/usr/bin/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 04:03:52,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 04:03:52,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 04:03:52,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 04:03:52,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 04:03:52,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 04:03:52,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 04:03:52,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 04:03:52,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 04:03:52,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 04:03:52,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 04:03:52,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 04:03:52,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 04:03:52,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 04:03:52,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 04:03:52,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 04:03:52,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 04:03:52,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 04:03:52,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 04:03:52,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 04:03:52,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 04:03:52,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 04:03:52,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 04:03:52,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 04:03:52,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 04:03:52,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 04:03:52,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 04:03:52,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 04:03:52,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 04:03:52,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-20 04:03:52,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 04:03:52,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 04:03:52,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 04:03:52,183 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 04:03:52,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 04:03:52,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 04:03:52,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 04:03:52,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 04:03:52,219 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 04:03:52,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 04:03:52,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 04:03:52,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 04:03:52,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 04:03:52,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 04:03:52,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 04:03:52,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 04:03:52,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 04:03:52,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 04:03:52,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 04:03:52,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 04:03:52,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 04:03:52,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 04:03:52,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 04:03:52,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 04:03:52,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 04:03:52,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 04:03:52,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 04:03:52,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 04:03:52,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 04:03:52,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 04:03:52,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 04:03:52,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 04:03:52,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 04:03:52,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 04:03:52,515 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 04:03:52,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 04:03:52,532 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 04:03:52,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 04:03:52,534 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 04:03:52,534 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-07-20 04:03:52,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a8b467a7/b534c702b2134c34a61705e733e5ff04/FLAGf126272ad [2020-07-20 04:03:53,153 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 04:03:53,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-07-20 04:03:53,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a8b467a7/b534c702b2134c34a61705e733e5ff04/FLAGf126272ad [2020-07-20 04:03:53,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a8b467a7/b534c702b2134c34a61705e733e5ff04 [2020-07-20 04:03:53,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 04:03:53,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 04:03:53,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 04:03:53,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 04:03:53,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 04:03:53,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:03:53" (1/1) ... [2020-07-20 04:03:53,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d56b154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:03:53, skipping insertion in model container [2020-07-20 04:03:53,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:03:53" (1/1) ... [2020-07-20 04:03:53,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 04:03:53,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 04:03:53,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:03:53,976 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 04:03:54,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 04:03:54,082 INFO L208 MainTranslator]: Completed translation [2020-07-20 04:03:54,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:03:54 WrapperNode [2020-07-20 04:03:54,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 04:03:54,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 04:03:54,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 04:03:54,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 04:03:54,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:03:54" (1/1) ... [2020-07-20 04:03:54,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:03:54" (1/1) ... [2020-07-20 04:03:54,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:03:54" (1/1) ... [2020-07-20 04:03:54,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:03:54" (1/1) ... [2020-07-20 04:03:54,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:03:54" (1/1) ... [2020-07-20 04:03:54,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:03:54" (1/1) ... [2020-07-20 04:03:54,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:03:54" (1/1) ... [2020-07-20 04:03:54,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 04:03:54,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 04:03:54,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 04:03:54,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 04:03:54,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:03:54" (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 [2020-07-20 04:03:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 04:03:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 04:03:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 04:03:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-20 04:03:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-07-20 04:03:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-07-20 04:03:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-07-20 04:03:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-07-20 04:03:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-07-20 04:03:54,250 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-07-20 04:03:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-07-20 04:03:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 04:03:54,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 04:03:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 04:03:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 04:03:54,251 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 04:03:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-20 04:03:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-20 04:03:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-20 04:03:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-07-20 04:03:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-07-20 04:03:54,252 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-07-20 04:03:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-07-20 04:03:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 04:03:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-07-20 04:03:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-07-20 04:03:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-20 04:03:54,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 04:03:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 04:03:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 04:03:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 04:03:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 04:03:54,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 04:03:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 04:03:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 04:03:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 04:03:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 04:03:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 04:03:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 04:03:54,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 04:03:55,224 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 04:03:55,224 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-20 04:03:55,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:03:55 BoogieIcfgContainer [2020-07-20 04:03:55,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 04:03:55,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 04:03:55,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 04:03:55,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 04:03:55,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:03:53" (1/3) ... [2020-07-20 04:03:55,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3f0ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:03:55, skipping insertion in model container [2020-07-20 04:03:55,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:03:54" (2/3) ... [2020-07-20 04:03:55,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3f0ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:03:55, skipping insertion in model container [2020-07-20 04:03:55,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:03:55" (3/3) ... [2020-07-20 04:03:55,243 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_5.c [2020-07-20 04:03:55,254 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 04:03:55,265 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 04:03:55,279 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 04:03:55,303 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 04:03:55,304 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 04:03:55,304 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 04:03:55,304 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 04:03:55,304 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 04:03:55,305 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 04:03:55,305 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 04:03:55,305 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 04:03:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-07-20 04:03:55,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-20 04:03:55,340 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:03:55,341 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] [2020-07-20 04:03:55,342 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:03:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:03:55,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1328586124, now seen corresponding path program 1 times [2020-07-20 04:03:55,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:03:55,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400328433] [2020-07-20 04:03:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5703d5b1 [2020-07-20 04:03:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:55,939 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-07-20 04:03:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:03:56,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400328433] [2020-07-20 04:03:56,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:03:56,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:03:56,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811956072] [2020-07-20 04:03:56,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 04:03:56,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:03:56,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 04:03:56,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:03:56,087 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 5 states. [2020-07-20 04:03:56,243 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-07-20 04:03:59,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:03:59,324 INFO L93 Difference]: Finished difference Result 267 states and 410 transitions. [2020-07-20 04:03:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 04:03:59,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-07-20 04:03:59,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:03:59,345 INFO L225 Difference]: With dead ends: 267 [2020-07-20 04:03:59,345 INFO L226 Difference]: Without dead ends: 142 [2020-07-20 04:03:59,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:03:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-20 04:03:59,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 121. [2020-07-20 04:03:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-20 04:03:59,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 168 transitions. [2020-07-20 04:03:59,454 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 168 transitions. Word has length 43 [2020-07-20 04:03:59,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:03:59,454 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 168 transitions. [2020-07-20 04:03:59,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 04:03:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 168 transitions. [2020-07-20 04:03:59,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 04:03:59,459 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:03:59,459 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] [2020-07-20 04:03:59,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 04:03:59,460 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:03:59,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:03:59,460 INFO L82 PathProgramCache]: Analyzing trace with hash -294008176, now seen corresponding path program 1 times [2020-07-20 04:03:59,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:03:59,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144220751] [2020-07-20 04:03:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5703d5b1 [2020-07-20 04:03:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:59,639 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-07-20 04:03:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:03:59,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:03:59,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144220751] [2020-07-20 04:03:59,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981279856] [2020-07-20 04:03:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3278ff99 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:00,007 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3278ff99 issued 2 check-sat command(s) [2020-07-20 04:04:00,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:04:00,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 04:04:00,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:04:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 04:04:00,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:04:00,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2020-07-20 04:04:00,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242878532] [2020-07-20 04:04:00,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 04:04:00,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:04:00,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 04:04:00,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 04:04:00,059 INFO L87 Difference]: Start difference. First operand 121 states and 168 transitions. Second operand 7 states. [2020-07-20 04:04:01,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:04:01,360 INFO L93 Difference]: Finished difference Result 267 states and 385 transitions. [2020-07-20 04:04:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 04:04:01,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-07-20 04:04:01,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:04:01,369 INFO L225 Difference]: With dead ends: 267 [2020-07-20 04:04:01,371 INFO L226 Difference]: Without dead ends: 162 [2020-07-20 04:04:01,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 04:04:01,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-20 04:04:01,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 123. [2020-07-20 04:04:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-20 04:04:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 170 transitions. [2020-07-20 04:04:01,397 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 170 transitions. Word has length 45 [2020-07-20 04:04:01,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:04:01,397 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 170 transitions. [2020-07-20 04:04:01,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 04:04:01,397 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 170 transitions. [2020-07-20 04:04:01,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 04:04:01,400 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:04:01,400 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-07-20 04:04:01,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 04:04:01,615 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:04:01,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:04:01,615 INFO L82 PathProgramCache]: Analyzing trace with hash 677722022, now seen corresponding path program 1 times [2020-07-20 04:04:01,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:04:01,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41087077] [2020-07-20 04:04:01,617 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5703d5b1 [2020-07-20 04:04:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 04:04:01,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41087077] [2020-07-20 04:04:01,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910211099] [2020-07-20 04:04:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7278bc96 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:02,099 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7278bc96 issued 2 check-sat command(s) [2020-07-20 04:04:02,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:04:02,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 04:04:02,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:04:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 04:04:02,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 04:04:02,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-07-20 04:04:02,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884222238] [2020-07-20 04:04:02,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 04:04:02,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:04:02,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 04:04:02,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 04:04:02,130 INFO L87 Difference]: Start difference. First operand 123 states and 170 transitions. Second operand 3 states. [2020-07-20 04:04:02,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:04:02,170 INFO L93 Difference]: Finished difference Result 174 states and 236 transitions. [2020-07-20 04:04:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 04:04:02,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-20 04:04:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:04:02,174 INFO L225 Difference]: With dead ends: 174 [2020-07-20 04:04:02,176 INFO L226 Difference]: Without dead ends: 131 [2020-07-20 04:04:02,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 04:04:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-20 04:04:02,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2020-07-20 04:04:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-20 04:04:02,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2020-07-20 04:04:02,215 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 51 [2020-07-20 04:04:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:04:02,215 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2020-07-20 04:04:02,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 04:04:02,216 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2020-07-20 04:04:02,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 04:04:02,221 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:04:02,221 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1] [2020-07-20 04:04:02,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:02,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:04:02,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:04:02,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1725617515, now seen corresponding path program 1 times [2020-07-20 04:04:02,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:04:02,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302583258] [2020-07-20 04:04:02,425 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5703d5b1 [2020-07-20 04:04:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 04:04:02,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302583258] [2020-07-20 04:04:02,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959801782] [2020-07-20 04:04:02,653 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3250bcf5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:02,809 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3250bcf5 issued 2 check-sat command(s) [2020-07-20 04:04:02,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:04:02,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 04:04:02,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:04:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 04:04:02,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 04:04:02,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-07-20 04:04:02,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862830822] [2020-07-20 04:04:02,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 04:04:02,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:04:02,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 04:04:02,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 04:04:02,839 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand 3 states. [2020-07-20 04:04:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:04:02,876 INFO L93 Difference]: Finished difference Result 184 states and 252 transitions. [2020-07-20 04:04:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 04:04:02,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 04:04:02,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:04:02,878 INFO L225 Difference]: With dead ends: 184 [2020-07-20 04:04:02,878 INFO L226 Difference]: Without dead ends: 141 [2020-07-20 04:04:02,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 04:04:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-20 04:04:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 124. [2020-07-20 04:04:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-07-20 04:04:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2020-07-20 04:04:02,896 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 170 transitions. Word has length 52 [2020-07-20 04:04:02,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:04:02,897 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 170 transitions. [2020-07-20 04:04:02,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 04:04:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 170 transitions. [2020-07-20 04:04:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 04:04:02,899 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:04:02,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-07-20 04:04:03,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:03,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:04:03,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:04:03,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1886904899, now seen corresponding path program 1 times [2020-07-20 04:04:03,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:04:03,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377908467] [2020-07-20 04:04:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5703d5b1 [2020-07-20 04:04:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:03,269 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-07-20 04:04:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 04:04:03,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377908467] [2020-07-20 04:04:03,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603413119] [2020-07-20 04:04:03,361 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b8f092 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:03,525 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b8f092 issued 2 check-sat command(s) [2020-07-20 04:04:03,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:04:03,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 04:04:03,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:04:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 04:04:03,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:04:03,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-07-20 04:04:03,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502753239] [2020-07-20 04:04:03,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 04:04:03,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:04:03,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 04:04:03,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-20 04:04:03,616 INFO L87 Difference]: Start difference. First operand 124 states and 170 transitions. Second operand 11 states. [2020-07-20 04:04:03,762 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-07-20 04:04:04,219 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-07-20 04:04:04,429 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-07-20 04:04:04,661 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-07-20 04:04:04,810 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-07-20 04:04:06,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:04:06,185 INFO L93 Difference]: Finished difference Result 320 states and 461 transitions. [2020-07-20 04:04:06,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 04:04:06,187 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-07-20 04:04:06,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:04:06,189 INFO L225 Difference]: With dead ends: 320 [2020-07-20 04:04:06,189 INFO L226 Difference]: Without dead ends: 211 [2020-07-20 04:04:06,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-07-20 04:04:06,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-07-20 04:04:06,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 153. [2020-07-20 04:04:06,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-07-20 04:04:06,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 207 transitions. [2020-07-20 04:04:06,213 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 207 transitions. Word has length 57 [2020-07-20 04:04:06,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:04:06,213 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 207 transitions. [2020-07-20 04:04:06,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 04:04:06,213 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 207 transitions. [2020-07-20 04:04:06,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-20 04:04:06,215 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:04:06,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-07-20 04:04:06,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:06,430 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:04:06,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:04:06,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1657015001, now seen corresponding path program 2 times [2020-07-20 04:04:06,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:04:06,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495824896] [2020-07-20 04:04:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5703d5b1 [2020-07-20 04:04:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 04:04:06,705 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 04:04:06,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495824896] [2020-07-20 04:04:06,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73178826] [2020-07-20 04:04:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a05cc55 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:06,971 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a05cc55 issued 3 check-sat command(s) [2020-07-20 04:04:06,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:04:06,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 04:04:06,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:04:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 04:04:07,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 04:04:07,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2020-07-20 04:04:07,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427636248] [2020-07-20 04:04:07,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 04:04:07,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:04:07,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 04:04:07,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-20 04:04:07,030 INFO L87 Difference]: Start difference. First operand 153 states and 207 transitions. Second operand 9 states. [2020-07-20 04:04:07,141 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-07-20 04:04:09,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:04:09,257 INFO L93 Difference]: Finished difference Result 365 states and 521 transitions. [2020-07-20 04:04:09,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 04:04:09,257 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-07-20 04:04:09,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:04:09,260 INFO L225 Difference]: With dead ends: 365 [2020-07-20 04:04:09,261 INFO L226 Difference]: Without dead ends: 232 [2020-07-20 04:04:09,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-20 04:04:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-07-20 04:04:09,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 155. [2020-07-20 04:04:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-20 04:04:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 209 transitions. [2020-07-20 04:04:09,283 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 209 transitions. Word has length 63 [2020-07-20 04:04:09,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:04:09,284 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 209 transitions. [2020-07-20 04:04:09,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 04:04:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 209 transitions. [2020-07-20 04:04:09,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-20 04:04:09,286 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 04:04:09,286 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1] [2020-07-20 04:04:09,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-20 04:04:09,502 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 04:04:09,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 04:04:09,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1182319835, now seen corresponding path program 3 times [2020-07-20 04:04:09,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 04:04:09,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724186845] [2020-07-20 04:04:09,503 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5703d5b1 [2020-07-20 04:04:09,604 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 04:04:09,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706298332] [2020-07-20 04:04:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c8ff494 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:10,571 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c8ff494 issued 4 check-sat command(s) [2020-07-20 04:04:10,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 04:04:10,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 04:04:10,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 04:04:10,597 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 04:04:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-20 04:04:10,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724186845] [2020-07-20 04:04:10,612 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 04:04:10,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706298332] [2020-07-20 04:04:10,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 04:04:10,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 04:04:10,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509475771] [2020-07-20 04:04:10,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 04:04:10,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 04:04:10,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 04:04:10,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 04:04:10,615 INFO L87 Difference]: Start difference. First operand 155 states and 209 transitions. Second operand 5 states. [2020-07-20 04:04:10,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 04:04:10,681 INFO L93 Difference]: Finished difference Result 202 states and 270 transitions. [2020-07-20 04:04:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 04:04:10,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-07-20 04:04:10,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 04:04:10,684 INFO L225 Difference]: With dead ends: 202 [2020-07-20 04:04:10,684 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 04:04:10,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 04:04:10,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 04:04:10,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 04:04:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 04:04:10,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 04:04:10,686 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2020-07-20 04:04:10,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 04:04:10,687 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 04:04:10,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 04:04:10,687 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 04:04:10,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 04:04:10,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 04:04:10,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 04:04:11,960 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 13 [2020-07-20 04:04:12,536 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 13 [2020-07-20 04:04:12,861 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 109 [2020-07-20 04:04:13,237 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 13 [2020-07-20 04:04:13,563 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 14 [2020-07-20 04:04:13,658 INFO L268 CegarLoopResult]: For program point Id_MCDC_100FINAL(lines 418 424) no Hoare annotation was computed. [2020-07-20 04:04:13,658 INFO L268 CegarLoopResult]: For program point Id_MCDC_100EXIT(lines 418 424) no Hoare annotation was computed. [2020-07-20 04:04:13,658 INFO L264 CegarLoopResult]: At program point Id_MCDC_100ENTRY(lines 418 424) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(~Id_MCDC_114~0)| ~Id_MCDC_114~0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-20 04:04:13,658 INFO L264 CegarLoopResult]: At program point L422(line 422) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(~Id_MCDC_114~0)| ~Id_MCDC_114~0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-20 04:04:13,659 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-20 04:04:13,659 INFO L271 CegarLoopResult]: At program point L403(line 403) the Hoare annotation is: true [2020-07-20 04:04:13,659 INFO L268 CegarLoopResult]: For program point L403-1(line 403) no Hoare annotation was computed. [2020-07-20 04:04:13,659 INFO L264 CegarLoopResult]: At program point Id_MCDC_99ENTRY(lines 398 417) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(~Id_MCDC_114~0)| ~Id_MCDC_114~0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-20 04:04:13,659 INFO L268 CegarLoopResult]: For program point Id_MCDC_99EXIT(lines 398 417) no Hoare annotation was computed. [2020-07-20 04:04:13,659 INFO L268 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-07-20 04:04:13,659 INFO L268 CegarLoopResult]: For program point L406-2(lines 406 413) no Hoare annotation was computed. [2020-07-20 04:04:13,660 INFO L268 CegarLoopResult]: For program point L404-2(lines 404 414) no Hoare annotation was computed. [2020-07-20 04:04:13,660 INFO L271 CegarLoopResult]: At program point L404-3(lines 404 414) the Hoare annotation is: true [2020-07-20 04:04:13,660 INFO L271 CegarLoopResult]: At program point L404-4(lines 404 414) the Hoare annotation is: true [2020-07-20 04:04:13,660 INFO L268 CegarLoopResult]: For program point Id_MCDC_99FINAL(lines 398 417) no Hoare annotation was computed. [2020-07-20 04:04:13,660 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-20 04:04:13,660 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-07-20 04:04:13,660 INFO L268 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-07-20 04:04:13,660 INFO L268 CegarLoopResult]: For program point L209-2(line 209) no Hoare annotation was computed. [2020-07-20 04:04:13,661 INFO L271 CegarLoopResult]: At program point Id_MCDC_89ENTRY(lines 191 246) the Hoare annotation is: true [2020-07-20 04:04:13,661 INFO L268 CegarLoopResult]: For program point Id_MCDC_89EXIT(lines 191 246) no Hoare annotation was computed. [2020-07-20 04:04:13,661 INFO L268 CegarLoopResult]: For program point L234(lines 234 239) no Hoare annotation was computed. [2020-07-20 04:04:13,661 INFO L268 CegarLoopResult]: For program point L234-1(lines 232 244) no Hoare annotation was computed. [2020-07-20 04:04:13,661 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-20 04:04:13,661 INFO L268 CegarLoopResult]: For program point L218-2(line 218) no Hoare annotation was computed. [2020-07-20 04:04:13,661 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-07-20 04:04:13,662 INFO L268 CegarLoopResult]: For program point L202(lines 202 205) no Hoare annotation was computed. [2020-07-20 04:04:13,662 INFO L268 CegarLoopResult]: For program point Id_MCDC_89FINAL(lines 191 246) no Hoare annotation was computed. [2020-07-20 04:04:13,662 INFO L268 CegarLoopResult]: For program point L227(lines 227 230) no Hoare annotation was computed. [2020-07-20 04:04:13,662 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-07-20 04:04:13,662 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-07-20 04:04:13,662 INFO L268 CegarLoopResult]: For program point L215-2(line 215) no Hoare annotation was computed. [2020-07-20 04:04:13,662 INFO L271 CegarLoopResult]: At program point L207(lines 207 223) the Hoare annotation is: true [2020-07-20 04:04:13,662 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-07-20 04:04:13,663 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-07-20 04:04:13,663 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-07-20 04:04:13,663 INFO L268 CegarLoopResult]: For program point L232-5(lines 232 244) no Hoare annotation was computed. [2020-07-20 04:04:13,663 INFO L268 CegarLoopResult]: For program point L224-1(lines 224 231) no Hoare annotation was computed. [2020-07-20 04:04:13,663 INFO L271 CegarLoopResult]: At program point L224-3(lines 224 231) the Hoare annotation is: true [2020-07-20 04:04:13,663 INFO L268 CegarLoopResult]: For program point L224-4(lines 224 231) no Hoare annotation was computed. [2020-07-20 04:04:13,663 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-07-20 04:04:13,663 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-20 04:04:13,664 INFO L268 CegarLoopResult]: For program point L212-2(line 212) no Hoare annotation was computed. [2020-07-20 04:04:13,664 INFO L268 CegarLoopResult]: For program point L200(lines 200 206) no Hoare annotation was computed. [2020-07-20 04:04:13,664 INFO L268 CegarLoopResult]: For program point L200-2(lines 200 206) no Hoare annotation was computed. [2020-07-20 04:04:13,664 INFO L268 CegarLoopResult]: For program point L196(lines 196 199) no Hoare annotation was computed. [2020-07-20 04:04:13,664 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 425 456) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(~Id_MCDC_114~0)| ~Id_MCDC_114~0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-20 04:04:13,664 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 425 456) no Hoare annotation was computed. [2020-07-20 04:04:13,664 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 425 456) no Hoare annotation was computed. [2020-07-20 04:04:13,665 INFO L264 CegarLoopResult]: At program point L455(line 455) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(~Id_MCDC_114~0)| ~Id_MCDC_114~0) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-20 04:04:13,665 INFO L268 CegarLoopResult]: For program point L450(lines 450 453) no Hoare annotation was computed. [2020-07-20 04:04:13,665 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 04:04:13,665 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 04:04:13,665 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 04:04:13,665 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 04:04:13,665 INFO L268 CegarLoopResult]: For program point L386-1(line 386) no Hoare annotation was computed. [2020-07-20 04:04:13,665 INFO L268 CegarLoopResult]: For program point L374-2(lines 374 391) no Hoare annotation was computed. [2020-07-20 04:04:13,666 INFO L271 CegarLoopResult]: At program point L374-3(lines 374 391) the Hoare annotation is: true [2020-07-20 04:04:13,666 INFO L268 CegarLoopResult]: For program point L374-4(lines 374 391) no Hoare annotation was computed. [2020-07-20 04:04:13,666 INFO L264 CegarLoopResult]: At program point Id_MCDC_97ENTRY(lines 329 397) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-20 04:04:13,666 INFO L268 CegarLoopResult]: For program point Id_MCDC_97EXIT(lines 329 397) no Hoare annotation was computed. [2020-07-20 04:04:13,666 INFO L268 CegarLoopResult]: For program point L387(lines 387 390) no Hoare annotation was computed. [2020-07-20 04:04:13,666 INFO L268 CegarLoopResult]: For program point L354(lines 354 395) no Hoare annotation was computed. [2020-07-20 04:04:13,666 INFO L268 CegarLoopResult]: For program point L350-2(lines 350 353) no Hoare annotation was computed. [2020-07-20 04:04:13,667 INFO L264 CegarLoopResult]: At program point L350-3(lines 350 353) the Hoare annotation is: (= 6144 Id_MCDC_97_~Id_MCDC_123~0) [2020-07-20 04:04:13,667 INFO L268 CegarLoopResult]: For program point L350-4(lines 330 397) no Hoare annotation was computed. [2020-07-20 04:04:13,667 INFO L271 CegarLoopResult]: At program point L363(line 363) the Hoare annotation is: true [2020-07-20 04:04:13,667 INFO L268 CegarLoopResult]: For program point L363-1(lines 363 366) no Hoare annotation was computed. [2020-07-20 04:04:13,667 INFO L268 CegarLoopResult]: For program point Id_MCDC_97FINAL(lines 329 397) no Hoare annotation was computed. [2020-07-20 04:04:13,667 INFO L271 CegarLoopResult]: At program point L359(line 359) the Hoare annotation is: true [2020-07-20 04:04:13,667 INFO L268 CegarLoopResult]: For program point L359-1(lines 359 362) no Hoare annotation was computed. [2020-07-20 04:04:13,667 INFO L271 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: true [2020-07-20 04:04:13,668 INFO L268 CegarLoopResult]: For program point L376-1(lines 376 379) no Hoare annotation was computed. [2020-07-20 04:04:13,668 INFO L268 CegarLoopResult]: For program point L356-2(lines 356 394) no Hoare annotation was computed. [2020-07-20 04:04:13,668 INFO L271 CegarLoopResult]: At program point L356-3(lines 356 394) the Hoare annotation is: true [2020-07-20 04:04:13,668 INFO L271 CegarLoopResult]: At program point L369(line 369) the Hoare annotation is: true [2020-07-20 04:04:13,668 INFO L268 CegarLoopResult]: For program point L369-1(lines 369 372) no Hoare annotation was computed. [2020-07-20 04:04:13,668 INFO L271 CegarLoopResult]: At program point L386(line 386) the Hoare annotation is: true [2020-07-20 04:04:13,668 INFO L271 CegarLoopResult]: At program point Id_MCDC_95ENTRY(lines 278 297) the Hoare annotation is: true [2020-07-20 04:04:13,668 INFO L268 CegarLoopResult]: For program point Id_MCDC_95EXIT(lines 278 297) no Hoare annotation was computed. [2020-07-20 04:04:13,669 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-07-20 04:04:13,669 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (and (or (= 3 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 3))) (or (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4)) (= 4 Id_MCDC_95_~Id_MCDC_93))) [2020-07-20 04:04:13,669 INFO L264 CegarLoopResult]: At program point L296-2(line 296) the Hoare annotation is: (and |Id_MCDC_95_#t~short23| (or (= 4 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4))) (or (= 3 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 3)))) [2020-07-20 04:04:13,669 INFO L268 CegarLoopResult]: For program point L294-1(line 294) no Hoare annotation was computed. [2020-07-20 04:04:13,669 INFO L268 CegarLoopResult]: For program point L296-3(line 296) no Hoare annotation was computed. [2020-07-20 04:04:13,669 INFO L264 CegarLoopResult]: At program point L288(line 288) the Hoare annotation is: (and (or (= 3 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 3))) (or (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4)) (= 4 Id_MCDC_95_~Id_MCDC_93))) [2020-07-20 04:04:13,670 INFO L268 CegarLoopResult]: For program point L288-1(line 288) no Hoare annotation was computed. [2020-07-20 04:04:13,670 INFO L268 CegarLoopResult]: For program point L286(lines 286 293) no Hoare annotation was computed. [2020-07-20 04:04:13,670 INFO L268 CegarLoopResult]: For program point L286-2(lines 286 293) no Hoare annotation was computed. [2020-07-20 04:04:13,670 INFO L268 CegarLoopResult]: For program point L282(lines 282 285) no Hoare annotation was computed. [2020-07-20 04:04:13,670 INFO L264 CegarLoopResult]: At program point L295(line 295) the Hoare annotation is: (and (or (= 3 Id_MCDC_95_~Id_MCDC_93) (not (= |Id_MCDC_95_#in~Id_MCDC_93| 3))) (or (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4)) (= 4 Id_MCDC_95_~Id_MCDC_93))) [2020-07-20 04:04:13,670 INFO L268 CegarLoopResult]: For program point L295-1(line 295) no Hoare annotation was computed. [2020-07-20 04:04:13,670 INFO L268 CegarLoopResult]: For program point Id_MCDC_95FINAL(lines 278 297) no Hoare annotation was computed. [2020-07-20 04:04:13,671 INFO L268 CegarLoopResult]: For program point L316(lines 316 321) no Hoare annotation was computed. [2020-07-20 04:04:13,671 INFO L268 CegarLoopResult]: For program point L316-1(lines 314 326) no Hoare annotation was computed. [2020-07-20 04:04:13,671 INFO L268 CegarLoopResult]: For program point L314(line 314) no Hoare annotation was computed. [2020-07-20 04:04:13,671 INFO L268 CegarLoopResult]: For program point L314-2(line 314) no Hoare annotation was computed. [2020-07-20 04:04:13,671 INFO L268 CegarLoopResult]: For program point L314-3(line 314) no Hoare annotation was computed. [2020-07-20 04:04:13,671 INFO L268 CegarLoopResult]: For program point L314-5(lines 314 326) no Hoare annotation was computed. [2020-07-20 04:04:13,671 INFO L268 CegarLoopResult]: For program point L306-1(lines 306 313) no Hoare annotation was computed. [2020-07-20 04:04:13,671 INFO L271 CegarLoopResult]: At program point L306-3(lines 306 313) the Hoare annotation is: true [2020-07-20 04:04:13,671 INFO L268 CegarLoopResult]: For program point L302(lines 302 305) no Hoare annotation was computed. [2020-07-20 04:04:13,672 INFO L268 CegarLoopResult]: For program point L306-4(lines 306 313) no Hoare annotation was computed. [2020-07-20 04:04:13,672 INFO L268 CegarLoopResult]: For program point Id_MCDC_96FINAL(lines 298 328) no Hoare annotation was computed. [2020-07-20 04:04:13,672 INFO L268 CegarLoopResult]: For program point L309(lines 309 312) no Hoare annotation was computed. [2020-07-20 04:04:13,672 INFO L271 CegarLoopResult]: At program point Id_MCDC_96ENTRY(lines 298 328) the Hoare annotation is: true [2020-07-20 04:04:13,672 INFO L268 CegarLoopResult]: For program point Id_MCDC_96EXIT(lines 298 328) no Hoare annotation was computed. [2020-07-20 04:04:13,672 INFO L268 CegarLoopResult]: For program point L253(lines 253 267) no Hoare annotation was computed. [2020-07-20 04:04:13,672 INFO L271 CegarLoopResult]: At program point Id_MCDC_92ENTRY(lines 247 277) the Hoare annotation is: true [2020-07-20 04:04:13,672 INFO L268 CegarLoopResult]: For program point Id_MCDC_92EXIT(lines 247 277) no Hoare annotation was computed. [2020-07-20 04:04:13,673 INFO L268 CegarLoopResult]: For program point Id_MCDC_92FINAL(lines 247 277) no Hoare annotation was computed. [2020-07-20 04:04:13,673 INFO L271 CegarLoopResult]: At program point L270(line 270) the Hoare annotation is: true [2020-07-20 04:04:13,673 INFO L268 CegarLoopResult]: For program point L270-1(line 270) no Hoare annotation was computed. [2020-07-20 04:04:13,673 INFO L268 CegarLoopResult]: For program point L268-1(lines 248 277) no Hoare annotation was computed. [2020-07-20 04:04:13,673 INFO L268 CegarLoopResult]: For program point L268-2(lines 268 275) no Hoare annotation was computed. [2020-07-20 04:04:13,673 INFO L268 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-07-20 04:04:13,673 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 04:04:13,674 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~Id_MCDC_111~0.base |old(~Id_MCDC_111~0.base)|) (= |#t~string14.base| |old(#t~string14.base)|) (= |old(#t~string38.offset)| |#t~string38.offset|) (= |old(~Id_MCDC_105~0)| ~Id_MCDC_105~0) (= |old(#t~string65.base)| |#t~string65.base|) (= |old(~Id_MCDC_109~0.base)| ~Id_MCDC_109~0.base) (= |#t~string9.offset| |old(#t~string9.offset)|) (= |old(~#Id_MCDC_113~0.offset)| |~#Id_MCDC_113~0.offset|) (= |#t~string14.offset| |old(#t~string14.offset)|) (= |old(~Id_MCDC_114~0)| ~Id_MCDC_114~0) (= |old(#t~string33.base)| |#t~string33.base|) (= |old(#t~string38.base)| |#t~string38.base|) (= ~Id_MCDC_107~0.offset |old(~Id_MCDC_107~0.offset)|) (= |old(~Id_MCDC_110~0.base)| ~Id_MCDC_110~0.base) (= |old(#t~string66.offset)| |#t~string66.offset|) (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string65.offset| |old(#t~string65.offset)|) (= ~Id_MCDC_107~0.base |old(~Id_MCDC_107~0.base)|) (= |old(#length)| |#length|) (= ~Id_MCDC_109~0.offset |old(~Id_MCDC_109~0.offset)|) (= |old(~#Id_MCDC_112~0.offset)| |~#Id_MCDC_112~0.offset|) (= |old(~Id_MCDC_106~0)| ~Id_MCDC_106~0) (= |old(~Id_MCDC_108~0.offset)| ~Id_MCDC_108~0.offset) (= |old(#t~string66.base)| |#t~string66.base|) (= |old(#t~string20.offset)| |#t~string20.offset|) (= |~#Id_MCDC_112~0.base| |old(~#Id_MCDC_112~0.base)|) (= |old(~Id_MCDC_111~0.offset)| ~Id_MCDC_111~0.offset) (= |old(#t~string20.base)| |#t~string20.base|) (= |#t~string9.base| |old(#t~string9.base)|) (= |#valid| |old(#valid)|) (= |old(~Id_MCDC_104~0)| ~Id_MCDC_104~0) (= ~Id_MCDC_108~0.base |old(~Id_MCDC_108~0.base)|) (= |old(#t~string33.offset)| |#t~string33.offset|) (= ~Id_MCDC_110~0.offset |old(~Id_MCDC_110~0.offset)|) (= |old(~#Id_MCDC_113~0.base)| |~#Id_MCDC_113~0.base|)) [2020-07-20 04:04:13,674 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 04:04:13,674 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 04:04:13,674 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 04:04:13,674 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 04:04:13,674 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 04:04:13,674 INFO L268 CegarLoopResult]: For program point avoid_zeroEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-20 04:04:13,675 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-20 04:04:13,675 INFO L268 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-07-20 04:04:13,675 INFO L271 CegarLoopResult]: At program point avoid_zeroENTRY(lines 7 13) the Hoare annotation is: true [2020-07-20 04:04:13,675 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 457 464) the Hoare annotation is: true [2020-07-20 04:04:13,675 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 04:04:13,675 INFO L268 CegarLoopResult]: For program point L459(lines 459 462) no Hoare annotation was computed. [2020-07-20 04:04:13,675 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 457 464) no Hoare annotation was computed. [2020-07-20 04:04:13,675 INFO L268 CegarLoopResult]: For program point L459-2(lines 457 464) no Hoare annotation was computed. [2020-07-20 04:04:13,676 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-07-20 04:04:13,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:04:13 BoogieIcfgContainer [2020-07-20 04:04:13,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 04:04:13,696 INFO L168 Benchmark]: Toolchain (without parser) took 20176.86 ms. Allocated memory was 138.4 MB in the beginning and 439.9 MB in the end (delta: 301.5 MB). Free memory was 100.2 MB in the beginning and 148.8 MB in the end (delta: -48.6 MB). Peak memory consumption was 276.6 MB. Max. memory is 7.1 GB. [2020-07-20 04:04:13,697 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 04:04:13,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.56 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 171.9 MB in the end (delta: -72.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-07-20 04:04:13,699 INFO L168 Benchmark]: Boogie Preprocessor took 91.35 ms. Allocated memory is still 202.4 MB. Free memory was 171.9 MB in the beginning and 168.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-07-20 04:04:13,700 INFO L168 Benchmark]: RCFGBuilder took 1057.88 ms. Allocated memory is still 202.4 MB. Free memory was 168.1 MB in the beginning and 105.1 MB in the end (delta: 63.0 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. [2020-07-20 04:04:13,700 INFO L168 Benchmark]: TraceAbstraction took 18459.96 ms. Allocated memory was 202.4 MB in the beginning and 439.9 MB in the end (delta: 237.5 MB). Free memory was 105.1 MB in the beginning and 148.8 MB in the end (delta: -43.7 MB). Peak memory consumption was 217.6 MB. Max. memory is 7.1 GB. [2020-07-20 04:04:13,704 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 561.56 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 171.9 MB in the end (delta: -72.2 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.35 ms. Allocated memory is still 202.4 MB. Free memory was 171.9 MB in the beginning and 168.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1057.88 ms. Allocated memory is still 202.4 MB. Free memory was 168.1 MB in the beginning and 105.1 MB in the end (delta: 63.0 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18459.96 ms. Allocated memory was 202.4 MB in the beginning and 439.9 MB in the end (delta: 237.5 MB). Free memory was 105.1 MB in the beginning and 148.8 MB in the end (delta: -43.7 MB). Peak memory consumption was 217.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 461]: 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 - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 224]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 404]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 374]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 350]: Loop Invariant Derived loop invariant: 6144 == Id_MCDC_123 - InvariantResult [Line: 306]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 356]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.6s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1249 SDtfs, 1091 SDslu, 2344 SDs, 0 SdLazy, 3000 SolverSat, 259 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 421 GetRequests, 372 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 220 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 244 PreInvPairs, 273 NumberOfFragments, 314 HoareAnnotationTreeSize, 244 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 34 FomulaSimplificationsInter, 3474 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 644 NumberOfCodeBlocks, 530 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 632 ConstructedInterpolants, 0 QuantifiedInterpolants, 82661 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2711 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 73/108 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...