/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 BIGGEST_EQUIVALENCE_CLASS --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 06:11:50,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:11:50,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:11:50,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:11:50,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:11:50,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:11:50,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:11:50,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:11:50,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:11:50,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:11:50,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:11:50,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:11:50,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:11:50,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:11:50,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:11:50,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:11:50,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:11:50,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:11:50,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:11:50,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:11:50,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:11:50,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:11:50,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:11:50,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:11:50,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 06:11:50,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 06:11:50,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 06:11:50,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 06:11:50,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 06:11:50,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-20 06:11:50,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:11:50,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:11:50,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:11:50,656 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 06:11:50,671 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:11:50,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:11:50,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:11:50,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:11:50,673 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:11:50,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:11:50,674 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:11:50,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:11:50,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:11:50,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:11:50,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:11:50,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:11:50,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:11:50,675 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:11:50,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:11:50,675 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:11:50,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:11:50,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:11:50,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:11:50,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:11:50,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:11:50,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:11:50,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:11:50,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:11:50,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:11:50,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:11:50,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:11:50,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:11:50,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:11:50,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 06:11:50,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:11:50,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:11:50,979 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:11:50,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:11:50,981 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:11:50,981 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-07-20 06:11:51,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636a35b80/492b48aaa0e1436a8342e176eafda909/FLAG8c8091f50 [2020-07-20 06:11:51,609 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:11:51,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/ofuf_5.c [2020-07-20 06:11:51,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636a35b80/492b48aaa0e1436a8342e176eafda909/FLAG8c8091f50 [2020-07-20 06:11:51,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/636a35b80/492b48aaa0e1436a8342e176eafda909 [2020-07-20 06:11:51,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:11:51,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:11:51,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:11:51,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:11:51,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:11:51,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:11:51" (1/1) ... [2020-07-20 06:11:51,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426818b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:51, skipping insertion in model container [2020-07-20 06:11:51,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:11:51" (1/1) ... [2020-07-20 06:11:51,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:11:52,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:11:52,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:11:52,410 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:11:52,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:11:52,540 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:11:52,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:52 WrapperNode [2020-07-20 06:11:52,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:11:52,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:11:52,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:11:52,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:11:52,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:52" (1/1) ... [2020-07-20 06:11:52,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:52" (1/1) ... [2020-07-20 06:11:52,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:52" (1/1) ... [2020-07-20 06:11:52,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:52" (1/1) ... [2020-07-20 06:11:52,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:52" (1/1) ... [2020-07-20 06:11:52,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:52" (1/1) ... [2020-07-20 06:11:52,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:52" (1/1) ... [2020-07-20 06:11:52,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:11:52,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:11:52,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:11:52,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:11:52,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:52" (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 06:11:52,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:11:52,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:11:52,712 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:11:52,712 INFO L138 BoogieDeclarations]: Found implementation of procedure avoid_zero [2020-07-20 06:11:52,712 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_89 [2020-07-20 06:11:52,712 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_92 [2020-07-20 06:11:52,713 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_95 [2020-07-20 06:11:52,713 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_96 [2020-07-20 06:11:52,713 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_97 [2020-07-20 06:11:52,713 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_99 [2020-07-20 06:11:52,713 INFO L138 BoogieDeclarations]: Found implementation of procedure Id_MCDC_100 [2020-07-20 06:11:52,713 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:11:52,713 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 06:11:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:11:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:11:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:11:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure avoid_zero [2020-07-20 06:11:52,714 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-07-20 06:11:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-07-20 06:11:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_92 [2020-07-20 06:11:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_95 [2020-07-20 06:11:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_96 [2020-07-20 06:11:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_97 [2020-07-20 06:11:52,715 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 06:11:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_99 [2020-07-20 06:11:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_100 [2020-07-20 06:11:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-20 06:11:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:11:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:11:52,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 06:11:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 06:11:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 06:11:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 06:11:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 06:11:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 06:11:52,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 06:11:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 06:11:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:11:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 06:11:52,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:11:55,181 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:11:55,182 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-20 06:11:55,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:11:55 BoogieIcfgContainer [2020-07-20 06:11:55,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:11:55,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:11:55,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:11:55,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:11:55,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:11:51" (1/3) ... [2020-07-20 06:11:55,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2f134b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:11:55, skipping insertion in model container [2020-07-20 06:11:55,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:11:52" (2/3) ... [2020-07-20 06:11:55,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2f134b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:11:55, skipping insertion in model container [2020-07-20 06:11:55,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:11:55" (3/3) ... [2020-07-20 06:11:55,197 INFO L109 eAbstractionObserver]: Analyzing ICFG ofuf_5.c [2020-07-20 06:11:55,209 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:11:55,218 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:11:55,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:11:55,261 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:11:55,261 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:11:55,261 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:11:55,262 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:11:55,262 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:11:55,262 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:11:55,263 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:11:55,263 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:11:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-07-20 06:11:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-20 06:11:55,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:11:55,299 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 06:11:55,300 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:11:55,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:11:55,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1328586124, now seen corresponding path program 1 times [2020-07-20 06:11:55,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:11:55,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469883310] [2020-07-20 06:11:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ffa148d [2020-07-20 06:11:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:11:55,807 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-07-20 06:11:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:11:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:11:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:11:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:11:55,948 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 06:11:55,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469883310] [2020-07-20 06:11:55,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:11:55,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:11:55,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591070654] [2020-07-20 06:11:55,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:11:55,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:11:55,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:11:55,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:11:55,977 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 5 states. [2020-07-20 06:11:56,143 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-07-20 06:11:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:11:57,169 INFO L93 Difference]: Finished difference Result 266 states and 409 transitions. [2020-07-20 06:11:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:11:57,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-07-20 06:11:57,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:11:57,184 INFO L225 Difference]: With dead ends: 266 [2020-07-20 06:11:57,184 INFO L226 Difference]: Without dead ends: 141 [2020-07-20 06:11:57,190 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 06:11:57,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-20 06:11:57,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2020-07-20 06:11:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-20 06:11:57,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 168 transitions. [2020-07-20 06:11:57,260 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 168 transitions. Word has length 43 [2020-07-20 06:11:57,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:11:57,260 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 168 transitions. [2020-07-20 06:11:57,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:11:57,261 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 168 transitions. [2020-07-20 06:11:57,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 06:11:57,265 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:11:57,265 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 06:11:57,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:11:57,266 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:11:57,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:11:57,266 INFO L82 PathProgramCache]: Analyzing trace with hash -294008176, now seen corresponding path program 1 times [2020-07-20 06:11:57,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:11:57,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445458399] [2020-07-20 06:11:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ffa148d [2020-07-20 06:11:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:11:57,486 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-07-20 06:11:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:11:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:11:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:11:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:11:57,636 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 06:11:57,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445458399] [2020-07-20 06:11:57,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373823068] [2020-07-20 06:11:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d074fc No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:11:57,807 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2d074fc issued 2 check-sat command(s) [2020-07-20 06:11:57,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:11:57,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 06:11:57,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:11:57,848 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 06:11:57,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:11:57,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2020-07-20 06:11:57,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283311218] [2020-07-20 06:11:57,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 06:11:57,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:11:57,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 06:11:57,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:11:57,852 INFO L87 Difference]: Start difference. First operand 121 states and 168 transitions. Second operand 7 states. [2020-07-20 06:11:57,984 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-07-20 06:11:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:11:59,840 INFO L93 Difference]: Finished difference Result 267 states and 385 transitions. [2020-07-20 06:11:59,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:11:59,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-07-20 06:11:59,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:11:59,848 INFO L225 Difference]: With dead ends: 267 [2020-07-20 06:11:59,848 INFO L226 Difference]: Without dead ends: 162 [2020-07-20 06:11:59,854 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 06:11:59,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-20 06:11:59,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 123. [2020-07-20 06:11:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-20 06:11:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 170 transitions. [2020-07-20 06:11:59,887 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 170 transitions. Word has length 45 [2020-07-20 06:11:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:11:59,887 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 170 transitions. [2020-07-20 06:11:59,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 06:11:59,888 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 170 transitions. [2020-07-20 06:11:59,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 06:11:59,890 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:11:59,890 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 06:12:00,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 06:12:00,104 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:12:00,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:12:00,105 INFO L82 PathProgramCache]: Analyzing trace with hash 677722022, now seen corresponding path program 1 times [2020-07-20 06:12:00,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:12:00,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211923022] [2020-07-20 06:12:00,107 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ffa148d [2020-07-20 06:12:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 06:12:00,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211923022] [2020-07-20 06:12:00,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460503756] [2020-07-20 06:12:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10f26d20 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 06:12:00,630 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@10f26d20 issued 2 check-sat command(s) [2020-07-20 06:12:00,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:12:00,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 06:12:00,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:12:00,658 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 06:12:00,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:12:00,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-07-20 06:12:00,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136660631] [2020-07-20 06:12:00,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 06:12:00,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:12:00,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 06:12:00,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 06:12:00,661 INFO L87 Difference]: Start difference. First operand 123 states and 170 transitions. Second operand 3 states. [2020-07-20 06:12:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:12:00,692 INFO L93 Difference]: Finished difference Result 174 states and 236 transitions. [2020-07-20 06:12:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 06:12:00,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-20 06:12:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:12:00,694 INFO L225 Difference]: With dead ends: 174 [2020-07-20 06:12:00,695 INFO L226 Difference]: Without dead ends: 131 [2020-07-20 06:12:00,695 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 06:12:00,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-20 06:12:00,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2020-07-20 06:12:00,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-07-20 06:12:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2020-07-20 06:12:00,715 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 51 [2020-07-20 06:12:00,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:12:00,715 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2020-07-20 06:12:00,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 06:12:00,715 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2020-07-20 06:12:00,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 06:12:00,717 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:12:00,718 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 06:12:00,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:12:00,931 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:12:00,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:12:00,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1725617515, now seen corresponding path program 1 times [2020-07-20 06:12:00,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:12:00,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137419322] [2020-07-20 06:12:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ffa148d [2020-07-20 06:12:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:01,198 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 06:12:01,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137419322] [2020-07-20 06:12:01,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905958395] [2020-07-20 06:12:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4957873f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:12:01,354 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4957873f issued 2 check-sat command(s) [2020-07-20 06:12:01,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:12:01,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 06:12:01,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:12:01,382 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 06:12:01,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:12:01,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-07-20 06:12:01,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571516020] [2020-07-20 06:12:01,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 06:12:01,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:12:01,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 06:12:01,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 06:12:01,384 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand 3 states. [2020-07-20 06:12:01,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:12:01,421 INFO L93 Difference]: Finished difference Result 184 states and 252 transitions. [2020-07-20 06:12:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 06:12:01,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 06:12:01,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:12:01,424 INFO L225 Difference]: With dead ends: 184 [2020-07-20 06:12:01,424 INFO L226 Difference]: Without dead ends: 141 [2020-07-20 06:12:01,425 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 06:12:01,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-07-20 06:12:01,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 124. [2020-07-20 06:12:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-07-20 06:12:01,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 170 transitions. [2020-07-20 06:12:01,443 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 170 transitions. Word has length 52 [2020-07-20 06:12:01,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:12:01,444 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 170 transitions. [2020-07-20 06:12:01,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 06:12:01,444 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 170 transitions. [2020-07-20 06:12:01,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 06:12:01,446 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:12:01,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:12:01,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:12:01,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:12:01,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:12:01,662 INFO L82 PathProgramCache]: Analyzing trace with hash -2080054737, now seen corresponding path program 1 times [2020-07-20 06:12:01,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:12:01,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60817468] [2020-07-20 06:12:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ffa148d [2020-07-20 06:12:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:01,832 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-07-20 06:12:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:12:01,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60817468] [2020-07-20 06:12:01,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714505376] [2020-07-20 06:12:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3e59ba05 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 06:12:02,136 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3e59ba05 issued 2 check-sat command(s) [2020-07-20 06:12:02,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:12:02,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 06:12:02,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:12:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 06:12:02,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:12:02,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2020-07-20 06:12:02,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646642925] [2020-07-20 06:12:02,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:12:02,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:12:02,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:12:02,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-20 06:12:02,183 INFO L87 Difference]: Start difference. First operand 124 states and 170 transitions. Second operand 4 states. [2020-07-20 06:12:02,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:12:02,246 INFO L93 Difference]: Finished difference Result 168 states and 224 transitions. [2020-07-20 06:12:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:12:02,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-07-20 06:12:02,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:12:02,249 INFO L225 Difference]: With dead ends: 168 [2020-07-20 06:12:02,249 INFO L226 Difference]: Without dead ends: 136 [2020-07-20 06:12:02,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-20 06:12:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-20 06:12:02,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-07-20 06:12:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-07-20 06:12:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 186 transitions. [2020-07-20 06:12:02,269 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 186 transitions. Word has length 53 [2020-07-20 06:12:02,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:12:02,269 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 186 transitions. [2020-07-20 06:12:02,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:12:02,270 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 186 transitions. [2020-07-20 06:12:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-20 06:12:02,271 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:12:02,271 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-07-20 06:12:02,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:12:02,486 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:12:02,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:12:02,487 INFO L82 PathProgramCache]: Analyzing trace with hash -326846377, now seen corresponding path program 1 times [2020-07-20 06:12:02,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:12:02,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743973335] [2020-07-20 06:12:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ffa148d [2020-07-20 06:12:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 06:12:02,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743973335] [2020-07-20 06:12:02,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13270139] [2020-07-20 06:12:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@423e61c9 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:12:02,985 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@423e61c9 issued 3 check-sat command(s) [2020-07-20 06:12:02,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:12:02,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 06:12:02,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:12:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 06:12:03,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:12:03,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2020-07-20 06:12:03,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796777724] [2020-07-20 06:12:03,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 06:12:03,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:12:03,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 06:12:03,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-20 06:12:03,121 INFO L87 Difference]: Start difference. First operand 136 states and 186 transitions. Second operand 8 states. [2020-07-20 06:12:04,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:12:04,561 INFO L93 Difference]: Finished difference Result 314 states and 450 transitions. [2020-07-20 06:12:04,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:12:04,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-07-20 06:12:04,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:12:04,564 INFO L225 Difference]: With dead ends: 314 [2020-07-20 06:12:04,564 INFO L226 Difference]: Without dead ends: 196 [2020-07-20 06:12:04,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-20 06:12:04,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-20 06:12:04,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 138. [2020-07-20 06:12:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-20 06:12:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 188 transitions. [2020-07-20 06:12:04,584 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 188 transitions. Word has length 61 [2020-07-20 06:12:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:12:04,585 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 188 transitions. [2020-07-20 06:12:04,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 06:12:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 188 transitions. [2020-07-20 06:12:04,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-20 06:12:04,587 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:12:04,587 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 06:12:04,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-20 06:12:04,802 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:12:04,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:12:04,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1657015001, now seen corresponding path program 2 times [2020-07-20 06:12:04,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:12:04,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014636598] [2020-07-20 06:12:04,804 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ffa148d [2020-07-20 06:12:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:12:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 06:12:05,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014636598] [2020-07-20 06:12:05,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711447910] [2020-07-20 06:12:05,063 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b62655f 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 06:12:05,334 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b62655f issued 3 check-sat command(s) [2020-07-20 06:12:05,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:12:05,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 06:12:05,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:12:05,382 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 06:12:05,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:12:05,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2020-07-20 06:12:05,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290924730] [2020-07-20 06:12:05,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 06:12:05,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:12:05,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 06:12:05,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-20 06:12:05,385 INFO L87 Difference]: Start difference. First operand 138 states and 188 transitions. Second operand 9 states. [2020-07-20 06:12:07,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:12:07,518 INFO L93 Difference]: Finished difference Result 335 states and 483 transitions. [2020-07-20 06:12:07,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 06:12:07,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-07-20 06:12:07,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:12:07,522 INFO L225 Difference]: With dead ends: 335 [2020-07-20 06:12:07,522 INFO L226 Difference]: Without dead ends: 217 [2020-07-20 06:12:07,523 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 06:12:07,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-20 06:12:07,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 140. [2020-07-20 06:12:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-20 06:12:07,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2020-07-20 06:12:07,541 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 63 [2020-07-20 06:12:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:12:07,541 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2020-07-20 06:12:07,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 06:12:07,541 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2020-07-20 06:12:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-20 06:12:07,543 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:12:07,543 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 06:12:07,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:12:07,754 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:12:07,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:12:07,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1182319835, now seen corresponding path program 3 times [2020-07-20 06:12:07,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:12:07,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322612057] [2020-07-20 06:12:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@ffa148d [2020-07-20 06:12:07,798 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:12:07,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133138544] [2020-07-20 06:12:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20d1c804 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:12:08,916 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20d1c804 issued 4 check-sat command(s) [2020-07-20 06:12:08,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:12:08,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 06:12:08,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:12:08,952 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 06:12:08,971 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 06:12:08,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322612057] [2020-07-20 06:12:08,971 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:12:08,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133138544] [2020-07-20 06:12:08,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:12:08,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:12:08,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952883690] [2020-07-20 06:12:08,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:12:08,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:12:08,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:12:08,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:12:08,974 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand 5 states. [2020-07-20 06:12:09,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:12:09,040 INFO L93 Difference]: Finished difference Result 176 states and 236 transitions. [2020-07-20 06:12:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:12:09,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-07-20 06:12:09,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:12:09,045 INFO L225 Difference]: With dead ends: 176 [2020-07-20 06:12:09,045 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 06:12:09,047 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 06:12:09,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 06:12:09,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 06:12:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 06:12:09,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 06:12:09,048 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2020-07-20 06:12:09,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:12:09,049 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 06:12:09,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:12:09,049 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 06:12:09,049 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 06:12:09,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:12:09,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 06:12:10,234 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 7 [2020-07-20 06:12:10,782 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 7 [2020-07-20 06:12:11,061 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 109 [2020-07-20 06:12:11,384 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 7 [2020-07-20 06:12:11,630 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 9 [2020-07-20 06:12:11,730 INFO L268 CegarLoopResult]: For program point Id_MCDC_100FINAL(lines 418 424) no Hoare annotation was computed. [2020-07-20 06:12:11,730 INFO L268 CegarLoopResult]: For program point Id_MCDC_100EXIT(lines 418 424) no Hoare annotation was computed. [2020-07-20 06:12:11,730 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 06:12:11,731 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 06:12:11,731 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-20 06:12:11,731 INFO L271 CegarLoopResult]: At program point L403(line 403) the Hoare annotation is: true [2020-07-20 06:12:11,731 INFO L268 CegarLoopResult]: For program point L403-1(line 403) no Hoare annotation was computed. [2020-07-20 06:12:11,731 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 06:12:11,731 INFO L268 CegarLoopResult]: For program point Id_MCDC_99EXIT(lines 398 417) no Hoare annotation was computed. [2020-07-20 06:12:11,732 INFO L268 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-07-20 06:12:11,732 INFO L268 CegarLoopResult]: For program point L406-2(lines 406 413) no Hoare annotation was computed. [2020-07-20 06:12:11,732 INFO L268 CegarLoopResult]: For program point L404-2(lines 404 414) no Hoare annotation was computed. [2020-07-20 06:12:11,732 INFO L271 CegarLoopResult]: At program point L404-3(lines 404 414) the Hoare annotation is: true [2020-07-20 06:12:11,732 INFO L271 CegarLoopResult]: At program point L404-4(lines 404 414) the Hoare annotation is: true [2020-07-20 06:12:11,732 INFO L268 CegarLoopResult]: For program point Id_MCDC_99FINAL(lines 398 417) no Hoare annotation was computed. [2020-07-20 06:12:11,733 INFO L268 CegarLoopResult]: For program point L221(line 221) no Hoare annotation was computed. [2020-07-20 06:12:11,733 INFO L268 CegarLoopResult]: For program point L213(line 213) no Hoare annotation was computed. [2020-07-20 06:12:11,733 INFO L268 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-07-20 06:12:11,733 INFO L268 CegarLoopResult]: For program point L209-2(line 209) no Hoare annotation was computed. [2020-07-20 06:12:11,733 INFO L271 CegarLoopResult]: At program point Id_MCDC_89ENTRY(lines 191 246) the Hoare annotation is: true [2020-07-20 06:12:11,733 INFO L268 CegarLoopResult]: For program point Id_MCDC_89EXIT(lines 191 246) no Hoare annotation was computed. [2020-07-20 06:12:11,733 INFO L268 CegarLoopResult]: For program point L234(lines 234 239) no Hoare annotation was computed. [2020-07-20 06:12:11,733 INFO L268 CegarLoopResult]: For program point L234-1(lines 232 244) no Hoare annotation was computed. [2020-07-20 06:12:11,733 INFO L268 CegarLoopResult]: For program point L218(line 218) no Hoare annotation was computed. [2020-07-20 06:12:11,734 INFO L268 CegarLoopResult]: For program point L218-2(line 218) no Hoare annotation was computed. [2020-07-20 06:12:11,734 INFO L268 CegarLoopResult]: For program point L210(line 210) no Hoare annotation was computed. [2020-07-20 06:12:11,734 INFO L268 CegarLoopResult]: For program point L202(lines 202 205) no Hoare annotation was computed. [2020-07-20 06:12:11,734 INFO L268 CegarLoopResult]: For program point Id_MCDC_89FINAL(lines 191 246) no Hoare annotation was computed. [2020-07-20 06:12:11,734 INFO L268 CegarLoopResult]: For program point L227(lines 227 230) no Hoare annotation was computed. [2020-07-20 06:12:11,734 INFO L268 CegarLoopResult]: For program point L219(line 219) no Hoare annotation was computed. [2020-07-20 06:12:11,734 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-07-20 06:12:11,734 INFO L268 CegarLoopResult]: For program point L215-2(line 215) no Hoare annotation was computed. [2020-07-20 06:12:11,734 INFO L271 CegarLoopResult]: At program point L207(lines 207 223) the Hoare annotation is: true [2020-07-20 06:12:11,734 INFO L268 CegarLoopResult]: For program point L232(line 232) no Hoare annotation was computed. [2020-07-20 06:12:11,734 INFO L268 CegarLoopResult]: For program point L232-2(line 232) no Hoare annotation was computed. [2020-07-20 06:12:11,735 INFO L268 CegarLoopResult]: For program point L232-3(line 232) no Hoare annotation was computed. [2020-07-20 06:12:11,735 INFO L268 CegarLoopResult]: For program point L232-5(lines 232 244) no Hoare annotation was computed. [2020-07-20 06:12:11,735 INFO L268 CegarLoopResult]: For program point L224-1(lines 224 231) no Hoare annotation was computed. [2020-07-20 06:12:11,735 INFO L271 CegarLoopResult]: At program point L224-3(lines 224 231) the Hoare annotation is: true [2020-07-20 06:12:11,735 INFO L268 CegarLoopResult]: For program point L224-4(lines 224 231) no Hoare annotation was computed. [2020-07-20 06:12:11,735 INFO L268 CegarLoopResult]: For program point L216(line 216) no Hoare annotation was computed. [2020-07-20 06:12:11,735 INFO L268 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-07-20 06:12:11,735 INFO L268 CegarLoopResult]: For program point L212-2(line 212) no Hoare annotation was computed. [2020-07-20 06:12:11,735 INFO L268 CegarLoopResult]: For program point L200(lines 200 206) no Hoare annotation was computed. [2020-07-20 06:12:11,735 INFO L268 CegarLoopResult]: For program point L200-2(lines 200 206) no Hoare annotation was computed. [2020-07-20 06:12:11,735 INFO L268 CegarLoopResult]: For program point L196(lines 196 199) no Hoare annotation was computed. [2020-07-20 06:12:11,736 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 06:12:11,736 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 425 456) no Hoare annotation was computed. [2020-07-20 06:12:11,736 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 425 456) no Hoare annotation was computed. [2020-07-20 06:12:11,736 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 06:12:11,736 INFO L268 CegarLoopResult]: For program point L450(lines 450 453) no Hoare annotation was computed. [2020-07-20 06:12:11,736 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 06:12:11,736 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 06:12:11,736 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 06:12:11,736 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 06:12:11,736 INFO L268 CegarLoopResult]: For program point L386-1(line 386) no Hoare annotation was computed. [2020-07-20 06:12:11,737 INFO L268 CegarLoopResult]: For program point L374-2(lines 374 391) no Hoare annotation was computed. [2020-07-20 06:12:11,737 INFO L271 CegarLoopResult]: At program point L374-3(lines 374 391) the Hoare annotation is: true [2020-07-20 06:12:11,737 INFO L268 CegarLoopResult]: For program point L374-4(lines 374 391) no Hoare annotation was computed. [2020-07-20 06:12:11,737 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 06:12:11,737 INFO L268 CegarLoopResult]: For program point Id_MCDC_97EXIT(lines 329 397) no Hoare annotation was computed. [2020-07-20 06:12:11,737 INFO L268 CegarLoopResult]: For program point L387(lines 387 390) no Hoare annotation was computed. [2020-07-20 06:12:11,737 INFO L268 CegarLoopResult]: For program point L354(lines 354 395) no Hoare annotation was computed. [2020-07-20 06:12:11,738 INFO L268 CegarLoopResult]: For program point L350-2(lines 350 353) no Hoare annotation was computed. [2020-07-20 06:12:11,738 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 06:12:11,738 INFO L268 CegarLoopResult]: For program point L350-4(lines 330 397) no Hoare annotation was computed. [2020-07-20 06:12:11,738 INFO L271 CegarLoopResult]: At program point L363(line 363) the Hoare annotation is: true [2020-07-20 06:12:11,738 INFO L268 CegarLoopResult]: For program point L363-1(lines 363 366) no Hoare annotation was computed. [2020-07-20 06:12:11,738 INFO L268 CegarLoopResult]: For program point Id_MCDC_97FINAL(lines 329 397) no Hoare annotation was computed. [2020-07-20 06:12:11,738 INFO L271 CegarLoopResult]: At program point L359(line 359) the Hoare annotation is: true [2020-07-20 06:12:11,738 INFO L268 CegarLoopResult]: For program point L359-1(lines 359 362) no Hoare annotation was computed. [2020-07-20 06:12:11,739 INFO L271 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: true [2020-07-20 06:12:11,739 INFO L268 CegarLoopResult]: For program point L376-1(lines 376 379) no Hoare annotation was computed. [2020-07-20 06:12:11,739 INFO L268 CegarLoopResult]: For program point L356-2(lines 356 394) no Hoare annotation was computed. [2020-07-20 06:12:11,739 INFO L271 CegarLoopResult]: At program point L356-3(lines 356 394) the Hoare annotation is: true [2020-07-20 06:12:11,739 INFO L271 CegarLoopResult]: At program point L369(line 369) the Hoare annotation is: true [2020-07-20 06:12:11,739 INFO L268 CegarLoopResult]: For program point L369-1(lines 369 372) no Hoare annotation was computed. [2020-07-20 06:12:11,739 INFO L271 CegarLoopResult]: At program point L386(line 386) the Hoare annotation is: true [2020-07-20 06:12:11,740 INFO L271 CegarLoopResult]: At program point Id_MCDC_95ENTRY(lines 278 297) the Hoare annotation is: true [2020-07-20 06:12:11,740 INFO L268 CegarLoopResult]: For program point Id_MCDC_95EXIT(lines 278 297) no Hoare annotation was computed. [2020-07-20 06:12:11,740 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-07-20 06:12:11,740 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (or (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4)) (= 4 Id_MCDC_95_~Id_MCDC_93)) [2020-07-20 06:12:11,740 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)))) [2020-07-20 06:12:11,740 INFO L268 CegarLoopResult]: For program point L294-1(line 294) no Hoare annotation was computed. [2020-07-20 06:12:11,740 INFO L268 CegarLoopResult]: For program point L296-3(line 296) no Hoare annotation was computed. [2020-07-20 06:12:11,741 INFO L264 CegarLoopResult]: At program point L288(line 288) the Hoare annotation is: (or (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4)) (= 4 Id_MCDC_95_~Id_MCDC_93)) [2020-07-20 06:12:11,741 INFO L268 CegarLoopResult]: For program point L288-1(line 288) no Hoare annotation was computed. [2020-07-20 06:12:11,741 INFO L268 CegarLoopResult]: For program point L286(lines 286 293) no Hoare annotation was computed. [2020-07-20 06:12:11,741 INFO L268 CegarLoopResult]: For program point L286-2(lines 286 293) no Hoare annotation was computed. [2020-07-20 06:12:11,741 INFO L268 CegarLoopResult]: For program point L282(lines 282 285) no Hoare annotation was computed. [2020-07-20 06:12:11,741 INFO L264 CegarLoopResult]: At program point L295(line 295) the Hoare annotation is: (or (not (= |Id_MCDC_95_#in~Id_MCDC_93| 4)) (= 4 Id_MCDC_95_~Id_MCDC_93)) [2020-07-20 06:12:11,741 INFO L268 CegarLoopResult]: For program point L295-1(line 295) no Hoare annotation was computed. [2020-07-20 06:12:11,742 INFO L268 CegarLoopResult]: For program point Id_MCDC_95FINAL(lines 278 297) no Hoare annotation was computed. [2020-07-20 06:12:11,742 INFO L268 CegarLoopResult]: For program point L316(lines 316 321) no Hoare annotation was computed. [2020-07-20 06:12:11,742 INFO L268 CegarLoopResult]: For program point L316-1(lines 314 326) no Hoare annotation was computed. [2020-07-20 06:12:11,742 INFO L268 CegarLoopResult]: For program point L314(line 314) no Hoare annotation was computed. [2020-07-20 06:12:11,742 INFO L268 CegarLoopResult]: For program point L314-2(line 314) no Hoare annotation was computed. [2020-07-20 06:12:11,742 INFO L268 CegarLoopResult]: For program point L314-3(line 314) no Hoare annotation was computed. [2020-07-20 06:12:11,742 INFO L268 CegarLoopResult]: For program point L314-5(lines 314 326) no Hoare annotation was computed. [2020-07-20 06:12:11,742 INFO L268 CegarLoopResult]: For program point L306-1(lines 306 313) no Hoare annotation was computed. [2020-07-20 06:12:11,742 INFO L271 CegarLoopResult]: At program point L306-3(lines 306 313) the Hoare annotation is: true [2020-07-20 06:12:11,742 INFO L268 CegarLoopResult]: For program point L302(lines 302 305) no Hoare annotation was computed. [2020-07-20 06:12:11,742 INFO L268 CegarLoopResult]: For program point L306-4(lines 306 313) no Hoare annotation was computed. [2020-07-20 06:12:11,743 INFO L268 CegarLoopResult]: For program point Id_MCDC_96FINAL(lines 298 328) no Hoare annotation was computed. [2020-07-20 06:12:11,743 INFO L268 CegarLoopResult]: For program point L309(lines 309 312) no Hoare annotation was computed. [2020-07-20 06:12:11,743 INFO L271 CegarLoopResult]: At program point Id_MCDC_96ENTRY(lines 298 328) the Hoare annotation is: true [2020-07-20 06:12:11,743 INFO L268 CegarLoopResult]: For program point Id_MCDC_96EXIT(lines 298 328) no Hoare annotation was computed. [2020-07-20 06:12:11,743 INFO L268 CegarLoopResult]: For program point L253(lines 253 267) no Hoare annotation was computed. [2020-07-20 06:12:11,743 INFO L271 CegarLoopResult]: At program point Id_MCDC_92ENTRY(lines 247 277) the Hoare annotation is: true [2020-07-20 06:12:11,743 INFO L268 CegarLoopResult]: For program point Id_MCDC_92EXIT(lines 247 277) no Hoare annotation was computed. [2020-07-20 06:12:11,743 INFO L268 CegarLoopResult]: For program point Id_MCDC_92FINAL(lines 247 277) no Hoare annotation was computed. [2020-07-20 06:12:11,743 INFO L271 CegarLoopResult]: At program point L270(line 270) the Hoare annotation is: true [2020-07-20 06:12:11,743 INFO L268 CegarLoopResult]: For program point L270-1(line 270) no Hoare annotation was computed. [2020-07-20 06:12:11,743 INFO L268 CegarLoopResult]: For program point L268-1(lines 248 277) no Hoare annotation was computed. [2020-07-20 06:12:11,743 INFO L268 CegarLoopResult]: For program point L268-2(lines 268 275) no Hoare annotation was computed. [2020-07-20 06:12:11,744 INFO L268 CegarLoopResult]: For program point L259(lines 259 267) no Hoare annotation was computed. [2020-07-20 06:12:11,744 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 06:12:11,744 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 06:12:11,744 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 06:12:11,744 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 06:12:11,744 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 06:12:11,744 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 06:12:11,744 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 06:12:11,744 INFO L268 CegarLoopResult]: For program point avoid_zeroEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-20 06:12:11,744 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-20 06:12:11,745 INFO L268 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-07-20 06:12:11,745 INFO L271 CegarLoopResult]: At program point avoid_zeroENTRY(lines 7 13) the Hoare annotation is: true [2020-07-20 06:12:11,745 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 457 464) the Hoare annotation is: true [2020-07-20 06:12:11,745 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 06:12:11,745 INFO L268 CegarLoopResult]: For program point L459(lines 459 462) no Hoare annotation was computed. [2020-07-20 06:12:11,745 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 457 464) no Hoare annotation was computed. [2020-07-20 06:12:11,745 INFO L268 CegarLoopResult]: For program point L459-2(lines 457 464) no Hoare annotation was computed. [2020-07-20 06:12:11,745 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-07-20 06:12:11,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:12:11 BoogieIcfgContainer [2020-07-20 06:12:11,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:12:11,768 INFO L168 Benchmark]: Toolchain (without parser) took 19837.03 ms. Allocated memory was 144.2 MB in the beginning and 451.9 MB in the end (delta: 307.8 MB). Free memory was 101.4 MB in the beginning and 357.4 MB in the end (delta: -256.0 MB). Peak memory consumption was 280.9 MB. Max. memory is 7.1 GB. [2020-07-20 06:12:11,772 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 06:12:11,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.94 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 100.9 MB in the beginning and 173.0 MB in the end (delta: -72.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-20 06:12:11,778 INFO L168 Benchmark]: Boogie Preprocessor took 92.06 ms. Allocated memory is still 202.9 MB. Free memory was 173.0 MB in the beginning and 168.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-20 06:12:11,779 INFO L168 Benchmark]: RCFGBuilder took 2554.99 ms. Allocated memory is still 202.9 MB. Free memory was 168.9 MB in the beginning and 105.8 MB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-07-20 06:12:11,785 INFO L168 Benchmark]: TraceAbstraction took 16576.55 ms. Allocated memory was 202.9 MB in the beginning and 451.9 MB in the end (delta: 249.0 MB). Free memory was 105.1 MB in the beginning and 357.4 MB in the end (delta: -252.2 MB). Peak memory consumption was 225.9 MB. Max. memory is 7.1 GB. [2020-07-20 06:12:11,792 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 144.2 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 606.94 ms. Allocated memory was 144.2 MB in the beginning and 202.9 MB in the end (delta: 58.7 MB). Free memory was 100.9 MB in the beginning and 173.0 MB in the end (delta: -72.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.06 ms. Allocated memory is still 202.9 MB. Free memory was 173.0 MB in the beginning and 168.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2554.99 ms. Allocated memory is still 202.9 MB. Free memory was 168.9 MB in the beginning and 105.8 MB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16576.55 ms. Allocated memory was 202.9 MB in the beginning and 451.9 MB in the end (delta: 249.0 MB). Free memory was 105.1 MB in the beginning and 357.4 MB in the end (delta: -252.2 MB). Peak memory consumption was 225.9 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: 14.0s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1438 SDtfs, 1060 SDslu, 2384 SDs, 0 SdLazy, 2560 SolverSat, 227 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 489 GetRequests, 438 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 219 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 236 PreInvPairs, 261 NumberOfFragments, 279 HoareAnnotationTreeSize, 236 FomulaSimplifications, 41 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 34 FomulaSimplificationsInter, 2866 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 758 NumberOfCodeBlocks, 633 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 744 ConstructedInterpolants, 0 QuantifiedInterpolants, 98189 SizeOfPredicates, 11 NumberOfNonLiveVariables, 3338 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 90/130 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...