./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:23:21,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:23:21,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:23:21,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:23:21,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:23:21,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:23:21,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:23:21,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:23:21,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:23:21,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:23:21,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:23:21,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:23:21,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:23:21,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:23:21,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:23:21,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:23:21,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:23:21,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:23:21,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:23:21,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:23:21,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:23:21,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:23:21,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:23:21,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:23:21,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:23:21,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:23:21,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:23:21,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:23:21,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:23:21,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:23:21,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:23:21,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:23:21,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:23:21,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:23:21,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:23:21,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:23:21,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:23:21,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:23:21,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:23:21,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:23:21,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:23:21,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-10-20 06:23:21,605 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:23:21,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:23:21,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:23:21,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:23:21,607 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:23:21,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:23:21,607 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:23:21,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:23:21,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:23:21,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 06:23:21,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:23:21,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 06:23:21,608 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-10-20 06:23:21,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:23:21,608 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:23:21,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 06:23:21,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:23:21,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:23:21,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:23:21,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:23:21,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:23:21,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:23:21,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:23:21,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 06:23:21,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:23:21,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:23:21,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 06:23:21,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:23:21,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac99a20a7aff68d4303ed37ca9ad8305a1f8cf0d [2020-10-20 06:23:21,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:23:21,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:23:21,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:23:21,823 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:23:21,825 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:23:21,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-10-20 06:23:21,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc69d7c3b/17cd8729ffc74f0eb9de6694ee0ec5e4/FLAG278388ef0 [2020-10-20 06:23:22,358 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:23:22,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-10-20 06:23:22,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc69d7c3b/17cd8729ffc74f0eb9de6694ee0ec5e4/FLAG278388ef0 [2020-10-20 06:23:22,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc69d7c3b/17cd8729ffc74f0eb9de6694ee0ec5e4 [2020-10-20 06:23:22,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:23:22,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:23:22,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:23:22,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:23:22,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:23:22,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:23:22" (1/1) ... [2020-10-20 06:23:22,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31dce42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:22, skipping insertion in model container [2020-10-20 06:23:22,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:23:22" (1/1) ... [2020-10-20 06:23:22,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:23:22,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:23:22,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:23:22,973 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:23:22,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:23:23,006 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:23:23,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:23 WrapperNode [2020-10-20 06:23:23,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:23:23,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:23:23,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:23:23,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:23:23,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:23" (1/1) ... [2020-10-20 06:23:23,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:23" (1/1) ... [2020-10-20 06:23:23,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:23:23,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:23:23,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:23:23,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:23:23,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:23" (1/1) ... [2020-10-20 06:23:23,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:23" (1/1) ... [2020-10-20 06:23:23,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:23" (1/1) ... [2020-10-20 06:23:23,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:23" (1/1) ... [2020-10-20 06:23:23,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:23" (1/1) ... [2020-10-20 06:23:23,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:23" (1/1) ... [2020-10-20 06:23:23,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:23" (1/1) ... [2020-10-20 06:23:23,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:23:23,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:23:23,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:23:23,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:23:23,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:23:23,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:23:23,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:23:23,492 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:23:23,492 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 06:23:23,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:23:23 BoogieIcfgContainer [2020-10-20 06:23:23,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:23:23,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:23:23,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:23:23,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:23:23,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:23:22" (1/3) ... [2020-10-20 06:23:23,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbcfe2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:23:23, skipping insertion in model container [2020-10-20 06:23:23,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:23:23" (2/3) ... [2020-10-20 06:23:23,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbcfe2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:23:23, skipping insertion in model container [2020-10-20 06:23:23,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:23:23" (3/3) ... [2020-10-20 06:23:23,502 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-nestedLoop-1.c [2020-10-20 06:23:23,514 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:23:23,521 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-20 06:23:23,533 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-20 06:23:23,555 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:23:23,555 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 06:23:23,555 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:23:23,555 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:23:23,556 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:23:23,556 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:23:23,556 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:23:23,556 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:23:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-20 06:23:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:23:23,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:23,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:23:23,579 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:23,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:23,585 INFO L82 PathProgramCache]: Analyzing trace with hash 29685899, now seen corresponding path program 1 times [2020-10-20 06:23:23,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:23,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429242092] [2020-10-20 06:23:23,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:23,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429242092] [2020-10-20 06:23:23,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:23:23,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:23:23,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697311326] [2020-10-20 06:23:23,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 06:23:23,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:23,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 06:23:23,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 06:23:23,746 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-10-20 06:23:23,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:23,763 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-10-20 06:23:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 06:23:23,764 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-10-20 06:23:23,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:23,772 INFO L225 Difference]: With dead ends: 50 [2020-10-20 06:23:23,772 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 06:23:23,775 INFO L677 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 [2020-10-20 06:23:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 06:23:23,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-20 06:23:23,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 06:23:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-20 06:23:23,809 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 5 [2020-10-20 06:23:23,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:23,810 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-20 06:23:23,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 06:23:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-20 06:23:23,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:23:23,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:23,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:23:23,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:23:23,812 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:23,812 INFO L82 PathProgramCache]: Analyzing trace with hash 29685000, now seen corresponding path program 1 times [2020-10-20 06:23:23,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:23,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113800211] [2020-10-20 06:23:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:23,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113800211] [2020-10-20 06:23:23,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:23:23,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:23:23,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159103634] [2020-10-20 06:23:23,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:23:23,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:23,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:23:23,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:23:23,866 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 3 states. [2020-10-20 06:23:23,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:23,921 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-10-20 06:23:23,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:23:23,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-20 06:23:23,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:23,923 INFO L225 Difference]: With dead ends: 41 [2020-10-20 06:23:23,923 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 06:23:23,924 INFO L677 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 [2020-10-20 06:23:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 06:23:23,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 25. [2020-10-20 06:23:23,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-20 06:23:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-20 06:23:23,932 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2020-10-20 06:23:23,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:23,932 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-20 06:23:23,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:23:23,932 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-20 06:23:23,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-20 06:23:23,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:23,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-20 06:23:23,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:23:23,934 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:23,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:23,934 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2020-10-20 06:23:23,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:23,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294584120] [2020-10-20 06:23:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:23,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294584120] [2020-10-20 06:23:23,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:23:23,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:23:23,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486877934] [2020-10-20 06:23:23,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:23:23,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:23,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:23:23,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:23:23,965 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2020-10-20 06:23:23,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:23,994 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-10-20 06:23:23,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:23:23,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-20 06:23:23,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:23,995 INFO L225 Difference]: With dead ends: 34 [2020-10-20 06:23:23,995 INFO L226 Difference]: Without dead ends: 33 [2020-10-20 06:23:23,996 INFO L677 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 [2020-10-20 06:23:23,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-20 06:23:24,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2020-10-20 06:23:24,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:23:24,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-20 06:23:24,002 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 5 [2020-10-20 06:23:24,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:24,003 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-20 06:23:24,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:23:24,004 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-20 06:23:24,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:23:24,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:24,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:23:24,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:23:24,005 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:24,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:24,006 INFO L82 PathProgramCache]: Analyzing trace with hash 920235084, now seen corresponding path program 1 times [2020-10-20 06:23:24,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:24,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059325633] [2020-10-20 06:23:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:24,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059325633] [2020-10-20 06:23:24,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:23:24,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:23:24,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383655473] [2020-10-20 06:23:24,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:23:24,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:24,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:23:24,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:23:24,062 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states. [2020-10-20 06:23:24,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:24,100 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2020-10-20 06:23:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:23:24,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 06:23:24,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:24,102 INFO L225 Difference]: With dead ends: 45 [2020-10-20 06:23:24,102 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 06:23:24,102 INFO L677 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 [2020-10-20 06:23:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 06:23:24,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-10-20 06:23:24,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-20 06:23:24,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-20 06:23:24,115 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 6 [2020-10-20 06:23:24,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:24,115 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-20 06:23:24,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:23:24,115 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-20 06:23:24,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 06:23:24,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:24,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:23:24,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:23:24,116 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:24,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:24,117 INFO L82 PathProgramCache]: Analyzing trace with hash 920236110, now seen corresponding path program 1 times [2020-10-20 06:23:24,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:24,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560231515] [2020-10-20 06:23:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:24,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560231515] [2020-10-20 06:23:24,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:23:24,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:23:24,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219124820] [2020-10-20 06:23:24,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:23:24,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:24,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:23:24,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:23:24,144 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 3 states. [2020-10-20 06:23:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:24,161 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-10-20 06:23:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:23:24,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-10-20 06:23:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:24,162 INFO L225 Difference]: With dead ends: 31 [2020-10-20 06:23:24,162 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 06:23:24,163 INFO L677 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 [2020-10-20 06:23:24,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 06:23:24,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-20 06:23:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 06:23:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-10-20 06:23:24,169 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 6 [2020-10-20 06:23:24,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:24,169 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-10-20 06:23:24,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:23:24,169 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-10-20 06:23:24,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:23:24,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:24,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:23:24,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:23:24,170 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:24,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:24,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1537451600, now seen corresponding path program 1 times [2020-10-20 06:23:24,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:24,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109949980] [2020-10-20 06:23:24,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:24,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109949980] [2020-10-20 06:23:24,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:23:24,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-20 06:23:24,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169455372] [2020-10-20 06:23:24,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:23:24,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:24,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:23:24,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:23:24,202 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 3 states. [2020-10-20 06:23:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:24,216 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-10-20 06:23:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:23:24,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-20 06:23:24,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:24,217 INFO L225 Difference]: With dead ends: 30 [2020-10-20 06:23:24,218 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 06:23:24,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:23:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 06:23:24,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 06:23:24,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 06:23:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-10-20 06:23:24,226 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 7 [2020-10-20 06:23:24,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:24,226 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-10-20 06:23:24,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:23:24,226 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-10-20 06:23:24,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:23:24,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:24,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:23:24,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:23:24,228 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:24,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:24,228 INFO L82 PathProgramCache]: Analyzing trace with hash -416359280, now seen corresponding path program 1 times [2020-10-20 06:23:24,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:24,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099603287] [2020-10-20 06:23:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:24,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099603287] [2020-10-20 06:23:24,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:23:24,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:23:24,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868049491] [2020-10-20 06:23:24,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:23:24,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:24,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:23:24,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:23:24,257 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 3 states. [2020-10-20 06:23:24,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:24,277 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-10-20 06:23:24,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:23:24,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-20 06:23:24,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:24,278 INFO L225 Difference]: With dead ends: 29 [2020-10-20 06:23:24,278 INFO L226 Difference]: Without dead ends: 28 [2020-10-20 06:23:24,279 INFO L677 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 [2020-10-20 06:23:24,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-20 06:23:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-20 06:23:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-20 06:23:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-20 06:23:24,285 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 8 [2020-10-20 06:23:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:24,285 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-20 06:23:24,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:23:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-20 06:23:24,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 06:23:24,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:24,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-10-20 06:23:24,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:23:24,287 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:24,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:24,287 INFO L82 PathProgramCache]: Analyzing trace with hash -52819969, now seen corresponding path program 1 times [2020-10-20 06:23:24,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:24,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293597184] [2020-10-20 06:23:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:24,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293597184] [2020-10-20 06:23:24,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526012068] [2020-10-20 06:23:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:24,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:23:24,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:23:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:24,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:23:24,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-20 06:23:24,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861176861] [2020-10-20 06:23:24,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:23:24,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:24,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:23:24,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:23:24,484 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-10-20 06:23:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:24,531 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-10-20 06:23:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:23:24,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 06:23:24,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:24,536 INFO L225 Difference]: With dead ends: 54 [2020-10-20 06:23:24,536 INFO L226 Difference]: Without dead ends: 53 [2020-10-20 06:23:24,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:23:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-20 06:23:24,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2020-10-20 06:23:24,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 06:23:24,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-20 06:23:24,553 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 9 [2020-10-20 06:23:24,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:24,553 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-20 06:23:24,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:23:24,553 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-20 06:23:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:23:24,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:24,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:23:24,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-10-20 06:23:24,765 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:24,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:24,766 INFO L82 PathProgramCache]: Analyzing trace with hash -689307342, now seen corresponding path program 1 times [2020-10-20 06:23:24,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:24,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139322855] [2020-10-20 06:23:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:24,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139322855] [2020-10-20 06:23:24,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:23:24,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:23:24,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536423210] [2020-10-20 06:23:24,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:23:24,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:24,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:23:24,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:23:24,817 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 4 states. [2020-10-20 06:23:24,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:24,903 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-10-20 06:23:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:23:24,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 06:23:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:24,904 INFO L225 Difference]: With dead ends: 64 [2020-10-20 06:23:24,904 INFO L226 Difference]: Without dead ends: 62 [2020-10-20 06:23:24,905 INFO L677 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 [2020-10-20 06:23:24,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-20 06:23:24,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2020-10-20 06:23:24,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-20 06:23:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-10-20 06:23:24,913 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 10 [2020-10-20 06:23:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:24,914 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-10-20 06:23:24,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:23:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-10-20 06:23:24,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:23:24,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:24,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:23:24,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:23:24,915 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:24,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:24,916 INFO L82 PathProgramCache]: Analyzing trace with hash 106308951, now seen corresponding path program 1 times [2020-10-20 06:23:24,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:24,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473562270] [2020-10-20 06:23:24,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:24,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473562270] [2020-10-20 06:23:24,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:23:24,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:23:24,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773184497] [2020-10-20 06:23:24,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:23:24,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:24,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:23:24,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:23:24,961 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand 4 states. [2020-10-20 06:23:25,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:25,027 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-10-20 06:23:25,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:23:25,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 06:23:25,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:25,028 INFO L225 Difference]: With dead ends: 46 [2020-10-20 06:23:25,028 INFO L226 Difference]: Without dead ends: 44 [2020-10-20 06:23:25,029 INFO L677 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 [2020-10-20 06:23:25,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-20 06:23:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2020-10-20 06:23:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 06:23:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-10-20 06:23:25,039 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 11 [2020-10-20 06:23:25,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:25,040 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-10-20 06:23:25,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:23:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-10-20 06:23:25,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 06:23:25,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:25,041 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:23:25,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 06:23:25,042 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:25,042 INFO L82 PathProgramCache]: Analyzing trace with hash -999444228, now seen corresponding path program 1 times [2020-10-20 06:23:25,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:25,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959212901] [2020-10-20 06:23:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:25,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959212901] [2020-10-20 06:23:25,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542039536] [2020-10-20 06:23:25,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-20 06:23:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:25,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:23:25,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:23:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:25,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:23:25,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-20 06:23:25,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578000026] [2020-10-20 06:23:25,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:23:25,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:25,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:23:25,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:23:25,108 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 4 states. [2020-10-20 06:23:25,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:25,151 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-10-20 06:23:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:23:25,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-20 06:23:25,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:25,152 INFO L225 Difference]: With dead ends: 66 [2020-10-20 06:23:25,152 INFO L226 Difference]: Without dead ends: 65 [2020-10-20 06:23:25,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:23:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-20 06:23:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2020-10-20 06:23:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 06:23:25,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-10-20 06:23:25,161 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 12 [2020-10-20 06:23:25,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:25,161 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-10-20 06:23:25,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:23:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-10-20 06:23:25,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 06:23:25,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:25,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2020-10-20 06:23:25,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:25,369 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:25,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:25,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1890502518, now seen corresponding path program 2 times [2020-10-20 06:23:25,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:25,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528653789] [2020-10-20 06:23:25,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 06:23:25,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528653789] [2020-10-20 06:23:25,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292270119] [2020-10-20 06:23:25,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:25,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 06:23:25,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:23:25,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:23:25,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:23:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 06:23:25,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:23:25,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-10-20 06:23:25,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506904262] [2020-10-20 06:23:25,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:23:25,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:25,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:23:25,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:23:25,458 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 4 states. [2020-10-20 06:23:25,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:25,494 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-10-20 06:23:25,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:23:25,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 06:23:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:25,496 INFO L225 Difference]: With dead ends: 56 [2020-10-20 06:23:25,497 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 06:23:25,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:23:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 06:23:25,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-10-20 06:23:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-20 06:23:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2020-10-20 06:23:25,505 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 13 [2020-10-20 06:23:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:25,505 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2020-10-20 06:23:25,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:23:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2020-10-20 06:23:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:23:25,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:25,506 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:23:25,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-20 06:23:25,721 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:25,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:25,722 INFO L82 PathProgramCache]: Analyzing trace with hash -575852389, now seen corresponding path program 1 times [2020-10-20 06:23:25,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:25,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595397029] [2020-10-20 06:23:25,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:23:25,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595397029] [2020-10-20 06:23:25,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:23:25,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:23:25,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907536214] [2020-10-20 06:23:25,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:23:25,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:25,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:23:25,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:23:25,757 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand 4 states. [2020-10-20 06:23:25,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:25,784 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2020-10-20 06:23:25,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:23:25,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-20 06:23:25,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:25,786 INFO L225 Difference]: With dead ends: 48 [2020-10-20 06:23:25,786 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 06:23:25,786 INFO L677 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 [2020-10-20 06:23:25,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 06:23:25,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-20 06:23:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 06:23:25,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-10-20 06:23:25,792 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 14 [2020-10-20 06:23:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:25,793 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-10-20 06:23:25,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:23:25,793 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-10-20 06:23:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:23:25,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:25,794 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:23:25,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 06:23:25,794 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:25,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:25,794 INFO L82 PathProgramCache]: Analyzing trace with hash 656583171, now seen corresponding path program 1 times [2020-10-20 06:23:25,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:25,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94958448] [2020-10-20 06:23:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:25,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94958448] [2020-10-20 06:23:25,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211433005] [2020-10-20 06:23:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:25,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:23:25,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:23:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:25,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:23:25,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-20 06:23:25,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195622642] [2020-10-20 06:23:25,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:23:25,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:25,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:23:25,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:23:25,881 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 6 states. [2020-10-20 06:23:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:25,967 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2020-10-20 06:23:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:23:25,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 06:23:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:25,968 INFO L225 Difference]: With dead ends: 78 [2020-10-20 06:23:25,968 INFO L226 Difference]: Without dead ends: 45 [2020-10-20 06:23:25,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:23:25,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-20 06:23:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-20 06:23:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 06:23:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-20 06:23:25,976 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 16 [2020-10-20 06:23:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:25,976 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-20 06:23:25,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:23:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-20 06:23:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 06:23:25,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:25,977 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:23:26,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:26,189 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:26,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:26,189 INFO L82 PathProgramCache]: Analyzing trace with hash 471235363, now seen corresponding path program 1 times [2020-10-20 06:23:26,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:26,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949551979] [2020-10-20 06:23:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:26,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949551979] [2020-10-20 06:23:26,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217830911] [2020-10-20 06:23:26,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-20 06:23:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:26,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:23:26,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:26,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:23:26,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-20 06:23:26,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17278200] [2020-10-20 06:23:26,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:23:26,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:26,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:23:26,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:23:26,270 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-20 06:23:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:26,395 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2020-10-20 06:23:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:23:26,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-20 06:23:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:26,396 INFO L225 Difference]: With dead ends: 116 [2020-10-20 06:23:26,396 INFO L226 Difference]: Without dead ends: 115 [2020-10-20 06:23:26,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:23:26,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-20 06:23:26,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 68. [2020-10-20 06:23:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 06:23:26,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-10-20 06:23:26,405 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 17 [2020-10-20 06:23:26,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:26,405 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-10-20 06:23:26,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:23:26,405 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-10-20 06:23:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:23:26,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:26,406 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-10-20 06:23:26,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 06:23:26,620 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:26,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:26,620 INFO L82 PathProgramCache]: Analyzing trace with hash -415013654, now seen corresponding path program 2 times [2020-10-20 06:23:26,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:26,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087709981] [2020-10-20 06:23:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:26,648 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-20 06:23:26,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087709981] [2020-10-20 06:23:26,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725219597] [2020-10-20 06:23:26,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:26,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 06:23:26,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:23:26,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:23:26,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:23:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-20 06:23:26,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:23:26,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-10-20 06:23:26,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947470829] [2020-10-20 06:23:26,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:23:26,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:26,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:23:26,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:23:26,704 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 4 states. [2020-10-20 06:23:26,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:26,725 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2020-10-20 06:23:26,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:23:26,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-20 06:23:26,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:26,726 INFO L225 Difference]: With dead ends: 68 [2020-10-20 06:23:26,726 INFO L226 Difference]: Without dead ends: 67 [2020-10-20 06:23:26,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:23:26,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-20 06:23:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 39. [2020-10-20 06:23:26,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 06:23:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-20 06:23:26,732 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 19 [2020-10-20 06:23:26,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:26,732 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-20 06:23:26,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:23:26,732 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-20 06:23:26,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 06:23:26,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:26,733 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:23:26,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:26,947 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:26,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:26,948 INFO L82 PathProgramCache]: Analyzing trace with hash 2095953530, now seen corresponding path program 2 times [2020-10-20 06:23:26,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:26,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221873530] [2020-10-20 06:23:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:27,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221873530] [2020-10-20 06:23:27,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620045274] [2020-10-20 06:23:27,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-20 06:23:27,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:23:27,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:27,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:23:27,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:23:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:27,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:23:27,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-20 06:23:27,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80555677] [2020-10-20 06:23:27,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:23:27,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:27,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:23:27,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:23:27,085 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2020-10-20 06:23:27,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:27,230 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2020-10-20 06:23:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:23:27,231 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-20 06:23:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:27,231 INFO L225 Difference]: With dead ends: 92 [2020-10-20 06:23:27,232 INFO L226 Difference]: Without dead ends: 91 [2020-10-20 06:23:27,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:23:27,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-20 06:23:27,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 44. [2020-10-20 06:23:27,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-20 06:23:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-20 06:23:27,239 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 22 [2020-10-20 06:23:27,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:27,239 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-20 06:23:27,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:23:27,239 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-20 06:23:27,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 06:23:27,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:27,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:23:27,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 06:23:27,450 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:27,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:27,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1289288067, now seen corresponding path program 3 times [2020-10-20 06:23:27,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:27,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971918778] [2020-10-20 06:23:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:23:27,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971918778] [2020-10-20 06:23:27,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294692848] [2020-10-20 06:23:27,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:27,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-20 06:23:27,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:23:27,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:23:27,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:23:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-20 06:23:27,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:23:27,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2020-10-20 06:23:27,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572661053] [2020-10-20 06:23:27,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:23:27,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:27,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:23:27,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:23:27,602 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 12 states. [2020-10-20 06:23:28,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:28,101 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2020-10-20 06:23:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-20 06:23:28,102 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-20 06:23:28,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:28,103 INFO L225 Difference]: With dead ends: 143 [2020-10-20 06:23:28,103 INFO L226 Difference]: Without dead ends: 142 [2020-10-20 06:23:28,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=358, Invalid=698, Unknown=0, NotChecked=0, Total=1056 [2020-10-20 06:23:28,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-20 06:23:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 60. [2020-10-20 06:23:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-20 06:23:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-10-20 06:23:28,112 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 27 [2020-10-20 06:23:28,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:28,113 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-10-20 06:23:28,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:23:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-10-20 06:23:28,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-20 06:23:28,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:28,115 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:23:28,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-20 06:23:28,328 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:28,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:28,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1685598945, now seen corresponding path program 1 times [2020-10-20 06:23:28,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:28,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70689487] [2020-10-20 06:23:28,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 06:23:28,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70689487] [2020-10-20 06:23:28,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205500602] [2020-10-20 06:23:28,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:28,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:23:28,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:23:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-20 06:23:28,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:23:28,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-10-20 06:23:28,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784898047] [2020-10-20 06:23:28,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:23:28,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:28,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:23:28,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:23:28,484 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 6 states. [2020-10-20 06:23:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:28,584 INFO L93 Difference]: Finished difference Result 147 states and 172 transitions. [2020-10-20 06:23:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:23:28,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-10-20 06:23:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:28,585 INFO L225 Difference]: With dead ends: 147 [2020-10-20 06:23:28,585 INFO L226 Difference]: Without dead ends: 102 [2020-10-20 06:23:28,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:23:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-20 06:23:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 71. [2020-10-20 06:23:28,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-20 06:23:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2020-10-20 06:23:28,595 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 39 [2020-10-20 06:23:28,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:28,595 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2020-10-20 06:23:28,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:23:28,595 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2020-10-20 06:23:28,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-20 06:23:28,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:28,597 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 06:23:28,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:28,812 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:28,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:28,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1243466243, now seen corresponding path program 2 times [2020-10-20 06:23:28,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:28,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075357706] [2020-10-20 06:23:28,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:28,883 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:23:28,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075357706] [2020-10-20 06:23:28,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575673232] [2020-10-20 06:23:28,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:28,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:23:28,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:23:28,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:23:28,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:23:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:23:28,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:23:28,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-20 06:23:28,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094003211] [2020-10-20 06:23:28,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:23:28,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:28,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:23:28,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:23:28,960 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 10 states. [2020-10-20 06:23:29,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:29,172 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2020-10-20 06:23:29,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:23:29,172 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-20 06:23:29,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:29,173 INFO L225 Difference]: With dead ends: 142 [2020-10-20 06:23:29,174 INFO L226 Difference]: Without dead ends: 141 [2020-10-20 06:23:29,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2020-10-20 06:23:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-20 06:23:29,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 82. [2020-10-20 06:23:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-20 06:23:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-10-20 06:23:29,188 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 39 [2020-10-20 06:23:29,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:29,190 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-10-20 06:23:29,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:23:29,191 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-10-20 06:23:29,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-20 06:23:29,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:23:29,192 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-20 06:23:29,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:29,406 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-10-20 06:23:29,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:23:29,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1165798321, now seen corresponding path program 3 times [2020-10-20 06:23:29,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:23:29,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547994287] [2020-10-20 06:23:29,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:23:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:23:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:23:29,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547994287] [2020-10-20 06:23:29,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530852178] [2020-10-20 06:23:29,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:23:29,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 06:23:29,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:23:29,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:23:29,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:23:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-20 06:23:29,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:23:29,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 3] total 13 [2020-10-20 06:23:29,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600845558] [2020-10-20 06:23:29,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 06:23:29,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:23:29,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 06:23:29,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:23:29,629 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 14 states. [2020-10-20 06:23:30,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:23:30,068 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2020-10-20 06:23:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-20 06:23:30,069 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-20 06:23:30,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:23:30,069 INFO L225 Difference]: With dead ends: 198 [2020-10-20 06:23:30,069 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:23:30,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=430, Invalid=830, Unknown=0, NotChecked=0, Total=1260 [2020-10-20 06:23:30,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:23:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:23:30,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:23:30,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:23:30,073 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-10-20 06:23:30,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:23:30,074 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:23:30,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 06:23:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:23:30,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:23:30,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-20 06:23:30,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 06:23:30,427 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2020-10-20 06:23:30,672 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 121 [2020-10-20 06:23:30,883 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 112 [2020-10-20 06:23:31,153 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 26 [2020-10-20 06:23:31,892 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 34 [2020-10-20 06:23:32,253 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 29 [2020-10-20 06:23:32,260 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-10-20 06:23:32,261 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 34) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse5 (<= ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~j~0)) (.cse6 (<= 0 ULTIMATE.start_main_~j~0)) (.cse1 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse2 (<= 0 ULTIMATE.start_main_~N~0)) (.cse3 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse4 (<= ULTIMATE.start_main_~n~0 2147483647))) (or (and .cse0 (<= ULTIMATE.start_main_~i~0 0) .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 .cse6 .cse2 .cse3 (<= ULTIMATE.start_main_~j~0 0) .cse4) (and .cse5 .cse6 (<= ULTIMATE.start_main_~N~0 ULTIMATE.start_main_~i~0) .cse1 .cse2 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1)) .cse3 .cse4))) [2020-10-20 06:23:32,261 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2020-10-20 06:23:32,261 INFO L277 CegarLoopResult]: At program point L36(lines 13 37) the Hoare annotation is: true [2020-10-20 06:23:32,261 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-10-20 06:23:32,261 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 06:23:32,261 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-10-20 06:23:32,261 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 06:23:32,262 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-10-20 06:23:32,262 INFO L274 CegarLoopResult]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2020-10-20 06:23:32,262 INFO L270 CegarLoopResult]: At program point L28-4(lines 28 30) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse1 (<= 0 ULTIMATE.start_main_~j~0)) (.cse2 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse3 (<= ULTIMATE.start_main_~k~0 2147483646)) (.cse4 (<= 0 ULTIMATE.start_main_~N~0)) (.cse5 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse6 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse7 (<= 0 ULTIMATE.start_main_~k~0))) (or (and .cse0 .cse1 .cse2 .cse3 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1)) .cse4 .cse5 .cse6 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~i~0 1)) .cse7) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7))) [2020-10-20 06:23:32,262 INFO L274 CegarLoopResult]: For program point L28-5(lines 28 30) no Hoare annotation was computed. [2020-10-20 06:23:32,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-10-20 06:23:32,262 INFO L274 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-10-20 06:23:32,262 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 06:23:32,262 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-20 06:23:32,263 INFO L274 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-10-20 06:23:32,263 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 29) no Hoare annotation was computed. [2020-10-20 06:23:32,263 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 32) the Hoare annotation is: (let ((.cse4 (<= ULTIMATE.start_main_~N~0 2147483647)) (.cse5 (<= ULTIMATE.start_main_~j~0 0)) (.cse0 (<= 0 ULTIMATE.start_main_~i~0)) (.cse1 (<= 0 ULTIMATE.start_main_~j~0)) (.cse7 (<= ULTIMATE.start_main_~i~0 2147483646)) (.cse2 (<= ULTIMATE.start_main_~m~0 2147483647)) (.cse3 (<= 0 ULTIMATE.start_main_~N~0)) (.cse8 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~k~0 1))) (.cse6 (<= ULTIMATE.start_main_~n~0 2147483647))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 0) .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse7 (<= ULTIMATE.start_main_~m~0 0) .cse3 .cse4 .cse6 .cse5) (and (<= ULTIMATE.start_main_~N~0 ULTIMATE.start_main_~i~0) .cse1 .cse7 .cse2 .cse8 .cse3 .cse6 .cse5) (and .cse0 .cse1 .cse7 .cse2 (<= ULTIMATE.start_main_~k~0 2147483646) .cse3 .cse8 .cse6 (<= ULTIMATE.start_main_~N~0 (+ ULTIMATE.start_main_~i~0 1)) (<= 0 ULTIMATE.start_main_~k~0)))) [2020-10-20 06:23:32,263 INFO L274 CegarLoopResult]: For program point L25-3(lines 25 32) no Hoare annotation was computed. [2020-10-20 06:23:32,263 INFO L274 CegarLoopResult]: For program point L21(lines 21 35) no Hoare annotation was computed. [2020-10-20 06:23:32,263 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 35) no Hoare annotation was computed. [2020-10-20 06:23:32,263 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 28) no Hoare annotation was computed. [2020-10-20 06:23:32,263 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-10-20 06:23:32,263 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-10-20 06:23:32,264 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2020-10-20 06:23:32,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:23:32 BoogieIcfgContainer [2020-10-20 06:23:32,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:23:32,287 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:23:32,287 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:23:32,287 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:23:32,288 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:23:23" (3/4) ... [2020-10-20 06:23:32,291 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:23:32,303 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 06:23:32,303 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 06:23:32,353 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:23:32,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:23:32,355 INFO L168 Benchmark]: Toolchain (without parser) took 9627.58 ms. Allocated memory was 40.4 MB in the beginning and 68.7 MB in the end (delta: 28.3 MB). Free memory was 19.2 MB in the beginning and 17.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 30.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:32,355 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 30.9 MB. Free memory was 6.4 MB in the beginning and 6.4 MB in the end (delta: 80.5 kB). Peak memory consumption was 80.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:23:32,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.53 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 18.4 MB in the beginning and 20.4 MB in the end (delta: -2.0 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:32,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.11 ms. Allocated memory is still 41.4 MB. Free memory was 20.4 MB in the beginning and 18.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:32,357 INFO L168 Benchmark]: Boogie Preprocessor took 21.07 ms. Allocated memory is still 41.4 MB. Free memory was 18.8 MB in the beginning and 17.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:32,357 INFO L168 Benchmark]: RCFGBuilder took 430.20 ms. Allocated memory was 41.4 MB in the beginning and 42.5 MB in the end (delta: 1.0 MB). Free memory was 17.5 MB in the beginning and 19.1 MB in the end (delta: -1.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:32,358 INFO L168 Benchmark]: TraceAbstraction took 8790.83 ms. Allocated memory was 42.5 MB in the beginning and 68.7 MB in the end (delta: 26.2 MB). Free memory was 18.7 MB in the beginning and 20.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 37.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:32,359 INFO L168 Benchmark]: Witness Printer took 66.63 ms. Allocated memory is still 68.7 MB. Free memory was 20.6 MB in the beginning and 17.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:23:32,362 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 30.9 MB. Free memory was 6.4 MB in the beginning and 6.4 MB in the end (delta: 80.5 kB). Peak memory consumption was 80.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 273.53 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 18.4 MB in the beginning and 20.4 MB in the end (delta: -2.0 MB). Peak memory consumption was 8.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 35.11 ms. Allocated memory is still 41.4 MB. Free memory was 20.4 MB in the beginning and 18.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 21.07 ms. Allocated memory is still 41.4 MB. Free memory was 18.8 MB in the beginning and 17.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 430.20 ms. Allocated memory was 41.4 MB in the beginning and 42.5 MB in the end (delta: 1.0 MB). Free memory was 17.5 MB in the beginning and 19.1 MB in the end (delta: -1.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 8790.83 ms. Allocated memory was 42.5 MB in the beginning and 68.7 MB in the end (delta: 26.2 MB). Free memory was 18.7 MB in the beginning and 20.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 37.2 MB. Max. memory is 14.3 GB. * Witness Printer took 66.63 ms. Allocated memory is still 68.7 MB. Free memory was 20.6 MB in the beginning and 17.1 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 29]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((0 <= i && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && n <= 2147483647) || ((((((m <= j && 0 <= i) && 0 <= j) && 0 <= N) && N <= 2147483647) && j <= 0) && n <= 2147483647)) || (((((((m <= j && 0 <= j) && N <= i) && m <= 2147483647) && 0 <= N) && N <= k + 1) && N <= 2147483647) && n <= 2147483647) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((((((((0 <= i && 0 <= j) && i <= 0) && m <= 2147483647) && 0 <= N) && N <= 2147483647) && j <= 0) && n <= 2147483647) || (((((((0 <= i && 0 <= j) && i <= 2147483646) && m <= 0) && 0 <= N) && N <= 2147483647) && n <= 2147483647) && j <= 0)) || (((((((N <= i && 0 <= j) && i <= 2147483646) && m <= 2147483647) && N <= k + 1) && 0 <= N) && n <= 2147483647) && j <= 0)) || (((((((((0 <= i && 0 <= j) && i <= 2147483646) && m <= 2147483647) && k <= 2147483646) && 0 <= N) && N <= k + 1) && n <= 2147483647) && N <= i + 1) && 0 <= k) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((0 <= i && 0 <= j) && m <= 2147483647) && k <= 2147483646) && N <= k + 1) && 0 <= N) && N <= 2147483647) && n <= 2147483647) && N <= i + 1) && 0 <= k) || ((((((((0 <= i && 0 <= j) && i <= 0) && m <= 2147483647) && k <= 2147483646) && 0 <= N) && N <= 2147483647) && n <= 2147483647) && 0 <= k) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 21, TraceHistogramMax: 6, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 948 SDslu, 455 SDs, 0 SdLazy, 723 SolverSat, 263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 408 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 400 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 63 NumberOfFragments, 247 HoareAnnotationTreeSize, 4 FomulaSimplifications, 506049 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 4 FomulaSimplificationsInter, 69456 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 589 NumberOfCodeBlocks, 530 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 557 ConstructedInterpolants, 0 QuantifiedInterpolants, 39851 SizeOfPredicates, 24 NumberOfNonLiveVariables, 638 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 32 InterpolantComputations, 11 PerfectInterpolantSequences, 156/478 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...