:50,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:03:50,062 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:03:50,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:03:50,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:03:50,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:03:50,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:03:50,063 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:03:50,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:03:50,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:03:50,064 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:03:50,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:03:50,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:03:50,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:03:50,117 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:03:50,117 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:03:50,118 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c [2019-09-16 17:03:50,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb6b46c2/6f14fe349a80492c8074dbd3d587d9ca/FLAGc2bf94a07 [2019-09-16 17:03:50,685 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:03:50,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_4.c [2019-09-16 17:03:50,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb6b46c2/6f14fe349a80492c8074dbd3d587d9ca/FLAGc2bf94a07 [2019-09-16 17:03:51,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbb6b46c2/6f14fe349a80492c8074dbd3d587d9ca [2019-09-16 17:03:51,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:03:51,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:03:51,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:03:51,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:03:51,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:03:51,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:03:51" (1/1) ... [2019-09-16 17:03:51,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bba43e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:51, skipping insertion in model container [2019-09-16 17:03:51,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:03:51" (1/1) ... [2019-09-16 17:03:51,038 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:03:51,101 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:03:51,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:03:51,503 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:03:51,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:03:51,619 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:03:51,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:51 WrapperNode [2019-09-16 17:03:51,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:03:51,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:03:51,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:03:51,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:03:51,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:51" (1/1) ... [2019-09-16 17:03:51,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:51" (1/1) ... [2019-09-16 17:03:51,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:51" (1/1) ... [2019-09-16 17:03:51,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:51" (1/1) ... [2019-09-16 17:03:51,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:51" (1/1) ... [2019-09-16 17:03:51,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:51" (1/1) ... [2019-09-16 17:03:51,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:51" (1/1) ... [2019-09-16 17:03:51,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:03:51,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:03:51,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:03:51,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:03:51,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:51" (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 [2019-09-16 17:03:51,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:03:51,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:03:51,770 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2019-09-16 17:03:51,770 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2019-09-16 17:03:51,771 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2019-09-16 17:03:51,771 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2019-09-16 17:03:51,771 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2019-09-16 17:03:51,772 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2019-09-16 17:03:51,772 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2019-09-16 17:03:51,772 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2019-09-16 17:03:51,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:03:51,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 17:03:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:03:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 17:03:51,774 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-16 17:03:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2019-09-16 17:03:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-09-16 17:03:51,775 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-09-16 17:03:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2019-09-16 17:03:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2019-09-16 17:03:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2019-09-16 17:03:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2019-09-16 17:03:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:03:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2019-09-16 17:03:51,776 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2019-09-16 17:03:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-16 17:03:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:03:51,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 17:03:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:03:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:03:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:03:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:03:51,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:03:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:03:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:03:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:03:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:03:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-16 17:03:51,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:03:52,602 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:03:52,603 INFO L283 CfgBuilder]: Removed 7 assume(true) statements. [2019-09-16 17:03:52,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:03:52 BoogieIcfgContainer [2019-09-16 17:03:52,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:03:52,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:03:52,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:03:52,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:03:52,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:03:51" (1/3) ... [2019-09-16 17:03:52,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69820f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:03:52, skipping insertion in model container [2019-09-16 17:03:52,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:03:51" (2/3) ... [2019-09-16 17:03:52,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69820f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:03:52, skipping insertion in model container [2019-09-16 17:03:52,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:03:52" (3/3) ... [2019-09-16 17:03:52,613 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_4.c [2019-09-16 17:03:52,622 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:03:52,630 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:03:52,647 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:03:52,669 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:03:52,669 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:03:52,669 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:03:52,669 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:03:52,670 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:03:52,670 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:03:52,670 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:03:52,670 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:03:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2019-09-16 17:03:52,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-16 17:03:52,702 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:03:52,703 INFO L407 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] [2019-09-16 17:03:52,705 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:03:52,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:52,711 INFO L82 PathProgramCache]: Analyzing trace with hash 428561486, now seen corresponding path program 1 times [2019-09-16 17:03:52,713 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:03:52,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:52,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:52,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:52,769 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:03:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:03:53,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:03:53,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:03:53,010 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:03:53,015 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:03:53,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:03:53,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:03:53,032 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 2 states. [2019-09-16 17:03:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:03:53,059 INFO L93 Difference]: Finished difference Result 129 states and 177 transitions. [2019-09-16 17:03:53,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:03:53,061 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 43 [2019-09-16 17:03:53,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:03:53,073 INFO L225 Difference]: With dead ends: 129 [2019-09-16 17:03:53,073 INFO L226 Difference]: Without dead ends: 120 [2019-09-16 17:03:53,075 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:03:53,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-09-16 17:03:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-09-16 17:03:53,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-09-16 17:03:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 167 transitions. [2019-09-16 17:03:53,146 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 167 transitions. Word has length 43 [2019-09-16 17:03:53,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:03:53,146 INFO L475 AbstractCegarLoop]: Abstraction has 120 states and 167 transitions. [2019-09-16 17:03:53,147 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:03:53,147 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 167 transitions. [2019-09-16 17:03:53,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-16 17:03:53,155 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:03:53,156 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 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] [2019-09-16 17:03:53,156 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:03:53,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:53,157 INFO L82 PathProgramCache]: Analyzing trace with hash -983769302, now seen corresponding path program 1 times [2019-09-16 17:03:53,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:03:53,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:53,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:53,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:03:53,161 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:03:53,222 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-16 17:03:53,222 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-16 17:03:53,222 INFO L170 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-16 17:03:53,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:03:53,289 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2019-09-16 17:03:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:03:53,371 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 48 with the following transitions: [2019-09-16 17:03:53,375 INFO L207 CegarAbsIntRunner]: [114], [118], [121], [126], [131], [146], [147], [150], [152], [158], [180], [186], [251], [253], [254], [255], [259], [262], [266], [268], [270], [272], [275], [330], [331], [335], [340], [342], [343], [346], [348], [354], [358], [360], [361], [362], [374], [376], [377], [378], [379], [380], [382], [383], [384] [2019-09-16 17:03:53,441 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:03:53,441 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:03:53,506 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:03:53,508 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 56 root evaluator evaluations with a maximum evaluation depth of 0. Performed 56 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 80 variables. [2019-09-16 17:03:53,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:03:53,511 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:03:53,550 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:03:53,550 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:03:53,553 INFO L420 sIntCurrentIteration]: We unified 46 AI predicates to 46 [2019-09-16 17:03:53,553 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:03:53,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:03:53,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:03:53,554 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:03:53,555 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:03:53,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:03:53,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:03:53,556 INFO L87 Difference]: Start difference. First operand 120 states and 167 transitions. Second operand 2 states. [2019-09-16 17:03:53,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:03:53,557 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:03:53,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:03:53,557 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 47 [2019-09-16 17:03:53,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:03:53,557 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:03:53,557 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:03:53,558 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:03:53,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:03:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:03:53,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:03:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:03:53,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2019-09-16 17:03:53,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:03:53,560 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:03:53,560 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:03:53,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:03:53,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:03:53,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:03:53 BoogieIcfgContainer [2019-09-16 17:03:53,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:03:53,567 INFO L168 Benchmark]: Toolchain (without parser) took 2544.13 ms. Allocated memory was 138.9 MB in the beginning and 221.8 MB in the end (delta: 82.8 MB). Free memory was 84.2 MB in the beginning and 145.3 MB in the end (delta: -61.1 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:53,568 INFO L168 Benchmark]: CDTParser took 1.08 ms. Allocated memory is still 138.9 MB. Free memory was 103.5 MB in the beginning and 103.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:03:53,569 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.17 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 84.0 MB in the beginning and 169.2 MB in the end (delta: -85.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:53,570 INFO L168 Benchmark]: Boogie Preprocessor took 82.76 ms. Allocated memory is still 199.8 MB. Free memory was 169.2 MB in the beginning and 164.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:53,571 INFO L168 Benchmark]: RCFGBuilder took 900.37 ms. Allocated memory is still 199.8 MB. Free memory was 164.5 MB in the beginning and 104.9 MB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:03:53,572 INFO L168 Benchmark]: TraceAbstraction took 959.36 ms. Allocated memory was 199.8 MB in the beginning and 221.8 MB in the end (delta: 22.0 MB). Free memory was 104.3 MB in the beginning and 145.3 MB in the end (delta: -41.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:03:53,575 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.08 ms. Allocated memory is still 138.9 MB. Free memory was 103.5 MB in the beginning and 103.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 597.17 ms. Allocated memory was 138.9 MB in the beginning and 199.8 MB in the end (delta: 60.8 MB). Free memory was 84.0 MB in the beginning and 169.2 MB in the end (delta: -85.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.76 ms. Allocated memory is still 199.8 MB. Free memory was 169.2 MB in the beginning and 164.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 900.37 ms. Allocated memory is still 199.8 MB. Free memory was 164.5 MB in the beginning and 104.9 MB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 959.36 ms. Allocated memory was 199.8 MB in the beginning and 221.8 MB in the end (delta: 22.0 MB). Free memory was 104.3 MB in the beginning and 145.3 MB in the end (delta: -41.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 458]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 129 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 178 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 3.130434782608696 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1764 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...