./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e19ca921 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_test6-2.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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:41:10,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:41:10,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:41:10,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:41:10,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:41:10,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:41:10,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:41:10,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:41:10,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:41:10,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:41:10,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:41:10,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:41:10,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:41:10,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:41:10,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:41:10,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:41:10,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:41:10,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:41:10,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:41:10,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:41:10,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:41:10,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:41:10,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:41:10,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:41:10,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:41:10,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:41:10,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:41:10,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:41:10,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:41:10,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:41:10,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:41:10,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:41:10,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:41:10,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:41:10,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:41:10,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:41:10,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:41:10,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:41:10,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:41:10,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:41:10,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:41:10,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-22 19:41:10,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:41:10,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:41:10,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:41:10,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:41:10,667 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 19:41:10,668 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 19:41:10,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:41:10,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:41:10,669 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:41:10,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:41:10,670 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 19:41:10,670 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:41:10,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:41:10,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 19:41:10,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:41:10,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 19:41:10,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 19:41:10,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 19:41:10,671 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-22 19:41:10,672 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 19:41:10,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:41:10,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:41:10,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 19:41:10,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:41:10,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:41:10,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 19:41:10,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:41:10,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:41:10,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 19:41:10,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 19:41:10,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:41:10,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 19:41:10,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 19:41:10,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:41:10,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2021-12-22 19:41:10,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:41:10,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:41:10,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:41:10,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:41:10,896 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:41:10,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-12-22 19:41:10,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4962a1986/442cdbd11ef841f6bdc35c36e448901c/FLAG255bbd3cd [2021-12-22 19:41:11,464 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:41:11,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-12-22 19:41:11,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4962a1986/442cdbd11ef841f6bdc35c36e448901c/FLAG255bbd3cd [2021-12-22 19:41:11,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4962a1986/442cdbd11ef841f6bdc35c36e448901c [2021-12-22 19:41:11,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:41:11,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:41:11,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:41:11,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:41:11,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:41:11,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:41:11" (1/1) ... [2021-12-22 19:41:11,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51318ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:11, skipping insertion in model container [2021-12-22 19:41:11,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:41:11" (1/1) ... [2021-12-22 19:41:11,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:41:12,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:41:12,509 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_test6-2.i[44118,44131] [2021-12-22 19:41:12,525 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_test6-2.i[44660,44673] [2021-12-22 19:41:12,606 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_test6-2.i[56247,56260] [2021-12-22 19:41:12,607 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_test6-2.i[56368,56381] [2021-12-22 19:41:12,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:41:12,636 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:41:12,679 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_test6-2.i[44118,44131] [2021-12-22 19:41:12,681 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_test6-2.i[44660,44673] [2021-12-22 19:41:12,722 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_test6-2.i[56247,56260] [2021-12-22 19:41:12,723 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_test6-2.i[56368,56381] [2021-12-22 19:41:12,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:41:12,779 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:41:12,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:12 WrapperNode [2021-12-22 19:41:12,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:41:12,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:41:12,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:41:12,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:41:12,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:12" (1/1) ... [2021-12-22 19:41:12,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:12" (1/1) ... [2021-12-22 19:41:12,885 INFO L137 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1209 [2021-12-22 19:41:12,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:41:12,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:41:12,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:41:12,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:41:12,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:12" (1/1) ... [2021-12-22 19:41:12,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:12" (1/1) ... [2021-12-22 19:41:12,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:12" (1/1) ... [2021-12-22 19:41:12,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:12" (1/1) ... [2021-12-22 19:41:12,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:12" (1/1) ... [2021-12-22 19:41:12,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:12" (1/1) ... [2021-12-22 19:41:13,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:12" (1/1) ... [2021-12-22 19:41:13,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:41:13,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:41:13,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:41:13,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:41:13,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:12" (1/1) ... [2021-12-22 19:41:13,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:41:13,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:13,053 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) [2021-12-22 19:41:13,066 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 [2021-12-22 19:41:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 19:41:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-22 19:41:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 19:41:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 19:41:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-12-22 19:41:13,092 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-12-22 19:41:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 19:41:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 19:41:13,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 19:41:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 19:41:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 19:41:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 19:41:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-12-22 19:41:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-12-22 19:41:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 19:41:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-12-22 19:41:13,094 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-12-22 19:41:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 19:41:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:41:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:41:13,334 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:41:13,335 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:41:14,154 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:41:14,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:41:14,167 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-12-22 19:41:14,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:41:14 BoogieIcfgContainer [2021-12-22 19:41:14,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:41:14,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 19:41:14,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 19:41:14,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 19:41:14,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:41:11" (1/3) ... [2021-12-22 19:41:14,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eae0cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:41:14, skipping insertion in model container [2021-12-22 19:41:14,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:41:12" (2/3) ... [2021-12-22 19:41:14,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eae0cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:41:14, skipping insertion in model container [2021-12-22 19:41:14,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:41:14" (3/3) ... [2021-12-22 19:41:14,176 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2021-12-22 19:41:14,180 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 19:41:14,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-12-22 19:41:14,235 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 19:41:14,242 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 [2021-12-22 19:41:14,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-12-22 19:41:14,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 278 states, 244 states have (on average 1.651639344262295) internal successors, (403), 258 states have internal predecessors, (403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-22 19:41:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 19:41:14,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:14,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:14,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1831503788, now seen corresponding path program 1 times [2021-12-22 19:41:14,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:14,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149837770] [2021-12-22 19:41:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:14,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:14,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:14,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149837770] [2021-12-22 19:41:14,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149837770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:14,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:14,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:41:14,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160490622] [2021-12-22 19:41:14,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:14,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 19:41:14,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:14,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 19:41:14,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 19:41:14,506 INFO L87 Difference]: Start difference. First operand has 278 states, 244 states have (on average 1.651639344262295) internal successors, (403), 258 states have internal predecessors, (403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-22 19:41:14,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:14,555 INFO L93 Difference]: Finished difference Result 551 states and 876 transitions. [2021-12-22 19:41:14,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 19:41:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-12-22 19:41:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:14,573 INFO L225 Difference]: With dead ends: 551 [2021-12-22 19:41:14,573 INFO L226 Difference]: Without dead ends: 271 [2021-12-22 19:41:14,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 19:41:14,584 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:14,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:14,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-12-22 19:41:14,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-12-22 19:41:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 238 states have (on average 1.3319327731092436) internal successors, (317), 252 states have internal predecessors, (317), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-22 19:41:14,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 347 transitions. [2021-12-22 19:41:14,667 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 347 transitions. Word has length 8 [2021-12-22 19:41:14,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:14,668 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 347 transitions. [2021-12-22 19:41:14,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-12-22 19:41:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 347 transitions. [2021-12-22 19:41:14,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 19:41:14,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:14,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:14,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 19:41:14,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:14,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:14,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505710, now seen corresponding path program 1 times [2021-12-22 19:41:14,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:14,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903126760] [2021-12-22 19:41:14,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:14,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:14,731 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:14,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295413254] [2021-12-22 19:41:14,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:14,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:14,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:14,755 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) [2021-12-22 19:41:14,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 19:41:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:14,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-22 19:41:14,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:14,989 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 19:41:14,995 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-22 19:41:15,046 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-22 19:41:15,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-22 19:41:15,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 19:41:15,109 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-22 19:41:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:15,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:15,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:15,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903126760] [2021-12-22 19:41:15,120 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:15,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295413254] [2021-12-22 19:41:15,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295413254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:15,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:15,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 19:41:15,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69624005] [2021-12-22 19:41:15,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:15,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 19:41:15,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:15,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 19:41:15,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 19:41:15,130 INFO L87 Difference]: Start difference. First operand 271 states and 347 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2021-12-22 19:41:15,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:15,895 INFO L93 Difference]: Finished difference Result 418 states and 545 transitions. [2021-12-22 19:41:15,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 19:41:15,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2021-12-22 19:41:15,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:15,897 INFO L225 Difference]: With dead ends: 418 [2021-12-22 19:41:15,898 INFO L226 Difference]: Without dead ends: 416 [2021-12-22 19:41:15,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 19:41:15,899 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 264 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:15,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 1398 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 19:41:15,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-12-22 19:41:15,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 278. [2021-12-22 19:41:15,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 245 states have (on average 1.3265306122448979) internal successors, (325), 259 states have internal predecessors, (325), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-22 19:41:15,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 355 transitions. [2021-12-22 19:41:15,911 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 355 transitions. Word has length 8 [2021-12-22 19:41:15,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:15,911 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 355 transitions. [2021-12-22 19:41:15,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2021-12-22 19:41:15,911 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 355 transitions. [2021-12-22 19:41:15,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 19:41:15,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:15,913 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:15,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:16,136 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 [2021-12-22 19:41:16,137 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash 66914197, now seen corresponding path program 1 times [2021-12-22 19:41:16,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:16,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225271840] [2021-12-22 19:41:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:16,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:16,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 19:41:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 19:41:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:16,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 19:41:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-22 19:41:16,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:16,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225271840] [2021-12-22 19:41:16,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225271840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:16,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:16,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 19:41:16,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792127951] [2021-12-22 19:41:16,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:16,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:41:16,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:16,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:41:16,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:41:16,232 INFO L87 Difference]: Start difference. First operand 278 states and 355 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 19:41:16,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:16,505 INFO L93 Difference]: Finished difference Result 542 states and 701 transitions. [2021-12-22 19:41:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:41:16,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2021-12-22 19:41:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:16,507 INFO L225 Difference]: With dead ends: 542 [2021-12-22 19:41:16,507 INFO L226 Difference]: Without dead ends: 396 [2021-12-22 19:41:16,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:41:16,508 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 138 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:16,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 962 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 19:41:16,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-12-22 19:41:16,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 278. [2021-12-22 19:41:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 245 states have (on average 1.3224489795918368) internal successors, (324), 259 states have internal predecessors, (324), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-22 19:41:16,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 354 transitions. [2021-12-22 19:41:16,519 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 354 transitions. Word has length 34 [2021-12-22 19:41:16,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:16,522 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 354 transitions. [2021-12-22 19:41:16,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-22 19:41:16,524 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 354 transitions. [2021-12-22 19:41:16,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 19:41:16,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:16,525 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] [2021-12-22 19:41:16,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 19:41:16,526 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:16,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:16,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1327548217, now seen corresponding path program 1 times [2021-12-22 19:41:16,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:16,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830757710] [2021-12-22 19:41:16,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:16,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:16,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:16,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152764449] [2021-12-22 19:41:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:16,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:16,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:16,577 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) [2021-12-22 19:41:16,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 19:41:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:16,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:41:16,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:16,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:16,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:16,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830757710] [2021-12-22 19:41:16,852 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:16,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152764449] [2021-12-22 19:41:16,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152764449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:16,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:16,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:41:16,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450981540] [2021-12-22 19:41:16,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:16,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:41:16,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:16,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:41:16,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:41:16,855 INFO L87 Difference]: Start difference. First operand 278 states and 354 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:41:16,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:16,910 INFO L93 Difference]: Finished difference Result 568 states and 730 transitions. [2021-12-22 19:41:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:41:16,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-22 19:41:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:16,915 INFO L225 Difference]: With dead ends: 568 [2021-12-22 19:41:16,915 INFO L226 Difference]: Without dead ends: 299 [2021-12-22 19:41:16,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:41:16,919 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 9 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 639 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 [2021-12-22 19:41:16,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 639 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:16,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-22 19:41:16,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 298. [2021-12-22 19:41:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 265 states have (on average 1.2981132075471697) internal successors, (344), 279 states have internal predecessors, (344), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-22 19:41:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 374 transitions. [2021-12-22 19:41:16,931 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 374 transitions. Word has length 45 [2021-12-22 19:41:16,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:16,931 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 374 transitions. [2021-12-22 19:41:16,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:41:16,931 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 374 transitions. [2021-12-22 19:41:16,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 19:41:16,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:16,937 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] [2021-12-22 19:41:16,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:17,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-22 19:41:17,160 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:17,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:17,160 INFO L85 PathProgramCache]: Analyzing trace with hash 485935029, now seen corresponding path program 1 times [2021-12-22 19:41:17,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:17,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506007158] [2021-12-22 19:41:17,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:17,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:17,185 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:17,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355341269] [2021-12-22 19:41:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:17,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:17,187 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) [2021-12-22 19:41:17,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 19:41:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:17,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:41:17,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:17,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:17,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:17,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506007158] [2021-12-22 19:41:17,428 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:17,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355341269] [2021-12-22 19:41:17,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355341269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:17,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:17,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 19:41:17,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630598263] [2021-12-22 19:41:17,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:17,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:41:17,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:17,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:41:17,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:41:17,430 INFO L87 Difference]: Start difference. First operand 298 states and 374 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:41:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:17,485 INFO L93 Difference]: Finished difference Result 577 states and 729 transitions. [2021-12-22 19:41:17,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:41:17,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-22 19:41:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:17,487 INFO L225 Difference]: With dead ends: 577 [2021-12-22 19:41:17,487 INFO L226 Difference]: Without dead ends: 288 [2021-12-22 19:41:17,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:41:17,488 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 276 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 704 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 [2021-12-22 19:41:17,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 704 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-22 19:41:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2021-12-22 19:41:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 251 states have (on average 1.2868525896414342) internal successors, (323), 265 states have internal predecessors, (323), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-22 19:41:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 353 transitions. [2021-12-22 19:41:17,496 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 353 transitions. Word has length 45 [2021-12-22 19:41:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:17,496 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 353 transitions. [2021-12-22 19:41:17,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:41:17,497 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 353 transitions. [2021-12-22 19:41:17,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 19:41:17,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:17,497 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] [2021-12-22 19:41:17,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:17,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:17,721 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:17,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1565834691, now seen corresponding path program 1 times [2021-12-22 19:41:17,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:17,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430588686] [2021-12-22 19:41:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:17,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:17,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:17,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661529900] [2021-12-22 19:41:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:17,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:17,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:17,753 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) [2021-12-22 19:41:17,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 19:41:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:17,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 19:41:17,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:18,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:18,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:18,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430588686] [2021-12-22 19:41:18,039 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:18,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661529900] [2021-12-22 19:41:18,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661529900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:18,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:18,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:41:18,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553793634] [2021-12-22 19:41:18,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:18,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:41:18,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:18,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:41:18,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:41:18,041 INFO L87 Difference]: Start difference. First operand 284 states and 353 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:41:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:18,074 INFO L93 Difference]: Finished difference Result 507 states and 632 transitions. [2021-12-22 19:41:18,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 19:41:18,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-22 19:41:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:18,077 INFO L225 Difference]: With dead ends: 507 [2021-12-22 19:41:18,077 INFO L226 Difference]: Without dead ends: 505 [2021-12-22 19:41:18,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:41:18,078 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 228 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:18,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 1021 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:18,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-12-22 19:41:18,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 495. [2021-12-22 19:41:18,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 451 states have (on average 1.2860310421286032) internal successors, (580), 466 states have internal predecessors, (580), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-22 19:41:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 628 transitions. [2021-12-22 19:41:18,093 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 628 transitions. Word has length 45 [2021-12-22 19:41:18,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:18,094 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 628 transitions. [2021-12-22 19:41:18,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:41:18,094 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 628 transitions. [2021-12-22 19:41:18,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 19:41:18,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:18,095 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] [2021-12-22 19:41:18,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:18,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:18,316 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:18,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1296235199, now seen corresponding path program 1 times [2021-12-22 19:41:18,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:18,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483742206] [2021-12-22 19:41:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:18,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:18,340 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:18,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077165613] [2021-12-22 19:41:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:18,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:18,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:18,342 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) [2021-12-22 19:41:18,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 19:41:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:18,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 19:41:18,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:18,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:18,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:18,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483742206] [2021-12-22 19:41:18,609 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:18,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077165613] [2021-12-22 19:41:18,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077165613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:18,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:18,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:41:18,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353028854] [2021-12-22 19:41:18,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:18,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 19:41:18,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:18,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:41:18,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:41:18,611 INFO L87 Difference]: Start difference. First operand 495 states and 628 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:41:18,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:18,658 INFO L93 Difference]: Finished difference Result 881 states and 1130 transitions. [2021-12-22 19:41:18,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 19:41:18,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-22 19:41:18,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:18,664 INFO L225 Difference]: With dead ends: 881 [2021-12-22 19:41:18,664 INFO L226 Difference]: Without dead ends: 879 [2021-12-22 19:41:18,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 19:41:18,665 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 275 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:18,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 1022 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:18,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2021-12-22 19:41:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 868. [2021-12-22 19:41:18,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 803 states have (on average 1.2976338729763388) internal successors, (1042), 821 states have internal predecessors, (1042), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-22 19:41:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1127 transitions. [2021-12-22 19:41:18,694 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1127 transitions. Word has length 46 [2021-12-22 19:41:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:18,695 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1127 transitions. [2021-12-22 19:41:18,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:41:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1127 transitions. [2021-12-22 19:41:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-22 19:41:18,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:18,696 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] [2021-12-22 19:41:18,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:18,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:18,918 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:18,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1626206984, now seen corresponding path program 1 times [2021-12-22 19:41:18,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:18,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214680848] [2021-12-22 19:41:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:18,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:18,938 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:18,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065178968] [2021-12-22 19:41:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:18,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:18,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:18,939 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) [2021-12-22 19:41:18,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 19:41:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:19,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:41:19,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:19,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:19,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:19,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214680848] [2021-12-22 19:41:19,268 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:19,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065178968] [2021-12-22 19:41:19,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065178968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:19,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:19,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 19:41:19,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424089592] [2021-12-22 19:41:19,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:19,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:41:19,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:19,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:41:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:41:19,270 INFO L87 Difference]: Start difference. First operand 868 states and 1127 transitions. Second operand has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 19:41:19,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:19,296 INFO L93 Difference]: Finished difference Result 897 states and 1150 transitions. [2021-12-22 19:41:19,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:41:19,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-12-22 19:41:19,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:19,300 INFO L225 Difference]: With dead ends: 897 [2021-12-22 19:41:19,300 INFO L226 Difference]: Without dead ends: 896 [2021-12-22 19:41:19,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:41:19,301 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 233 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 685 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 [2021-12-22 19:41:19,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 685 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-12-22 19:41:19,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 886. [2021-12-22 19:41:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 816 states have (on average 1.2941176470588236) internal successors, (1056), 835 states have internal predecessors, (1056), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2021-12-22 19:41:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1147 transitions. [2021-12-22 19:41:19,327 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1147 transitions. Word has length 55 [2021-12-22 19:41:19,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:19,328 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1147 transitions. [2021-12-22 19:41:19,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 19:41:19,328 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1147 transitions. [2021-12-22 19:41:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 19:41:19,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:19,329 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] [2021-12-22 19:41:19,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:19,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:19,542 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:19,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:19,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1127190987, now seen corresponding path program 1 times [2021-12-22 19:41:19,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:19,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597447892] [2021-12-22 19:41:19,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:19,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:19,567 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:19,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383169714] [2021-12-22 19:41:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:19,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:19,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:19,569 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) [2021-12-22 19:41:19,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 19:41:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:19,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:41:19,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:19,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:19,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:19,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597447892] [2021-12-22 19:41:19,868 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:19,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383169714] [2021-12-22 19:41:19,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383169714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:19,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:19,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 19:41:19,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059067657] [2021-12-22 19:41:19,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:19,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:41:19,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:19,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:41:19,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:41:19,870 INFO L87 Difference]: Start difference. First operand 886 states and 1147 transitions. Second operand has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 19:41:19,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:19,911 INFO L93 Difference]: Finished difference Result 886 states and 1147 transitions. [2021-12-22 19:41:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:41:19,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-22 19:41:19,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:19,915 INFO L225 Difference]: With dead ends: 886 [2021-12-22 19:41:19,915 INFO L226 Difference]: Without dead ends: 885 [2021-12-22 19:41:19,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:41:19,916 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 283 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:19,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 336 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:41:19,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-12-22 19:41:19,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2021-12-22 19:41:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 816 states have (on average 1.2916666666666667) internal successors, (1054), 834 states have internal predecessors, (1054), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2021-12-22 19:41:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1145 transitions. [2021-12-22 19:41:19,945 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1145 transitions. Word has length 56 [2021-12-22 19:41:19,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:19,946 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1145 transitions. [2021-12-22 19:41:19,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-22 19:41:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1145 transitions. [2021-12-22 19:41:19,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-22 19:41:19,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:19,947 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] [2021-12-22 19:41:19,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:20,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:20,171 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:20,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:20,172 INFO L85 PathProgramCache]: Analyzing trace with hash -906147032, now seen corresponding path program 1 times [2021-12-22 19:41:20,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:20,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689141247] [2021-12-22 19:41:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:20,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:20,268 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:20,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418374060] [2021-12-22 19:41:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:20,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:20,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:20,272 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) [2021-12-22 19:41:20,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 19:41:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:20,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 19:41:20,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:21,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:21,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:21,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689141247] [2021-12-22 19:41:21,010 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:21,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418374060] [2021-12-22 19:41:21,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418374060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:21,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:21,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:41:21,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141474897] [2021-12-22 19:41:21,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:21,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:41:21,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:21,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:41:21,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:41:21,013 INFO L87 Difference]: Start difference. First operand 885 states and 1145 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-12-22 19:41:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:21,132 INFO L93 Difference]: Finished difference Result 1673 states and 2167 transitions. [2021-12-22 19:41:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:41:21,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-12-22 19:41:21,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:21,136 INFO L225 Difference]: With dead ends: 1673 [2021-12-22 19:41:21,136 INFO L226 Difference]: Without dead ends: 797 [2021-12-22 19:41:21,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:41:21,138 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 143 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:21,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 677 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:41:21,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-12-22 19:41:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 731. [2021-12-22 19:41:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 673 states have (on average 1.2823179791976227) internal successors, (863), 689 states have internal predecessors, (863), 36 states have call successors, (36), 11 states have call predecessors, (36), 9 states have return successors, (39), 32 states have call predecessors, (39), 36 states have call successors, (39) [2021-12-22 19:41:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 938 transitions. [2021-12-22 19:41:21,159 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 938 transitions. Word has length 58 [2021-12-22 19:41:21,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:21,159 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 938 transitions. [2021-12-22 19:41:21,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-12-22 19:41:21,160 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 938 transitions. [2021-12-22 19:41:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-22 19:41:21,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:21,161 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 19:41:21,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:21,371 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,SelfDestructingSolverStorable9 [2021-12-22 19:41:21,372 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:21,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:21,372 INFO L85 PathProgramCache]: Analyzing trace with hash 680301287, now seen corresponding path program 1 times [2021-12-22 19:41:21,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:21,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506606652] [2021-12-22 19:41:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:21,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:21,397 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:21,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263016997] [2021-12-22 19:41:21,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:21,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:21,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:21,399 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) [2021-12-22 19:41:21,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 19:41:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:21,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 19:41:21,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:21,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:41:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:22,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:22,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506606652] [2021-12-22 19:41:22,118 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:22,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263016997] [2021-12-22 19:41:22,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263016997] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:41:22,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 19:41:22,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2021-12-22 19:41:22,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765198595] [2021-12-22 19:41:22,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 19:41:22,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 19:41:22,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:22,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 19:41:22,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-22 19:41:22,122 INFO L87 Difference]: Start difference. First operand 731 states and 938 transitions. Second operand has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-22 19:41:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:22,860 INFO L93 Difference]: Finished difference Result 2391 states and 3102 transitions. [2021-12-22 19:41:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 19:41:22,861 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 64 [2021-12-22 19:41:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:22,870 INFO L225 Difference]: With dead ends: 2391 [2021-12-22 19:41:22,871 INFO L226 Difference]: Without dead ends: 2389 [2021-12-22 19:41:22,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-12-22 19:41:22,872 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 1777 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 4896 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:22,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 4896 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 19:41:22,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-12-22 19:41:22,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2111. [2021-12-22 19:41:22,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1969 states have (on average 1.2869476891823262) internal successors, (2534), 1989 states have internal predecessors, (2534), 105 states have call successors, (105), 29 states have call predecessors, (105), 24 states have return successors, (126), 93 states have call predecessors, (126), 105 states have call successors, (126) [2021-12-22 19:41:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 2765 transitions. [2021-12-22 19:41:22,937 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 2765 transitions. Word has length 64 [2021-12-22 19:41:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:22,938 INFO L470 AbstractCegarLoop]: Abstraction has 2111 states and 2765 transitions. [2021-12-22 19:41:22,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-22 19:41:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 2765 transitions. [2021-12-22 19:41:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-22 19:41:22,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:22,939 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:22,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:23,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:23,159 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:23,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:23,160 INFO L85 PathProgramCache]: Analyzing trace with hash 329250764, now seen corresponding path program 1 times [2021-12-22 19:41:23,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:23,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879010123] [2021-12-22 19:41:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:23,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:23,187 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:23,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [254480903] [2021-12-22 19:41:23,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:23,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:23,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:23,189 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) [2021-12-22 19:41:23,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 19:41:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:23,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 19:41:23,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:23,718 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:23,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:41:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-22 19:41:23,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:23,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879010123] [2021-12-22 19:41:23,908 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:23,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254480903] [2021-12-22 19:41:23,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254480903] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:41:23,909 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 19:41:23,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-12-22 19:41:23,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429626195] [2021-12-22 19:41:23,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 19:41:23,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 19:41:23,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:23,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 19:41:23,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-22 19:41:23,911 INFO L87 Difference]: Start difference. First operand 2111 states and 2765 transitions. Second operand has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-22 19:41:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:24,380 INFO L93 Difference]: Finished difference Result 3898 states and 5099 transitions. [2021-12-22 19:41:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 19:41:24,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 74 [2021-12-22 19:41:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:24,394 INFO L225 Difference]: With dead ends: 3898 [2021-12-22 19:41:24,394 INFO L226 Difference]: Without dead ends: 3897 [2021-12-22 19:41:24,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2021-12-22 19:41:24,396 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1980 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:24,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1999 Valid, 1503 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 19:41:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-12-22 19:41:24,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3631. [2021-12-22 19:41:24,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3384 states have (on average 1.2866430260047281) internal successors, (4354), 3407 states have internal predecessors, (4354), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2021-12-22 19:41:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4755 transitions. [2021-12-22 19:41:24,521 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4755 transitions. Word has length 74 [2021-12-22 19:41:24,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:24,521 INFO L470 AbstractCegarLoop]: Abstraction has 3631 states and 4755 transitions. [2021-12-22 19:41:24,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-22 19:41:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4755 transitions. [2021-12-22 19:41:24,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-22 19:41:24,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:24,526 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:24,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-22 19:41:24,739 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,SelfDestructingSolverStorable11 [2021-12-22 19:41:24,739 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1941077584, now seen corresponding path program 1 times [2021-12-22 19:41:24,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:24,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558975612] [2021-12-22 19:41:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:24,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:24,772 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:24,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346526253] [2021-12-22 19:41:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:24,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:24,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:24,774 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) [2021-12-22 19:41:24,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 19:41:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:25,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-22 19:41:25,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-22 19:41:25,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:25,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:25,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558975612] [2021-12-22 19:41:25,370 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:25,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346526253] [2021-12-22 19:41:25,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346526253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:25,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:25,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 19:41:25,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943332685] [2021-12-22 19:41:25,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:25,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 19:41:25,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:25,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 19:41:25,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 19:41:25,372 INFO L87 Difference]: Start difference. First operand 3631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 19:41:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:25,569 INFO L93 Difference]: Finished difference Result 7201 states and 9443 transitions. [2021-12-22 19:41:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 19:41:25,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 96 [2021-12-22 19:41:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:25,582 INFO L225 Difference]: With dead ends: 7201 [2021-12-22 19:41:25,582 INFO L226 Difference]: Without dead ends: 3631 [2021-12-22 19:41:25,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-22 19:41:25,590 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 40 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:25,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1802 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:41:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2021-12-22 19:41:25,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3631. [2021-12-22 19:41:25,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3384 states have (on average 1.2863475177304964) internal successors, (4353), 3406 states have internal predecessors, (4353), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2021-12-22 19:41:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4754 transitions. [2021-12-22 19:41:25,732 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4754 transitions. Word has length 96 [2021-12-22 19:41:25,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:25,732 INFO L470 AbstractCegarLoop]: Abstraction has 3631 states and 4754 transitions. [2021-12-22 19:41:25,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-22 19:41:25,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4754 transitions. [2021-12-22 19:41:25,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 19:41:25,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:25,735 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:25,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:25,959 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,SelfDestructingSolverStorable12 [2021-12-22 19:41:25,959 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:25,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash -660392027, now seen corresponding path program 1 times [2021-12-22 19:41:25,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:25,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339467066] [2021-12-22 19:41:25,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:25,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:25,990 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:25,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614665669] [2021-12-22 19:41:25,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:25,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:25,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:25,992 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) [2021-12-22 19:41:26,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-22 19:41:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:26,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 19:41:26,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:41:26,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 19:41:26,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:26,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339467066] [2021-12-22 19:41:26,625 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:26,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614665669] [2021-12-22 19:41:26,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614665669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:41:26,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:41:26,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 19:41:26,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841100716] [2021-12-22 19:41:26,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:41:26,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 19:41:26,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:26,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 19:41:26,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-22 19:41:26,631 INFO L87 Difference]: Start difference. First operand 3631 states and 4754 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-22 19:41:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:27,246 INFO L93 Difference]: Finished difference Result 5954 states and 7797 transitions. [2021-12-22 19:41:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 19:41:27,246 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 101 [2021-12-22 19:41:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:27,254 INFO L225 Difference]: With dead ends: 5954 [2021-12-22 19:41:27,254 INFO L226 Difference]: Without dead ends: 2365 [2021-12-22 19:41:27,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-22 19:41:27,261 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 538 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:27,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 2422 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 19:41:27,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2021-12-22 19:41:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2021-12-22 19:41:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2188 states have (on average 1.2829067641681902) internal successors, (2807), 2208 states have internal predecessors, (2807), 116 states have call successors, (116), 50 states have call predecessors, (116), 46 states have return successors, (128), 104 states have call predecessors, (128), 116 states have call successors, (128) [2021-12-22 19:41:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3051 transitions. [2021-12-22 19:41:27,336 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3051 transitions. Word has length 101 [2021-12-22 19:41:27,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:27,336 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 3051 transitions. [2021-12-22 19:41:27,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-22 19:41:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3051 transitions. [2021-12-22 19:41:27,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-22 19:41:27,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:27,338 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:27,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:27,551 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,SelfDestructingSolverStorable13 [2021-12-22 19:41:27,552 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:27,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:27,552 INFO L85 PathProgramCache]: Analyzing trace with hash 29743279, now seen corresponding path program 1 times [2021-12-22 19:41:27,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:27,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258608570] [2021-12-22 19:41:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:27,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:27,593 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:27,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593041159] [2021-12-22 19:41:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:27,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:27,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:27,599 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) [2021-12-22 19:41:27,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-22 19:41:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:41:28,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-22 19:41:28,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:41:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 19:41:28,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:41:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-22 19:41:28,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:41:28,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258608570] [2021-12-22 19:41:28,650 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 19:41:28,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593041159] [2021-12-22 19:41:28,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593041159] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:41:28,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 19:41:28,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2021-12-22 19:41:28,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110848520] [2021-12-22 19:41:28,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 19:41:28,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 19:41:28,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:41:28,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 19:41:28,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-22 19:41:28,652 INFO L87 Difference]: Start difference. First operand 2363 states and 3051 transitions. Second operand has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-22 19:41:29,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:41:29,418 INFO L93 Difference]: Finished difference Result 4766 states and 6192 transitions. [2021-12-22 19:41:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-22 19:41:29,418 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2021-12-22 19:41:29,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:41:29,426 INFO L225 Difference]: With dead ends: 4766 [2021-12-22 19:41:29,426 INFO L226 Difference]: Without dead ends: 2454 [2021-12-22 19:41:29,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2021-12-22 19:41:29,432 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 583 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 19:41:29,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 2456 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 19:41:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2021-12-22 19:41:29,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2421. [2021-12-22 19:41:29,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2244 states have (on average 1.2883244206773619) internal successors, (2891), 2260 states have internal predecessors, (2891), 116 states have call successors, (116), 56 states have call predecessors, (116), 48 states have return successors, (124), 104 states have call predecessors, (124), 116 states have call successors, (124) [2021-12-22 19:41:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 3131 transitions. [2021-12-22 19:41:29,500 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 3131 transitions. Word has length 103 [2021-12-22 19:41:29,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:41:29,500 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 3131 transitions. [2021-12-22 19:41:29,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-22 19:41:29,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 3131 transitions. [2021-12-22 19:41:29,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-22 19:41:29,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:41:29,502 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:41:29,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-22 19:41:29,727 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,SelfDestructingSolverStorable14 [2021-12-22 19:41:29,727 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-22 19:41:29,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:41:29,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1912556091, now seen corresponding path program 2 times [2021-12-22 19:41:29,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:41:29,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588442351] [2021-12-22 19:41:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:41:29,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:41:29,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 19:41:29,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105986681] [2021-12-22 19:41:29,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:41:29,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:41:29,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:41:29,768 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) [2021-12-22 19:41:29,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process