./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3e65a9c88991657ab2059827ecd5dfb9aad85be .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3e65a9c88991657ab2059827ecd5dfb9aad85be ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:22:00,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:22:00,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:22:00,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:22:00,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:22:00,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:22:00,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:22:00,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:22:00,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:22:00,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:22:00,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:22:00,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:22:00,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:22:00,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:22:00,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:22:00,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:22:00,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:22:00,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:22:00,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:22:00,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:22:00,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:22:00,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:22:00,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:22:00,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:22:00,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:22:00,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:22:00,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:22:00,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:22:00,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:22:00,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:22:00,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:22:00,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:22:00,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:22:00,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:22:00,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:22:00,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:22:00,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:22:00,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:22:00,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:22:00,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:22:00,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:22:00,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:22:00,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:22:00,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:22:00,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:22:00,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:22:00,252 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:22:00,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:22:00,252 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:22:00,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:22:00,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:22:00,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:22:00,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:22:00,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:22:00,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:22:00,262 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:22:00,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:22:00,262 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:22:00,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:22:00,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:22:00,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:22:00,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:22:00,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:22:00,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:22:00,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:22:00,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:22:00,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:22:00,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:22:00,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:22:00,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:22:00,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:22:00,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3e65a9c88991657ab2059827ecd5dfb9aad85be [2020-10-19 22:22:00,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:22:00,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:22:00,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:22:00,489 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:22:00,489 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:22:00,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2020-10-19 22:22:00,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02ca886e4/972a29373884416a8d492abecd3e2dae/FLAG1e8fae877 [2020-10-19 22:22:01,191 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:22:01,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2020-10-19 22:22:01,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02ca886e4/972a29373884416a8d492abecd3e2dae/FLAG1e8fae877 [2020-10-19 22:22:01,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02ca886e4/972a29373884416a8d492abecd3e2dae [2020-10-19 22:22:01,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:22:01,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:22:01,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:01,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:22:01,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:22:01,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:01" (1/1) ... [2020-10-19 22:22:01,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58073e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01, skipping insertion in model container [2020-10-19 22:22:01,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:01" (1/1) ... [2020-10-19 22:22:01,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:22:01,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:22:01,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:01,740 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:22:01,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:01,829 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:22:01,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01 WrapperNode [2020-10-19 22:22:01,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:01,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:01,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:22:01,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:22:01,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01" (1/1) ... [2020-10-19 22:22:01,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01" (1/1) ... [2020-10-19 22:22:01,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:01,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:22:01,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:22:01,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:22:01,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01" (1/1) ... [2020-10-19 22:22:01,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01" (1/1) ... [2020-10-19 22:22:01,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01" (1/1) ... [2020-10-19 22:22:01,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01" (1/1) ... [2020-10-19 22:22:01,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01" (1/1) ... [2020-10-19 22:22:01,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01" (1/1) ... [2020-10-19 22:22:01,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01" (1/1) ... [2020-10-19 22:22:01,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:22:01,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:22:01,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:22:01,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:22:01,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01" (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 [2020-10-19 22:22:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:22:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:22:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:22:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:22:02,598 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:22:02,599 INFO L298 CfgBuilder]: Removed 38 assume(true) statements. [2020-10-19 22:22:02,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:02 BoogieIcfgContainer [2020-10-19 22:22:02,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:22:02,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:22:02,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:22:02,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:22:02,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:22:01" (1/3) ... [2020-10-19 22:22:02,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@baa9ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:02, skipping insertion in model container [2020-10-19 22:22:02,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:01" (2/3) ... [2020-10-19 22:22:02,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@baa9ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:02, skipping insertion in model container [2020-10-19 22:22:02,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:02" (3/3) ... [2020-10-19 22:22:02,609 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2020-10-19 22:22:02,621 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:22:02,628 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-19 22:22:02,643 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-19 22:22:02,669 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:22:02,669 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:22:02,670 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:22:02,670 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:22:02,670 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:22:02,671 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:22:02,671 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:22:02,671 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:22:02,689 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-10-19 22:22:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:22:02,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:02,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:02,697 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:02,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:02,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2020-10-19 22:22:02,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:02,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683872749] [2020-10-19 22:22:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:03,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683872749] [2020-10-19 22:22:03,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:03,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 22:22:03,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525765954] [2020-10-19 22:22:03,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:03,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:03,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:03,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:03,042 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 7 states. [2020-10-19 22:22:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:03,464 INFO L93 Difference]: Finished difference Result 453 states and 687 transitions. [2020-10-19 22:22:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 22:22:03,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-19 22:22:03,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:03,483 INFO L225 Difference]: With dead ends: 453 [2020-10-19 22:22:03,483 INFO L226 Difference]: Without dead ends: 340 [2020-10-19 22:22:03,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-19 22:22:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-19 22:22:03,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 140. [2020-10-19 22:22:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-19 22:22:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 203 transitions. [2020-10-19 22:22:03,548 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 203 transitions. Word has length 18 [2020-10-19 22:22:03,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:03,548 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 203 transitions. [2020-10-19 22:22:03,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:03,549 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 203 transitions. [2020-10-19 22:22:03,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:22:03,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:03,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:03,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:22:03,553 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:03,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:03,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1626703378, now seen corresponding path program 1 times [2020-10-19 22:22:03,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:03,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291914424] [2020-10-19 22:22:03,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:03,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291914424] [2020-10-19 22:22:03,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:03,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 22:22:03,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413470210] [2020-10-19 22:22:03,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:03,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:03,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:03,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:03,713 INFO L87 Difference]: Start difference. First operand 140 states and 203 transitions. Second operand 6 states. [2020-10-19 22:22:03,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:03,871 INFO L93 Difference]: Finished difference Result 295 states and 421 transitions. [2020-10-19 22:22:03,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:03,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-19 22:22:03,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:03,874 INFO L225 Difference]: With dead ends: 295 [2020-10-19 22:22:03,875 INFO L226 Difference]: Without dead ends: 213 [2020-10-19 22:22:03,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:03,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-19 22:22:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 200. [2020-10-19 22:22:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-19 22:22:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 286 transitions. [2020-10-19 22:22:03,894 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 286 transitions. Word has length 18 [2020-10-19 22:22:03,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:03,894 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 286 transitions. [2020-10-19 22:22:03,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 286 transitions. [2020-10-19 22:22:03,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:22:03,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:03,896 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] [2020-10-19 22:22:03,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:22:03,897 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:03,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:03,897 INFO L82 PathProgramCache]: Analyzing trace with hash 442130173, now seen corresponding path program 1 times [2020-10-19 22:22:03,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:03,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516588993] [2020-10-19 22:22:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:04,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:04,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516588993] [2020-10-19 22:22:04,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:04,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 22:22:04,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554229195] [2020-10-19 22:22:04,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:04,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:04,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:04,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:04,028 INFO L87 Difference]: Start difference. First operand 200 states and 286 transitions. Second operand 7 states. [2020-10-19 22:22:04,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:04,341 INFO L93 Difference]: Finished difference Result 343 states and 461 transitions. [2020-10-19 22:22:04,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 22:22:04,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-19 22:22:04,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:04,344 INFO L225 Difference]: With dead ends: 343 [2020-10-19 22:22:04,344 INFO L226 Difference]: Without dead ends: 297 [2020-10-19 22:22:04,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-19 22:22:04,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-19 22:22:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 189. [2020-10-19 22:22:04,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-19 22:22:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 269 transitions. [2020-10-19 22:22:04,360 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 269 transitions. Word has length 22 [2020-10-19 22:22:04,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:04,360 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 269 transitions. [2020-10-19 22:22:04,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 269 transitions. [2020-10-19 22:22:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 22:22:04,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:04,362 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] [2020-10-19 22:22:04,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:22:04,363 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:04,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:04,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1605480230, now seen corresponding path program 1 times [2020-10-19 22:22:04,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:04,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398687213] [2020-10-19 22:22:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:04,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398687213] [2020-10-19 22:22:04,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:04,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:22:04,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523514787] [2020-10-19 22:22:04,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:22:04,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:04,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:22:04,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:04,405 INFO L87 Difference]: Start difference. First operand 189 states and 269 transitions. Second operand 3 states. [2020-10-19 22:22:04,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:04,430 INFO L93 Difference]: Finished difference Result 341 states and 483 transitions. [2020-10-19 22:22:04,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:22:04,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-19 22:22:04,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:04,443 INFO L225 Difference]: With dead ends: 341 [2020-10-19 22:22:04,443 INFO L226 Difference]: Without dead ends: 266 [2020-10-19 22:22:04,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-19 22:22:04,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 239. [2020-10-19 22:22:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-19 22:22:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 333 transitions. [2020-10-19 22:22:04,458 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 333 transitions. Word has length 26 [2020-10-19 22:22:04,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:04,458 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 333 transitions. [2020-10-19 22:22:04,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:22:04,459 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 333 transitions. [2020-10-19 22:22:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 22:22:04,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:04,460 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] [2020-10-19 22:22:04,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:22:04,461 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:04,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:04,461 INFO L82 PathProgramCache]: Analyzing trace with hash -855546000, now seen corresponding path program 1 times [2020-10-19 22:22:04,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:04,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573009971] [2020-10-19 22:22:04,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:04,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573009971] [2020-10-19 22:22:04,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:04,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:22:04,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937117352] [2020-10-19 22:22:04,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:04,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:04,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:04,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:04,538 INFO L87 Difference]: Start difference. First operand 239 states and 333 transitions. Second operand 5 states. [2020-10-19 22:22:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:04,679 INFO L93 Difference]: Finished difference Result 602 states and 826 transitions. [2020-10-19 22:22:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:22:04,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-19 22:22:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:04,682 INFO L225 Difference]: With dead ends: 602 [2020-10-19 22:22:04,682 INFO L226 Difference]: Without dead ends: 439 [2020-10-19 22:22:04,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-19 22:22:04,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 296. [2020-10-19 22:22:04,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-19 22:22:04,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 410 transitions. [2020-10-19 22:22:04,699 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 410 transitions. Word has length 26 [2020-10-19 22:22:04,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:04,700 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 410 transitions. [2020-10-19 22:22:04,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:04,700 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 410 transitions. [2020-10-19 22:22:04,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:22:04,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:04,702 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] [2020-10-19 22:22:04,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:22:04,702 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:04,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:04,702 INFO L82 PathProgramCache]: Analyzing trace with hash 755236346, now seen corresponding path program 1 times [2020-10-19 22:22:04,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:04,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922510454] [2020-10-19 22:22:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:04,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922510454] [2020-10-19 22:22:04,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:04,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:22:04,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90005926] [2020-10-19 22:22:04,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:22:04,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:04,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:22:04,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:22:04,747 INFO L87 Difference]: Start difference. First operand 296 states and 410 transitions. Second operand 4 states. [2020-10-19 22:22:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:04,790 INFO L93 Difference]: Finished difference Result 425 states and 590 transitions. [2020-10-19 22:22:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:22:04,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 22:22:04,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:04,794 INFO L225 Difference]: With dead ends: 425 [2020-10-19 22:22:04,794 INFO L226 Difference]: Without dead ends: 350 [2020-10-19 22:22:04,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:04,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-19 22:22:04,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 310. [2020-10-19 22:22:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-10-19 22:22:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 419 transitions. [2020-10-19 22:22:04,812 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 419 transitions. Word has length 30 [2020-10-19 22:22:04,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:04,813 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 419 transitions. [2020-10-19 22:22:04,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:22:04,813 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 419 transitions. [2020-10-19 22:22:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:22:04,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:04,814 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] [2020-10-19 22:22:04,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:22:04,815 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:04,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2020-10-19 22:22:04,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:04,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93427800] [2020-10-19 22:22:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:04,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93427800] [2020-10-19 22:22:04,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:04,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 22:22:04,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750695770] [2020-10-19 22:22:04,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:04,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:04,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:04,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:04,978 INFO L87 Difference]: Start difference. First operand 310 states and 419 transitions. Second operand 6 states. [2020-10-19 22:22:05,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:05,289 INFO L93 Difference]: Finished difference Result 803 states and 1088 transitions. [2020-10-19 22:22:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:05,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-19 22:22:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:05,294 INFO L225 Difference]: With dead ends: 803 [2020-10-19 22:22:05,294 INFO L226 Difference]: Without dead ends: 696 [2020-10-19 22:22:05,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:22:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-19 22:22:05,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 448. [2020-10-19 22:22:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-19 22:22:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 608 transitions. [2020-10-19 22:22:05,319 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 608 transitions. Word has length 30 [2020-10-19 22:22:05,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:05,319 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 608 transitions. [2020-10-19 22:22:05,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:05,320 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 608 transitions. [2020-10-19 22:22:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:22:05,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:05,321 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] [2020-10-19 22:22:05,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:22:05,322 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:05,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:05,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1878873742, now seen corresponding path program 1 times [2020-10-19 22:22:05,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:05,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743505053] [2020-10-19 22:22:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:05,357 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:05,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:05,478 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:22:05,479 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:22:05,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:22:05,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:22:05 BoogieIcfgContainer [2020-10-19 22:22:05,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:22:05,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:22:05,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:22:05,554 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:22:05,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:02" (3/4) ... [2020-10-19 22:22:05,559 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:22:05,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:22:05,563 INFO L168 Benchmark]: Toolchain (without parser) took 4121.61 ms. Allocated memory was 44.0 MB in the beginning and 65.5 MB in the end (delta: 21.5 MB). Free memory was 25.8 MB in the beginning and 38.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:05,564 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 33.6 MB. Free memory was 13.7 MB in the beginning and 13.6 MB in the end (delta: 50.4 kB). Peak memory consumption was 50.4 kB. Max. memory is 14.3 GB. [2020-10-19 22:22:05,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.63 ms. Allocated memory was 44.0 MB in the beginning and 44.6 MB in the end (delta: 524.3 kB). Free memory was 24.9 MB in the beginning and 24.1 MB in the end (delta: 769.1 kB). Peak memory consumption was 15.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:05,566 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.39 ms. Allocated memory is still 44.6 MB. Free memory was 24.1 MB in the beginning and 21.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:05,567 INFO L168 Benchmark]: Boogie Preprocessor took 38.59 ms. Allocated memory is still 44.6 MB. Free memory was 21.5 MB in the beginning and 19.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:05,568 INFO L168 Benchmark]: RCFGBuilder took 676.31 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 19.4 MB in the beginning and 26.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:05,569 INFO L168 Benchmark]: TraceAbstraction took 2951.37 ms. Allocated memory was 47.2 MB in the beginning and 65.5 MB in the end (delta: 18.4 MB). Free memory was 26.1 MB in the beginning and 38.6 MB in the end (delta: -12.5 MB). Peak memory consumption was 31.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:05,569 INFO L168 Benchmark]: Witness Printer took 6.38 ms. Allocated memory is still 65.5 MB. Free memory is still 38.6 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:22:05,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 33.6 MB. Free memory was 13.7 MB in the beginning and 13.6 MB in the end (delta: 50.4 kB). Peak memory consumption was 50.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 383.63 ms. Allocated memory was 44.0 MB in the beginning and 44.6 MB in the end (delta: 524.3 kB). Free memory was 24.9 MB in the beginning and 24.1 MB in the end (delta: 769.1 kB). Peak memory consumption was 15.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 54.39 ms. Allocated memory is still 44.6 MB. Free memory was 24.1 MB in the beginning and 21.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 38.59 ms. Allocated memory is still 44.6 MB. Free memory was 21.5 MB in the beginning and 19.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 676.31 ms. Allocated memory was 44.6 MB in the beginning and 47.2 MB in the end (delta: 2.6 MB). Free memory was 19.4 MB in the beginning and 26.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2951.37 ms. Allocated memory was 47.2 MB in the beginning and 65.5 MB in the end (delta: 18.4 MB). Free memory was 26.1 MB in the beginning and 38.6 MB in the end (delta: -12.5 MB). Peak memory consumption was 31.6 MB. Max. memory is 14.3 GB. * Witness Printer took 6.38 ms. Allocated memory is still 65.5 MB. Free memory is still 38.6 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 101. Possible FailurePath: [L219] unsigned int a ; [L220] unsigned int ma = __VERIFIER_nondet_uint(); [L221] signed char ea = __VERIFIER_nondet_char(); [L222] unsigned int b ; [L223] unsigned int mb = __VERIFIER_nondet_uint(); [L224] signed char eb = __VERIFIER_nondet_char(); [L225] unsigned int r_add ; [L226] unsigned int zero ; [L227] int sa ; [L228] int sb ; [L229] int tmp ; [L230] int tmp___0 ; [L231] int tmp___1 ; [L232] int tmp___2 ; [L233] int tmp___3 ; [L234] int tmp___4 ; [L235] int tmp___5 ; [L236] int tmp___6 ; [L237] int tmp___7 ; [L238] int tmp___8 ; [L239] int tmp___9 ; [L240] int __retres23 ; [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND TRUE ! m [L23] __retres4 = 0U [L73] return (__retres4); [L244] zero = base2flt(0, 0) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND TRUE m >= 1U << 25U [L57] COND TRUE e >= 127 [L58] __retres4 = 4294967295U [L73] return (__retres4); [L245] a = base2flt(ma, ea) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND FALSE !(m >= 1U << 25U) [L69] m = m & ~ (1U << 24U) [L70] res = m | ((unsigned int ) (e + 128) << 24U) [L71] __retres4 = res [L73] return (__retres4); [L246] b = base2flt(mb, eb) [L248] COND FALSE !(a < zero) [L251] COND TRUE a > zero [L252] tmp = 1 [L256] sa = tmp [L258] COND FALSE !(b < zero) [L261] COND TRUE b > zero [L262] tmp___0 = 1 [L266] sb = tmp___0 [L77] unsigned int res ; [L78] unsigned int ma ; [L79] unsigned int mb ; [L80] unsigned int delta ; [L81] int ea ; [L82] int eb ; [L83] unsigned int tmp ; [L84] unsigned int __retres10 ; [L87] COND FALSE !(a < b) [L94] COND FALSE !(! b) [L101] ma = a & ((1U << 24U) - 1U) [L102] ea = (int )(a >> 24U) - 128 [L103] ma = ma | (1U << 24U) [L104] mb = b & ((1U << 24U) - 1U) [L105] eb = (int )(b >> 24U) - 128 [L106] mb = mb | (1U << 24U) [L9] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_1-2a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 99 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1025 SDtfs, 2593 SDslu, 3156 SDs, 0 SdLazy, 590 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=448occurred 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, 7 MinimizatonAttempts, 779 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 10347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:22:07,667 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-19 22:22:07,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:22:07,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:22:07,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:22:07,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:22:07,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:22:07,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:22:07,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:22:07,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:22:07,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:22:07,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:22:07,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:22:07,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-19 22:22:07,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:22:07,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:22:07,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:22:07,812 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:22:07,813 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:22:07,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:22:07,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:22:07,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:22:07,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:22:07,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:22:07,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:22:07,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:22:07,815 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 22:22:07,815 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 22:22:07,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:22:07,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:22:07,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:22:07,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:22:07,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:22:07,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:22:07,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:22:07,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:22:07,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:22:07,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:22:07,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:22:07,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:22:07,818 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 22:22:07,818 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 22:22:07,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:22:07,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:22:07,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 22:22:07,819 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3e65a9c88991657ab2059827ecd5dfb9aad85be [2020-10-19 22:22:08,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:22:08,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:22:08,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:22:08,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:22:08,035 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:22:08,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2020-10-19 22:22:08,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7388682d9/d26f9ae3868b4d08bc6989ed1c18c72a/FLAG31bc9dde3 [2020-10-19 22:22:08,697 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:22:08,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2020-10-19 22:22:08,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7388682d9/d26f9ae3868b4d08bc6989ed1c18c72a/FLAG31bc9dde3 [2020-10-19 22:22:09,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7388682d9/d26f9ae3868b4d08bc6989ed1c18c72a [2020-10-19 22:22:09,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:22:09,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:22:09,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:09,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:22:09,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:22:09,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:09" (1/1) ... [2020-10-19 22:22:09,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5e3ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09, skipping insertion in model container [2020-10-19 22:22:09,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:09" (1/1) ... [2020-10-19 22:22:09,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:22:09,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:22:09,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:09,401 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:22:09,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:09,496 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:22:09,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09 WrapperNode [2020-10-19 22:22:09,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:09,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:09,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:22:09,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:22:09,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09" (1/1) ... [2020-10-19 22:22:09,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09" (1/1) ... [2020-10-19 22:22:09,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:09,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:22:09,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:22:09,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:22:09,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09" (1/1) ... [2020-10-19 22:22:09,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09" (1/1) ... [2020-10-19 22:22:09,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09" (1/1) ... [2020-10-19 22:22:09,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09" (1/1) ... [2020-10-19 22:22:09,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09" (1/1) ... [2020-10-19 22:22:09,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09" (1/1) ... [2020-10-19 22:22:09,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09" (1/1) ... [2020-10-19 22:22:09,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:22:09,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:22:09,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:22:09,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:22:09,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09" (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 [2020-10-19 22:22:09,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 22:22:09,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:22:09,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:22:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:22:10,273 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:22:10,273 INFO L298 CfgBuilder]: Removed 38 assume(true) statements. [2020-10-19 22:22:10,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:10 BoogieIcfgContainer [2020-10-19 22:22:10,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:22:10,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:22:10,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:22:10,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:22:10,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:22:09" (1/3) ... [2020-10-19 22:22:10,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8813b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:10, skipping insertion in model container [2020-10-19 22:22:10,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:09" (2/3) ... [2020-10-19 22:22:10,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8813b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:10, skipping insertion in model container [2020-10-19 22:22:10,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:10" (3/3) ... [2020-10-19 22:22:10,284 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2020-10-19 22:22:10,296 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:22:10,303 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-19 22:22:10,313 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-19 22:22:10,336 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:22:10,336 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:22:10,337 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:22:10,337 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:22:10,338 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:22:10,339 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:22:10,339 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:22:10,339 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:22:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-10-19 22:22:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:22:10,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:10,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:10,364 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:10,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2020-10-19 22:22:10,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:10,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737275525] [2020-10-19 22:22:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:10,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:22:10,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:10,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:10,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737275525] [2020-10-19 22:22:10,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:10,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 22:22:10,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422741919] [2020-10-19 22:22:10,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:10,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:10,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:10,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:10,631 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 5 states. [2020-10-19 22:22:10,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:10,894 INFO L93 Difference]: Finished difference Result 392 states and 602 transitions. [2020-10-19 22:22:10,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:22:10,896 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-19 22:22:10,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:10,914 INFO L225 Difference]: With dead ends: 392 [2020-10-19 22:22:10,914 INFO L226 Difference]: Without dead ends: 287 [2020-10-19 22:22:10,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:10,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-19 22:22:10,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 118. [2020-10-19 22:22:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-19 22:22:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 170 transitions. [2020-10-19 22:22:10,977 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 170 transitions. Word has length 18 [2020-10-19 22:22:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:10,977 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 170 transitions. [2020-10-19 22:22:10,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:10,978 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 170 transitions. [2020-10-19 22:22:10,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:22:10,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:10,980 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] [2020-10-19 22:22:11,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 22:22:11,194 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:11,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:11,195 INFO L82 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2020-10-19 22:22:11,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:11,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295223223] [2020-10-19 22:22:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:11,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:22:11,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:11,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:11,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295223223] [2020-10-19 22:22:11,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:11,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 22:22:11,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471671612] [2020-10-19 22:22:11,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:11,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:11,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:11,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:11,322 INFO L87 Difference]: Start difference. First operand 118 states and 170 transitions. Second operand 5 states. [2020-10-19 22:22:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:11,550 INFO L93 Difference]: Finished difference Result 384 states and 533 transitions. [2020-10-19 22:22:11,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:22:11,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-19 22:22:11,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:11,555 INFO L225 Difference]: With dead ends: 384 [2020-10-19 22:22:11,556 INFO L226 Difference]: Without dead ends: 329 [2020-10-19 22:22:11,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-19 22:22:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 184. [2020-10-19 22:22:11,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-19 22:22:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 266 transitions. [2020-10-19 22:22:11,608 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 266 transitions. Word has length 22 [2020-10-19 22:22:11,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:11,609 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 266 transitions. [2020-10-19 22:22:11,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:11,609 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 266 transitions. [2020-10-19 22:22:11,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:22:11,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:11,611 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] [2020-10-19 22:22:11,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 22:22:11,825 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:11,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2020-10-19 22:22:11,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:11,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870442436] [2020-10-19 22:22:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:11,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:22:11,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:11,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:11,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870442436] [2020-10-19 22:22:11,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:11,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 22:22:11,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235705376] [2020-10-19 22:22:11,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:11,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:11,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:11,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:11,940 INFO L87 Difference]: Start difference. First operand 184 states and 266 transitions. Second operand 5 states. [2020-10-19 22:22:12,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:12,094 INFO L93 Difference]: Finished difference Result 372 states and 526 transitions. [2020-10-19 22:22:12,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:22:12,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-19 22:22:12,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:12,097 INFO L225 Difference]: With dead ends: 372 [2020-10-19 22:22:12,097 INFO L226 Difference]: Without dead ends: 291 [2020-10-19 22:22:12,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:12,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-19 22:22:12,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 276. [2020-10-19 22:22:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-19 22:22:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 396 transitions. [2020-10-19 22:22:12,119 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 396 transitions. Word has length 22 [2020-10-19 22:22:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:12,120 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 396 transitions. [2020-10-19 22:22:12,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:12,120 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 396 transitions. [2020-10-19 22:22:12,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 22:22:12,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:12,122 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] [2020-10-19 22:22:12,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 22:22:12,336 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2020-10-19 22:22:12,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:12,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930390943] [2020-10-19 22:22:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:12,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:22:12,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:12,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:12,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:12,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930390943] [2020-10-19 22:22:12,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:12,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-19 22:22:12,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663046362] [2020-10-19 22:22:12,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:12,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:12,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:12,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:12,477 INFO L87 Difference]: Start difference. First operand 276 states and 396 transitions. Second operand 6 states. [2020-10-19 22:22:12,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:12,654 INFO L93 Difference]: Finished difference Result 391 states and 547 transitions. [2020-10-19 22:22:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:22:12,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-19 22:22:12,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:12,657 INFO L225 Difference]: With dead ends: 391 [2020-10-19 22:22:12,657 INFO L226 Difference]: Without dead ends: 316 [2020-10-19 22:22:12,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-19 22:22:12,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 256. [2020-10-19 22:22:12,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-19 22:22:12,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 362 transitions. [2020-10-19 22:22:12,673 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 362 transitions. Word has length 22 [2020-10-19 22:22:12,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:12,674 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 362 transitions. [2020-10-19 22:22:12,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:12,674 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 362 transitions. [2020-10-19 22:22:12,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 22:22:12,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:12,676 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] [2020-10-19 22:22:12,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 22:22:12,890 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:12,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:12,891 INFO L82 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2020-10-19 22:22:12,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:12,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018831628] [2020-10-19 22:22:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:12,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:22:12,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:13,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:13,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018831628] [2020-10-19 22:22:13,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:13,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2020-10-19 22:22:13,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238838647] [2020-10-19 22:22:13,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:13,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:13,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:13,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:13,035 INFO L87 Difference]: Start difference. First operand 256 states and 362 transitions. Second operand 7 states. [2020-10-19 22:22:13,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:13,353 INFO L93 Difference]: Finished difference Result 398 states and 537 transitions. [2020-10-19 22:22:13,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 22:22:13,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-19 22:22:13,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:13,356 INFO L225 Difference]: With dead ends: 398 [2020-10-19 22:22:13,357 INFO L226 Difference]: Without dead ends: 352 [2020-10-19 22:22:13,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-19 22:22:13,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-19 22:22:13,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 246. [2020-10-19 22:22:13,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-19 22:22:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 346 transitions. [2020-10-19 22:22:13,372 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 346 transitions. Word has length 26 [2020-10-19 22:22:13,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:13,373 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 346 transitions. [2020-10-19 22:22:13,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:13,373 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 346 transitions. [2020-10-19 22:22:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:22:13,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:13,375 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] [2020-10-19 22:22:13,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 22:22:13,588 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:13,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:13,589 INFO L82 PathProgramCache]: Analyzing trace with hash 755236346, now seen corresponding path program 1 times [2020-10-19 22:22:13,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:13,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272832565] [2020-10-19 22:22:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:13,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:22:13,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:13,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:13,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272832565] [2020-10-19 22:22:13,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:13,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 22:22:13,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527112966] [2020-10-19 22:22:13,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:13,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:13,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:13,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:13,698 INFO L87 Difference]: Start difference. First operand 246 states and 346 transitions. Second operand 6 states. [2020-10-19 22:22:13,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:13,753 INFO L93 Difference]: Finished difference Result 450 states and 629 transitions. [2020-10-19 22:22:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:13,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-19 22:22:13,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:13,756 INFO L225 Difference]: With dead ends: 450 [2020-10-19 22:22:13,756 INFO L226 Difference]: Without dead ends: 375 [2020-10-19 22:22:13,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-19 22:22:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 308. [2020-10-19 22:22:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-19 22:22:13,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 419 transitions. [2020-10-19 22:22:13,774 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 419 transitions. Word has length 30 [2020-10-19 22:22:13,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:13,775 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 419 transitions. [2020-10-19 22:22:13,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:13,775 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 419 transitions. [2020-10-19 22:22:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:22:13,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:13,777 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] [2020-10-19 22:22:13,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 22:22:13,988 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:13,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:13,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2020-10-19 22:22:13,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:13,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133721078] [2020-10-19 22:22:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:14,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 22:22:14,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:14,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:14,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133721078] [2020-10-19 22:22:14,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:14,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2020-10-19 22:22:14,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405788597] [2020-10-19 22:22:14,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:22:14,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:14,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:22:14,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:14,159 INFO L87 Difference]: Start difference. First operand 308 states and 419 transitions. Second operand 8 states. [2020-10-19 22:22:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:14,980 INFO L93 Difference]: Finished difference Result 902 states and 1246 transitions. [2020-10-19 22:22:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 22:22:14,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-19 22:22:14,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:14,986 INFO L225 Difference]: With dead ends: 902 [2020-10-19 22:22:14,986 INFO L226 Difference]: Without dead ends: 797 [2020-10-19 22:22:14,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-19 22:22:14,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-10-19 22:22:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 444. [2020-10-19 22:22:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-19 22:22:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 602 transitions. [2020-10-19 22:22:15,030 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 602 transitions. Word has length 30 [2020-10-19 22:22:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:15,030 INFO L481 AbstractCegarLoop]: Abstraction has 444 states and 602 transitions. [2020-10-19 22:22:15,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:22:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 602 transitions. [2020-10-19 22:22:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 22:22:15,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:15,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:15,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 22:22:15,248 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:15,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1117029713, now seen corresponding path program 1 times [2020-10-19 22:22:15,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:15,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381698264] [2020-10-19 22:22:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:15,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 22:22:15,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:15,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:15,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381698264] [2020-10-19 22:22:15,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:15,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2020-10-19 22:22:15,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308999938] [2020-10-19 22:22:15,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 22:22:15,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:15,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 22:22:15,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-19 22:22:15,460 INFO L87 Difference]: Start difference. First operand 444 states and 602 transitions. Second operand 13 states. [2020-10-19 22:22:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:16,509 INFO L93 Difference]: Finished difference Result 742 states and 994 transitions. [2020-10-19 22:22:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-19 22:22:16,510 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-19 22:22:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:16,514 INFO L225 Difference]: With dead ends: 742 [2020-10-19 22:22:16,514 INFO L226 Difference]: Without dead ends: 701 [2020-10-19 22:22:16,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2020-10-19 22:22:16,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-10-19 22:22:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 442. [2020-10-19 22:22:16,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-19 22:22:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 597 transitions. [2020-10-19 22:22:16,554 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 597 transitions. Word has length 31 [2020-10-19 22:22:16,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:16,554 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 597 transitions. [2020-10-19 22:22:16,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 22:22:16,555 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 597 transitions. [2020-10-19 22:22:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-19 22:22:16,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:16,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:16,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 22:22:16,775 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:16,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:16,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1174288015, now seen corresponding path program 1 times [2020-10-19 22:22:16,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:16,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994091408] [2020-10-19 22:22:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:16,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:22:16,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:16,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:16,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994091408] [2020-10-19 22:22:16,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:16,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 22:22:16,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099677155] [2020-10-19 22:22:16,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:16,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:16,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:16,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:16,881 INFO L87 Difference]: Start difference. First operand 442 states and 597 transitions. Second operand 6 states. [2020-10-19 22:22:16,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:16,962 INFO L93 Difference]: Finished difference Result 499 states and 672 transitions. [2020-10-19 22:22:16,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:16,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-19 22:22:16,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:16,967 INFO L225 Difference]: With dead ends: 499 [2020-10-19 22:22:16,967 INFO L226 Difference]: Without dead ends: 494 [2020-10-19 22:22:16,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-19 22:22:16,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 442. [2020-10-19 22:22:16,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-19 22:22:16,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 592 transitions. [2020-10-19 22:22:16,995 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 592 transitions. Word has length 31 [2020-10-19 22:22:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:16,997 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 592 transitions. [2020-10-19 22:22:16,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:17,004 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 592 transitions. [2020-10-19 22:22:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 22:22:17,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:17,006 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] [2020-10-19 22:22:17,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 22:22:17,228 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:17,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:17,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1226989779, now seen corresponding path program 1 times [2020-10-19 22:22:17,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:17,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383495429] [2020-10-19 22:22:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:17,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:22:17,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:17,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:17,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383495429] [2020-10-19 22:22:17,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:17,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 22:22:17,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688185393] [2020-10-19 22:22:17,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:17,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:17,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:17,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:17,313 INFO L87 Difference]: Start difference. First operand 442 states and 592 transitions. Second operand 6 states. [2020-10-19 22:22:17,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:17,393 INFO L93 Difference]: Finished difference Result 895 states and 1172 transitions. [2020-10-19 22:22:17,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:17,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-19 22:22:17,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:17,397 INFO L225 Difference]: With dead ends: 895 [2020-10-19 22:22:17,397 INFO L226 Difference]: Without dead ends: 836 [2020-10-19 22:22:17,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:17,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-19 22:22:17,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 474. [2020-10-19 22:22:17,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-10-19 22:22:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 634 transitions. [2020-10-19 22:22:17,436 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 634 transitions. Word has length 32 [2020-10-19 22:22:17,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:17,437 INFO L481 AbstractCegarLoop]: Abstraction has 474 states and 634 transitions. [2020-10-19 22:22:17,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:17,437 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 634 transitions. [2020-10-19 22:22:17,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 22:22:17,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:17,439 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] [2020-10-19 22:22:17,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-19 22:22:17,651 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:17,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:17,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1209454462, now seen corresponding path program 1 times [2020-10-19 22:22:17,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:17,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352199600] [2020-10-19 22:22:17,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:17,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:22:17,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:17,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:17,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352199600] [2020-10-19 22:22:17,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:17,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 22:22:17,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143725428] [2020-10-19 22:22:17,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:22:17,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:17,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:22:17,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:22:17,740 INFO L87 Difference]: Start difference. First operand 474 states and 634 transitions. Second operand 4 states. [2020-10-19 22:22:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:17,786 INFO L93 Difference]: Finished difference Result 486 states and 647 transitions. [2020-10-19 22:22:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:22:17,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-19 22:22:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:17,790 INFO L225 Difference]: With dead ends: 486 [2020-10-19 22:22:17,790 INFO L226 Difference]: Without dead ends: 417 [2020-10-19 22:22:17,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-10-19 22:22:17,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-10-19 22:22:17,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-19 22:22:17,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 560 transitions. [2020-10-19 22:22:17,820 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 560 transitions. Word has length 35 [2020-10-19 22:22:17,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:17,820 INFO L481 AbstractCegarLoop]: Abstraction has 416 states and 560 transitions. [2020-10-19 22:22:17,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:22:17,820 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 560 transitions. [2020-10-19 22:22:17,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 22:22:17,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:17,822 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] [2020-10-19 22:22:18,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-19 22:22:18,033 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:18,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1073193596, now seen corresponding path program 1 times [2020-10-19 22:22:18,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:18,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677472757] [2020-10-19 22:22:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:18,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:22:18,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:18,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:18,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677472757] [2020-10-19 22:22:18,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:18,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 22:22:18,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580484286] [2020-10-19 22:22:18,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:18,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:18,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:18,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:18,144 INFO L87 Difference]: Start difference. First operand 416 states and 560 transitions. Second operand 6 states. [2020-10-19 22:22:18,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:18,320 INFO L93 Difference]: Finished difference Result 647 states and 843 transitions. [2020-10-19 22:22:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:22:18,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-19 22:22:18,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:18,324 INFO L225 Difference]: With dead ends: 647 [2020-10-19 22:22:18,324 INFO L226 Difference]: Without dead ends: 610 [2020-10-19 22:22:18,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:18,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-10-19 22:22:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 428. [2020-10-19 22:22:18,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-19 22:22:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 572 transitions. [2020-10-19 22:22:18,354 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 572 transitions. Word has length 36 [2020-10-19 22:22:18,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:18,354 INFO L481 AbstractCegarLoop]: Abstraction has 428 states and 572 transitions. [2020-10-19 22:22:18,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 572 transitions. [2020-10-19 22:22:18,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 22:22:18,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:18,356 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] [2020-10-19 22:22:18,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-10-19 22:22:18,570 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:18,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:18,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1863502974, now seen corresponding path program 1 times [2020-10-19 22:22:18,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:18,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601734202] [2020-10-19 22:22:18,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:18,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:22:18,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:18,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:18,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601734202] [2020-10-19 22:22:18,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:18,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-19 22:22:18,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013546432] [2020-10-19 22:22:18,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:22:18,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:18,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:22:18,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:18,700 INFO L87 Difference]: Start difference. First operand 428 states and 572 transitions. Second operand 8 states. [2020-10-19 22:22:19,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:19,031 INFO L93 Difference]: Finished difference Result 597 states and 777 transitions. [2020-10-19 22:22:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:19,031 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-19 22:22:19,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:19,034 INFO L225 Difference]: With dead ends: 597 [2020-10-19 22:22:19,034 INFO L226 Difference]: Without dead ends: 550 [2020-10-19 22:22:19,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-19 22:22:19,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-10-19 22:22:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 428. [2020-10-19 22:22:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-19 22:22:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 570 transitions. [2020-10-19 22:22:19,063 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 570 transitions. Word has length 36 [2020-10-19 22:22:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:19,065 INFO L481 AbstractCegarLoop]: Abstraction has 428 states and 570 transitions. [2020-10-19 22:22:19,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:22:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 570 transitions. [2020-10-19 22:22:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 22:22:19,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:19,066 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] [2020-10-19 22:22:19,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-10-19 22:22:19,279 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:19,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:19,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1419990347, now seen corresponding path program 1 times [2020-10-19 22:22:19,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:19,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103538748] [2020-10-19 22:22:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:19,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 22:22:19,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:19,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:19,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:19,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103538748] [2020-10-19 22:22:19,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:19,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-10-19 22:22:19,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845640889] [2020-10-19 22:22:19,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 22:22:19,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:19,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 22:22:19,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-19 22:22:19,488 INFO L87 Difference]: Start difference. First operand 428 states and 570 transitions. Second operand 12 states. [2020-10-19 22:22:20,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:20,768 INFO L93 Difference]: Finished difference Result 853 states and 1103 transitions. [2020-10-19 22:22:20,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-19 22:22:20,769 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-19 22:22:20,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:20,774 INFO L225 Difference]: With dead ends: 853 [2020-10-19 22:22:20,774 INFO L226 Difference]: Without dead ends: 828 [2020-10-19 22:22:20,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-10-19 22:22:20,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-10-19 22:22:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 509. [2020-10-19 22:22:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-19 22:22:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 677 transitions. [2020-10-19 22:22:20,868 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 677 transitions. Word has length 37 [2020-10-19 22:22:20,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:20,869 INFO L481 AbstractCegarLoop]: Abstraction has 509 states and 677 transitions. [2020-10-19 22:22:20,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 22:22:20,869 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 677 transitions. [2020-10-19 22:22:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 22:22:20,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:20,871 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] [2020-10-19 22:22:21,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-10-19 22:22:21,080 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:21,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:21,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1154657493, now seen corresponding path program 1 times [2020-10-19 22:22:21,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:21,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500552744] [2020-10-19 22:22:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:21,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:22:21,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:21,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:21,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500552744] [2020-10-19 22:22:21,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:21,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-19 22:22:21,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955281746] [2020-10-19 22:22:21,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:21,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:21,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:21,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:21,164 INFO L87 Difference]: Start difference. First operand 509 states and 677 transitions. Second operand 6 states. [2020-10-19 22:22:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:21,230 INFO L93 Difference]: Finished difference Result 580 states and 764 transitions. [2020-10-19 22:22:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:22:21,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-19 22:22:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:21,233 INFO L225 Difference]: With dead ends: 580 [2020-10-19 22:22:21,234 INFO L226 Difference]: Without dead ends: 544 [2020-10-19 22:22:21,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:21,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-10-19 22:22:21,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 513. [2020-10-19 22:22:21,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-19 22:22:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 669 transitions. [2020-10-19 22:22:21,283 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 669 transitions. Word has length 37 [2020-10-19 22:22:21,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:21,284 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 669 transitions. [2020-10-19 22:22:21,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:21,284 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 669 transitions. [2020-10-19 22:22:21,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 22:22:21,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:21,286 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] [2020-10-19 22:22:21,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-10-19 22:22:21,499 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:21,500 INFO L82 PathProgramCache]: Analyzing trace with hash -731955667, now seen corresponding path program 1 times [2020-10-19 22:22:21,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:21,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458761540] [2020-10-19 22:22:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:21,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 22:22:21,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:21,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:21,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458761540] [2020-10-19 22:22:21,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:21,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2020-10-19 22:22:21,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282160024] [2020-10-19 22:22:21,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 22:22:21,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:21,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 22:22:21,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-19 22:22:21,672 INFO L87 Difference]: Start difference. First operand 513 states and 669 transitions. Second operand 14 states. [2020-10-19 22:22:22,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:22,461 INFO L93 Difference]: Finished difference Result 1515 states and 1858 transitions. [2020-10-19 22:22:22,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-19 22:22:22,462 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-19 22:22:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:22,472 INFO L225 Difference]: With dead ends: 1515 [2020-10-19 22:22:22,472 INFO L226 Difference]: Without dead ends: 1464 [2020-10-19 22:22:22,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-10-19 22:22:22,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2020-10-19 22:22:22,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 515. [2020-10-19 22:22:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2020-10-19 22:22:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 670 transitions. [2020-10-19 22:22:22,540 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 670 transitions. Word has length 37 [2020-10-19 22:22:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:22,541 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 670 transitions. [2020-10-19 22:22:22,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 22:22:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 670 transitions. [2020-10-19 22:22:22,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 22:22:22,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:22,543 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] [2020-10-19 22:22:22,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-10-19 22:22:22,757 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:22,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:22,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1539733553, now seen corresponding path program 1 times [2020-10-19 22:22:22,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:22,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4367978] [2020-10-19 22:22:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:22,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 22:22:22,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:23,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4367978] [2020-10-19 22:22:23,721 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:22:23,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [95348554] [2020-10-19 22:22:23,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 22:22:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:23,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 22:22:23,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:23,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:24,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:24,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2020-10-19 22:22:24,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569610676] [2020-10-19 22:22:24,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-19 22:22:24,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:24,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-19 22:22:24,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-19 22:22:24,529 INFO L87 Difference]: Start difference. First operand 515 states and 670 transitions. Second operand 16 states. [2020-10-19 22:22:29,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:29,585 INFO L93 Difference]: Finished difference Result 1478 states and 1792 transitions. [2020-10-19 22:22:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-19 22:22:29,586 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-19 22:22:29,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:29,594 INFO L225 Difference]: With dead ends: 1478 [2020-10-19 22:22:29,594 INFO L226 Difference]: Without dead ends: 1413 [2020-10-19 22:22:29,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=202, Invalid=667, Unknown=1, NotChecked=0, Total=870 [2020-10-19 22:22:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2020-10-19 22:22:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 515. [2020-10-19 22:22:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2020-10-19 22:22:29,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 667 transitions. [2020-10-19 22:22:29,649 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 667 transitions. Word has length 37 [2020-10-19 22:22:29,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:29,649 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 667 transitions. [2020-10-19 22:22:29,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-19 22:22:29,650 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 667 transitions. [2020-10-19 22:22:29,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 22:22:29,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:29,651 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] [2020-10-19 22:22:30,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3,19 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 22:22:30,066 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:30,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:30,067 INFO L82 PathProgramCache]: Analyzing trace with hash -874171543, now seen corresponding path program 1 times [2020-10-19 22:22:30,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:30,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491158536] [2020-10-19 22:22:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:30,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:22:30,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:30,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:30,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491158536] [2020-10-19 22:22:30,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:30,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-19 22:22:30,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777549547] [2020-10-19 22:22:30,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:22:30,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:30,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:22:30,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:22:30,149 INFO L87 Difference]: Start difference. First operand 515 states and 667 transitions. Second operand 4 states. [2020-10-19 22:22:30,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:30,200 INFO L93 Difference]: Finished difference Result 521 states and 672 transitions. [2020-10-19 22:22:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:22:30,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-19 22:22:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:30,203 INFO L225 Difference]: With dead ends: 521 [2020-10-19 22:22:30,204 INFO L226 Difference]: Without dead ends: 437 [2020-10-19 22:22:30,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:30,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-19 22:22:30,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 429. [2020-10-19 22:22:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-19 22:22:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 551 transitions. [2020-10-19 22:22:30,237 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 551 transitions. Word has length 37 [2020-10-19 22:22:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:30,238 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 551 transitions. [2020-10-19 22:22:30,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:22:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 551 transitions. [2020-10-19 22:22:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 22:22:30,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:30,240 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] [2020-10-19 22:22:30,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-10-19 22:22:30,453 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:30,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:30,453 INFO L82 PathProgramCache]: Analyzing trace with hash -931429845, now seen corresponding path program 1 times [2020-10-19 22:22:30,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:30,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272727833] [2020-10-19 22:22:30,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:30,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 22:22:30,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:30,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:30,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272727833] [2020-10-19 22:22:30,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:30,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-19 22:22:30,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32698690] [2020-10-19 22:22:30,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:30,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:30,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:30,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:30,610 INFO L87 Difference]: Start difference. First operand 429 states and 551 transitions. Second operand 6 states. [2020-10-19 22:22:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:30,858 INFO L93 Difference]: Finished difference Result 737 states and 912 transitions. [2020-10-19 22:22:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:30,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-10-19 22:22:30,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:30,867 INFO L225 Difference]: With dead ends: 737 [2020-10-19 22:22:30,867 INFO L226 Difference]: Without dead ends: 709 [2020-10-19 22:22:30,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:22:30,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-19 22:22:30,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 448. [2020-10-19 22:22:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-10-19 22:22:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 574 transitions. [2020-10-19 22:22:30,905 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 574 transitions. Word has length 37 [2020-10-19 22:22:30,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:30,905 INFO L481 AbstractCegarLoop]: Abstraction has 448 states and 574 transitions. [2020-10-19 22:22:30,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 574 transitions. [2020-10-19 22:22:30,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 22:22:30,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:30,907 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] [2020-10-19 22:22:31,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3 [2020-10-19 22:22:31,118 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash 696453099, now seen corresponding path program 1 times [2020-10-19 22:22:31,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:22:31,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805983077] [2020-10-19 22:22:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2020-10-19 22:22:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:31,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:22:31,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:36,476 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 22:22:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:36,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:22:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:36,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805983077] [2020-10-19 22:22:36,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:36,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-10-19 22:22:36,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693315242] [2020-10-19 22:22:36,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 22:22:36,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:22:36,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 22:22:36,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=90, Unknown=1, NotChecked=0, Total=132 [2020-10-19 22:22:36,715 INFO L87 Difference]: Start difference. First operand 448 states and 574 transitions. Second operand 12 states. [2020-10-19 22:23:01,366 WARN L193 SmtUtils]: Spent 4.35 s on a formula simplification. DAG size of input: 24 DAG size of output: 17 [2020-10-19 22:23:01,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:01,440 INFO L93 Difference]: Finished difference Result 574 states and 711 transitions. [2020-10-19 22:23:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 22:23:01,441 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-19 22:23:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:01,445 INFO L225 Difference]: With dead ends: 574 [2020-10-19 22:23:01,445 INFO L226 Difference]: Without dead ends: 572 [2020-10-19 22:23:01,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=126, Invalid=289, Unknown=5, NotChecked=0, Total=420 [2020-10-19 22:23:01,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-19 22:23:01,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 446. [2020-10-19 22:23:01,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-19 22:23:01,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 565 transitions. [2020-10-19 22:23:01,493 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 565 transitions. Word has length 37 [2020-10-19 22:23:01,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:01,494 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 565 transitions. [2020-10-19 22:23:01,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 22:23:01,494 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 565 transitions. [2020-10-19 22:23:01,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-19 22:23:01,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:01,495 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] [2020-10-19 22:23:01,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3 [2020-10-19 22:23:01,708 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:01,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:01,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1845440380, now seen corresponding path program 1 times [2020-10-19 22:23:01,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:23:01,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97344309] [2020-10-19 22:23:01,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2020-10-19 22:23:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:01,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 22:23:01,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:23:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:01,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:23:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:01,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97344309] [2020-10-19 22:23:01,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:01,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 22:23:01,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061113094] [2020-10-19 22:23:01,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:23:01,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:23:01,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:23:01,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:01,769 INFO L87 Difference]: Start difference. First operand 446 states and 565 transitions. Second operand 3 states. [2020-10-19 22:23:01,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:01,836 INFO L93 Difference]: Finished difference Result 739 states and 920 transitions. [2020-10-19 22:23:01,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:23:01,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-19 22:23:01,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:01,838 INFO L225 Difference]: With dead ends: 739 [2020-10-19 22:23:01,839 INFO L226 Difference]: Without dead ends: 296 [2020-10-19 22:23:01,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:23:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-19 22:23:01,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 269. [2020-10-19 22:23:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-19 22:23:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 332 transitions. [2020-10-19 22:23:01,865 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 332 transitions. Word has length 37 [2020-10-19 22:23:01,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:01,866 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 332 transitions. [2020-10-19 22:23:01,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:23:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 332 transitions. [2020-10-19 22:23:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-19 22:23:01,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:01,867 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] [2020-10-19 22:23:02,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3 [2020-10-19 22:23:02,079 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:02,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:02,080 INFO L82 PathProgramCache]: Analyzing trace with hash 753695541, now seen corresponding path program 1 times [2020-10-19 22:23:02,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:23:02,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005087454] [2020-10-19 22:23:02,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2020-10-19 22:23:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:02,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 22:23:02,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:23:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:02,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:23:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:02,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005087454] [2020-10-19 22:23:02,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:02,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2020-10-19 22:23:02,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650340742] [2020-10-19 22:23:02,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 22:23:02,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:23:02,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 22:23:02,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-19 22:23:02,284 INFO L87 Difference]: Start difference. First operand 269 states and 332 transitions. Second operand 13 states. [2020-10-19 22:23:03,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:03,760 INFO L93 Difference]: Finished difference Result 833 states and 974 transitions. [2020-10-19 22:23:03,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-19 22:23:03,761 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-19 22:23:03,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:03,764 INFO L225 Difference]: With dead ends: 833 [2020-10-19 22:23:03,765 INFO L226 Difference]: Without dead ends: 728 [2020-10-19 22:23:03,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2020-10-19 22:23:03,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-10-19 22:23:03,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 252. [2020-10-19 22:23:03,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-19 22:23:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 304 transitions. [2020-10-19 22:23:03,793 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 304 transitions. Word has length 39 [2020-10-19 22:23:03,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:03,794 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 304 transitions. [2020-10-19 22:23:03,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 22:23:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 304 transitions. [2020-10-19 22:23:03,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-19 22:23:03,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:03,795 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] [2020-10-19 22:23:04,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 mathsat -unsat_core_generation=3 [2020-10-19 22:23:04,007 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:04,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:04,007 INFO L82 PathProgramCache]: Analyzing trace with hash -2020075751, now seen corresponding path program 1 times [2020-10-19 22:23:04,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:23:04,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167405869] [2020-10-19 22:23:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2020-10-19 22:23:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:04,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 22:23:04,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:23:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:04,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:23:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:04,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167405869] [2020-10-19 22:23:04,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:04,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-19 22:23:04,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29295794] [2020-10-19 22:23:04,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:23:04,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:23:04,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:23:04,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:23:04,104 INFO L87 Difference]: Start difference. First operand 252 states and 304 transitions. Second operand 8 states. [2020-10-19 22:23:04,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:04,261 INFO L93 Difference]: Finished difference Result 288 states and 338 transitions. [2020-10-19 22:23:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 22:23:04,262 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-19 22:23:04,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:04,264 INFO L225 Difference]: With dead ends: 288 [2020-10-19 22:23:04,264 INFO L226 Difference]: Without dead ends: 286 [2020-10-19 22:23:04,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-19 22:23:04,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-19 22:23:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 252. [2020-10-19 22:23:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-19 22:23:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 299 transitions. [2020-10-19 22:23:04,289 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 299 transitions. Word has length 43 [2020-10-19 22:23:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:04,289 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 299 transitions. [2020-10-19 22:23:04,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:23:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 299 transitions. [2020-10-19 22:23:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 22:23:04,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:04,291 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] [2020-10-19 22:23:04,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 mathsat -unsat_core_generation=3 [2020-10-19 22:23:04,503 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:04,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:04,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1179837250, now seen corresponding path program 1 times [2020-10-19 22:23:04,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:23:04,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264911565] [2020-10-19 22:23:04,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2020-10-19 22:23:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:04,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 22:23:04,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:23:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:05,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:23:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:07,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264911565] [2020-10-19 22:23:07,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:07,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2020-10-19 22:23:07,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984642117] [2020-10-19 22:23:07,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-19 22:23:07,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:23:07,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-19 22:23:07,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2020-10-19 22:23:07,220 INFO L87 Difference]: Start difference. First operand 252 states and 299 transitions. Second operand 24 states. [2020-10-19 22:23:08,295 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-19 22:23:10,429 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-19 22:23:12,404 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-19 22:23:13,272 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-19 22:23:13,887 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-10-19 22:23:15,058 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-19 22:23:17,277 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-19 22:23:18,536 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-19 22:23:19,992 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-19 22:23:21,272 WARN L193 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-19 22:23:22,792 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-10-19 22:23:25,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:25,935 INFO L93 Difference]: Finished difference Result 617 states and 702 transitions. [2020-10-19 22:23:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-19 22:23:25,935 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2020-10-19 22:23:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:25,939 INFO L225 Difference]: With dead ends: 617 [2020-10-19 22:23:25,939 INFO L226 Difference]: Without dead ends: 579 [2020-10-19 22:23:25,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=558, Invalid=2634, Unknown=0, NotChecked=0, Total=3192 [2020-10-19 22:23:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-10-19 22:23:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 286. [2020-10-19 22:23:25,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-10-19 22:23:25,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 339 transitions. [2020-10-19 22:23:25,981 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 339 transitions. Word has length 45 [2020-10-19 22:23:25,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:25,982 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 339 transitions. [2020-10-19 22:23:25,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-19 22:23:25,982 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 339 transitions. [2020-10-19 22:23:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-19 22:23:25,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:25,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:26,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 mathsat -unsat_core_generation=3 [2020-10-19 22:23:26,195 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:26,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:26,195 INFO L82 PathProgramCache]: Analyzing trace with hash 607331149, now seen corresponding path program 1 times [2020-10-19 22:23:26,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:23:26,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689811172] [2020-10-19 22:23:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2020-10-19 22:23:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:26,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 22:23:26,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:23:26,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689811172] [2020-10-19 22:23:26,285 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:23:26,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1879316476] [2020-10-19 22:23:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 22:23:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:26,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 22:23:26,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:23:26,370 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:23:26,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516538906] [2020-10-19 22:23:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:23:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:26,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 22:23:26,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:23:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:26,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:23:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:23:26,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:26,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-10-19 22:23:26,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316983162] [2020-10-19 22:23:26,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 22:23:26,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:23:26,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 22:23:26,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:23:26,497 INFO L87 Difference]: Start difference. First operand 286 states and 339 transitions. Second operand 11 states. [2020-10-19 22:23:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:23:26,905 INFO L93 Difference]: Finished difference Result 648 states and 746 transitions. [2020-10-19 22:23:26,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 22:23:26,906 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-19 22:23:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:23:26,908 INFO L225 Difference]: With dead ends: 648 [2020-10-19 22:23:26,909 INFO L226 Difference]: Without dead ends: 572 [2020-10-19 22:23:26,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-19 22:23:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-10-19 22:23:26,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 260. [2020-10-19 22:23:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-19 22:23:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 309 transitions. [2020-10-19 22:23:26,942 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 309 transitions. Word has length 46 [2020-10-19 22:23:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:23:26,942 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 309 transitions. [2020-10-19 22:23:26,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 22:23:26,942 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 309 transitions. [2020-10-19 22:23:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-19 22:23:26,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:23:26,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:23:27,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 mathsat -unsat_core_generation=3,28 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 22:23:27,555 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:23:27,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:23:27,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1556566417, now seen corresponding path program 1 times [2020-10-19 22:23:27,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:23:27,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695424673] [2020-10-19 22:23:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 30 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with mathsat -unsat_core_generation=3 [2020-10-19 22:23:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:27,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 22:23:27,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:23:27,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695424673] [2020-10-19 22:23:27,629 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:23:27,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [913277365] [2020-10-19 22:23:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 31 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 22:23:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:27,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 22:23:27,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:23:27,782 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:23:27,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549426870] [2020-10-19 22:23:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:23:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:23:27,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 22:23:27,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:23:27,843 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 22:23:27,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:23:27,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 22:23:27,844 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 22:23:27,844 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:23:28,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 mathsat -unsat_core_generation=3,31 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 22:23:28,472 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 22:23:28,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:23:28 BoogieIcfgContainer [2020-10-19 22:23:28,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:23:28,473 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:23:28,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:23:28,474 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:23:28,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:10" (3/4) ... [2020-10-19 22:23:28,478 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:23:28,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:23:28,479 INFO L168 Benchmark]: Toolchain (without parser) took 79398.33 ms. Allocated memory was 41.9 MB in the beginning and 90.7 MB in the end (delta: 48.8 MB). Free memory was 19.6 MB in the beginning and 4.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 63.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:28,480 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 31.5 MB. Free memory was 8.5 MB in the beginning and 8.5 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:23:28,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.32 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 18.7 MB in the beginning and 14.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:28,480 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.01 ms. Allocated memory is still 42.5 MB. Free memory was 14.5 MB in the beginning and 12.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:28,481 INFO L168 Benchmark]: Boogie Preprocessor took 58.53 ms. Allocated memory was 42.5 MB in the beginning and 43.5 MB in the end (delta: 1.0 MB). Free memory was 12.0 MB in the beginning and 27.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:28,481 INFO L168 Benchmark]: RCFGBuilder took 666.15 ms. Allocated memory was 43.5 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Free memory was 26.9 MB in the beginning and 30.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:28,482 INFO L168 Benchmark]: TraceAbstraction took 78196.09 ms. Allocated memory was 46.7 MB in the beginning and 90.7 MB in the end (delta: 44.0 MB). Free memory was 29.7 MB in the beginning and 5.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 68.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:28,482 INFO L168 Benchmark]: Witness Printer took 4.61 ms. Allocated memory is still 90.7 MB. Free memory was 5.7 MB in the beginning and 4.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:23:28,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 31.5 MB. Free memory was 8.5 MB in the beginning and 8.5 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 409.32 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 18.7 MB in the beginning and 14.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 53.01 ms. Allocated memory is still 42.5 MB. Free memory was 14.5 MB in the beginning and 12.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 58.53 ms. Allocated memory was 42.5 MB in the beginning and 43.5 MB in the end (delta: 1.0 MB). Free memory was 12.0 MB in the beginning and 27.1 MB in the end (delta: -15.2 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 666.15 ms. Allocated memory was 43.5 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Free memory was 26.9 MB in the beginning and 30.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 78196.09 ms. Allocated memory was 46.7 MB in the beginning and 90.7 MB in the end (delta: 44.0 MB). Free memory was 29.7 MB in the beginning and 5.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 68.1 MB. Max. memory is 14.3 GB. * Witness Printer took 4.61 ms. Allocated memory is still 90.7 MB. Free memory was 5.7 MB in the beginning and 4.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L219] unsigned int a ; [L220] unsigned int ma = __VERIFIER_nondet_uint(); [L221] signed char ea = __VERIFIER_nondet_char(); [L222] unsigned int b ; [L223] unsigned int mb = __VERIFIER_nondet_uint(); [L224] signed char eb = __VERIFIER_nondet_char(); [L225] unsigned int r_add ; [L226] unsigned int zero ; [L227] int sa ; [L228] int sb ; [L229] int tmp ; [L230] int tmp___0 ; [L231] int tmp___1 ; [L232] int tmp___2 ; [L233] int tmp___3 ; [L234] int tmp___4 ; [L235] int tmp___5 ; [L236] int tmp___6 ; [L237] int tmp___7 ; [L238] int tmp___8 ; [L239] int tmp___9 ; [L240] int __retres23 ; [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND TRUE ! m [L23] __retres4 = 0U [L73] return (__retres4); [L244] zero = base2flt(0, 0) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND FALSE !(m >= 1U << 25U) [L69] m = m & ~ (1U << 24U) [L70] res = m | ((unsigned int ) (e + 128) << 24U) [L71] __retres4 = res [L73] return (__retres4); [L245] a = base2flt(ma, ea) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND FALSE !(m >= 1U << 25U) [L69] m = m & ~ (1U << 24U) [L70] res = m | ((unsigned int ) (e + 128) << 24U) [L71] __retres4 = res [L73] return (__retres4); [L246] b = base2flt(mb, eb) [L248] COND FALSE !(a < zero) [L251] COND TRUE a > zero [L252] tmp = 1 [L256] sa = tmp [L258] COND FALSE !(b < zero) [L261] COND TRUE b > zero [L262] tmp___0 = 1 [L266] sb = tmp___0 [L77] unsigned int res ; [L78] unsigned int ma ; [L79] unsigned int mb ; [L80] unsigned int delta ; [L81] int ea ; [L82] int eb ; [L83] unsigned int tmp ; [L84] unsigned int __retres10 ; [L87] COND FALSE !(a < b) [L94] COND FALSE !(! b) [L101] ma = a & ((1U << 24U) - 1U) [L102] ea = (int )(a >> 24U) - 128 [L103] ma = ma | (1U << 24U) [L104] mb = b & ((1U << 24U) - 1U) [L105] eb = (int )(b >> 24U) - 128 [L106] mb = mb | (1U << 24U) [L9] COND FALSE !(!(cond)) [L108] delta = ea - eb [L109] COND FALSE !(!(delta < sizeof(mb) * 8)) [L110] mb = mb >> delta [L112] COND FALSE !(! mb) [L118] ma = ma + mb [L119] COND TRUE ma & (1U << 25U) [L120] COND FALSE !(ea == 127) [L126] ea = ea + 1 [L127] ma = ma >> 1U [L9] COND FALSE !(!(cond)) [L133] ma = ma & ((1U << 24U) - 1U) [L134] res = ma | ((unsigned int )(ea + 128) << 24U) [L136] __retres10 = res [L138] return (__retres10); [L269] r_add = addflt(a, b) [L271] COND TRUE sa > 0 [L272] COND TRUE sb > 0 [L273] COND TRUE r_add < a [L274] tmp___2 = -1 [L9] COND TRUE !(cond) [L3] __assert_fail("0", "soft_float_1-2a.c.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 99 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 78.1s, OverallIterations: 26, TraceHistogramMax: 1, AutomataDifference: 57.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3856 SDtfs, 10904 SDslu, 18925 SDs, 0 SdLazy, 4796 SolverSat, 363 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 15.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1935 GetRequests, 1570 SyntacticMatches, 15 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 1566 ImplicationChecksByTransitivity, 48.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=515occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 25 MinimizatonAttempts, 5627 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 840 NumberOfCodeBlocks, 840 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1630 ConstructedInterpolants, 65 QuantifiedInterpolants, 183535 SizeOfPredicates, 127 NumberOfNonLiveVariables, 2108 ConjunctsInSsa, 161 ConjunctsInUnsatCore, 50 InterpolantComputations, 50 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...