./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_SFH_test9-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 16:48:34,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 16:48:34,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 16:48:34,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 16:48:34,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 16:48:34,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 16:48:34,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 16:48:34,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 16:48:34,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 16:48:34,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 16:48:34,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 16:48:34,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 16:48:34,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 16:48:34,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 16:48:34,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 16:48:34,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 16:48:34,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 16:48:34,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 16:48:34,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 16:48:34,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 16:48:34,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 16:48:34,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 16:48:34,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 16:48:34,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 16:48:34,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 16:48:34,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 16:48:34,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 16:48:34,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 16:48:34,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 16:48:34,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 16:48:34,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 16:48:34,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 16:48:34,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 16:48:34,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 16:48:34,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 16:48:34,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 16:48:34,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 16:48:34,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 16:48:34,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 16:48:34,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 16:48:34,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 16:48:34,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-04 16:48:34,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 16:48:34,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 16:48:34,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 16:48:34,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 16:48:34,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 16:48:34,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 16:48:34,643 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 16:48:34,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 16:48:34,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-04 16:48:34,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 16:48:34,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-04 16:48:34,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 16:48:34,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 16:48:34,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 16:48:34,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 16:48:34,645 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-04 16:48:34,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 16:48:34,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 16:48:34,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 16:48:34,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 16:48:34,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 16:48:34,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 16:48:34,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 16:48:34,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 16:48:34,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 16:48:34,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 16:48:34,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 16:48:34,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 16:48:34,647 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 16:48:34,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 16:48:34,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 16:48:34,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 16:48:34,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb52e740550b0ec41396d39fc3beea75c2dcd7385105eaeaaabca1f449d4b319 [2021-11-04 16:48:34,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 16:48:34,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 16:48:34,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 16:48:34,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 16:48:34,825 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 16:48:34,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2021-11-04 16:48:34,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6221fe0b/9fd1321b14dd4c91b45806da3878cdfe/FLAG70b8f2033 [2021-11-04 16:48:35,345 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 16:48:35,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test9-2.i [2021-11-04 16:48:35,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6221fe0b/9fd1321b14dd4c91b45806da3878cdfe/FLAG70b8f2033 [2021-11-04 16:48:35,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6221fe0b/9fd1321b14dd4c91b45806da3878cdfe [2021-11-04 16:48:35,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 16:48:35,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 16:48:35,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 16:48:35,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 16:48:35,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 16:48:35,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:48:35" (1/1) ... [2021-11-04 16:48:35,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b6287b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:35, skipping insertion in model container [2021-11-04 16:48:35,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 04:48:35" (1/1) ... [2021-11-04 16:48:35,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 16:48:35,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 16:48:35,990 WARN L228 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_SFH_test9-2.i[33021,33034] [2021-11-04 16:48:36,157 WARN L228 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_SFH_test9-2.i[84583,84596] [2021-11-04 16:48:36,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 16:48:36,182 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 16:48:36,200 WARN L228 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_SFH_test9-2.i[33021,33034] [2021-11-04 16:48:36,288 WARN L228 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_SFH_test9-2.i[84583,84596] [2021-11-04 16:48:36,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 16:48:36,325 INFO L208 MainTranslator]: Completed translation [2021-11-04 16:48:36,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:36 WrapperNode [2021-11-04 16:48:36,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 16:48:36,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 16:48:36,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 16:48:36,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 16:48:36,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:36" (1/1) ... [2021-11-04 16:48:36,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:36" (1/1) ... [2021-11-04 16:48:36,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 16:48:36,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 16:48:36,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 16:48:36,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 16:48:36,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:36" (1/1) ... [2021-11-04 16:48:36,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:36" (1/1) ... [2021-11-04 16:48:36,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:36" (1/1) ... [2021-11-04 16:48:36,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:36" (1/1) ... [2021-11-04 16:48:36,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:36" (1/1) ... [2021-11-04 16:48:36,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:36" (1/1) ... [2021-11-04 16:48:36,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:36" (1/1) ... [2021-11-04 16:48:36,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 16:48:36,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 16:48:36,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 16:48:36,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 16:48:36,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:36" (1/1) ... [2021-11-04 16:48:36,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 16:48:36,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:48:36,773 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) [2021-11-04 16:48:36,795 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 [2021-11-04 16:48:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 16:48:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 16:48:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 16:48:36,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 16:48:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 16:48:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 16:48:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 16:48:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 16:48:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 16:48:36,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 16:48:36,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 16:48:37,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 16:48:37,616 INFO L299 CfgBuilder]: Removed 1075 assume(true) statements. [2021-11-04 16:48:37,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:48:37 BoogieIcfgContainer [2021-11-04 16:48:37,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 16:48:37,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 16:48:37,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 16:48:37,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 16:48:37,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 04:48:35" (1/3) ... [2021-11-04 16:48:37,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1626d0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:48:37, skipping insertion in model container [2021-11-04 16:48:37,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 04:48:36" (2/3) ... [2021-11-04 16:48:37,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1626d0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 04:48:37, skipping insertion in model container [2021-11-04 16:48:37,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 04:48:37" (3/3) ... [2021-11-04 16:48:37,628 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test9-2.i [2021-11-04 16:48:37,631 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 16:48:37,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 501 error locations. [2021-11-04 16:48:37,680 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 16:48:37,686 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=PETRI_NET, 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 [2021-11-04 16:48:37,687 INFO L340 AbstractCegarLoop]: Starting to check reachability of 501 error locations. [2021-11-04 16:48:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 2186 states, 1684 states have (on average 1.9667458432304037) internal successors, (3312), 2185 states have internal predecessors, (3312), 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) [2021-11-04 16:48:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-04 16:48:37,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:48:37,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:48:37,740 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:48:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:48:37,744 INFO L85 PathProgramCache]: Analyzing trace with hash 239437319, now seen corresponding path program 1 times [2021-11-04 16:48:37,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:48:37,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985498917] [2021-11-04 16:48:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:48:37,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:48:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:48:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:48:37,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:48:37,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985498917] [2021-11-04 16:48:37,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985498917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:48:37,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:48:37,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 16:48:37,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251227216] [2021-11-04 16:48:37,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:48:37,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 16:48:37,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:48:37,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 16:48:37,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 16:48:37,927 INFO L87 Difference]: Start difference. First operand has 2186 states, 1684 states have (on average 1.9667458432304037) internal successors, (3312), 2185 states have internal predecessors, (3312), 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-04 16:48:40,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:48:40,225 INFO L93 Difference]: Finished difference Result 4370 states and 6622 transitions. [2021-11-04 16:48:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 16:48:40,227 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-04 16:48:40,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:48:40,243 INFO L225 Difference]: With dead ends: 4370 [2021-11-04 16:48:40,243 INFO L226 Difference]: Without dead ends: 2153 [2021-11-04 16:48:40,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 16:48:40,252 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1667.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2168.49ms IncrementalHoareTripleChecker+Time [2021-11-04 16:48:40,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2744 Unknown, 0 Unchecked, 7.16ms Time], IncrementalHoareTripleChecker [0 Valid, 2744 Invalid, 0 Unknown, 0 Unchecked, 2168.49ms Time] [2021-11-04 16:48:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2021-11-04 16:48:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2021-11-04 16:48:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 1652 states have (on average 1.6343825665859564) internal successors, (2700), 2152 states have internal predecessors, (2700), 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) [2021-11-04 16:48:40,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2700 transitions. [2021-11-04 16:48:40,328 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2700 transitions. Word has length 9 [2021-11-04 16:48:40,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:48:40,328 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 2700 transitions. [2021-11-04 16:48:40,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-04 16:48:40,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2700 transitions. [2021-11-04 16:48:40,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 16:48:40,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:48:40,330 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] [2021-11-04 16:48:40,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 16:48:40,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:48:40,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:48:40,331 INFO L85 PathProgramCache]: Analyzing trace with hash 627540097, now seen corresponding path program 1 times [2021-11-04 16:48:40,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:48:40,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25551069] [2021-11-04 16:48:40,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:48:40,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:48:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:48:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:48:40,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:48:40,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25551069] [2021-11-04 16:48:40,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25551069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:48:40,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:48:40,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:48:40,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537503684] [2021-11-04 16:48:40,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:48:40,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:48:40,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:48:40,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:48:40,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:48:40,425 INFO L87 Difference]: Start difference. First operand 2153 states and 2700 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-04 16:48:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:48:44,900 INFO L93 Difference]: Finished difference Result 6317 states and 7915 transitions. [2021-11-04 16:48:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:48:44,901 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), 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 44 [2021-11-04 16:48:44,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:48:44,912 INFO L225 Difference]: With dead ends: 6317 [2021-11-04 16:48:44,912 INFO L226 Difference]: Without dead ends: 4254 [2021-11-04 16:48:44,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:48:44,916 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2628 mSDsluCounter, 5295 mSDsCounter, 0 mSdLazyCounter, 8098 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3426.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2628 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.65ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4292.41ms IncrementalHoareTripleChecker+Time [2021-11-04 16:48:44,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2628 Valid, 0 Invalid, 8101 Unknown, 0 Unchecked, 22.65ms Time], IncrementalHoareTripleChecker [3 Valid, 8098 Invalid, 0 Unknown, 0 Unchecked, 4292.41ms Time] [2021-11-04 16:48:44,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4254 states. [2021-11-04 16:48:44,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4254 to 2155. [2021-11-04 16:48:44,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1654 states have (on average 1.6336154776299878) internal successors, (2702), 2154 states have internal predecessors, (2702), 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) [2021-11-04 16:48:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2702 transitions. [2021-11-04 16:48:44,956 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2702 transitions. Word has length 44 [2021-11-04 16:48:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:48:44,957 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2702 transitions. [2021-11-04 16:48:44,957 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), 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) [2021-11-04 16:48:44,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2702 transitions. [2021-11-04 16:48:44,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 16:48:44,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:48:44,959 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:48:44,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 16:48:44,960 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:48:44,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:48:44,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1103299153, now seen corresponding path program 1 times [2021-11-04 16:48:44,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:48:44,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587996956] [2021-11-04 16:48:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:48:44,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:48:44,975 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:48:44,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149085040] [2021-11-04 16:48:44,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:48:44,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:48:44,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:48:44,979 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) [2021-11-04 16:48:44,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 16:48:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:48:45,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:48:45,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:48:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:48:45,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:48:45,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:48:45,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587996956] [2021-11-04 16:48:45,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:48:45,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149085040] [2021-11-04 16:48:45,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149085040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:48:45,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:48:45,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:48:45,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749876634] [2021-11-04 16:48:45,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:48:45,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:48:45,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:48:45,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:48:45,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:48:45,315 INFO L87 Difference]: Start difference. First operand 2155 states and 2702 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 16:48:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:48:47,598 INFO L93 Difference]: Finished difference Result 4327 states and 5431 transitions. [2021-11-04 16:48:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:48:47,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-04 16:48:47,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:48:47,605 INFO L225 Difference]: With dead ends: 4327 [2021-11-04 16:48:47,605 INFO L226 Difference]: Without dead ends: 2176 [2021-11-04 16:48:47,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:48:47,608 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 5389 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1766.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.00ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2225.94ms IncrementalHoareTripleChecker+Time [2021-11-04 16:48:47,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 5417 Unknown, 0 Unchecked, 9.00ms Time], IncrementalHoareTripleChecker [28 Valid, 5389 Invalid, 0 Unknown, 0 Unchecked, 2225.94ms Time] [2021-11-04 16:48:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-11-04 16:48:47,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2175. [2021-11-04 16:48:47,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 1674 states have (on average 1.6260454002389486) internal successors, (2722), 2174 states have internal predecessors, (2722), 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) [2021-11-04 16:48:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 2722 transitions. [2021-11-04 16:48:47,636 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 2722 transitions. Word has length 96 [2021-11-04 16:48:47,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:48:47,636 INFO L470 AbstractCegarLoop]: Abstraction has 2175 states and 2722 transitions. [2021-11-04 16:48:47,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 16:48:47,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 2722 transitions. [2021-11-04 16:48:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 16:48:47,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:48:47,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:48:47,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 16:48:47,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:48:47,857 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:48:47,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:48:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1343538899, now seen corresponding path program 1 times [2021-11-04 16:48:47,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:48:47,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750125429] [2021-11-04 16:48:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:48:47,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:48:47,873 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:48:47,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142155439] [2021-11-04 16:48:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:48:47,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:48:47,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:48:47,878 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) [2021-11-04 16:48:47,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-04 16:48:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:48:48,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:48:48,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:48:48,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 16:48:48,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:48:48,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:48:48,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750125429] [2021-11-04 16:48:48,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:48:48,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142155439] [2021-11-04 16:48:48,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142155439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:48:48,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:48:48,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:48:48,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835350036] [2021-11-04 16:48:48,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:48:48,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:48:48,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:48:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:48:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:48:48,171 INFO L87 Difference]: Start difference. First operand 2175 states and 2722 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-04 16:48:50,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:48:50,332 INFO L93 Difference]: Finished difference Result 4258 states and 5334 transitions. [2021-11-04 16:48:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:48:50,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 96 [2021-11-04 16:48:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:48:50,341 INFO L225 Difference]: With dead ends: 4258 [2021-11-04 16:48:50,341 INFO L226 Difference]: Without dead ends: 2196 [2021-11-04 16:48:50,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:48:50,344 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 5389 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1664.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.74ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 5389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2109.03ms IncrementalHoareTripleChecker+Time [2021-11-04 16:48:50,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 5417 Unknown, 0 Unchecked, 7.74ms Time], IncrementalHoareTripleChecker [28 Valid, 5389 Invalid, 0 Unknown, 0 Unchecked, 2109.03ms Time] [2021-11-04 16:48:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-11-04 16:48:50,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2195. [2021-11-04 16:48:50,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 1694 states have (on average 1.6186540731995278) internal successors, (2742), 2194 states have internal predecessors, (2742), 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) [2021-11-04 16:48:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 2742 transitions. [2021-11-04 16:48:50,369 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 2742 transitions. Word has length 96 [2021-11-04 16:48:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:48:50,370 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 2742 transitions. [2021-11-04 16:48:50,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2021-11-04 16:48:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 2742 transitions. [2021-11-04 16:48:50,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 16:48:50,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:48:50,371 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:48:50,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-04 16:48:50,584 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 [2021-11-04 16:48:50,584 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:48:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:48:50,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1663743951, now seen corresponding path program 1 times [2021-11-04 16:48:50,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:48:50,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578863236] [2021-11-04 16:48:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:48:50,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:48:50,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:48:50,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133450821] [2021-11-04 16:48:50,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:48:50,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:48:50,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:48:50,599 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) [2021-11-04 16:48:50,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-04 16:48:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:48:50,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:48:50,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:48:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:48:50,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:48:50,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:48:50,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578863236] [2021-11-04 16:48:50,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:48:50,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133450821] [2021-11-04 16:48:50,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133450821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:48:50,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:48:50,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:48:50,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293164284] [2021-11-04 16:48:50,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:48:50,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:48:50,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:48:50,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:48:50,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:48:50,881 INFO L87 Difference]: Start difference. First operand 2195 states and 2742 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-11-04 16:48:54,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:48:54,204 INFO L93 Difference]: Finished difference Result 4378 states and 5472 transitions. [2021-11-04 16:48:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:48:54,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 96 [2021-11-04 16:48:54,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:48:54,215 INFO L225 Difference]: With dead ends: 4378 [2021-11-04 16:48:54,215 INFO L226 Difference]: Without dead ends: 2187 [2021-11-04 16:48:54,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:48:54,219 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2688 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 5398 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2766.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2688 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.47ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3253.17ms IncrementalHoareTripleChecker+Time [2021-11-04 16:48:54,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2688 Valid, 0 Invalid, 5422 Unknown, 0 Unchecked, 9.47ms Time], IncrementalHoareTripleChecker [24 Valid, 5398 Invalid, 0 Unknown, 0 Unchecked, 3253.17ms Time] [2021-11-04 16:48:54,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2021-11-04 16:48:54,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2181. [2021-11-04 16:48:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 1680 states have (on average 1.6196428571428572) internal successors, (2721), 2180 states have internal predecessors, (2721), 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) [2021-11-04 16:48:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 2721 transitions. [2021-11-04 16:48:54,243 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 2721 transitions. Word has length 96 [2021-11-04 16:48:54,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:48:54,244 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 2721 transitions. [2021-11-04 16:48:54,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-11-04 16:48:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 2721 transitions. [2021-11-04 16:48:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 16:48:54,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:48:54,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:48:54,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-04 16:48:54,459 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 [2021-11-04 16:48:54,460 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:48:54,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:48:54,460 INFO L85 PathProgramCache]: Analyzing trace with hash 570124223, now seen corresponding path program 1 times [2021-11-04 16:48:54,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:48:54,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503050457] [2021-11-04 16:48:54,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:48:54,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:48:54,470 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:48:54,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309276663] [2021-11-04 16:48:54,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:48:54,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:48:54,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:48:54,476 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) [2021-11-04 16:48:54,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-04 16:48:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:48:54,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:48:54,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:48:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 16:48:54,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:48:54,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:48:54,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503050457] [2021-11-04 16:48:54,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:48:54,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309276663] [2021-11-04 16:48:54,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309276663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:48:54,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:48:54,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:48:54,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332280732] [2021-11-04 16:48:54,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:48:54,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:48:54,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:48:54,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:48:54,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:48:54,734 INFO L87 Difference]: Start difference. First operand 2181 states and 2721 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-11-04 16:48:57,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:48:57,655 INFO L93 Difference]: Finished difference Result 4255 states and 5314 transitions. [2021-11-04 16:48:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:48:57,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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 96 [2021-11-04 16:48:57,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:48:57,661 INFO L225 Difference]: With dead ends: 4255 [2021-11-04 16:48:57,661 INFO L226 Difference]: Without dead ends: 2173 [2021-11-04 16:48:57,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:48:57,664 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2571 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 5488 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2387.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2571 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.43ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2860.13ms IncrementalHoareTripleChecker+Time [2021-11-04 16:48:57,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2571 Valid, 0 Invalid, 5512 Unknown, 0 Unchecked, 7.43ms Time], IncrementalHoareTripleChecker [24 Valid, 5488 Invalid, 0 Unknown, 0 Unchecked, 2860.13ms Time] [2021-11-04 16:48:57,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2173 states. [2021-11-04 16:48:57,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2173 to 2167. [2021-11-04 16:48:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 1666 states have (on average 1.6206482593037215) internal successors, (2700), 2166 states have internal predecessors, (2700), 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) [2021-11-04 16:48:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 2700 transitions. [2021-11-04 16:48:57,687 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 2700 transitions. Word has length 96 [2021-11-04 16:48:57,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:48:57,688 INFO L470 AbstractCegarLoop]: Abstraction has 2167 states and 2700 transitions. [2021-11-04 16:48:57,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-11-04 16:48:57,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 2700 transitions. [2021-11-04 16:48:57,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 16:48:57,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:48:57,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:48:57,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-04 16:48:57,908 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 [2021-11-04 16:48:57,908 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:48:57,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:48:57,908 INFO L85 PathProgramCache]: Analyzing trace with hash -312724623, now seen corresponding path program 1 times [2021-11-04 16:48:57,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:48:57,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622120800] [2021-11-04 16:48:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:48:57,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:48:57,918 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:48:57,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182902324] [2021-11-04 16:48:57,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:48:57,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:48:57,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:48:57,921 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) [2021-11-04 16:48:57,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-04 16:48:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:48:58,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 16:48:58,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:48:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:48:58,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:48:58,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:48:58,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622120800] [2021-11-04 16:48:58,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:48:58,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182902324] [2021-11-04 16:48:58,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182902324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:48:58,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:48:58,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:48:58,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71083146] [2021-11-04 16:48:58,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:48:58,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:48:58,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:48:58,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:48:58,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:48:58,231 INFO L87 Difference]: Start difference. First operand 2167 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 16:49:01,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:49:01,455 INFO L93 Difference]: Finished difference Result 6426 states and 8004 transitions. [2021-11-04 16:49:01,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:49:01,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-04 16:49:01,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:49:01,465 INFO L225 Difference]: With dead ends: 6426 [2021-11-04 16:49:01,465 INFO L226 Difference]: Without dead ends: 4263 [2021-11-04 16:49:01,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:49:01,467 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2569 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 5402 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2474.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.32ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3135.12ms IncrementalHoareTripleChecker+Time [2021-11-04 16:49:01,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2569 Valid, 0 Invalid, 5405 Unknown, 0 Unchecked, 7.32ms Time], IncrementalHoareTripleChecker [3 Valid, 5402 Invalid, 0 Unknown, 0 Unchecked, 3135.12ms Time] [2021-11-04 16:49:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2021-11-04 16:49:01,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 3261. [2021-11-04 16:49:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3261 states, 2760 states have (on average 1.7409420289855073) internal successors, (4805), 3260 states have internal predecessors, (4805), 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) [2021-11-04 16:49:01,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 4805 transitions. [2021-11-04 16:49:01,509 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 4805 transitions. Word has length 96 [2021-11-04 16:49:01,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:49:01,509 INFO L470 AbstractCegarLoop]: Abstraction has 3261 states and 4805 transitions. [2021-11-04 16:49:01,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2021-11-04 16:49:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 4805 transitions. [2021-11-04 16:49:01,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-04 16:49:01,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:49:01,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:49:01,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-04 16:49:01,723 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 [2021-11-04 16:49:01,724 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:49:01,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:49:01,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1091132224, now seen corresponding path program 1 times [2021-11-04 16:49:01,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:49:01,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121006908] [2021-11-04 16:49:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:49:01,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:49:01,738 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:49:01,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259810926] [2021-11-04 16:49:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:49:01,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:49:01,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:49:01,740 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) [2021-11-04 16:49:01,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-04 16:49:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:49:01,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-04 16:49:01,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:49:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 16:49:01,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:49:01,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:49:01,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121006908] [2021-11-04 16:49:01,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:49:01,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259810926] [2021-11-04 16:49:01,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259810926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:49:01,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:49:01,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 16:49:01,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057565630] [2021-11-04 16:49:01,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:49:01,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 16:49:01,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:49:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 16:49:01,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:49:01,979 INFO L87 Difference]: Start difference. First operand 3261 states and 4805 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:49:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:49:04,315 INFO L93 Difference]: Finished difference Result 6476 states and 9561 transitions. [2021-11-04 16:49:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 16:49:04,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-04 16:49:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:49:04,323 INFO L225 Difference]: With dead ends: 6476 [2021-11-04 16:49:04,324 INFO L226 Difference]: Without dead ends: 3263 [2021-11-04 16:49:04,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 16:49:04,326 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 5370 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1811.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.70ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2273.25ms IncrementalHoareTripleChecker+Time [2021-11-04 16:49:04,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 5372 Unknown, 0 Unchecked, 5.70ms Time], IncrementalHoareTripleChecker [2 Valid, 5370 Invalid, 0 Unknown, 0 Unchecked, 2273.25ms Time] [2021-11-04 16:49:04,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2021-11-04 16:49:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 3263. [2021-11-04 16:49:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 2762 states have (on average 1.7404055032585084) internal successors, (4807), 3262 states have internal predecessors, (4807), 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) [2021-11-04 16:49:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4807 transitions. [2021-11-04 16:49:04,367 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4807 transitions. Word has length 103 [2021-11-04 16:49:04,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:49:04,367 INFO L470 AbstractCegarLoop]: Abstraction has 3263 states and 4807 transitions. [2021-11-04 16:49:04,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:49:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4807 transitions. [2021-11-04 16:49:04,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-04 16:49:04,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:49:04,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:49:04,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-04 16:49:04,583 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 [2021-11-04 16:49:04,584 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:49:04,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:49:04,584 INFO L85 PathProgramCache]: Analyzing trace with hash 77652065, now seen corresponding path program 1 times [2021-11-04 16:49:04,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:49:04,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900566294] [2021-11-04 16:49:04,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:49:04,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:49:04,594 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:49:04,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531312190] [2021-11-04 16:49:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:49:04,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:49:04,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:49:04,596 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) [2021-11-04 16:49:04,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-04 16:49:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:49:04,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 16:49:04,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:49:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 16:49:04,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:49:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-04 16:49:05,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:49:05,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900566294] [2021-11-04 16:49:05,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:49:05,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531312190] [2021-11-04 16:49:05,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531312190] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:49:05,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:49:05,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-04 16:49:05,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381870398] [2021-11-04 16:49:05,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:49:05,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-04 16:49:05,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:49:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-04 16:49:05,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:49:05,034 INFO L87 Difference]: Start difference. First operand 3263 states and 4807 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:49:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:49:08,253 INFO L93 Difference]: Finished difference Result 6484 states and 9573 transitions. [2021-11-04 16:49:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-04 16:49:08,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-04 16:49:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:49:08,262 INFO L225 Difference]: With dead ends: 6484 [2021-11-04 16:49:08,262 INFO L226 Difference]: Without dead ends: 3269 [2021-11-04 16:49:08,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.45ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-04 16:49:08,265 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 5354 mSDsCounter, 0 mSdLazyCounter, 8058 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2490.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.45ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 8058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3133.51ms IncrementalHoareTripleChecker+Time [2021-11-04 16:49:08,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 8071 Unknown, 0 Unchecked, 9.45ms Time], IncrementalHoareTripleChecker [13 Valid, 8058 Invalid, 0 Unknown, 0 Unchecked, 3133.51ms Time] [2021-11-04 16:49:08,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2021-11-04 16:49:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3269. [2021-11-04 16:49:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 2768 states have (on average 1.738800578034682) internal successors, (4813), 3268 states have internal predecessors, (4813), 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) [2021-11-04 16:49:08,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 4813 transitions. [2021-11-04 16:49:08,313 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 4813 transitions. Word has length 105 [2021-11-04 16:49:08,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:49:08,314 INFO L470 AbstractCegarLoop]: Abstraction has 3269 states and 4813 transitions. [2021-11-04 16:49:08,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 16:49:08,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 4813 transitions. [2021-11-04 16:49:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-04 16:49:08,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:49:08,316 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:49:08,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-04 16:49:08,526 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 [2021-11-04 16:49:08,527 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:49:08,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:49:08,527 INFO L85 PathProgramCache]: Analyzing trace with hash -383784704, now seen corresponding path program 2 times [2021-11-04 16:49:08,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:49:08,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404775363] [2021-11-04 16:49:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:49:08,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:49:08,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:49:08,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644342981] [2021-11-04 16:49:08,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:49:08,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:49:08,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:49:08,538 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) [2021-11-04 16:49:08,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-04 16:49:08,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 16:49:08,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:49:08,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-04 16:49:08,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:49:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 16:49:08,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:49:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 16:49:09,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:49:09,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404775363] [2021-11-04 16:49:09,035 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:49:09,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644342981] [2021-11-04 16:49:09,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644342981] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:49:09,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:49:09,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-04 16:49:09,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042957839] [2021-11-04 16:49:09,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:49:09,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-04 16:49:09,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:49:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-04 16:49:09,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 16:49:09,037 INFO L87 Difference]: Start difference. First operand 3269 states and 4813 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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) [2021-11-04 16:49:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:49:13,177 INFO L93 Difference]: Finished difference Result 6502 states and 9597 transitions. [2021-11-04 16:49:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-04 16:49:13,177 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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 111 [2021-11-04 16:49:13,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:49:13,184 INFO L225 Difference]: With dead ends: 6502 [2021-11-04 16:49:13,185 INFO L226 Difference]: Without dead ends: 3281 [2021-11-04 16:49:13,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.86ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-04 16:49:13,188 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 8031 mSDsCounter, 0 mSdLazyCounter, 10752 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3253.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.27ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 10752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4030.44ms IncrementalHoareTripleChecker+Time [2021-11-04 16:49:13,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 10785 Unknown, 0 Unchecked, 13.27ms Time], IncrementalHoareTripleChecker [33 Valid, 10752 Invalid, 0 Unknown, 0 Unchecked, 4030.44ms Time] [2021-11-04 16:49:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2021-11-04 16:49:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3281. [2021-11-04 16:49:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 2780 states have (on average 1.735611510791367) internal successors, (4825), 3280 states have internal predecessors, (4825), 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) [2021-11-04 16:49:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4825 transitions. [2021-11-04 16:49:13,224 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4825 transitions. Word has length 111 [2021-11-04 16:49:13,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:49:13,224 INFO L470 AbstractCegarLoop]: Abstraction has 3281 states and 4825 transitions. [2021-11-04 16:49:13,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 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) [2021-11-04 16:49:13,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4825 transitions. [2021-11-04 16:49:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-04 16:49:13,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:49:13,225 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:49:13,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-04 16:49:13,443 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 [2021-11-04 16:49:13,443 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:49:13,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:49:13,443 INFO L85 PathProgramCache]: Analyzing trace with hash 562885024, now seen corresponding path program 3 times [2021-11-04 16:49:13,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:49:13,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595629122] [2021-11-04 16:49:13,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:49:13,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:49:13,452 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:49:13,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836634895] [2021-11-04 16:49:13,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 16:49:13,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:49:13,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:49:13,456 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) [2021-11-04 16:49:13,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-04 16:49:13,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-04 16:49:13,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:49:13,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-04 16:49:13,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:49:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-04 16:49:13,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-04 16:49:13,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:49:13,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595629122] [2021-11-04 16:49:13,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:49:13,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836634895] [2021-11-04 16:49:13,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836634895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 16:49:13,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 16:49:13,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-04 16:49:13,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086252868] [2021-11-04 16:49:13,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 16:49:13,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 16:49:13,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:49:13,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 16:49:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 16:49:13,780 INFO L87 Difference]: Start difference. First operand 3281 states and 4825 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-04 16:49:15,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:49:15,529 INFO L93 Difference]: Finished difference Result 5464 states and 7541 transitions. [2021-11-04 16:49:15,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-04 16:49:15,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 123 [2021-11-04 16:49:15,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:49:15,534 INFO L225 Difference]: With dead ends: 5464 [2021-11-04 16:49:15,535 INFO L226 Difference]: Without dead ends: 2231 [2021-11-04 16:49:15,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 16:49:15,548 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5258 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1294.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5258 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.78ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1667.18ms IncrementalHoareTripleChecker+Time [2021-11-04 16:49:15,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5258 Valid, 0 Invalid, 2790 Unknown, 0 Unchecked, 11.78ms Time], IncrementalHoareTripleChecker [1 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 1667.18ms Time] [2021-11-04 16:49:15,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2021-11-04 16:49:15,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2231. [2021-11-04 16:49:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 1730 states have (on average 1.5994219653179191) internal successors, (2767), 2230 states have internal predecessors, (2767), 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) [2021-11-04 16:49:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2767 transitions. [2021-11-04 16:49:15,572 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2767 transitions. Word has length 123 [2021-11-04 16:49:15,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:49:15,572 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 2767 transitions. [2021-11-04 16:49:15,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-04 16:49:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2767 transitions. [2021-11-04 16:49:15,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-04 16:49:15,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:49:15,573 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:49:15,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-04 16:49:15,783 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 [2021-11-04 16:49:15,783 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:49:15,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:49:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash 455290938, now seen corresponding path program 1 times [2021-11-04 16:49:15,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:49:15,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158756490] [2021-11-04 16:49:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:49:15,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:49:15,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:49:15,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419014497] [2021-11-04 16:49:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:49:15,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:49:15,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:49:15,796 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) [2021-11-04 16:49:15,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-04 16:49:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 16:49:15,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-04 16:49:15,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:49:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 16:49:16,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:49:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-04 16:49:16,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:49:16,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158756490] [2021-11-04 16:49:16,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:49:16,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419014497] [2021-11-04 16:49:16,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419014497] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:49:16,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:49:16,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-04 16:49:16,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877055598] [2021-11-04 16:49:16,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:49:16,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-04 16:49:16,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:49:16,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-04 16:49:16,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 16:49:16,617 INFO L87 Difference]: Start difference. First operand 2231 states and 2767 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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) [2021-11-04 16:49:23,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:49:23,405 INFO L93 Difference]: Finished difference Result 4425 states and 5515 transitions. [2021-11-04 16:49:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-04 16:49:23,407 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 130 [2021-11-04 16:49:23,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:49:23,411 INFO L225 Difference]: With dead ends: 4425 [2021-11-04 16:49:23,411 INFO L226 Difference]: Without dead ends: 2255 [2021-11-04 16:49:23,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 249.74ms TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-04 16:49:23,413 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 10704 mSDsCounter, 0 mSdLazyCounter, 13453 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5127.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.69ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 13453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6651.61ms IncrementalHoareTripleChecker+Time [2021-11-04 16:49:23,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13538 Unknown, 0 Unchecked, 17.69ms Time], IncrementalHoareTripleChecker [85 Valid, 13453 Invalid, 0 Unknown, 0 Unchecked, 6651.61ms Time] [2021-11-04 16:49:23,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-11-04 16:49:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2255. [2021-11-04 16:49:23,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1754 states have (on average 1.5912200684150513) internal successors, (2791), 2254 states have internal predecessors, (2791), 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) [2021-11-04 16:49:23,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2791 transitions. [2021-11-04 16:49:23,436 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2791 transitions. Word has length 130 [2021-11-04 16:49:23,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:49:23,436 INFO L470 AbstractCegarLoop]: Abstraction has 2255 states and 2791 transitions. [2021-11-04 16:49:23,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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) [2021-11-04 16:49:23,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2791 transitions. [2021-11-04 16:49:23,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-04 16:49:23,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:49:23,438 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:49:23,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-04 16:49:23,655 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 [2021-11-04 16:49:23,655 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:49:23,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:49:23,656 INFO L85 PathProgramCache]: Analyzing trace with hash -535515398, now seen corresponding path program 2 times [2021-11-04 16:49:23,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:49:23,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160279014] [2021-11-04 16:49:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:49:23,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:49:23,670 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:49:23,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408395317] [2021-11-04 16:49:23,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 16:49:23,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:49:23,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:49:23,673 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) [2021-11-04 16:49:23,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-04 16:49:23,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-04 16:49:23,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-04 16:49:23,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-04 16:49:23,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 16:49:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 16:49:24,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 16:49:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-04 16:49:25,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 16:49:25,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160279014] [2021-11-04 16:49:25,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-04 16:49:25,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408395317] [2021-11-04 16:49:25,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408395317] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 16:49:25,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-04 16:49:25,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2021-11-04 16:49:25,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343936388] [2021-11-04 16:49:25,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-04 16:49:25,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-04 16:49:25,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 16:49:25,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-04 16:49:25,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 16:49:25,706 INFO L87 Difference]: Start difference. First operand 2255 states and 2791 transitions. Second operand has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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) [2021-11-04 16:49:36,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 16:49:36,055 INFO L93 Difference]: Finished difference Result 4481 states and 5591 transitions. [2021-11-04 16:49:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-04 16:49:36,056 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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 154 [2021-11-04 16:49:36,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 16:49:36,059 INFO L225 Difference]: With dead ends: 4481 [2021-11-04 16:49:36,059 INFO L226 Difference]: Without dead ends: 2299 [2021-11-04 16:49:36,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1323.02ms TimeCoverageRelationStatistics Valid=1127, Invalid=1129, Unknown=0, NotChecked=0, Total=2256 [2021-11-04 16:49:36,062 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 13380 mSDsCounter, 0 mSdLazyCounter, 16180 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7792.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.42ms SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 16180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10107.75ms IncrementalHoareTripleChecker+Time [2021-11-04 16:49:36,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 16360 Unknown, 0 Unchecked, 24.42ms Time], IncrementalHoareTripleChecker [180 Valid, 16180 Invalid, 0 Unknown, 0 Unchecked, 10107.75ms Time] [2021-11-04 16:49:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2021-11-04 16:49:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2299. [2021-11-04 16:49:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1798 states have (on average 1.5767519466073414) internal successors, (2835), 2298 states have internal predecessors, (2835), 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) [2021-11-04 16:49:36,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 2835 transitions. [2021-11-04 16:49:36,085 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 2835 transitions. Word has length 154 [2021-11-04 16:49:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 16:49:36,086 INFO L470 AbstractCegarLoop]: Abstraction has 2299 states and 2835 transitions. [2021-11-04 16:49:36,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.2708333333333335) internal successors, (157), 48 states have internal predecessors, (157), 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) [2021-11-04 16:49:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 2835 transitions. [2021-11-04 16:49:36,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-04 16:49:36,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 16:49:36,087 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 16:49:36,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-04 16:49:36,296 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 [2021-11-04 16:49:36,296 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr500ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 498 more)] === [2021-11-04 16:49:36,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 16:49:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1925272410, now seen corresponding path program 3 times [2021-11-04 16:49:36,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 16:49:36,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195154494] [2021-11-04 16:49:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 16:49:36,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 16:49:36,309 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-04 16:49:36,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419630476] [2021-11-04 16:49:36,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-04 16:49:36,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 16:49:36,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 16:49:36,310 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) [2021-11-04 16:49:36,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Killed by 15