./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 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_1.5.800.v20200727-1323.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_5a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:05:25,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:05:25,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:05:25,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:05:25,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:05:25,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:05:25,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:05:25,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:05:25,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:05:25,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:05:25,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:05:25,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:05:25,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:05:25,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:05:25,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:05:25,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:05:25,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:05:25,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:05:25,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:05:25,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:05:25,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:05:25,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:05:25,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:05:25,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:05:25,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:05:25,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:05:25,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:05:25,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:05:25,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:05:25,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:05:25,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:05:25,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:05:25,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:05:25,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:05:25,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:05:25,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:05:25,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:05:25,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:05:25,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:05:25,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:05:25,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:05:25,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-16 09:05:25,139 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:05:25,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:05:25,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:05:25,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:05:25,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 09:05:25,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 09:05:25,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:05:25,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:05:25,141 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:05:25,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:05:25,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 09:05:25,142 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:05:25,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:05:25,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 09:05:25,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:05:25,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 09:05:25,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 09:05:25,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 09:05:25,143 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-16 09:05:25,143 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 09:05:25,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:05:25,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:05:25,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 09:05:25,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:05:25,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:05:25,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 09:05:25,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:05:25,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:05:25,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 09:05:25,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 09:05:25,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:05:25,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 09:05:25,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 09:05:25,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:05:25,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2021-12-16 09:05:25,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:05:25,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:05:25,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:05:25,395 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:05:25,396 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:05:25,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2021-12-16 09:05:25,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c90f8ca79/3b05bed262bd4eada66c555f334ff76c/FLAG127e0b44d [2021-12-16 09:05:25,847 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:05:25,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2021-12-16 09:05:25,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c90f8ca79/3b05bed262bd4eada66c555f334ff76c/FLAG127e0b44d [2021-12-16 09:05:26,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c90f8ca79/3b05bed262bd4eada66c555f334ff76c [2021-12-16 09:05:26,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:05:26,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:05:26,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:05:26,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:05:26,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:05:26,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:05:26" (1/1) ... [2021-12-16 09:05:26,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78cb832b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26, skipping insertion in model container [2021-12-16 09:05:26,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:05:26" (1/1) ... [2021-12-16 09:05:26,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:05:26,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:05:26,414 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2021-12-16 09:05:26,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:05:26,490 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:05:26,511 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2021-12-16 09:05:26,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:05:26,564 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:05:26,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26 WrapperNode [2021-12-16 09:05:26,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:05:26,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:05:26,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:05:26,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:05:26,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26" (1/1) ... [2021-12-16 09:05:26,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26" (1/1) ... [2021-12-16 09:05:26,617 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 122 [2021-12-16 09:05:26,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:05:26,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:05:26,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:05:26,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:05:26,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26" (1/1) ... [2021-12-16 09:05:26,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26" (1/1) ... [2021-12-16 09:05:26,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26" (1/1) ... [2021-12-16 09:05:26,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26" (1/1) ... [2021-12-16 09:05:26,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26" (1/1) ... [2021-12-16 09:05:26,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26" (1/1) ... [2021-12-16 09:05:26,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26" (1/1) ... [2021-12-16 09:05:26,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:05:26,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:05:26,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:05:26,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:05:26,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26" (1/1) ... [2021-12-16 09:05:26,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:05:26,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:26,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 09:05:26,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 09:05:26,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 09:05:26,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 09:05:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-16 09:05:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-16 09:05:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:05:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:05:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 09:05:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 09:05:26,816 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:05:26,817 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:05:27,067 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:05:27,078 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:05:27,079 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 09:05:27,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:05:27 BoogieIcfgContainer [2021-12-16 09:05:27,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:05:27,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 09:05:27,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 09:05:27,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 09:05:27,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:05:26" (1/3) ... [2021-12-16 09:05:27,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd01488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:05:27, skipping insertion in model container [2021-12-16 09:05:27,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:26" (2/3) ... [2021-12-16 09:05:27,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd01488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:05:27, skipping insertion in model container [2021-12-16 09:05:27,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:05:27" (3/3) ... [2021-12-16 09:05:27,087 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2021-12-16 09:05:27,093 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 09:05:27,094 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-12-16 09:05:27,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 09:05:27,142 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 09:05:27,142 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-12-16 09:05:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 76 states have internal predecessors, (98), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-16 09:05:27,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 09:05:27,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:27,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:27,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:27,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash 598641474, now seen corresponding path program 1 times [2021-12-16 09:05:27,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:27,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975265248] [2021-12-16 09:05:27,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:27,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:27,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:27,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975265248] [2021-12-16 09:05:27,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975265248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:27,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:27,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:05:27,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414589361] [2021-12-16 09:05:27,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:27,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 09:05:27,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 09:05:27,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 09:05:27,311 INFO L87 Difference]: Start difference. First operand has 83 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 76 states have internal predecessors, (98), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:27,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:27,342 INFO L93 Difference]: Finished difference Result 161 states and 217 transitions. [2021-12-16 09:05:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 09:05:27,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 09:05:27,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:27,353 INFO L225 Difference]: With dead ends: 161 [2021-12-16 09:05:27,354 INFO L226 Difference]: Without dead ends: 63 [2021-12-16 09:05:27,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 09:05:27,359 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:27,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:27,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-16 09:05:27,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-12-16 09:05:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.5) internal successors, (66), 57 states have internal predecessors, (66), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:27,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2021-12-16 09:05:27,394 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 9 [2021-12-16 09:05:27,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:27,394 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2021-12-16 09:05:27,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2021-12-16 09:05:27,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 09:05:27,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:27,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:27,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 09:05:27,403 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:27,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash 597700208, now seen corresponding path program 1 times [2021-12-16 09:05:27,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:27,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116929962] [2021-12-16 09:05:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:27,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:27,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:27,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116929962] [2021-12-16 09:05:27,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116929962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:27,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:27,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:05:27,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935746990] [2021-12-16 09:05:27,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:27,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:05:27,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:27,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:05:27,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:05:27,453 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:27,520 INFO L93 Difference]: Finished difference Result 163 states and 201 transitions. [2021-12-16 09:05:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:05:27,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 09:05:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:27,524 INFO L225 Difference]: With dead ends: 163 [2021-12-16 09:05:27,524 INFO L226 Difference]: Without dead ends: 103 [2021-12-16 09:05:27,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:27,526 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 56 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:27,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 185 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-16 09:05:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2021-12-16 09:05:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 74 states have (on average 1.472972972972973) internal successors, (109), 87 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2021-12-16 09:05:27,551 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 9 [2021-12-16 09:05:27,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:27,552 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2021-12-16 09:05:27,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2021-12-16 09:05:27,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 09:05:27,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:27,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:27,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 09:05:27,557 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:27,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash -501328777, now seen corresponding path program 1 times [2021-12-16 09:05:27,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:27,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387163806] [2021-12-16 09:05:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:27,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:27,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:27,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387163806] [2021-12-16 09:05:27,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387163806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:27,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:27,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:05:27,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965425652] [2021-12-16 09:05:27,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:27,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:05:27,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:27,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:05:27,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:27,631 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:27,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:27,773 INFO L93 Difference]: Finished difference Result 113 states and 134 transitions. [2021-12-16 09:05:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:27,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-16 09:05:27,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:27,775 INFO L225 Difference]: With dead ends: 113 [2021-12-16 09:05:27,775 INFO L226 Difference]: Without dead ends: 111 [2021-12-16 09:05:27,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:05:27,777 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 72 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:27,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 251 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:27,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-16 09:05:27,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2021-12-16 09:05:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 89 states have internal predecessors, (110), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2021-12-16 09:05:27,801 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 13 [2021-12-16 09:05:27,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:27,801 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2021-12-16 09:05:27,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:27,801 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2021-12-16 09:05:27,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 09:05:27,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:27,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:27,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 09:05:27,808 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:27,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:27,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1638677198, now seen corresponding path program 1 times [2021-12-16 09:05:27,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:27,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913016404] [2021-12-16 09:05:27,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:27,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:27,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:27,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913016404] [2021-12-16 09:05:27,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913016404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:27,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:27,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:05:27,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164240176] [2021-12-16 09:05:27,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:27,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:05:27,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:27,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:05:27,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:27,848 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:27,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:27,915 INFO L93 Difference]: Finished difference Result 210 states and 258 transitions. [2021-12-16 09:05:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:27,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-16 09:05:27,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:27,919 INFO L225 Difference]: With dead ends: 210 [2021-12-16 09:05:27,921 INFO L226 Difference]: Without dead ends: 117 [2021-12-16 09:05:27,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:05:27,925 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 94 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:27,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 199 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:27,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-16 09:05:27,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 100. [2021-12-16 09:05:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 80 states have (on average 1.425) internal successors, (114), 93 states have internal predecessors, (114), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 122 transitions. [2021-12-16 09:05:27,949 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 122 transitions. Word has length 14 [2021-12-16 09:05:27,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:27,949 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 122 transitions. [2021-12-16 09:05:27,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:27,950 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 122 transitions. [2021-12-16 09:05:27,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 09:05:27,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:27,951 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:27,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 09:05:27,952 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:27,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:27,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1935698782, now seen corresponding path program 1 times [2021-12-16 09:05:27,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:27,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199421240] [2021-12-16 09:05:27,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:27,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-16 09:05:27,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:27,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199421240] [2021-12-16 09:05:27,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199421240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:27,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:27,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:05:27,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183645721] [2021-12-16 09:05:27,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:27,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:05:27,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:27,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:05:27,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:05:27,995 INFO L87 Difference]: Start difference. First operand 100 states and 122 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:28,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:28,020 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2021-12-16 09:05:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:05:28,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-16 09:05:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:28,023 INFO L225 Difference]: With dead ends: 106 [2021-12-16 09:05:28,023 INFO L226 Difference]: Without dead ends: 105 [2021-12-16 09:05:28,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:05:28,028 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 4 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:28,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 137 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-16 09:05:28,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 98. [2021-12-16 09:05:28,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 79 states have (on average 1.4050632911392404) internal successors, (111), 91 states have internal predecessors, (111), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:28,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2021-12-16 09:05:28,043 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 15 [2021-12-16 09:05:28,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:28,043 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2021-12-16 09:05:28,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:28,044 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2021-12-16 09:05:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 09:05:28,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:28,045 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:28,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 09:05:28,045 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:28,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:28,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1935700960, now seen corresponding path program 1 times [2021-12-16 09:05:28,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:28,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351792595] [2021-12-16 09:05:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:28,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:28,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:28,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351792595] [2021-12-16 09:05:28,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351792595] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:28,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291302044] [2021-12-16 09:05:28,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:28,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:28,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:28,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:28,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 09:05:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 09:05:28,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:28,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:05:28,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291302044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:28,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 09:05:28,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-12-16 09:05:28,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17573640] [2021-12-16 09:05:28,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:28,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:05:28,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:28,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:05:28,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:05:28,214 INFO L87 Difference]: Start difference. First operand 98 states and 119 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:28,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:28,245 INFO L93 Difference]: Finished difference Result 118 states and 146 transitions. [2021-12-16 09:05:28,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:05:28,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-16 09:05:28,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:28,247 INFO L225 Difference]: With dead ends: 118 [2021-12-16 09:05:28,247 INFO L226 Difference]: Without dead ends: 117 [2021-12-16 09:05:28,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:05:28,248 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 11 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:28,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 152 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:28,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-16 09:05:28,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 100. [2021-12-16 09:05:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 81 states have (on average 1.3950617283950617) internal successors, (113), 93 states have internal predecessors, (113), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2021-12-16 09:05:28,256 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 15 [2021-12-16 09:05:28,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:28,256 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2021-12-16 09:05:28,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2021-12-16 09:05:28,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 09:05:28,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:28,258 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:28,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:28,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-16 09:05:28,481 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:28,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:28,482 INFO L85 PathProgramCache]: Analyzing trace with hash -481426080, now seen corresponding path program 1 times [2021-12-16 09:05:28,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:28,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152353837] [2021-12-16 09:05:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:28,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 09:05:28,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:28,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152353837] [2021-12-16 09:05:28,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152353837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:28,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:28,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:05:28,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346103105] [2021-12-16 09:05:28,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:28,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:05:28,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:28,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:05:28,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:05:28,543 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:28,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:28,571 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2021-12-16 09:05:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:05:28,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-16 09:05:28,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:28,573 INFO L225 Difference]: With dead ends: 121 [2021-12-16 09:05:28,573 INFO L226 Difference]: Without dead ends: 119 [2021-12-16 09:05:28,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:05:28,575 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 13 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:28,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 141 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-16 09:05:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 97. [2021-12-16 09:05:28,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 79 states have (on average 1.379746835443038) internal successors, (109), 90 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2021-12-16 09:05:28,584 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 19 [2021-12-16 09:05:28,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:28,584 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2021-12-16 09:05:28,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2021-12-16 09:05:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 09:05:28,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:28,586 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:28,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 09:05:28,586 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:28,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:28,587 INFO L85 PathProgramCache]: Analyzing trace with hash 976326642, now seen corresponding path program 1 times [2021-12-16 09:05:28,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:28,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017628388] [2021-12-16 09:05:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:28,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 09:05:28,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:28,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017628388] [2021-12-16 09:05:28,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017628388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:28,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:28,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:05:28,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582124668] [2021-12-16 09:05:28,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:28,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:05:28,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:28,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:05:28,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:28,636 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:05:28,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:28,693 INFO L93 Difference]: Finished difference Result 141 states and 171 transitions. [2021-12-16 09:05:28,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:28,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-12-16 09:05:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:28,700 INFO L225 Difference]: With dead ends: 141 [2021-12-16 09:05:28,700 INFO L226 Difference]: Without dead ends: 139 [2021-12-16 09:05:28,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:05:28,701 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 89 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:28,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 198 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:28,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-12-16 09:05:28,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2021-12-16 09:05:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 100 states have (on average 1.38) internal successors, (138), 111 states have internal predecessors, (138), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2021-12-16 09:05:28,721 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 23 [2021-12-16 09:05:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:28,721 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2021-12-16 09:05:28,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:05:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2021-12-16 09:05:28,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-16 09:05:28,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:28,727 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:28,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 09:05:28,727 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:28,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1460484966, now seen corresponding path program 1 times [2021-12-16 09:05:28,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:28,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786314034] [2021-12-16 09:05:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:28,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 09:05:28,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:28,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786314034] [2021-12-16 09:05:28,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786314034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:28,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:28,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:05:28,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205766512] [2021-12-16 09:05:28,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:28,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:05:28,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:28,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:05:28,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:28,805 INFO L87 Difference]: Start difference. First operand 119 states and 146 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:05:28,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:28,858 INFO L93 Difference]: Finished difference Result 135 states and 162 transitions. [2021-12-16 09:05:28,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:28,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-12-16 09:05:28,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:28,862 INFO L225 Difference]: With dead ends: 135 [2021-12-16 09:05:28,862 INFO L226 Difference]: Without dead ends: 133 [2021-12-16 09:05:28,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:05:28,865 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 78 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:28,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 200 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:28,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-16 09:05:28,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 116. [2021-12-16 09:05:28,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 97 states have (on average 1.3711340206185567) internal successors, (133), 108 states have internal predecessors, (133), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 141 transitions. [2021-12-16 09:05:28,880 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 141 transitions. Word has length 25 [2021-12-16 09:05:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:28,881 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 141 transitions. [2021-12-16 09:05:28,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:05:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 141 transitions. [2021-12-16 09:05:28,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-16 09:05:28,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:28,885 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:28,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 09:05:28,886 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:28,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:28,889 INFO L85 PathProgramCache]: Analyzing trace with hash 18081416, now seen corresponding path program 1 times [2021-12-16 09:05:28,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:28,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459967850] [2021-12-16 09:05:28,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:28,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 09:05:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 09:05:28,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:28,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459967850] [2021-12-16 09:05:28,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459967850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:28,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:28,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:05:28,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555072741] [2021-12-16 09:05:28,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:28,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:05:28,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:28,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:05:28,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:28,975 INFO L87 Difference]: Start difference. First operand 116 states and 141 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 09:05:29,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:29,033 INFO L93 Difference]: Finished difference Result 130 states and 158 transitions. [2021-12-16 09:05:29,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:29,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2021-12-16 09:05:29,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:29,035 INFO L225 Difference]: With dead ends: 130 [2021-12-16 09:05:29,035 INFO L226 Difference]: Without dead ends: 128 [2021-12-16 09:05:29,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:05:29,036 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 87 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:29,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 191 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-16 09:05:29,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 110. [2021-12-16 09:05:29,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 93 states have (on average 1.3440860215053763) internal successors, (125), 102 states have internal predecessors, (125), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2021-12-16 09:05:29,047 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 30 [2021-12-16 09:05:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:29,047 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2021-12-16 09:05:29,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 09:05:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2021-12-16 09:05:29,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 09:05:29,050 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:29,051 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:29,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 09:05:29,054 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:29,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:29,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1083821488, now seen corresponding path program 1 times [2021-12-16 09:05:29,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:29,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233219584] [2021-12-16 09:05:29,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:29,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:29,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 09:05:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 09:05:29,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:29,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233219584] [2021-12-16 09:05:29,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233219584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:29,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:29,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:05:29,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214818562] [2021-12-16 09:05:29,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:29,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:05:29,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:29,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:05:29,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:05:29,129 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 09:05:29,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:29,174 INFO L93 Difference]: Finished difference Result 124 states and 149 transitions. [2021-12-16 09:05:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:29,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2021-12-16 09:05:29,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:29,175 INFO L225 Difference]: With dead ends: 124 [2021-12-16 09:05:29,175 INFO L226 Difference]: Without dead ends: 122 [2021-12-16 09:05:29,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:05:29,176 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 76 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:29,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 191 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:29,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-16 09:05:29,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 105. [2021-12-16 09:05:29,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 97 states have internal predecessors, (120), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 128 transitions. [2021-12-16 09:05:29,182 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 128 transitions. Word has length 32 [2021-12-16 09:05:29,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:29,182 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 128 transitions. [2021-12-16 09:05:29,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-16 09:05:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 128 transitions. [2021-12-16 09:05:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 09:05:29,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:29,183 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:29,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 09:05:29,184 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:29,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1149948741, now seen corresponding path program 1 times [2021-12-16 09:05:29,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:29,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784820066] [2021-12-16 09:05:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:29,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:29,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 09:05:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:29,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 09:05:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 09:05:29,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:29,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784820066] [2021-12-16 09:05:29,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784820066] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:29,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223847961] [2021-12-16 09:05:29,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:29,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:29,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:29,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:29,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 09:05:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:29,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-16 09:05:29,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 09:05:29,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-16 09:05:29,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223847961] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:29,607 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:29,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 10, 8] total 18 [2021-12-16 09:05:29,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255710366] [2021-12-16 09:05:29,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:29,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 09:05:29,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 09:05:29,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-12-16 09:05:29,608 INFO L87 Difference]: Start difference. First operand 105 states and 128 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-16 09:05:29,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:29,933 INFO L93 Difference]: Finished difference Result 290 states and 352 transitions. [2021-12-16 09:05:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 09:05:29,935 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 36 [2021-12-16 09:05:29,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:29,936 INFO L225 Difference]: With dead ends: 290 [2021-12-16 09:05:29,936 INFO L226 Difference]: Without dead ends: 152 [2021-12-16 09:05:29,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2021-12-16 09:05:29,937 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 75 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:29,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 739 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:05:29,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-16 09:05:29,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 102. [2021-12-16 09:05:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 86 states have (on average 1.2790697674418605) internal successors, (110), 93 states have internal predecessors, (110), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2021-12-16 09:05:29,944 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 36 [2021-12-16 09:05:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:29,944 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2021-12-16 09:05:29,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-16 09:05:29,944 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2021-12-16 09:05:29,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-16 09:05:29,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:29,945 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:29,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:30,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-16 09:05:30,160 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:30,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:30,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1115202185, now seen corresponding path program 1 times [2021-12-16 09:05:30,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:30,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548837335] [2021-12-16 09:05:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:30,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:30,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:30,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:30,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 09:05:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:30,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 09:05:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 09:05:30,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:30,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548837335] [2021-12-16 09:05:30,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548837335] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:30,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95304820] [2021-12-16 09:05:30,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:30,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:30,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:30,256 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:30,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 09:05:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:30,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-16 09:05:30,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-16 09:05:30,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:05:30,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95304820] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:30,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:30,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 14 [2021-12-16 09:05:30,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513256344] [2021-12-16 09:05:30,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:30,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 09:05:30,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:30,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 09:05:30,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-16 09:05:30,642 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-16 09:05:30,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:30,965 INFO L93 Difference]: Finished difference Result 245 states and 281 transitions. [2021-12-16 09:05:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 09:05:30,965 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 49 [2021-12-16 09:05:30,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:30,966 INFO L225 Difference]: With dead ends: 245 [2021-12-16 09:05:30,966 INFO L226 Difference]: Without dead ends: 167 [2021-12-16 09:05:30,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2021-12-16 09:05:30,967 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 201 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:30,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 400 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-16 09:05:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 102. [2021-12-16 09:05:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 86 states have (on average 1.244186046511628) internal successors, (107), 93 states have internal predecessors, (107), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:30,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2021-12-16 09:05:30,974 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 49 [2021-12-16 09:05:30,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:30,974 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2021-12-16 09:05:30,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 12 states have internal predecessors, (60), 4 states have call successors, (10), 1 states have call predecessors, (10), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-16 09:05:30,975 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2021-12-16 09:05:30,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-16 09:05:30,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:30,975 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:31,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:31,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:31,192 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:31,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1579011142, now seen corresponding path program 1 times [2021-12-16 09:05:31,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:31,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238978617] [2021-12-16 09:05:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:31,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:31,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:31,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-16 09:05:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:31,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 09:05:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:31,259 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 09:05:31,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:31,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238978617] [2021-12-16 09:05:31,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238978617] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:31,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667002382] [2021-12-16 09:05:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:31,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:31,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:31,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:31,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 09:05:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:31,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 09:05:31,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-16 09:05:31,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 09:05:31,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667002382] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:31,592 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:31,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2021-12-16 09:05:31,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152745096] [2021-12-16 09:05:31,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:31,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 09:05:31,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:31,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 09:05:31,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-16 09:05:31,593 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 09:05:31,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:31,751 INFO L93 Difference]: Finished difference Result 389 states and 441 transitions. [2021-12-16 09:05:31,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 09:05:31,751 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2021-12-16 09:05:31,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:31,752 INFO L225 Difference]: With dead ends: 389 [2021-12-16 09:05:31,753 INFO L226 Difference]: Without dead ends: 312 [2021-12-16 09:05:31,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2021-12-16 09:05:31,754 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 145 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:31,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 353 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:31,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-12-16 09:05:31,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 122. [2021-12-16 09:05:31,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 113 states have internal predecessors, (131), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 139 transitions. [2021-12-16 09:05:31,763 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 139 transitions. Word has length 55 [2021-12-16 09:05:31,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:31,763 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 139 transitions. [2021-12-16 09:05:31,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 09:05:31,764 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 139 transitions. [2021-12-16 09:05:31,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-16 09:05:31,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:31,765 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:31,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:31,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:31,979 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:31,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1107207327, now seen corresponding path program 1 times [2021-12-16 09:05:31,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:31,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288686667] [2021-12-16 09:05:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:31,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:32,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:32,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 09:05:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:32,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 09:05:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 09:05:32,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:32,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288686667] [2021-12-16 09:05:32,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288686667] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:32,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321027706] [2021-12-16 09:05:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:32,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:32,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:32,078 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:32,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 09:05:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:32,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-16 09:05:32,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 09:05:32,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-16 09:05:32,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321027706] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:32,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:05:32,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 8] total 16 [2021-12-16 09:05:32,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822307018] [2021-12-16 09:05:32,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:32,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 09:05:32,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:32,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 09:05:32,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-12-16 09:05:32,403 INFO L87 Difference]: Start difference. First operand 122 states and 139 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:32,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:32,453 INFO L93 Difference]: Finished difference Result 183 states and 201 transitions. [2021-12-16 09:05:32,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:32,453 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2021-12-16 09:05:32,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:32,454 INFO L225 Difference]: With dead ends: 183 [2021-12-16 09:05:32,455 INFO L226 Difference]: Without dead ends: 157 [2021-12-16 09:05:32,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-12-16 09:05:32,456 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 29 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:32,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 307 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:32,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-16 09:05:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 128. [2021-12-16 09:05:32,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 111 states have (on average 1.2252252252252251) internal successors, (136), 118 states have internal predecessors, (136), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-16 09:05:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 145 transitions. [2021-12-16 09:05:32,465 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 145 transitions. Word has length 56 [2021-12-16 09:05:32,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:32,465 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 145 transitions. [2021-12-16 09:05:32,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 145 transitions. [2021-12-16 09:05:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-16 09:05:32,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:32,466 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:32,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:32,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-16 09:05:32,680 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash 667800035, now seen corresponding path program 1 times [2021-12-16 09:05:32,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:32,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038826867] [2021-12-16 09:05:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:32,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:32,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 09:05:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:32,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 09:05:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 09:05:32,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:32,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038826867] [2021-12-16 09:05:32,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038826867] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:32,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746054217] [2021-12-16 09:05:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:32,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:32,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:32,761 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:32,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 09:05:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:32,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-16 09:05:32,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 09:05:32,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-16 09:05:33,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746054217] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:33,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:05:33,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 9] total 18 [2021-12-16 09:05:33,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279894792] [2021-12-16 09:05:33,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:33,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 09:05:33,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:33,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 09:05:33,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-16 09:05:33,094 INFO L87 Difference]: Start difference. First operand 128 states and 145 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:33,173 INFO L93 Difference]: Finished difference Result 158 states and 175 transitions. [2021-12-16 09:05:33,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 09:05:33,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2021-12-16 09:05:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:33,175 INFO L225 Difference]: With dead ends: 158 [2021-12-16 09:05:33,175 INFO L226 Difference]: Without dead ends: 125 [2021-12-16 09:05:33,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-12-16 09:05:33,176 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 5 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:33,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 360 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:33,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-16 09:05:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2021-12-16 09:05:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 113 states have internal predecessors, (129), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 09:05:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 137 transitions. [2021-12-16 09:05:33,186 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 137 transitions. Word has length 56 [2021-12-16 09:05:33,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:33,186 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 137 transitions. [2021-12-16 09:05:33,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 137 transitions. [2021-12-16 09:05:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-16 09:05:33,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:33,188 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:33,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:33,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-16 09:05:33,412 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:33,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash -95677998, now seen corresponding path program 2 times [2021-12-16 09:05:33,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:33,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088374072] [2021-12-16 09:05:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:33,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:33,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:33,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 09:05:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:33,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 09:05:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:05:33,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:33,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088374072] [2021-12-16 09:05:33,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088374072] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:33,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805631739] [2021-12-16 09:05:33,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:05:33,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:33,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:33,515 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:33,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 09:05:33,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 09:05:33,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:05:33,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 09:05:33,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-16 09:05:33,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:05:33,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805631739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:33,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 09:05:33,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2021-12-16 09:05:33,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753315421] [2021-12-16 09:05:33,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:33,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 09:05:33,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:33,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 09:05:33,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-16 09:05:33,688 INFO L87 Difference]: Start difference. First operand 122 states and 137 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:33,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:33,773 INFO L93 Difference]: Finished difference Result 180 states and 195 transitions. [2021-12-16 09:05:33,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 09:05:33,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2021-12-16 09:05:33,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:33,775 INFO L225 Difference]: With dead ends: 180 [2021-12-16 09:05:33,775 INFO L226 Difference]: Without dead ends: 178 [2021-12-16 09:05:33,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-16 09:05:33,775 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 88 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:33,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 466 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-12-16 09:05:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 139. [2021-12-16 09:05:33,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 122 states have (on average 1.2131147540983607) internal successors, (148), 129 states have internal predecessors, (148), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-16 09:05:33,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 157 transitions. [2021-12-16 09:05:33,783 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 157 transitions. Word has length 60 [2021-12-16 09:05:33,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:33,783 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 157 transitions. [2021-12-16 09:05:33,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:33,783 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 157 transitions. [2021-12-16 09:05:33,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-16 09:05:33,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:33,784 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:33,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:33,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:33,998 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash -95618416, now seen corresponding path program 1 times [2021-12-16 09:05:33,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:33,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886701660] [2021-12-16 09:05:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:33,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:34,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 09:05:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:34,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 09:05:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:05:34,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:34,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886701660] [2021-12-16 09:05:34,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886701660] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:34,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720894087] [2021-12-16 09:05:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:34,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:34,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:34,081 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:34,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 09:05:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:34,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 09:05:34,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:34,235 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 09:05:34,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:05:34,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720894087] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:34,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:34,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2021-12-16 09:05:34,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707993565] [2021-12-16 09:05:34,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:34,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 09:05:34,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:34,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 09:05:34,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-12-16 09:05:34,463 INFO L87 Difference]: Start difference. First operand 139 states and 157 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 09:05:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:34,690 INFO L93 Difference]: Finished difference Result 336 states and 380 transitions. [2021-12-16 09:05:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 09:05:34,691 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2021-12-16 09:05:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:34,692 INFO L225 Difference]: With dead ends: 336 [2021-12-16 09:05:34,692 INFO L226 Difference]: Without dead ends: 236 [2021-12-16 09:05:34,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=186, Unknown=0, NotChecked=0, Total=306 [2021-12-16 09:05:34,693 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 126 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:34,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 321 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-12-16 09:05:34,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 139. [2021-12-16 09:05:34,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 122 states have (on average 1.180327868852459) internal successors, (144), 129 states have internal predecessors, (144), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-16 09:05:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2021-12-16 09:05:34,701 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 60 [2021-12-16 09:05:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:34,701 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2021-12-16 09:05:34,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 09:05:34,702 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2021-12-16 09:05:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 09:05:34,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:34,703 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:34,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:34,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-16 09:05:34,928 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:34,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:34,928 INFO L85 PathProgramCache]: Analyzing trace with hash 536939497, now seen corresponding path program 1 times [2021-12-16 09:05:34,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:34,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459729648] [2021-12-16 09:05:34,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:34,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:35,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 09:05:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:35,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 09:05:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 97 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:05:35,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:35,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459729648] [2021-12-16 09:05:35,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459729648] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:35,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336439907] [2021-12-16 09:05:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:35,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:35,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:35,055 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:35,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 09:05:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:35,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 09:05:35,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 26 proven. 87 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 09:05:35,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 97 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:05:35,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336439907] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:35,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:35,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2021-12-16 09:05:35,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701436332] [2021-12-16 09:05:35,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:35,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-16 09:05:35,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:35,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-16 09:05:35,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=420, Unknown=0, NotChecked=0, Total=650 [2021-12-16 09:05:35,632 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 09:05:35,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:35,862 INFO L93 Difference]: Finished difference Result 651 states and 723 transitions. [2021-12-16 09:05:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 09:05:35,863 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2021-12-16 09:05:35,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:35,865 INFO L225 Difference]: With dead ends: 651 [2021-12-16 09:05:35,865 INFO L226 Difference]: Without dead ends: 557 [2021-12-16 09:05:35,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=297, Invalid=515, Unknown=0, NotChecked=0, Total=812 [2021-12-16 09:05:35,866 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 339 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:35,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 453 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:35,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-12-16 09:05:35,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 179. [2021-12-16 09:05:35,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 162 states have (on average 1.1851851851851851) internal successors, (192), 169 states have internal predecessors, (192), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-16 09:05:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 201 transitions. [2021-12-16 09:05:35,883 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 201 transitions. Word has length 79 [2021-12-16 09:05:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:35,884 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 201 transitions. [2021-12-16 09:05:35,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 09:05:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 201 transitions. [2021-12-16 09:05:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-16 09:05:35,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:35,889 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:35,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:36,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:36,113 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash -732586736, now seen corresponding path program 2 times [2021-12-16 09:05:36,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:36,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555114746] [2021-12-16 09:05:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:36,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:36,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:36,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:36,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 09:05:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:36,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 09:05:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:05:36,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:36,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555114746] [2021-12-16 09:05:36,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555114746] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:36,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664943184] [2021-12-16 09:05:36,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:05:36,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:36,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:36,254 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:36,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 09:05:36,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 09:05:36,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:05:36,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 09:05:36,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-16 09:05:36,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:05:36,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664943184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:36,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 09:05:36,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2021-12-16 09:05:36,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319359741] [2021-12-16 09:05:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:36,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 09:05:36,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:36,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 09:05:36,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-12-16 09:05:36,516 INFO L87 Difference]: Start difference. First operand 179 states and 201 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:36,642 INFO L93 Difference]: Finished difference Result 218 states and 237 transitions. [2021-12-16 09:05:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 09:05:36,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 80 [2021-12-16 09:05:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:36,644 INFO L225 Difference]: With dead ends: 218 [2021-12-16 09:05:36,644 INFO L226 Difference]: Without dead ends: 217 [2021-12-16 09:05:36,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-12-16 09:05:36,645 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 87 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:36,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 461 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-16 09:05:36,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 179. [2021-12-16 09:05:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 162 states have (on average 1.1790123456790123) internal successors, (191), 169 states have internal predecessors, (191), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-16 09:05:36,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 200 transitions. [2021-12-16 09:05:36,658 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 200 transitions. Word has length 80 [2021-12-16 09:05:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:36,658 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 200 transitions. [2021-12-16 09:05:36,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:05:36,658 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 200 transitions. [2021-12-16 09:05:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-16 09:05:36,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:36,666 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:36,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:36,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:36,871 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash 301529620, now seen corresponding path program 1 times [2021-12-16 09:05:36,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:36,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011623351] [2021-12-16 09:05:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:36,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:36,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:37,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 09:05:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 09:05:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:05:37,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:37,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011623351] [2021-12-16 09:05:37,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011623351] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:37,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165665303] [2021-12-16 09:05:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:37,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:37,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:37,013 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:37,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 09:05:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:37,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-16 09:05:37,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 26 proven. 75 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 09:05:37,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 4 proven. 85 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:05:37,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165665303] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:37,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:37,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2021-12-16 09:05:37,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590990945] [2021-12-16 09:05:37,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:37,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-16 09:05:37,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:37,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-16 09:05:37,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=409, Unknown=0, NotChecked=0, Total=600 [2021-12-16 09:05:37,700 INFO L87 Difference]: Start difference. First operand 179 states and 200 transitions. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 09:05:53,516 WARN L227 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 31 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-16 09:05:58,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:58,515 INFO L93 Difference]: Finished difference Result 464 states and 526 transitions. [2021-12-16 09:05:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-16 09:05:58,516 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2021-12-16 09:05:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:58,517 INFO L225 Difference]: With dead ends: 464 [2021-12-16 09:05:58,517 INFO L226 Difference]: Without dead ends: 364 [2021-12-16 09:05:58,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=504, Invalid=902, Unknown=0, NotChecked=0, Total=1406 [2021-12-16 09:05:58,518 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 254 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:58,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 694 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:05:58,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-12-16 09:05:58,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 179. [2021-12-16 09:05:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 162 states have (on average 1.1296296296296295) internal successors, (183), 169 states have internal predecessors, (183), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-16 09:05:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 192 transitions. [2021-12-16 09:05:58,528 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 192 transitions. Word has length 82 [2021-12-16 09:05:58,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:58,528 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 192 transitions. [2021-12-16 09:05:58,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 09:05:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 192 transitions. [2021-12-16 09:05:58,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-16 09:05:58,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:58,530 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:58,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:58,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-16 09:05:58,753 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:05:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash 195178925, now seen corresponding path program 1 times [2021-12-16 09:05:58,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:58,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25908005] [2021-12-16 09:05:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:58,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:58,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:05:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:58,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:05:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:58,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 09:05:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:59,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 09:05:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 4 proven. 493 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:05:59,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:59,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25908005] [2021-12-16 09:05:59,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25908005] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:59,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845651255] [2021-12-16 09:05:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:59,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:59,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:59,013 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:59,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 09:05:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:59,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-16 09:05:59,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 26 proven. 483 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 09:05:59,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:06:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 4 proven. 493 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:06:00,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845651255] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:06:00,212 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:06:00,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 50 [2021-12-16 09:06:00,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129278875] [2021-12-16 09:06:00,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:06:00,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-16 09:06:00,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:06:00,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-16 09:06:00,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=846, Invalid=1604, Unknown=0, NotChecked=0, Total=2450 [2021-12-16 09:06:00,214 INFO L87 Difference]: Start difference. First operand 179 states and 192 transitions. Second operand has 50 states, 50 states have (on average 5.28) internal successors, (264), 50 states have internal predecessors, (264), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 09:06:00,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:06:00,704 INFO L93 Difference]: Finished difference Result 1131 states and 1249 transitions. [2021-12-16 09:06:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-16 09:06:00,706 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.28) internal successors, (264), 50 states have internal predecessors, (264), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 121 [2021-12-16 09:06:00,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:06:00,709 INFO L225 Difference]: With dead ends: 1131 [2021-12-16 09:06:00,709 INFO L226 Difference]: Without dead ends: 1037 [2021-12-16 09:06:00,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=977, Invalid=1779, Unknown=0, NotChecked=0, Total=2756 [2021-12-16 09:06:00,711 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 775 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:06:00,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 714 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:06:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-12-16 09:06:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 259. [2021-12-16 09:06:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 242 states have (on average 1.1528925619834711) internal successors, (279), 249 states have internal predecessors, (279), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-16 09:06:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 288 transitions. [2021-12-16 09:06:00,741 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 288 transitions. Word has length 121 [2021-12-16 09:06:00,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:06:00,742 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 288 transitions. [2021-12-16 09:06:00,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.28) internal successors, (264), 50 states have internal predecessors, (264), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 09:06:00,742 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 288 transitions. [2021-12-16 09:06:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-16 09:06:00,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:06:00,744 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:06:00,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 09:06:00,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-16 09:06:00,960 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:06:00,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:06:00,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1969340652, now seen corresponding path program 2 times [2021-12-16 09:06:00,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:06:00,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045349699] [2021-12-16 09:06:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:06:00,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:06:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:01,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:06:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:01,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:06:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 09:06:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 09:06:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 4 proven. 465 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:06:01,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:06:01,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045349699] [2021-12-16 09:06:01,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045349699] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:06:01,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002827671] [2021-12-16 09:06:01,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:06:01,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:06:01,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:06:01,324 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:06:01,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 09:06:01,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:06:01,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:06:01,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 09:06:01,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:06:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2021-12-16 09:06:01,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:06:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2021-12-16 09:06:01,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002827671] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:06:01,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:06:01,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7, 7] total 28 [2021-12-16 09:06:01,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604939220] [2021-12-16 09:06:01,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:06:01,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-16 09:06:01,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:06:01,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-16 09:06:01,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2021-12-16 09:06:01,876 INFO L87 Difference]: Start difference. First operand 259 states and 288 transitions. Second operand has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 26 states have internal predecessors, (134), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-16 09:06:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:06:02,489 INFO L93 Difference]: Finished difference Result 575 states and 655 transitions. [2021-12-16 09:06:02,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-16 09:06:02,490 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 26 states have internal predecessors, (134), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 122 [2021-12-16 09:06:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:06:02,492 INFO L225 Difference]: With dead ends: 575 [2021-12-16 09:06:02,492 INFO L226 Difference]: Without dead ends: 481 [2021-12-16 09:06:02,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=923, Unknown=0, NotChecked=0, Total=1122 [2021-12-16 09:06:02,493 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 382 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 09:06:02,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 1579 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 09:06:02,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-12-16 09:06:02,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 276. [2021-12-16 09:06:02,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 257 states have (on average 1.1478599221789882) internal successors, (295), 263 states have internal predecessors, (295), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-16 09:06:02,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 308 transitions. [2021-12-16 09:06:02,509 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 308 transitions. Word has length 122 [2021-12-16 09:06:02,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:06:02,510 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 308 transitions. [2021-12-16 09:06:02,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 26 states have internal predecessors, (134), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-16 09:06:02,510 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 308 transitions. [2021-12-16 09:06:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-16 09:06:02,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:06:02,511 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:06:02,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-16 09:06:02,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-16 09:06:02,735 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-12-16 09:06:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:06:02,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1978346494, now seen corresponding path program 1 times [2021-12-16 09:06:02,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:06:02,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783432412] [2021-12-16 09:06:02,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:06:02,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:06:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 09:06:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:02,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:06:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:03,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 09:06:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 09:06:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 4 proven. 535 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:06:03,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:06:03,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783432412] [2021-12-16 09:06:03,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783432412] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:06:03,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230723460] [2021-12-16 09:06:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:06:03,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:06:03,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:06:03,110 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:06:03,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-16 09:06:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:06:03,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-16 09:06:03,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:06:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 26 proven. 525 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 09:06:03,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:06:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 4 proven. 535 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:06:04,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230723460] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:06:04,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:06:04,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2021-12-16 09:06:04,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490850969] [2021-12-16 09:06:04,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:06:04,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-16 09:06:04,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:06:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-16 09:06:04,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=1986, Unknown=0, NotChecked=0, Total=2652 [2021-12-16 09:06:04,626 INFO L87 Difference]: Start difference. First operand 276 states and 308 transitions. Second operand has 52 states, 52 states have (on average 5.346153846153846) internal successors, (278), 52 states have internal predecessors, (278), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 09:06:15,704 WARN L227 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 41 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)