./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 16:24:37,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 16:24:37,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 16:24:37,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 16:24:37,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 16:24:37,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 16:24:37,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 16:24:37,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 16:24:37,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 16:24:37,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 16:24:37,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 16:24:37,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 16:24:37,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 16:24:37,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 16:24:37,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 16:24:37,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 16:24:37,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 16:24:37,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 16:24:37,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 16:24:37,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 16:24:37,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 16:24:37,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 16:24:37,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 16:24:37,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 16:24:37,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 16:24:37,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 16:24:37,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 16:24:37,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 16:24:37,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 16:24:37,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 16:24:37,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 16:24:37,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 16:24:37,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 16:24:37,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 16:24:37,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 16:24:37,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 16:24:37,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 16:24:37,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 16:24:37,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 16:24:37,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 16:24:37,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 16:24:37,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-19 16:24:37,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 16:24:37,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 16:24:37,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 16:24:37,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 16:24:37,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 16:24:37,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 16:24:37,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 16:24:37,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 16:24:37,620 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 16:24:37,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 16:24:37,621 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 16:24:37,621 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 16:24:37,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 16:24:37,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 16:24:37,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 16:24:37,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 16:24:37,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 16:24:37,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 16:24:37,622 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 16:24:37,622 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 16:24:37,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 16:24:37,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 16:24:37,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 16:24:37,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 16:24:37,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 16:24:37,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 16:24:37,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 16:24:37,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 16:24:37,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 16:24:37,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 16:24:37,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 16:24:37,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 16:24:37,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 16:24:37,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 16:24:37,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee [2021-12-19 16:24:37,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 16:24:37,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 16:24:37,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 16:24:37,820 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 16:24:37,820 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 16:24:37,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2021-12-19 16:24:37,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085cbe0c6/7fa75ee8e9e94492b9b6c884aea42fe1/FLAGe30f7ac05 [2021-12-19 16:24:38,357 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 16:24:38,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2021-12-19 16:24:38,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085cbe0c6/7fa75ee8e9e94492b9b6c884aea42fe1/FLAGe30f7ac05 [2021-12-19 16:24:38,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085cbe0c6/7fa75ee8e9e94492b9b6c884aea42fe1 [2021-12-19 16:24:38,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 16:24:38,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 16:24:38,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 16:24:38,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 16:24:38,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 16:24:38,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:24:38" (1/1) ... [2021-12-19 16:24:38,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae0693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:38, skipping insertion in model container [2021-12-19 16:24:38,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:24:38" (1/1) ... [2021-12-19 16:24:38,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 16:24:38,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 16:24:39,012 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i[33021,33034] [2021-12-19 16:24:39,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 16:24:39,153 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 16:24:39,170 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i[33021,33034] [2021-12-19 16:24:39,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 16:24:39,223 INFO L208 MainTranslator]: Completed translation [2021-12-19 16:24:39,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:39 WrapperNode [2021-12-19 16:24:39,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 16:24:39,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 16:24:39,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 16:24:39,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 16:24:39,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:39" (1/1) ... [2021-12-19 16:24:39,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:39" (1/1) ... [2021-12-19 16:24:39,345 INFO L137 Inliner]: procedures = 177, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1451 [2021-12-19 16:24:39,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 16:24:39,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 16:24:39,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 16:24:39,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 16:24:39,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:39" (1/1) ... [2021-12-19 16:24:39,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:39" (1/1) ... [2021-12-19 16:24:39,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:39" (1/1) ... [2021-12-19 16:24:39,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:39" (1/1) ... [2021-12-19 16:24:39,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:39" (1/1) ... [2021-12-19 16:24:39,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:39" (1/1) ... [2021-12-19 16:24:39,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:39" (1/1) ... [2021-12-19 16:24:39,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 16:24:39,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 16:24:39,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 16:24:39,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 16:24:39,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:39" (1/1) ... [2021-12-19 16:24:39,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 16:24:39,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:24:39,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-19 16:24:39,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-19 16:24:39,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-19 16:24:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-19 16:24:39,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-19 16:24:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-19 16:24:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-19 16:24:39,564 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-19 16:24:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-19 16:24:39,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 16:24:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-19 16:24:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-19 16:24:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-19 16:24:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-19 16:24:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 16:24:39,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 16:24:39,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 16:24:39,774 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 16:24:39,776 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 16:24:40,558 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 16:24:40,569 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 16:24:40,570 INFO L301 CfgBuilder]: Removed 77 assume(true) statements. [2021-12-19 16:24:40,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:24:40 BoogieIcfgContainer [2021-12-19 16:24:40,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 16:24:40,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 16:24:40,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 16:24:40,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 16:24:40,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:24:38" (1/3) ... [2021-12-19 16:24:40,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329602b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:24:40, skipping insertion in model container [2021-12-19 16:24:40,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:24:39" (2/3) ... [2021-12-19 16:24:40,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329602b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:24:40, skipping insertion in model container [2021-12-19 16:24:40,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:24:40" (3/3) ... [2021-12-19 16:24:40,583 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-3.i [2021-12-19 16:24:40,590 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 16:24:40,590 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-19 16:24:40,634 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 16:24:40,643 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-19 16:24:40,643 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-19 16:24:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 16:24:40,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-19 16:24:40,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:24:40,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-19 16:24:40,666 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:24:40,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:24:40,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1126982839, now seen corresponding path program 1 times [2021-12-19 16:24:40,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:24:40,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142421321] [2021-12-19 16:24:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:40,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:24:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:24:40,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:24:40,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:24:40,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142421321] [2021-12-19 16:24:40,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142421321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:24:40,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:24:40,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 16:24:40,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745591124] [2021-12-19 16:24:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:24:40,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 16:24:40,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:24:40,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 16:24:40,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:24:40,820 INFO L87 Difference]: Start difference. First operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:40,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:24:40,919 INFO L93 Difference]: Finished difference Result 715 states and 1205 transitions. [2021-12-19 16:24:40,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 16:24:40,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-19 16:24:40,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:24:40,931 INFO L225 Difference]: With dead ends: 715 [2021-12-19 16:24:40,932 INFO L226 Difference]: Without dead ends: 392 [2021-12-19 16:24:40,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:24:40,937 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 217 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:24:40,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 725 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:24:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-19 16:24:40,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 220. [2021-12-19 16:24:40,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 197 states have (on average 1.3299492385786802) internal successors, (262), 211 states have internal predecessors, (262), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 16:24:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 294 transitions. [2021-12-19 16:24:41,006 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 294 transitions. Word has length 6 [2021-12-19 16:24:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:24:41,007 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 294 transitions. [2021-12-19 16:24:41,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 294 transitions. [2021-12-19 16:24:41,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-19 16:24:41,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:24:41,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:24:41,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 16:24:41,015 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:24:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:24:41,017 INFO L85 PathProgramCache]: Analyzing trace with hash 765811442, now seen corresponding path program 1 times [2021-12-19 16:24:41,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:24:41,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640307273] [2021-12-19 16:24:41,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:41,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:24:41,189 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:24:41,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764854269] [2021-12-19 16:24:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:41,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:41,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:24:41,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:24:41,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 16:24:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:24:41,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 16:24:41,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:24:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:24:42,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:24:42,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:24:42,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640307273] [2021-12-19 16:24:42,202 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:24:42,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764854269] [2021-12-19 16:24:42,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764854269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:24:42,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:24:42,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 16:24:42,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594355718] [2021-12-19 16:24:42,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:24:42,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 16:24:42,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:24:42,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 16:24:42,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:24:42,205 INFO L87 Difference]: Start difference. First operand 220 states and 294 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:42,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:24:42,264 INFO L93 Difference]: Finished difference Result 455 states and 613 transitions. [2021-12-19 16:24:42,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 16:24:42,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-19 16:24:42,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:24:42,266 INFO L225 Difference]: With dead ends: 455 [2021-12-19 16:24:42,266 INFO L226 Difference]: Without dead ends: 241 [2021-12-19 16:24:42,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:24:42,268 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:24:42,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:24:42,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-19 16:24:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2021-12-19 16:24:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 217 states have (on average 1.2995391705069124) internal successors, (282), 231 states have internal predecessors, (282), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 16:24:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2021-12-19 16:24:42,276 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 103 [2021-12-19 16:24:42,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:24:42,277 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2021-12-19 16:24:42,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2021-12-19 16:24:42,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-19 16:24:42,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:24:42,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:24:42,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-19 16:24:42,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:42,507 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:24:42,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:24:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash 525571696, now seen corresponding path program 1 times [2021-12-19 16:24:42,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:24:42,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469825211] [2021-12-19 16:24:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:42,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:24:42,637 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:24:42,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075600664] [2021-12-19 16:24:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:42,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:42,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:24:42,652 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:24:42,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 16:24:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:24:43,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 16:24:43,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:24:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:24:43,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:24:43,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:24:43,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469825211] [2021-12-19 16:24:43,686 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:24:43,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075600664] [2021-12-19 16:24:43,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075600664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:24:43,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:24:43,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 16:24:43,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160082686] [2021-12-19 16:24:43,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:24:43,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 16:24:43,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:24:43,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 16:24:43,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:24:43,689 INFO L87 Difference]: Start difference. First operand 240 states and 314 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:24:43,734 INFO L93 Difference]: Finished difference Result 495 states and 653 transitions. [2021-12-19 16:24:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 16:24:43,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-19 16:24:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:24:43,736 INFO L225 Difference]: With dead ends: 495 [2021-12-19 16:24:43,736 INFO L226 Difference]: Without dead ends: 261 [2021-12-19 16:24:43,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:24:43,738 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:24:43,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:24:43,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-19 16:24:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-12-19 16:24:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 237 states have (on average 1.2742616033755274) internal successors, (302), 251 states have internal predecessors, (302), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 16:24:43,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 334 transitions. [2021-12-19 16:24:43,746 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 334 transitions. Word has length 103 [2021-12-19 16:24:43,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:24:43,746 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 334 transitions. [2021-12-19 16:24:43,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:43,747 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 334 transitions. [2021-12-19 16:24:43,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-19 16:24:43,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:24:43,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:24:43,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-19 16:24:43,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-19 16:24:43,968 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:24:43,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:24:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash 919938482, now seen corresponding path program 1 times [2021-12-19 16:24:43,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:24:43,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114909079] [2021-12-19 16:24:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:43,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:24:44,084 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:24:44,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556025355] [2021-12-19 16:24:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:44,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:44,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:24:44,086 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:24:44,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-19 16:24:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:24:45,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 16:24:45,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:24:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:24:45,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:24:45,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:24:45,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114909079] [2021-12-19 16:24:45,287 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:24:45,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556025355] [2021-12-19 16:24:45,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556025355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:24:45,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:24:45,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 16:24:45,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589880045] [2021-12-19 16:24:45,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:24:45,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 16:24:45,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:24:45,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 16:24:45,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 16:24:45,289 INFO L87 Difference]: Start difference. First operand 260 states and 334 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:45,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:24:45,343 INFO L93 Difference]: Finished difference Result 505 states and 653 transitions. [2021-12-19 16:24:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 16:24:45,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-19 16:24:45,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:24:45,344 INFO L225 Difference]: With dead ends: 505 [2021-12-19 16:24:45,344 INFO L226 Difference]: Without dead ends: 251 [2021-12-19 16:24:45,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 16:24:45,346 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 239 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:24:45,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 562 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:24:45,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-19 16:24:45,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 246. [2021-12-19 16:24:45,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 237 states have internal predecessors, (281), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 16:24:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2021-12-19 16:24:45,352 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 103 [2021-12-19 16:24:45,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:24:45,353 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2021-12-19 16:24:45,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:45,353 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2021-12-19 16:24:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-19 16:24:45,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:24:45,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:24:45,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-19 16:24:45,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:45,576 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:24:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:24:45,576 INFO L85 PathProgramCache]: Analyzing trace with hash 6087360, now seen corresponding path program 1 times [2021-12-19 16:24:45,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:24:45,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674707476] [2021-12-19 16:24:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:45,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:24:45,735 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:24:45,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689715776] [2021-12-19 16:24:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:45,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:45,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:24:45,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:24:45,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-19 16:24:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:24:46,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 16:24:46,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:24:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:24:47,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:24:47,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:24:47,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674707476] [2021-12-19 16:24:47,023 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:24:47,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689715776] [2021-12-19 16:24:47,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689715776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:24:47,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:24:47,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 16:24:47,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107218859] [2021-12-19 16:24:47,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:24:47,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 16:24:47,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:24:47,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 16:24:47,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 16:24:47,026 INFO L87 Difference]: Start difference. First operand 246 states and 313 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:47,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:24:47,089 INFO L93 Difference]: Finished difference Result 566 states and 720 transitions. [2021-12-19 16:24:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 16:24:47,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-19 16:24:47,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:24:47,093 INFO L225 Difference]: With dead ends: 566 [2021-12-19 16:24:47,093 INFO L226 Difference]: Without dead ends: 326 [2021-12-19 16:24:47,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 16:24:47,095 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 232 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:24:47,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 857 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:24:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-12-19 16:24:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 232. [2021-12-19 16:24:47,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 209 states have (on average 1.244019138755981) internal successors, (260), 223 states have internal predecessors, (260), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 16:24:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 292 transitions. [2021-12-19 16:24:47,107 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 292 transitions. Word has length 103 [2021-12-19 16:24:47,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:24:47,109 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 292 transitions. [2021-12-19 16:24:47,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:47,109 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 292 transitions. [2021-12-19 16:24:47,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-19 16:24:47,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:24:47,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:24:47,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-19 16:24:47,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:47,331 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:24:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:24:47,331 INFO L85 PathProgramCache]: Analyzing trace with hash 2030023538, now seen corresponding path program 1 times [2021-12-19 16:24:47,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:24:47,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327323932] [2021-12-19 16:24:47,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:47,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:24:47,476 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:24:47,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077303790] [2021-12-19 16:24:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:47,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:47,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:24:47,478 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:24:47,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-19 16:24:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:24:48,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 2930 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 16:24:48,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:24:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:24:48,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:24:48,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:24:48,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327323932] [2021-12-19 16:24:48,830 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:24:48,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077303790] [2021-12-19 16:24:48,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077303790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:24:48,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:24:48,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 16:24:48,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596891689] [2021-12-19 16:24:48,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:24:48,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 16:24:48,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:24:48,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 16:24:48,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 16:24:48,832 INFO L87 Difference]: Start difference. First operand 232 states and 292 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:48,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:24:48,903 INFO L93 Difference]: Finished difference Result 416 states and 516 transitions. [2021-12-19 16:24:48,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 16:24:48,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-19 16:24:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:24:48,906 INFO L225 Difference]: With dead ends: 416 [2021-12-19 16:24:48,907 INFO L226 Difference]: Without dead ends: 415 [2021-12-19 16:24:48,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 16:24:48,908 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 105 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 16:24:48,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 936 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 16:24:48,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-19 16:24:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 413. [2021-12-19 16:24:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 384 states have (on average 1.2213541666666667) internal successors, (469), 398 states have internal predecessors, (469), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-19 16:24:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 513 transitions. [2021-12-19 16:24:48,922 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 513 transitions. Word has length 103 [2021-12-19 16:24:48,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:24:48,923 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 513 transitions. [2021-12-19 16:24:48,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:48,923 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 513 transitions. [2021-12-19 16:24:48,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-19 16:24:48,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:24:48,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:24:48,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-19 16:24:49,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:49,140 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:24:49,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:24:49,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1493778997, now seen corresponding path program 1 times [2021-12-19 16:24:49,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:24:49,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290122264] [2021-12-19 16:24:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:49,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:24:49,254 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:24:49,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746464679] [2021-12-19 16:24:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:49,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:49,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:24:49,259 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:24:49,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-19 16:24:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:24:50,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 16:24:50,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:24:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:24:50,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:24:50,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:24:50,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290122264] [2021-12-19 16:24:50,898 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:24:50,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746464679] [2021-12-19 16:24:50,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746464679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:24:50,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:24:50,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 16:24:50,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908582870] [2021-12-19 16:24:50,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:24:50,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 16:24:50,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:24:50,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 16:24:50,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 16:24:50,900 INFO L87 Difference]: Start difference. First operand 413 states and 513 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:24:50,922 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2021-12-19 16:24:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 16:24:50,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-12-19 16:24:50,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:24:50,923 INFO L225 Difference]: With dead ends: 413 [2021-12-19 16:24:50,924 INFO L226 Difference]: Without dead ends: 412 [2021-12-19 16:24:50,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 16:24:50,924 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 135 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:24:50,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 553 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:24:50,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-12-19 16:24:50,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-12-19 16:24:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 384 states have (on average 1.21875) internal successors, (468), 397 states have internal predecessors, (468), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-19 16:24:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 512 transitions. [2021-12-19 16:24:50,933 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 512 transitions. Word has length 104 [2021-12-19 16:24:50,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:24:50,933 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 512 transitions. [2021-12-19 16:24:50,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:50,933 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 512 transitions. [2021-12-19 16:24:50,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-19 16:24:50,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:24:50,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:24:50,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-19 16:24:51,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:51,156 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:24:51,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:24:51,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1365413568, now seen corresponding path program 1 times [2021-12-19 16:24:51,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:24:51,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830439511] [2021-12-19 16:24:51,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:51,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:24:51,325 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:24:51,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246310375] [2021-12-19 16:24:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:51,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:51,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:24:51,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:24:51,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-19 16:24:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:24:52,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 16:24:52,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:24:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:24:53,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:24:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:24:53,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:24:53,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830439511] [2021-12-19 16:24:53,392 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:24:53,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246310375] [2021-12-19 16:24:53,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246310375] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:24:53,399 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:24:53,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-19 16:24:53,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489730372] [2021-12-19 16:24:53,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:24:53,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-19 16:24:53,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:24:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-19 16:24:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-19 16:24:53,401 INFO L87 Difference]: Start difference. First operand 412 states and 512 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:53,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:24:53,517 INFO L93 Difference]: Finished difference Result 634 states and 796 transitions. [2021-12-19 16:24:53,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 16:24:53,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-19 16:24:53,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:24:53,519 INFO L225 Difference]: With dead ends: 634 [2021-12-19 16:24:53,519 INFO L226 Difference]: Without dead ends: 600 [2021-12-19 16:24:53,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-19 16:24:53,521 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 647 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 16:24:53,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1523 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 16:24:53,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-19 16:24:53,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-12-19 16:24:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 566 states have (on average 1.2102473498233215) internal successors, (685), 579 states have internal predecessors, (685), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-19 16:24:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 741 transitions. [2021-12-19 16:24:53,535 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 741 transitions. Word has length 108 [2021-12-19 16:24:53,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:24:53,536 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 741 transitions. [2021-12-19 16:24:53,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:53,536 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 741 transitions. [2021-12-19 16:24:53,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-19 16:24:53,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:24:53,538 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:24:53,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-19 16:24:53,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:53,763 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:24:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:24:53,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1366065166, now seen corresponding path program 1 times [2021-12-19 16:24:53,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:24:53,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539687] [2021-12-19 16:24:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:53,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:24:53,884 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:24:53,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121619273] [2021-12-19 16:24:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:53,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:53,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:24:53,886 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:24:53,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-19 16:24:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:24:55,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 16:24:55,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:24:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:24:55,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:24:55,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:24:55,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539687] [2021-12-19 16:24:55,862 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:24:55,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121619273] [2021-12-19 16:24:55,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121619273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:24:55,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:24:55,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 16:24:55,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807189828] [2021-12-19 16:24:55,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:24:55,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 16:24:55,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:24:55,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 16:24:55,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:24:55,864 INFO L87 Difference]: Start difference. First operand 600 states and 741 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:24:55,895 INFO L93 Difference]: Finished difference Result 1140 states and 1414 transitions. [2021-12-19 16:24:55,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 16:24:55,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-19 16:24:55,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:24:55,898 INFO L225 Difference]: With dead ends: 1140 [2021-12-19 16:24:55,898 INFO L226 Difference]: Without dead ends: 598 [2021-12-19 16:24:55,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:24:55,899 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 15 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:24:55,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 534 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:24:55,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-19 16:24:55,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-12-19 16:24:55,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 577 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-19 16:24:55,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 738 transitions. [2021-12-19 16:24:55,910 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 738 transitions. Word has length 108 [2021-12-19 16:24:55,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:24:55,910 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 738 transitions. [2021-12-19 16:24:55,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:24:55,911 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 738 transitions. [2021-12-19 16:24:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-19 16:24:55,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:24:55,912 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:24:55,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-19 16:24:56,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-19 16:24:56,139 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:24:56,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:24:56,139 INFO L85 PathProgramCache]: Analyzing trace with hash -321867117, now seen corresponding path program 1 times [2021-12-19 16:24:56,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:24:56,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293169325] [2021-12-19 16:24:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:56,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:24:56,227 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:24:56,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57847484] [2021-12-19 16:24:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:56,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:56,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:24:56,229 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:24:56,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-19 16:24:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:24:57,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 2097 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 16:24:57,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:24:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-19 16:24:58,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:24:58,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:24:58,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293169325] [2021-12-19 16:24:58,340 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:24:58,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57847484] [2021-12-19 16:24:58,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57847484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:24:58,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:24:58,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 16:24:58,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093086545] [2021-12-19 16:24:58,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:24:58,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 16:24:58,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:24:58,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 16:24:58,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:24:58,341 INFO L87 Difference]: Start difference. First operand 598 states and 738 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-19 16:24:58,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:24:58,370 INFO L93 Difference]: Finished difference Result 1049 states and 1302 transitions. [2021-12-19 16:24:58,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 16:24:58,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 123 [2021-12-19 16:24:58,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:24:58,374 INFO L225 Difference]: With dead ends: 1049 [2021-12-19 16:24:58,374 INFO L226 Difference]: Without dead ends: 596 [2021-12-19 16:24:58,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:24:58,375 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 57 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:24:58,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 536 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:24:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-19 16:24:58,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-12-19 16:24:58,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 562 states have (on average 1.208185053380783) internal successors, (679), 575 states have internal predecessors, (679), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-19 16:24:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 735 transitions. [2021-12-19 16:24:58,391 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 735 transitions. Word has length 123 [2021-12-19 16:24:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:24:58,392 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 735 transitions. [2021-12-19 16:24:58,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-19 16:24:58,392 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 735 transitions. [2021-12-19 16:24:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-19 16:24:58,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:24:58,393 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:24:58,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-19 16:24:58,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-19 16:24:58,613 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:24:58,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:24:58,613 INFO L85 PathProgramCache]: Analyzing trace with hash 623227202, now seen corresponding path program 1 times [2021-12-19 16:24:58,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:24:58,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494687011] [2021-12-19 16:24:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:58,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:24:58,666 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:24:58,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734144541] [2021-12-19 16:24:58,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:24:58,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:24:58,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:24:58,688 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:24:58,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-19 16:25:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:25:00,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 16:25:00,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:25:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-19 16:25:00,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:25:00,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:25:00,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494687011] [2021-12-19 16:25:00,488 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:25:00,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734144541] [2021-12-19 16:25:00,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734144541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:25:00,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:25:00,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 16:25:00,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022740514] [2021-12-19 16:25:00,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:25:00,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 16:25:00,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:25:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 16:25:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 16:25:00,490 INFO L87 Difference]: Start difference. First operand 596 states and 735 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 16:25:00,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:25:00,525 INFO L93 Difference]: Finished difference Result 1143 states and 1433 transitions. [2021-12-19 16:25:00,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 16:25:00,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2021-12-19 16:25:00,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:25:00,528 INFO L225 Difference]: With dead ends: 1143 [2021-12-19 16:25:00,528 INFO L226 Difference]: Without dead ends: 599 [2021-12-19 16:25:00,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 16:25:00,529 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 2 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:25:00,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 806 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:25:00,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-12-19 16:25:00,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-12-19 16:25:00,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 578 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-19 16:25:00,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2021-12-19 16:25:00,542 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 138 [2021-12-19 16:25:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:25:00,542 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2021-12-19 16:25:00,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 16:25:00,542 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2021-12-19 16:25:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-19 16:25:00,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:25:00,544 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:25:00,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-19 16:25:00,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-19 16:25:00,784 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:25:00,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:25:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash -268398914, now seen corresponding path program 1 times [2021-12-19 16:25:00,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:25:00,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570129977] [2021-12-19 16:25:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:00,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:25:00,841 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:25:00,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077947143] [2021-12-19 16:25:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:00,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:25:00,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:25:00,843 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:25:00,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-19 16:25:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:25:02,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-19 16:25:02,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:25:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-19 16:25:03,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:25:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-19 16:25:03,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:25:03,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570129977] [2021-12-19 16:25:03,367 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:25:03,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077947143] [2021-12-19 16:25:03,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077947143] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:25:03,367 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:25:03,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-19 16:25:03,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236024872] [2021-12-19 16:25:03,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:25:03,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-19 16:25:03,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:25:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-19 16:25:03,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-19 16:25:03,369 INFO L87 Difference]: Start difference. First operand 599 states and 744 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-19 16:25:03,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:25:03,500 INFO L93 Difference]: Finished difference Result 1157 states and 1475 transitions. [2021-12-19 16:25:03,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 16:25:03,500 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 142 [2021-12-19 16:25:03,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:25:03,503 INFO L225 Difference]: With dead ends: 1157 [2021-12-19 16:25:03,503 INFO L226 Difference]: Without dead ends: 608 [2021-12-19 16:25:03,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-19 16:25:03,504 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 20 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 16:25:03,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1058 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 16:25:03,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-12-19 16:25:03,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2021-12-19 16:25:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.2132867132867133) internal successors, (694), 586 states have internal predecessors, (694), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (40), 19 states have call predecessors, (40), 28 states have call successors, (40) [2021-12-19 16:25:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 762 transitions. [2021-12-19 16:25:03,522 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 762 transitions. Word has length 142 [2021-12-19 16:25:03,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:25:03,523 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 762 transitions. [2021-12-19 16:25:03,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-19 16:25:03,523 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 762 transitions. [2021-12-19 16:25:03,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-19 16:25:03,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:25:03,524 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:25:03,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-19 16:25:03,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-19 16:25:03,752 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:25:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:25:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash -150155646, now seen corresponding path program 2 times [2021-12-19 16:25:03,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:25:03,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959923952] [2021-12-19 16:25:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:03,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:25:03,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:25:03,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627365917] [2021-12-19 16:25:03,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 16:25:03,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:25:03,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:25:03,806 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:25:03,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-19 16:25:05,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 16:25:05,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 16:25:05,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-19 16:25:05,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:25:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 83 proven. 40 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-19 16:25:06,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:25:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-19 16:25:06,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:25:06,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959923952] [2021-12-19 16:25:06,501 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:25:06,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627365917] [2021-12-19 16:25:06,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627365917] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:25:06,501 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:25:06,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2021-12-19 16:25:06,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17262659] [2021-12-19 16:25:06,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:25:06,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-19 16:25:06,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:25:06,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-19 16:25:06,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-12-19 16:25:06,503 INFO L87 Difference]: Start difference. First operand 608 states and 762 transitions. Second operand has 15 states, 15 states have (on average 9.6) internal successors, (144), 15 states have internal predecessors, (144), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-19 16:25:06,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:25:06,957 INFO L93 Difference]: Finished difference Result 1214 states and 1566 transitions. [2021-12-19 16:25:06,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-19 16:25:06,958 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.6) internal successors, (144), 15 states have internal predecessors, (144), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2021-12-19 16:25:06,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:25:06,960 INFO L225 Difference]: With dead ends: 1214 [2021-12-19 16:25:06,960 INFO L226 Difference]: Without dead ends: 610 [2021-12-19 16:25:06,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-12-19 16:25:06,961 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 266 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-19 16:25:06,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 1846 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-19 16:25:06,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-12-19 16:25:06,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 605. [2021-12-19 16:25:06,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 569 states have (on average 1.2091388400702987) internal successors, (688), 583 states have internal predecessors, (688), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-19 16:25:06,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 750 transitions. [2021-12-19 16:25:06,977 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 750 transitions. Word has length 150 [2021-12-19 16:25:06,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:25:06,978 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 750 transitions. [2021-12-19 16:25:06,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.6) internal successors, (144), 15 states have internal predecessors, (144), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-19 16:25:06,978 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 750 transitions. [2021-12-19 16:25:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-19 16:25:06,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:25:06,979 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:25:07,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-19 16:25:07,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-19 16:25:07,195 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:25:07,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:25:07,196 INFO L85 PathProgramCache]: Analyzing trace with hash -163132222, now seen corresponding path program 3 times [2021-12-19 16:25:07,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:25:07,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831220491] [2021-12-19 16:25:07,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:07,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:25:07,268 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:25:07,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1093704012] [2021-12-19 16:25:07,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 16:25:07,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:25:07,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:25:07,269 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:25:07,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-19 16:25:09,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-19 16:25:09,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 16:25:09,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 16:25:09,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:25:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 16:25:09,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:25:09,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:25:09,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831220491] [2021-12-19 16:25:09,291 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:25:09,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093704012] [2021-12-19 16:25:09,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093704012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:25:09,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:25:09,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 16:25:09,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038463945] [2021-12-19 16:25:09,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:25:09,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 16:25:09,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:25:09,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 16:25:09,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-19 16:25:09,293 INFO L87 Difference]: Start difference. First operand 605 states and 750 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-19 16:25:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:25:09,359 INFO L93 Difference]: Finished difference Result 605 states and 750 transitions. [2021-12-19 16:25:09,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 16:25:09,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 162 [2021-12-19 16:25:09,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:25:09,361 INFO L225 Difference]: With dead ends: 605 [2021-12-19 16:25:09,362 INFO L226 Difference]: Without dead ends: 604 [2021-12-19 16:25:09,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-19 16:25:09,362 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 341 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:25:09,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 1316 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:25:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-12-19 16:25:09,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2021-12-19 16:25:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 569 states have (on average 1.2056239015817223) internal successors, (686), 582 states have internal predecessors, (686), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-19 16:25:09,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 748 transitions. [2021-12-19 16:25:09,374 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 748 transitions. Word has length 162 [2021-12-19 16:25:09,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:25:09,374 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 748 transitions. [2021-12-19 16:25:09,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-19 16:25:09,374 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 748 transitions. [2021-12-19 16:25:09,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-12-19 16:25:09,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:25:09,378 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:25:09,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-19 16:25:09,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-19 16:25:09,606 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:25:09,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:25:09,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1007231856, now seen corresponding path program 1 times [2021-12-19 16:25:09,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:25:09,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877234691] [2021-12-19 16:25:09,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:09,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:25:09,863 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:25:09,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733597765] [2021-12-19 16:25:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:09,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:25:09,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:25:09,868 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:25:09,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-19 16:25:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:25:12,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 7364 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 16:25:12,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:25:13,392 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 16:25:13,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:25:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 16:25:13,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:25:13,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877234691] [2021-12-19 16:25:13,942 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:25:13,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733597765] [2021-12-19 16:25:13,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733597765] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:25:13,942 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:25:13,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-19 16:25:13,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53780316] [2021-12-19 16:25:13,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:25:13,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-19 16:25:13,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:25:13,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-19 16:25:13,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-19 16:25:13,944 INFO L87 Difference]: Start difference. First operand 604 states and 748 transitions. Second operand has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-19 16:25:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:25:14,084 INFO L93 Difference]: Finished difference Result 816 states and 1023 transitions. [2021-12-19 16:25:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 16:25:14,085 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 361 [2021-12-19 16:25:14,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:25:14,088 INFO L225 Difference]: With dead ends: 816 [2021-12-19 16:25:14,088 INFO L226 Difference]: Without dead ends: 815 [2021-12-19 16:25:14,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-12-19 16:25:14,089 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 704 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 16:25:14,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 1813 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 16:25:14,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-12-19 16:25:14,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 603. [2021-12-19 16:25:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 569 states have (on average 1.2038664323374342) internal successors, (685), 581 states have internal predecessors, (685), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-19 16:25:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 747 transitions. [2021-12-19 16:25:14,101 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 747 transitions. Word has length 361 [2021-12-19 16:25:14,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:25:14,102 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 747 transitions. [2021-12-19 16:25:14,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-19 16:25:14,102 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 747 transitions. [2021-12-19 16:25:14,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-12-19 16:25:14,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:25:14,105 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:25:14,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-19 16:25:14,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:25:14,331 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:25:14,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:25:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash -806794526, now seen corresponding path program 1 times [2021-12-19 16:25:14,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:25:14,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681773893] [2021-12-19 16:25:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:14,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:25:14,674 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:25:14,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220512691] [2021-12-19 16:25:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:14,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:25:14,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:25:14,676 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:25:14,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-19 16:25:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:25:17,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 7388 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-19 16:25:17,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:25:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 16:25:18,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:25:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 16:25:19,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:25:19,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681773893] [2021-12-19 16:25:19,069 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:25:19,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220512691] [2021-12-19 16:25:19,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220512691] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:25:19,070 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:25:19,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-12-19 16:25:19,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580796303] [2021-12-19 16:25:19,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:25:19,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-19 16:25:19,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:25:19,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-19 16:25:19,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-19 16:25:19,071 INFO L87 Difference]: Start difference. First operand 603 states and 747 transitions. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-19 16:25:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:25:19,281 INFO L93 Difference]: Finished difference Result 1368 states and 1699 transitions. [2021-12-19 16:25:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-19 16:25:19,282 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 366 [2021-12-19 16:25:19,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:25:19,286 INFO L225 Difference]: With dead ends: 1368 [2021-12-19 16:25:19,286 INFO L226 Difference]: Without dead ends: 1335 [2021-12-19 16:25:19,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-12-19 16:25:19,287 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 2346 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 16:25:19,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2384 Valid, 2650 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 16:25:19,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-12-19 16:25:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1335. [2021-12-19 16:25:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1277 states have (on average 1.1942051683633517) internal successors, (1525), 1289 states have internal predecessors, (1525), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-12-19 16:25:19,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1643 transitions. [2021-12-19 16:25:19,313 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1643 transitions. Word has length 366 [2021-12-19 16:25:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:25:19,314 INFO L470 AbstractCegarLoop]: Abstraction has 1335 states and 1643 transitions. [2021-12-19 16:25:19,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-19 16:25:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1643 transitions. [2021-12-19 16:25:19,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2021-12-19 16:25:19,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:25:19,326 INFO L514 BasicCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:25:19,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-19 16:25:19,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-19 16:25:19,547 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:25:19,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:25:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1035654022, now seen corresponding path program 2 times [2021-12-19 16:25:19,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:25:19,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258754447] [2021-12-19 16:25:19,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:19,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:25:20,088 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:25:20,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094957023] [2021-12-19 16:25:20,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 16:25:20,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:25:20,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:25:20,103 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:25:20,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-19 16:25:24,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-19 16:25:24,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 16:25:24,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 16:25:24,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:25:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2521 trivial. 0 not checked. [2021-12-19 16:25:25,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:25:25,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:25:25,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258754447] [2021-12-19 16:25:25,321 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:25:25,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094957023] [2021-12-19 16:25:25,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094957023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:25:25,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:25:25,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 16:25:25,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917827767] [2021-12-19 16:25:25,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:25:25,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 16:25:25,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:25:25,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 16:25:25,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 16:25:25,323 INFO L87 Difference]: Start difference. First operand 1335 states and 1643 transitions. Second operand has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-19 16:25:25,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:25:25,367 INFO L93 Difference]: Finished difference Result 1361 states and 1689 transitions. [2021-12-19 16:25:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 16:25:25,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 774 [2021-12-19 16:25:25,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:25:25,373 INFO L225 Difference]: With dead ends: 1361 [2021-12-19 16:25:25,373 INFO L226 Difference]: Without dead ends: 1360 [2021-12-19 16:25:25,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 16:25:25,374 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 109 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:25:25,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 570 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:25:25,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2021-12-19 16:25:25,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1337. [2021-12-19 16:25:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1279 states have (on average 1.1939014855355747) internal successors, (1527), 1291 states have internal predecessors, (1527), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-12-19 16:25:25,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1645 transitions. [2021-12-19 16:25:25,400 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1645 transitions. Word has length 774 [2021-12-19 16:25:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:25:25,400 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 1645 transitions. [2021-12-19 16:25:25,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-19 16:25:25,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1645 transitions. [2021-12-19 16:25:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2021-12-19 16:25:25,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:25:25,406 INFO L514 BasicCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:25:25,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-19 16:25:25,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-19 16:25:25,627 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:25:25,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:25:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2040504391, now seen corresponding path program 1 times [2021-12-19 16:25:25,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:25:25,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14389142] [2021-12-19 16:25:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:25,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:25:26,369 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:25:26,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349044298] [2021-12-19 16:25:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:26,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:25:26,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:25:26,374 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:25:26,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-19 16:25:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:25:33,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 18989 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-19 16:25:33,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:25:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 16:25:34,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:25:35,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 16:25:35,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:25:35,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14389142] [2021-12-19 16:25:35,832 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:25:35,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349044298] [2021-12-19 16:25:35,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349044298] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:25:35,832 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:25:35,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-12-19 16:25:35,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527283771] [2021-12-19 16:25:35,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:25:35,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-19 16:25:35,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:25:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-19 16:25:35,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-12-19 16:25:35,835 INFO L87 Difference]: Start difference. First operand 1337 states and 1645 transitions. Second operand has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-19 16:25:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:25:36,166 INFO L93 Difference]: Finished difference Result 1921 states and 2374 transitions. [2021-12-19 16:25:36,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-19 16:25:36,166 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 775 [2021-12-19 16:25:36,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:25:36,172 INFO L225 Difference]: With dead ends: 1921 [2021-12-19 16:25:36,172 INFO L226 Difference]: Without dead ends: 1886 [2021-12-19 16:25:36,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1528 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-12-19 16:25:36,174 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 2723 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2775 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 16:25:36,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2775 Valid, 4044 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 16:25:36,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-12-19 16:25:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1886. [2021-12-19 16:25:36,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1810 states have (on average 1.1917127071823204) internal successors, (2157), 1822 states have internal predecessors, (2157), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-12-19 16:25:36,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2317 transitions. [2021-12-19 16:25:36,207 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2317 transitions. Word has length 775 [2021-12-19 16:25:36,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:25:36,207 INFO L470 AbstractCegarLoop]: Abstraction has 1886 states and 2317 transitions. [2021-12-19 16:25:36,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-19 16:25:36,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2317 transitions. [2021-12-19 16:25:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2021-12-19 16:25:36,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:25:36,218 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:25:36,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-19 16:25:36,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-19 16:25:36,428 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:25:36,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:25:36,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1548217332, now seen corresponding path program 2 times [2021-12-19 16:25:36,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:25:36,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530637714] [2021-12-19 16:25:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:36,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:25:37,543 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:25:37,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527763390] [2021-12-19 16:25:37,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 16:25:37,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:25:37,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:25:37,545 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:25:37,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-19 16:25:44,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-19 16:25:44,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 16:25:44,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 16:25:44,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:25:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 16:25:45,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:25:45,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:25:45,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530637714] [2021-12-19 16:25:45,231 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:25:45,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527763390] [2021-12-19 16:25:45,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527763390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:25:45,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:25:45,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 16:25:45,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377753182] [2021-12-19 16:25:45,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:25:45,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 16:25:45,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:25:45,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 16:25:45,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 16:25:45,233 INFO L87 Difference]: Start difference. First operand 1886 states and 2317 transitions. Second operand has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-19 16:25:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:25:45,281 INFO L93 Difference]: Finished difference Result 1886 states and 2317 transitions. [2021-12-19 16:25:45,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 16:25:45,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1081 [2021-12-19 16:25:45,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:25:45,287 INFO L225 Difference]: With dead ends: 1886 [2021-12-19 16:25:45,287 INFO L226 Difference]: Without dead ends: 1885 [2021-12-19 16:25:45,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 16:25:45,288 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 144 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:25:45,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 478 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:25:45,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2021-12-19 16:25:45,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1885. [2021-12-19 16:25:45,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1810 states have (on average 1.1911602209944752) internal successors, (2156), 1821 states have internal predecessors, (2156), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-12-19 16:25:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2316 transitions. [2021-12-19 16:25:45,506 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2316 transitions. Word has length 1081 [2021-12-19 16:25:45,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:25:45,506 INFO L470 AbstractCegarLoop]: Abstraction has 1885 states and 2316 transitions. [2021-12-19 16:25:45,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-19 16:25:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2316 transitions. [2021-12-19 16:25:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2021-12-19 16:25:45,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:25:45,518 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:25:45,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-19 16:25:45,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:25:45,732 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:25:45,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:25:45,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1705709209, now seen corresponding path program 1 times [2021-12-19 16:25:45,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:25:45,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550743002] [2021-12-19 16:25:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:45,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:25:46,687 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:25:46,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965742696] [2021-12-19 16:25:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:25:46,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:25:46,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:25:46,689 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:25:46,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-19 16:25:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:25:58,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 27724 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 16:25:58,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:25:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 16:25:59,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:26:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 16:26:00,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:26:00,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550743002] [2021-12-19 16:26:00,890 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:26:00,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965742696] [2021-12-19 16:26:00,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965742696] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:26:00,898 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:26:00,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-12-19 16:26:00,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332251371] [2021-12-19 16:26:00,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:26:00,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-19 16:26:00,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:26:00,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-19 16:26:00,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-19 16:26:00,901 INFO L87 Difference]: Start difference. First operand 1885 states and 2316 transitions. Second operand has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-19 16:26:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:26:01,232 INFO L93 Difference]: Finished difference Result 1977 states and 2467 transitions. [2021-12-19 16:26:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-19 16:26:01,233 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1092 [2021-12-19 16:26:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:26:01,238 INFO L225 Difference]: With dead ends: 1977 [2021-12-19 16:26:01,238 INFO L226 Difference]: Without dead ends: 1976 [2021-12-19 16:26:01,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2189 GetRequests, 2174 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-12-19 16:26:01,239 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 632 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 16:26:01,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 1322 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 16:26:01,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-12-19 16:26:01,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1975. [2021-12-19 16:26:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1867 states have (on average 1.2013926084627744) internal successors, (2243), 1908 states have internal predecessors, (2243), 100 states have call successors, (100), 6 states have call predecessors, (100), 7 states have return successors, (120), 64 states have call predecessors, (120), 100 states have call successors, (120) [2021-12-19 16:26:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2463 transitions. [2021-12-19 16:26:01,273 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2463 transitions. Word has length 1092 [2021-12-19 16:26:01,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:26:01,273 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 2463 transitions. [2021-12-19 16:26:01,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-19 16:26:01,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2463 transitions. [2021-12-19 16:26:01,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2021-12-19 16:26:01,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:26:01,284 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:26:01,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-19 16:26:01,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:26:01,495 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:26:01,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:26:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1126992129, now seen corresponding path program 2 times [2021-12-19 16:26:01,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:26:01,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294691854] [2021-12-19 16:26:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:26:01,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:26:02,721 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:26:02,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805249407] [2021-12-19 16:26:02,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 16:26:02,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:26:02,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:26:02,723 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:26:02,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-19 16:26:15,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 16:26:15,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 16:26:15,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 27832 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-19 16:26:15,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:26:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 16:26:16,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:26:17,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4984 trivial. 0 not checked. [2021-12-19 16:26:17,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:26:17,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294691854] [2021-12-19 16:26:17,699 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:26:17,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805249407] [2021-12-19 16:26:17,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805249407] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:26:17,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:26:17,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-12-19 16:26:17,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21019405] [2021-12-19 16:26:17,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:26:17,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-19 16:26:17,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:26:17,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-19 16:26:17,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-19 16:26:17,702 INFO L87 Difference]: Start difference. First operand 1975 states and 2463 transitions. Second operand has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-12-19 16:26:18,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:26:18,516 INFO L93 Difference]: Finished difference Result 2157 states and 2764 transitions. [2021-12-19 16:26:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-19 16:26:18,517 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 1128 [2021-12-19 16:26:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:26:18,524 INFO L225 Difference]: With dead ends: 2157 [2021-12-19 16:26:18,524 INFO L226 Difference]: Without dead ends: 2156 [2021-12-19 16:26:18,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2273 GetRequests, 2234 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-12-19 16:26:18,526 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1133 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-19 16:26:18,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 1068 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-19 16:26:18,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-12-19 16:26:18,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 2155. [2021-12-19 16:26:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1981 states have (on average 1.220090863200404) internal successors, (2417), 2082 states have internal predecessors, (2417), 160 states have call successors, (160), 12 states have call predecessors, (160), 13 states have return successors, (180), 70 states have call predecessors, (180), 160 states have call successors, (180) [2021-12-19 16:26:18,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2757 transitions. [2021-12-19 16:26:18,584 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2757 transitions. Word has length 1128 [2021-12-19 16:26:18,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:26:18,585 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2757 transitions. [2021-12-19 16:26:18,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-12-19 16:26:18,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2757 transitions. [2021-12-19 16:26:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2021-12-19 16:26:18,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:26:18,601 INFO L514 BasicCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:26:18,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-19 16:26:18,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-19 16:26:18,824 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:26:18,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:26:18,824 INFO L85 PathProgramCache]: Analyzing trace with hash -124501551, now seen corresponding path program 3 times [2021-12-19 16:26:18,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:26:18,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233907289] [2021-12-19 16:26:18,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:26:18,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:26:20,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:26:20,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85290395] [2021-12-19 16:26:20,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 16:26:20,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:26:20,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:26:20,060 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:26:20,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-19 16:26:30,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-19 16:26:30,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 16:26:30,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 16:26:30,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:26:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5520 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 5419 trivial. 0 not checked. [2021-12-19 16:26:32,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:26:32,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:26:32,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233907289] [2021-12-19 16:26:32,424 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:26:32,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85290395] [2021-12-19 16:26:32,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85290395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:26:32,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:26:32,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 16:26:32,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607314090] [2021-12-19 16:26:32,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:26:32,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 16:26:32,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:26:32,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 16:26:32,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-19 16:26:32,426 INFO L87 Difference]: Start difference. First operand 2155 states and 2757 transitions. Second operand has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-19 16:26:32,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:26:32,559 INFO L93 Difference]: Finished difference Result 2472 states and 3244 transitions. [2021-12-19 16:26:32,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 16:26:32,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1200 [2021-12-19 16:26:32,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:26:32,567 INFO L225 Difference]: With dead ends: 2472 [2021-12-19 16:26:32,567 INFO L226 Difference]: Without dead ends: 2471 [2021-12-19 16:26:32,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-19 16:26:32,569 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 464 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 16:26:32,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 526 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 16:26:32,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2021-12-19 16:26:32,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2398. [2021-12-19 16:26:32,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2152 states have (on average 1.2444237918215613) internal successors, (2678), 2307 states have internal predecessors, (2678), 223 states have call successors, (223), 21 states have call predecessors, (223), 22 states have return successors, (243), 79 states have call predecessors, (243), 223 states have call successors, (243) [2021-12-19 16:26:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3144 transitions. [2021-12-19 16:26:32,648 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3144 transitions. Word has length 1200 [2021-12-19 16:26:32,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:26:32,649 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 3144 transitions. [2021-12-19 16:26:32,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-19 16:26:32,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3144 transitions. [2021-12-19 16:26:32,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2021-12-19 16:26:32,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:26:32,666 INFO L514 BasicCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:26:32,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-19 16:26:32,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-19 16:26:32,890 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:26:32,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:26:32,891 INFO L85 PathProgramCache]: Analyzing trace with hash -466116856, now seen corresponding path program 1 times [2021-12-19 16:26:32,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:26:32,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630773850] [2021-12-19 16:26:32,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:26:32,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:26:34,009 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:26:34,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559858802] [2021-12-19 16:26:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:26:34,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:26:34,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:26:34,036 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:26:34,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-19 16:26:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:26:49,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 28050 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-19 16:26:49,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:26:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 16:26:51,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:26:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 5140 trivial. 0 not checked. [2021-12-19 16:26:53,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:26:53,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630773850] [2021-12-19 16:26:53,362 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:26:53,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559858802] [2021-12-19 16:26:53,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559858802] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:26:53,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:26:53,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2021-12-19 16:26:53,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945422553] [2021-12-19 16:26:53,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:26:53,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-19 16:26:53,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:26:53,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-19 16:26:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-12-19 16:26:53,365 INFO L87 Difference]: Start difference. First operand 2398 states and 3144 transitions. Second operand has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-19 16:26:55,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:26:55,169 INFO L93 Difference]: Finished difference Result 3115 states and 4312 transitions. [2021-12-19 16:26:55,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-12-19 16:26:55,170 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 1201 [2021-12-19 16:26:55,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:26:55,179 INFO L225 Difference]: With dead ends: 3115 [2021-12-19 16:26:55,179 INFO L226 Difference]: Without dead ends: 3114 [2021-12-19 16:26:55,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2443 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-12-19 16:26:55,182 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 3731 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 1753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 3775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1753 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:26:55,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3741 Valid, 1382 Invalid, 3775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1753 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-19 16:26:55,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-12-19 16:26:55,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 3094. [2021-12-19 16:26:55,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 2608 states have (on average 1.2937116564417177) internal successors, (3374), 2967 states have internal predecessors, (3374), 439 states have call successors, (439), 45 states have call predecessors, (439), 46 states have return successors, (459), 103 states have call predecessors, (459), 439 states have call successors, (459) [2021-12-19 16:26:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 4272 transitions. [2021-12-19 16:26:55,261 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 4272 transitions. Word has length 1201 [2021-12-19 16:26:55,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:26:55,262 INFO L470 AbstractCegarLoop]: Abstraction has 3094 states and 4272 transitions. [2021-12-19 16:26:55,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-19 16:26:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 4272 transitions. [2021-12-19 16:26:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2021-12-19 16:26:55,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:26:55,279 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:26:55,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-19 16:26:55,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:26:55,495 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:26:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:26:55,496 INFO L85 PathProgramCache]: Analyzing trace with hash 852316520, now seen corresponding path program 2 times [2021-12-19 16:26:55,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:26:55,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140322856] [2021-12-19 16:26:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:26:55,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:26:56,652 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:26:56,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616616062] [2021-12-19 16:26:56,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 16:26:56,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:26:56,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:26:56,654 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:26:56,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-19 16:27:13,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 16:27:13,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 16:27:13,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 28482 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-19 16:27:14,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:27:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 16:27:16,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:27:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 5884 trivial. 0 not checked. [2021-12-19 16:27:18,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:27:18,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140322856] [2021-12-19 16:27:18,521 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:27:18,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616616062] [2021-12-19 16:27:18,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616616062] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:27:18,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:27:18,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2021-12-19 16:27:18,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960582230] [2021-12-19 16:27:18,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:27:18,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-19 16:27:18,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:27:18,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-19 16:27:18,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-12-19 16:27:18,526 INFO L87 Difference]: Start difference. First operand 3094 states and 4272 transitions. Second operand has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-12-19 16:27:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:27:24,408 INFO L93 Difference]: Finished difference Result 4507 states and 6580 transitions. [2021-12-19 16:27:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-12-19 16:27:24,408 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) Word has length 1345 [2021-12-19 16:27:24,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:27:24,432 INFO L225 Difference]: With dead ends: 4507 [2021-12-19 16:27:24,433 INFO L226 Difference]: Without dead ends: 4506 [2021-12-19 16:27:24,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2779 GetRequests, 2596 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-12-19 16:27:24,439 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 7913 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 5208 mSolverCounterSat, 4105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7923 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 9313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4105 IncrementalHoareTripleChecker+Valid, 5208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-19 16:27:24,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7923 Valid, 2065 Invalid, 9313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4105 Valid, 5208 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-19 16:27:24,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-12-19 16:27:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4486. [2021-12-19 16:27:24,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 3520 states have (on average 1.3539772727272728) internal successors, (4766), 4287 states have internal predecessors, (4766), 871 states have call successors, (871), 93 states have call predecessors, (871), 94 states have return successors, (891), 151 states have call predecessors, (891), 871 states have call successors, (891) [2021-12-19 16:27:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 6528 transitions. [2021-12-19 16:27:24,556 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 6528 transitions. Word has length 1345 [2021-12-19 16:27:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:27:24,557 INFO L470 AbstractCegarLoop]: Abstraction has 4486 states and 6528 transitions. [2021-12-19 16:27:24,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-12-19 16:27:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 6528 transitions. [2021-12-19 16:27:24,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1634 [2021-12-19 16:27:24,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:27:24,582 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:27:24,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-19 16:27:24,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:27:24,801 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:27:24,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:27:24,802 INFO L85 PathProgramCache]: Analyzing trace with hash -350980568, now seen corresponding path program 3 times [2021-12-19 16:27:24,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:27:24,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688665594] [2021-12-19 16:27:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:27:24,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:27:25,956 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:27:25,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825628484] [2021-12-19 16:27:25,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 16:27:25,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:27:25,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:27:25,958 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:27:25,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-19 16:27:41,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-19 16:27:41,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 16:27:41,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 16:27:41,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:27:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 17427 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 16975 trivial. 0 not checked. [2021-12-19 16:27:43,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:27:43,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:27:43,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688665594] [2021-12-19 16:27:43,361 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:27:43,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825628484] [2021-12-19 16:27:43,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825628484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:27:43,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:27:43,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 16:27:43,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412245416] [2021-12-19 16:27:43,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:27:43,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 16:27:43,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:27:43,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 16:27:43,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-19 16:27:43,363 INFO L87 Difference]: Start difference. First operand 4486 states and 6528 transitions. Second operand has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-19 16:27:43,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:27:43,863 INFO L93 Difference]: Finished difference Result 7361 states and 11014 transitions. [2021-12-19 16:27:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-19 16:27:43,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1633 [2021-12-19 16:27:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:27:43,881 INFO L225 Difference]: With dead ends: 7361 [2021-12-19 16:27:43,882 INFO L226 Difference]: Without dead ends: 7360 [2021-12-19 16:27:43,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1641 GetRequests, 1632 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-19 16:27:43,887 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 282 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 16:27:43,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 716 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 16:27:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7360 states. [2021-12-19 16:27:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7360 to 6897. [2021-12-19 16:27:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6897 states, 5227 states have (on average 1.4105605509852688) internal successors, (7373), 6519 states have internal predecessors, (7373), 1486 states have call successors, (1486), 182 states have call predecessors, (1486), 183 states have return successors, (1506), 240 states have call predecessors, (1506), 1486 states have call successors, (1506) [2021-12-19 16:27:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6897 states to 6897 states and 10365 transitions. [2021-12-19 16:27:44,177 INFO L78 Accepts]: Start accepts. Automaton has 6897 states and 10365 transitions. Word has length 1633 [2021-12-19 16:27:44,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:27:44,181 INFO L470 AbstractCegarLoop]: Abstraction has 6897 states and 10365 transitions. [2021-12-19 16:27:44,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-19 16:27:44,182 INFO L276 IsEmpty]: Start isEmpty. Operand 6897 states and 10365 transitions. [2021-12-19 16:27:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2021-12-19 16:27:44,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:27:44,212 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:27:44,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-19 16:27:44,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-19 16:27:44,439 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:27:44,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:27:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash 28478646, now seen corresponding path program 1 times [2021-12-19 16:27:44,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:27:44,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341971670] [2021-12-19 16:27:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:27:44,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:27:45,685 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:27:45,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92257242] [2021-12-19 16:27:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:27:45,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:27:45,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:27:45,686 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:27:45,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-19 16:28:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:28:05,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 29350 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-19 16:28:05,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:28:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 17384 backedges. 0 proven. 12424 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 16:28:09,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:28:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 17384 backedges. 0 proven. 8284 refuted. 0 times theorem prover too weak. 9100 trivial. 0 not checked. [2021-12-19 16:28:15,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:28:15,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341971670] [2021-12-19 16:28:15,617 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:28:15,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92257242] [2021-12-19 16:28:15,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92257242] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:28:15,618 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:28:15,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2021-12-19 16:28:15,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95440469] [2021-12-19 16:28:15,618 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:28:15,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-12-19 16:28:15,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:28:15,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-12-19 16:28:15,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-12-19 16:28:15,627 INFO L87 Difference]: Start difference. First operand 6897 states and 10365 transitions. Second operand has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-12-19 16:28:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:28:41,782 INFO L93 Difference]: Finished difference Result 12329 states and 19129 transitions. [2021-12-19 16:28:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-12-19 16:28:41,783 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) Word has length 1635 [2021-12-19 16:28:41,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:28:41,812 INFO L225 Difference]: With dead ends: 12329 [2021-12-19 16:28:41,813 INFO L226 Difference]: Without dead ends: 12328 [2021-12-19 16:28:41,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3455 GetRequests, 3080 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-12-19 16:28:41,825 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 16914 mSDsluCounter, 3386 mSDsCounter, 0 mSdLazyCounter, 11912 mSolverCounterSat, 9185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16924 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 21097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9185 IncrementalHoareTripleChecker+Valid, 11912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-19 16:28:41,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16924 Valid, 3642 Invalid, 21097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9185 Valid, 11912 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-12-19 16:28:41,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2021-12-19 16:28:42,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 12273. [2021-12-19 16:28:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12273 states, 8875 states have (on average 1.4581408450704225) internal successors, (12941), 11559 states have internal predecessors, (12941), 3022 states have call successors, (3022), 374 states have call predecessors, (3022), 375 states have return successors, (3042), 432 states have call predecessors, (3042), 3022 states have call successors, (3042) [2021-12-19 16:28:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12273 states to 12273 states and 19005 transitions. [2021-12-19 16:28:42,243 INFO L78 Accepts]: Start accepts. Automaton has 12273 states and 19005 transitions. Word has length 1635 [2021-12-19 16:28:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:28:42,244 INFO L470 AbstractCegarLoop]: Abstraction has 12273 states and 19005 transitions. [2021-12-19 16:28:42,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-12-19 16:28:42,245 INFO L276 IsEmpty]: Start isEmpty. Operand 12273 states and 19005 transitions. [2021-12-19 16:28:42,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2212 [2021-12-19 16:28:42,294 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:28:42,295 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:28:42,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-19 16:28:42,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-19 16:28:42,509 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:28:42,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:28:42,510 INFO L85 PathProgramCache]: Analyzing trace with hash 2122544694, now seen corresponding path program 2 times [2021-12-19 16:28:42,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:28:42,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268669826] [2021-12-19 16:28:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:28:42,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:28:44,164 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:28:44,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171960215] [2021-12-19 16:28:44,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 16:28:44,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:28:44,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:28:44,166 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:28:44,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-19 16:29:05,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 16:29:05,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 16:29:06,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 31078 conjuncts, 191 conjunts are in the unsatisfiable core [2021-12-19 16:29:06,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:29:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 57416 backedges. 0 proven. 52456 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 16:29:13,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:29:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 57416 backedges. 0 proven. 34972 refuted. 0 times theorem prover too weak. 22444 trivial. 0 not checked. [2021-12-19 16:29:29,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:29:29,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268669826] [2021-12-19 16:29:29,605 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:29:29,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171960215] [2021-12-19 16:29:29,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171960215] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:29:29,605 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:29:29,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2021-12-19 16:29:29,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937716287] [2021-12-19 16:29:29,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:29:29,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-12-19 16:29:29,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:29:29,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-12-19 16:29:29,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-12-19 16:29:29,692 INFO L87 Difference]: Start difference. First operand 12273 states and 19005 transitions. Second operand has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-12-19 16:33:01,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:33:01,876 INFO L93 Difference]: Finished difference Result 23081 states and 36457 transitions. [2021-12-19 16:33:01,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-12-19 16:33:01,877 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) Word has length 2211 [2021-12-19 16:33:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:33:01,933 INFO L225 Difference]: With dead ends: 23081 [2021-12-19 16:33:01,934 INFO L226 Difference]: Without dead ends: 23080 [2021-12-19 16:33:01,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4799 GetRequests, 4040 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 57.5s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-12-19 16:33:01,974 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 40113 mSDsluCounter, 7250 mSDsCounter, 0 mSdLazyCounter, 26736 mSolverCounterSat, 23916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40123 SdHoareTripleChecker+Valid, 7506 SdHoareTripleChecker+Invalid, 50652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 23916 IncrementalHoareTripleChecker+Valid, 26736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-12-19 16:33:01,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40123 Valid, 7506 Invalid, 50652 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [23916 Valid, 26736 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2021-12-19 16:33:01,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23080 states. [2021-12-19 16:33:02,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23080 to 23025. [2021-12-19 16:33:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23025 states, 16171 states have (on average 1.48889988250572) internal successors, (24077), 21639 states have internal predecessors, (24077), 6094 states have call successors, (6094), 758 states have call predecessors, (6094), 759 states have return successors, (6114), 816 states have call predecessors, (6114), 6094 states have call successors, (6114) [2021-12-19 16:33:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23025 states to 23025 states and 36285 transitions. [2021-12-19 16:33:02,805 INFO L78 Accepts]: Start accepts. Automaton has 23025 states and 36285 transitions. Word has length 2211 [2021-12-19 16:33:02,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:33:02,807 INFO L470 AbstractCegarLoop]: Abstraction has 23025 states and 36285 transitions. [2021-12-19 16:33:02,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-12-19 16:33:02,808 INFO L276 IsEmpty]: Start isEmpty. Operand 23025 states and 36285 transitions. [2021-12-19 16:33:02,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3364 [2021-12-19 16:33:02,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:33:02,907 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:33:03,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-12-19 16:33:03,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-19 16:33:03,136 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:33:03,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:33:03,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1562293962, now seen corresponding path program 3 times [2021-12-19 16:33:03,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:33:03,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305233729] [2021-12-19 16:33:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:33:03,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:33:05,081 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:33:05,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212538707] [2021-12-19 16:33:05,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 16:33:05,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:33:05,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:33:05,083 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:33:05,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-19 16:33:24,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-19 16:33:24,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 16:33:24,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 2994 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 16:33:24,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:33:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 220424 backedges. 1893 proven. 0 refuted. 0 times theorem prover too weak. 218531 trivial. 0 not checked. [2021-12-19 16:33:27,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:33:27,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:33:27,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305233729] [2021-12-19 16:33:27,856 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:33:27,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212538707] [2021-12-19 16:33:27,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212538707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:33:27,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:33:27,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 16:33:27,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530264604] [2021-12-19 16:33:27,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:33:27,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 16:33:27,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:33:27,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 16:33:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-19 16:33:27,859 INFO L87 Difference]: Start difference. First operand 23025 states and 36285 transitions. Second operand has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-19 16:33:29,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:33:29,399 INFO L93 Difference]: Finished difference Result 45979 states and 72018 transitions. [2021-12-19 16:33:29,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-19 16:33:29,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 3363 [2021-12-19 16:33:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:33:29,511 INFO L225 Difference]: With dead ends: 45979 [2021-12-19 16:33:29,512 INFO L226 Difference]: Without dead ends: 45978 [2021-12-19 16:33:29,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3371 GetRequests, 3362 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-19 16:33:29,530 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 499 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 16:33:29,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 699 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 16:33:29,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45978 states. [2021-12-19 16:33:31,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45978 to 37513. [2021-12-19 16:33:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37513 states, 26909 states have (on average 1.5037719722026088) internal successors, (40465), 34996 states have internal predecessors, (40465), 9278 states have call successors, (9278), 1324 states have call predecessors, (9278), 1325 states have return successors, (9298), 1381 states have call predecessors, (9298), 9278 states have call successors, (9298) [2021-12-19 16:33:31,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37513 states to 37513 states and 59041 transitions. [2021-12-19 16:33:31,249 INFO L78 Accepts]: Start accepts. Automaton has 37513 states and 59041 transitions. Word has length 3363 [2021-12-19 16:33:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:33:31,252 INFO L470 AbstractCegarLoop]: Abstraction has 37513 states and 59041 transitions. [2021-12-19 16:33:31,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-19 16:33:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 37513 states and 59041 transitions. [2021-12-19 16:33:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3365 [2021-12-19 16:33:31,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:33:31,592 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:33:31,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-19 16:33:31,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-19 16:33:31,811 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 16:33:31,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:33:31,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1964374819, now seen corresponding path program 1 times [2021-12-19 16:33:31,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:33:31,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357497847] [2021-12-19 16:33:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:33:31,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:33:33,330 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:33:33,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790771621] [2021-12-19 16:33:33,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:33:33,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:33:33,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:33:33,332 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:33:33,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-19 16:33:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:33:58,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 34537 conjuncts, 383 conjunts are in the unsatisfiable core [2021-12-19 16:33:58,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:34:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 219855 backedges. 0 proven. 214895 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 16:34:34,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:35:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 219855 backedges. 0 proven. 143831 refuted. 0 times theorem prover too weak. 76024 trivial. 0 not checked. [2021-12-19 16:35:30,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:35:30,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357497847] [2021-12-19 16:35:30,592 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:35:30,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790771621] [2021-12-19 16:35:30,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790771621] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:35:30,592 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:35:30,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [382, 383] total 765 [2021-12-19 16:35:30,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847187328] [2021-12-19 16:35:30,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:35:30,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2021-12-19 16:35:30,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:35:30,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2021-12-19 16:35:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990 [2021-12-19 16:35:30,633 INFO L87 Difference]: Start difference. First operand 37513 states and 59041 transitions. Second operand has 766 states, 765 states have (on average 4.580392156862745) internal successors, (3504), 766 states have internal predecessors, (3504), 380 states have call successors, (386), 191 states have call predecessors, (386), 191 states have return successors, (386), 380 states have call predecessors, (386), 380 states have call successors, (386) Killed by 15