./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0 --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 b0db5597ff96f0e5a728327333d32dd7df56f4b1fb643f99ebf0f69cacecd717 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:52:15,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:52:15,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:52:16,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:52:16,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:52:16,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:52:16,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:52:16,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:52:16,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:52:16,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:52:16,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:52:16,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:52:16,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:52:16,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:52:16,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:52:16,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:52:16,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:52:16,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:52:16,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:52:16,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:52:16,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:52:16,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:52:16,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:52:16,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:52:16,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:52:16,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:52:16,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:52:16,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:52:16,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:52:16,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:52:16,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:52:16,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:52:16,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:52:16,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:52:16,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:52:16,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:52:16,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:52:16,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:52:16,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:52:16,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:52:16,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:52:16,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:52:16,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:52:16,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:52:16,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:52:16,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:52:16,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:52:16,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:52:16,084 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:52:16,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:52:16,085 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:52:16,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:52:16,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:52:16,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:52:16,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:52:16,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:52:16,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:52:16,087 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:52:16,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:52:16,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:52:16,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:52:16,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:52:16,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:52:16,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:52:16,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:52:16,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:52:16,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:52:16,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:52:16,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:52:16,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:52:16,090 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:52:16,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:52:16,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:52:16,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:52:16,091 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0db5597ff96f0e5a728327333d32dd7df56f4b1fb643f99ebf0f69cacecd717 [2021-11-22 14:52:16,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:52:16,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:52:16,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:52:16,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:52:16,384 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:52:16,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/array-fpi/ifeqn4.c [2021-11-22 14:52:16,452 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/data/354b10502/10d16c9bff2a4cea816158e3fb4ec4c5/FLAGf09f9d2dc [2021-11-22 14:52:16,864 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:52:16,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/sv-benchmarks/c/array-fpi/ifeqn4.c [2021-11-22 14:52:16,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/data/354b10502/10d16c9bff2a4cea816158e3fb4ec4c5/FLAGf09f9d2dc [2021-11-22 14:52:17,268 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/data/354b10502/10d16c9bff2a4cea816158e3fb4ec4c5 [2021-11-22 14:52:17,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:52:17,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:52:17,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:52:17,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:52:17,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:52:17,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:52:17" (1/1) ... [2021-11-22 14:52:17,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51310386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17, skipping insertion in model container [2021-11-22 14:52:17,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:52:17" (1/1) ... [2021-11-22 14:52:17,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:52:17,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:52:17,501 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/sv-benchmarks/c/array-fpi/ifeqn4.c[589,602] [2021-11-22 14:52:17,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:52:17,527 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:52:17,540 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/sv-benchmarks/c/array-fpi/ifeqn4.c[589,602] [2021-11-22 14:52:17,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:52:17,564 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:52:17,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17 WrapperNode [2021-11-22 14:52:17,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:52:17,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:52:17,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:52:17,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:52:17,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17" (1/1) ... [2021-11-22 14:52:17,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17" (1/1) ... [2021-11-22 14:52:17,604 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-11-22 14:52:17,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:52:17,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:52:17,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:52:17,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:52:17,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17" (1/1) ... [2021-11-22 14:52:17,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17" (1/1) ... [2021-11-22 14:52:17,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17" (1/1) ... [2021-11-22 14:52:17,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17" (1/1) ... [2021-11-22 14:52:17,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17" (1/1) ... [2021-11-22 14:52:17,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17" (1/1) ... [2021-11-22 14:52:17,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17" (1/1) ... [2021-11-22 14:52:17,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:52:17,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:52:17,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:52:17,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:52:17,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17" (1/1) ... [2021-11-22 14:52:17,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:52:17,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:52:17,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:52:17,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:52:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:52:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:52:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 14:52:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 14:52:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:52:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:52:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 14:52:17,796 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:52:17,797 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:52:17,952 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:52:17,959 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:52:17,959 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-22 14:52:17,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:52:17 BoogieIcfgContainer [2021-11-22 14:52:17,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:52:17,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:52:17,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:52:17,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:52:17,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:52:17" (1/3) ... [2021-11-22 14:52:17,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709a4a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:52:17, skipping insertion in model container [2021-11-22 14:52:17,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:52:17" (2/3) ... [2021-11-22 14:52:17,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709a4a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:52:17, skipping insertion in model container [2021-11-22 14:52:17,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:52:17" (3/3) ... [2021-11-22 14:52:17,970 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn4.c [2021-11-22 14:52:17,976 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:52:17,976 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 14:52:18,061 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:52:18,069 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 [2021-11-22 14:52:18,069 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 14:52:18,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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) [2021-11-22 14:52:18,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 14:52:18,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:18,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:18,107 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:18,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:18,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2021-11-22 14:52:18,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:18,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94507324] [2021-11-22 14:52:18,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:18,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:18,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:18,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94507324] [2021-11-22 14:52:18,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94507324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:52:18,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:52:18,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:52:18,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870280845] [2021-11-22 14:52:18,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:52:18,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:52:18,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:18,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:52:18,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:52:18,355 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-22 14:52:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:18,371 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-11-22 14:52:18,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:52:18,373 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-22 14:52:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:18,382 INFO L225 Difference]: With dead ends: 42 [2021-11-22 14:52:18,382 INFO L226 Difference]: Without dead ends: 19 [2021-11-22 14:52:18,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:52:18,389 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:18,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:52:18,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-22 14:52:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-22 14:52:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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) [2021-11-22 14:52:18,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-22 14:52:18,444 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-11-22 14:52:18,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:18,445 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-22 14:52:18,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-22 14:52:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-22 14:52:18,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 14:52:18,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:18,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:18,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:52:18,448 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:18,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:18,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2021-11-22 14:52:18,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:18,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073680463] [2021-11-22 14:52:18,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:18,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:18,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:18,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073680463] [2021-11-22 14:52:18,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073680463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:52:18,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:52:18,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:52:18,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45116943] [2021-11-22 14:52:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:52:18,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:52:18,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:18,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:52:18,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:52:18,547 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-22 14:52:18,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:18,626 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-11-22 14:52:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:52:18,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-11-22 14:52:18,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:18,630 INFO L225 Difference]: With dead ends: 45 [2021-11-22 14:52:18,630 INFO L226 Difference]: Without dead ends: 31 [2021-11-22 14:52:18,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:52:18,633 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:18,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:52:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-22 14:52:18,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-11-22 14:52:18,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2021-11-22 14:52:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-22 14:52:18,649 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-11-22 14:52:18,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:18,650 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-22 14:52:18,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-22 14:52:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-22 14:52:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 14:52:18,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:18,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:18,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:52:18,652 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:18,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:18,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2021-11-22 14:52:18,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:18,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606635624] [2021-11-22 14:52:18,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:18,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:18,677 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:52:18,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808192531] [2021-11-22 14:52:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:18,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:18,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:52:18,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:52:18,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:52:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:18,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 14:52:18,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:52:18,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 14:52:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 14:52:19,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:52:19,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:19,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606635624] [2021-11-22 14:52:19,041 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:52:19,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808192531] [2021-11-22 14:52:19,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808192531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:52:19,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:52:19,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:52:19,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110929464] [2021-11-22 14:52:19,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:52:19,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:52:19,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:19,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:52:19,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:52:19,045 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-22 14:52:19,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:19,160 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-11-22 14:52:19,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:52:19,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2021-11-22 14:52:19,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:19,164 INFO L225 Difference]: With dead ends: 40 [2021-11-22 14:52:19,164 INFO L226 Difference]: Without dead ends: 38 [2021-11-22 14:52:19,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:52:19,170 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:19,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 62 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:52:19,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-22 14:52:19,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2021-11-22 14:52:19,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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) [2021-11-22 14:52:19,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-11-22 14:52:19,184 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2021-11-22 14:52:19,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:19,184 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-11-22 14:52:19,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-11-22 14:52:19,184 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-11-22 14:52:19,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 14:52:19,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:19,185 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:19,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:52:19,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-22 14:52:19,386 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:19,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:19,387 INFO L85 PathProgramCache]: Analyzing trace with hash 259417010, now seen corresponding path program 1 times [2021-11-22 14:52:19,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:19,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533388321] [2021-11-22 14:52:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:19,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:19,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:52:19,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483555469] [2021-11-22 14:52:19,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:19,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:19,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:52:19,454 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:52:19,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 14:52:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:19,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 14:52:19,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:52:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:19,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:52:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:19,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:19,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533388321] [2021-11-22 14:52:19,690 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:52:19,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483555469] [2021-11-22 14:52:19,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483555469] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:52:19,691 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:52:19,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-22 14:52:19,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594881687] [2021-11-22 14:52:19,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:52:19,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 14:52:19,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 14:52:19,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:52:19,693 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-11-22 14:52:19,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:19,859 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-11-22 14:52:19,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 14:52:19,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 21 [2021-11-22 14:52:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:19,862 INFO L225 Difference]: With dead ends: 70 [2021-11-22 14:52:19,864 INFO L226 Difference]: Without dead ends: 43 [2021-11-22 14:52:19,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-22 14:52:19,868 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:19,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:52:19,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-22 14:52:19,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2021-11-22 14:52:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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) [2021-11-22 14:52:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-22 14:52:19,880 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2021-11-22 14:52:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:19,880 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-22 14:52:19,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-11-22 14:52:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-22 14:52:19,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 14:52:19,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:19,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:19,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:52:20,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:20,096 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:20,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:20,097 INFO L85 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times [2021-11-22 14:52:20,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:20,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117927459] [2021-11-22 14:52:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:20,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:20,126 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:52:20,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346019164] [2021-11-22 14:52:20,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:20,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:20,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:52:20,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:52:20,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 14:52:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:20,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-22 14:52:20,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:52:20,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 14:52:20,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:20,456 INFO L354 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2021-11-22 14:52:20,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 39 [2021-11-22 14:52:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 14:52:20,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:52:23,078 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:52:23,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 115 [2021-11-22 14:52:23,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2021-11-22 14:52:23,228 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:52:23,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 289 treesize of output 266 [2021-11-22 14:52:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 14:52:23,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:23,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117927459] [2021-11-22 14:52:23,373 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:52:23,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346019164] [2021-11-22 14:52:23,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346019164] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:52:23,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:52:23,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-11-22 14:52:23,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302572879] [2021-11-22 14:52:23,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:52:23,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 14:52:23,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:23,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 14:52:23,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-11-22 14:52:23,377 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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) [2021-11-22 14:52:23,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:23,541 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2021-11-22 14:52:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 14:52:23,542 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 24 [2021-11-22 14:52:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:23,543 INFO L225 Difference]: With dead ends: 50 [2021-11-22 14:52:23,543 INFO L226 Difference]: Without dead ends: 38 [2021-11-22 14:52:23,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=59, Invalid=149, Unknown=2, NotChecked=0, Total=210 [2021-11-22 14:52:23,544 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:23,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 65 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2021-11-22 14:52:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-22 14:52:23,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-11-22 14:52:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 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) [2021-11-22 14:52:23,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-11-22 14:52:23,550 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 24 [2021-11-22 14:52:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:23,550 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-11-22 14:52:23,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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) [2021-11-22 14:52:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-11-22 14:52:23,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 14:52:23,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:23,552 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:23,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 14:52:23,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:23,752 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:23,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:23,753 INFO L85 PathProgramCache]: Analyzing trace with hash -672376363, now seen corresponding path program 2 times [2021-11-22 14:52:23,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:23,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111645918] [2021-11-22 14:52:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:23,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:23,780 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:52:23,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829469375] [2021-11-22 14:52:23,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:52:23,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:23,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:52:23,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:52:23,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 14:52:23,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:52:23,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:52:23,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 14:52:23,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:52:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:23,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:52:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:24,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:24,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111645918] [2021-11-22 14:52:24,060 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:52:24,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829469375] [2021-11-22 14:52:24,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829469375] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:52:24,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:52:24,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-22 14:52:24,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694509971] [2021-11-22 14:52:24,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:52:24,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 14:52:24,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:24,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 14:52:24,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-22 14:52:24,064 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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) [2021-11-22 14:52:24,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:24,272 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2021-11-22 14:52:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 14:52:24,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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 27 [2021-11-22 14:52:24,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:24,275 INFO L225 Difference]: With dead ends: 98 [2021-11-22 14:52:24,275 INFO L226 Difference]: Without dead ends: 83 [2021-11-22 14:52:24,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-22 14:52:24,276 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 86 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:24,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 66 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:52:24,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-22 14:52:24,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 56. [2021-11-22 14:52:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 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) [2021-11-22 14:52:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2021-11-22 14:52:24,287 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 27 [2021-11-22 14:52:24,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:24,287 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2021-11-22 14:52:24,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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) [2021-11-22 14:52:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2021-11-22 14:52:24,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 14:52:24,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:24,294 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:24,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 14:52:24,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:24,508 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:24,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:24,509 INFO L85 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times [2021-11-22 14:52:24,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:24,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459846926] [2021-11-22 14:52:24,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:24,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:24,529 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:52:24,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989426267] [2021-11-22 14:52:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:24,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:24,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:52:24,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:52:24,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 14:52:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:52:24,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-22 14:52:24,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:52:24,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-22 14:52:24,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 14:52:24,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:24,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-22 14:52:24,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:24,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-22 14:52:25,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:25,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:25,082 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-22 14:52:25,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 42 [2021-11-22 14:52:25,375 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-22 14:52:25,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 38 [2021-11-22 14:52:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:25,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:52:26,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 127 [2021-11-22 14:52:26,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:26,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2021-11-22 14:52:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:52:26,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:52:26,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459846926] [2021-11-22 14:52:26,593 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:52:26,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989426267] [2021-11-22 14:52:26,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989426267] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:52:26,593 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:52:26,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-11-22 14:52:26,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780968025] [2021-11-22 14:52:26,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:52:26,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-22 14:52:26,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:52:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-22 14:52:26,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-11-22 14:52:26,595 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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) [2021-11-22 14:52:30,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:52:30,856 INFO L93 Difference]: Finished difference Result 210 states and 248 transitions. [2021-11-22 14:52:30,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-22 14:52:30,858 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 28 [2021-11-22 14:52:30,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:52:30,859 INFO L225 Difference]: With dead ends: 210 [2021-11-22 14:52:30,859 INFO L226 Difference]: Without dead ends: 143 [2021-11-22 14:52:30,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=388, Invalid=1334, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 14:52:30,865 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 185 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:52:30,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 196 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 332 Invalid, 0 Unknown, 59 Unchecked, 1.2s Time] [2021-11-22 14:52:30,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-22 14:52:30,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 89. [2021-11-22 14:52:30,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 88 states have internal predecessors, (109), 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) [2021-11-22 14:52:30,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2021-11-22 14:52:30,891 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 28 [2021-11-22 14:52:30,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:52:30,891 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2021-11-22 14:52:30,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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) [2021-11-22 14:52:30,891 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2021-11-22 14:52:30,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-22 14:52:30,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:52:30,893 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:52:30,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 14:52:31,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:31,112 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:52:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:52:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1487245307, now seen corresponding path program 3 times [2021-11-22 14:52:31,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:52:31,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129335778] [2021-11-22 14:52:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:52:31,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:52:31,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:52:31,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402041143] [2021-11-22 14:52:31,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 14:52:31,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:52:31,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:52:31,162 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:52:31,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 14:52:31,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-22 14:52:31,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:52:31,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-22 14:52:31,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:52:31,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 14:52:31,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:31,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:31,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:31,766 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-11-22 14:52:31,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 229 treesize of output 397 [2021-11-22 14:52:31,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:31,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:31,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:31,850 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-22 14:52:31,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 176 treesize of output 111 [2021-11-22 14:52:31,900 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 14:52:31,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:31,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:31,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:31,969 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-22 14:52:31,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 228 treesize of output 137 [2021-11-22 14:52:31,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:31,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:32,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:32,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:32,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:32,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:32,007 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-22 14:52:32,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 216 treesize of output 115 [2021-11-22 14:52:32,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:32,897 INFO L354 Elim1Store]: treesize reduction 1746, result has 15.9 percent of original size [2021-11-22 14:52:32,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 49 case distinctions, treesize of input 244 treesize of output 460 [2021-11-22 14:52:32,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:32,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:32,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:32,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:32,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:33,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:33,040 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-22 14:52:33,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 200 treesize of output 129 [2021-11-22 14:52:33,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:33,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:33,280 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-22 14:52:33,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 289 treesize of output 169 [2021-11-22 14:52:33,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:52:33,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:33,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:52:33,380 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-22 14:52:33,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 204 treesize of output 116 [2021-11-22 14:52:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 14:52:33,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:52:54,283 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:52:54,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 6617 treesize of output 6179 [2021-11-22 14:52:57,966 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-22 14:52:57,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1116 treesize of output 1004 [2021-11-22 14:55:06,500 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:55:06,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 485 treesize of output 442 [2021-11-22 14:55:16,321 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:55:16,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 108 [2021-11-22 14:55:17,884 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-22 14:55:17,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 85 [2021-11-22 14:56:14,081 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:56:14,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 108 [2021-11-22 14:56:19,684 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:56:19,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 110 [2021-11-22 14:56:26,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:56:26,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 202 [2021-11-22 14:57:12,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 78 [2021-11-22 14:57:12,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,210 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:57:12,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 127 treesize of output 170 [2021-11-22 14:57:12,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:57:12,682 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-22 14:57:12,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1186 treesize of output 1052 [2021-11-22 14:57:12,784 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 14:57:12,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2136 treesize of output 1910 [2021-11-22 14:57:13,068 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-22 14:57:13,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1186 treesize of output 1 [2021-11-22 14:57:13,157 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-22 14:57:13,183 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-22 14:57:13,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 576 treesize of output 1 [2021-11-22 14:57:13,201 INFO L354 Elim1Store]: treesize reduction 144, result has 0.7 percent of original size [2021-11-22 14:57:13,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1630 treesize of output 1 [2021-11-22 14:57:13,214 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-22 14:57:13,221 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-22 14:57:13,242 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-22 14:57:13,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 1 [2021-11-22 14:57:13,265 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-22 14:57:13,319 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-22 14:57:13,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1076 treesize of output 1 [2021-11-22 14:57:13,334 INFO L354 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2021-11-22 14:57:13,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 576 treesize of output 1 [2021-11-22 14:57:13,352 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-22 14:57:13,391 INFO L354 Elim1Store]: treesize reduction 138, result has 0.7 percent of original size [2021-11-22 14:57:13,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 3036 treesize of output 1 [2021-11-22 14:57:13,529 INFO L354 Elim1Store]: treesize reduction 76, result has 45.3 percent of original size [2021-11-22 14:57:13,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 6783 treesize of output 5063 [2021-11-22 14:57:14,981 INFO L354 Elim1Store]: treesize reduction 22, result has 4.3 percent of original size [2021-11-22 14:57:14,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 542 treesize of output 1 [2021-11-22 14:57:15,023 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-22 14:57:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 3 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 14:57:22,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:22,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129335778] [2021-11-22 14:57:22,073 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:57:22,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402041143] [2021-11-22 14:57:22,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402041143] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:57:22,073 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:57:22,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-11-22 14:57:22,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583872785] [2021-11-22 14:57:22,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:57:22,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-22 14:57:22,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:22,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-22 14:57:22,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=357, Unknown=10, NotChecked=0, Total=462 [2021-11-22 14:57:22,075 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 states have internal predecessors, (49), 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) [2021-11-22 14:57:24,984 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= 1 (select .cse0 |c_ULTIMATE.start_main_~b~0#1.offset|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_65| Int)) (or (let ((.cse20 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse5 (< 2147483647 .cse20)) (.cse6 (<= .cse20 2147483647)) (.cse11 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (and (or (and (or (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse1 (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (let ((.cse4 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse3 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse4 (- 34359738368))) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4 (- 34359738368))))))))) (store .cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_65| 4294967296) 8)) (let ((.cse2 (* (mod (+ |v_ULTIMATE.start_main_~i~0#1_65| 4294967295) 4294967296) 8))) (+ (select .cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2 (- 34359738368))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse1) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) .cse5) (or .cse6 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse7 (let ((.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse9 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) (let ((.cse10 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse9 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse10 (- 34359738368))) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse10 (- 34359738368))))))))) (store .cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_65| 4294967296) 8)) (let ((.cse8 (* (mod (+ |v_ULTIMATE.start_main_~i~0#1_65| 4294967295) 4294967296) 8))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse7) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse8 (- 34359738368))) (select .cse7 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse8 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (<= .cse11 2147483647)) (or (and (or .cse5 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse12 (let ((.cse14 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse14 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (let ((.cse15 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse14 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse15)) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse15)))))))) (store .cse12 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_65| 4294967296) 8)) (let ((.cse13 (* (mod (+ |v_ULTIMATE.start_main_~i~0#1_65| 4294967295) 4294967296) 8))) (+ (select .cse12 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse13 (- 34359738368))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse12) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse13 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))) (or .cse6 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (let ((.cse16 (let ((.cse18 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (store .cse18 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8) (- 34359738368)) (let ((.cse19 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse18 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse19)) (select (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse19)))))))) (store .cse16 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |v_ULTIMATE.start_main_~i~0#1_65| 4294967296) 8)) (let ((.cse17 (* (mod (+ |v_ULTIMATE.start_main_~i~0#1_65| 4294967295) 4294967296) 8))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse16) |ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse17 (- 34359738368))) (select .cse16 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse17 (- 34359738368))))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (< 2147483647 .cse11))))) (< |v_ULTIMATE.start_main_~i~0#1_65| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= c_~N~0 |v_ULTIMATE.start_main_~i~0#1_65|))) (exists ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.base| Int)) (let ((.cse22 (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (.cse21 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (and (= (select .cse21 (+ |c_ULTIMATE.start_main_~b~0#1.offset| 8)) (+ (select .cse22 0) 1)) (< |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 2 |ULTIMATE.start_main_~i~0#1|) (= (let ((.cse23 (* (mod (+ 4294967295 |ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse22 .cse23) (select .cse21 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse23)))) (select .cse21 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 8))))))) (= |c_ULTIMATE.start_main_~b~0#1.offset| 0) (or (= (select (store .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296) 8)) (let ((.cse24 (* (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse24 (- 34359738368))) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse24 (- 34359738368)))))) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (<= c_~N~0 |c_ULTIMATE.start_main_~i~0#1|)))) is different from false [2021-11-22 14:57:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:57,886 INFO L93 Difference]: Finished difference Result 179 states and 226 transitions. [2021-11-22 14:57:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-22 14:57:57,887 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 states have internal predecessors, (49), 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 30 [2021-11-22 14:57:57,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:57,888 INFO L225 Difference]: With dead ends: 179 [2021-11-22 14:57:57,889 INFO L226 Difference]: Without dead ends: 139 [2021-11-22 14:57:57,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 57.4s TimeCoverageRelationStatistics Valid=231, Invalid=875, Unknown=20, NotChecked=64, Total=1190 [2021-11-22 14:57:57,891 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 47 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:57,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 84 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 193 Invalid, 0 Unknown, 140 Unchecked, 0.6s Time] [2021-11-22 14:57:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-22 14:57:57,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2021-11-22 14:57:57,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.2695652173913043) internal successors, (146), 115 states have internal predecessors, (146), 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) [2021-11-22 14:57:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-11-22 14:57:57,908 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 146 transitions. Word has length 30 [2021-11-22 14:57:57,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:57,908 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-11-22 14:57:57,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 states have internal predecessors, (49), 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) [2021-11-22 14:57:57,909 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 146 transitions. [2021-11-22 14:57:57,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 14:57:57,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:57,910 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:57,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 14:57:58,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:58,115 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:58,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:58,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1708848056, now seen corresponding path program 2 times [2021-11-22 14:57:58,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:58,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009463414] [2021-11-22 14:57:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:58,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:58,139 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:57:58,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202821549] [2021-11-22 14:57:58,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:57:58,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:58,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:58,141 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:58,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 14:57:58,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:57:58,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:57:58,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 14:57:58,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:57:58,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:57:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 14:57:58,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:58,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009463414] [2021-11-22 14:57:58,523 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:57:58,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202821549] [2021-11-22 14:57:58,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202821549] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:57:58,524 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:57:58,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-11-22 14:57:58,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452461230] [2021-11-22 14:57:58,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:57:58,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 14:57:58,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:58,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 14:57:58,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-22 14:57:58,525 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 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) [2021-11-22 14:57:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:59,147 INFO L93 Difference]: Finished difference Result 259 states and 315 transitions. [2021-11-22 14:57:59,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 14:57:59,148 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 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 37 [2021-11-22 14:57:59,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:59,149 INFO L225 Difference]: With dead ends: 259 [2021-11-22 14:57:59,149 INFO L226 Difference]: Without dead ends: 203 [2021-11-22 14:57:59,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2021-11-22 14:57:59,152 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 142 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:59,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 122 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 14:57:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-22 14:57:59,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 152. [2021-11-22 14:57:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.2450331125827814) internal successors, (188), 151 states have internal predecessors, (188), 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) [2021-11-22 14:57:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 188 transitions. [2021-11-22 14:57:59,187 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 188 transitions. Word has length 37 [2021-11-22 14:57:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:59,187 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 188 transitions. [2021-11-22 14:57:59,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 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) [2021-11-22 14:57:59,188 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 188 transitions. [2021-11-22 14:57:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 14:57:59,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:59,195 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:59,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 14:57:59,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:59,416 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:57:59,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:59,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1173959464, now seen corresponding path program 3 times [2021-11-22 14:57:59,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:59,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140614596] [2021-11-22 14:57:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:59,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:59,442 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:57:59,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482451269] [2021-11-22 14:57:59,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 14:57:59,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:57:59,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:59,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:57:59,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 14:57:59,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-22 14:57:59,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:57:59,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 14:57:59,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:57:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 14:57:59,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:58:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-22 14:58:00,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:00,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140614596] [2021-11-22 14:58:00,394 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:58:00,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482451269] [2021-11-22 14:58:00,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482451269] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:58:00,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:58:00,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2021-11-22 14:58:00,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50527447] [2021-11-22 14:58:00,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:58:00,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 14:58:00,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 14:58:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-11-22 14:58:00,396 INFO L87 Difference]: Start difference. First operand 152 states and 188 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 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) [2021-11-22 14:58:01,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:01,765 INFO L93 Difference]: Finished difference Result 195 states and 229 transitions. [2021-11-22 14:58:01,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-22 14:58:01,767 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 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 37 [2021-11-22 14:58:01,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:01,768 INFO L225 Difference]: With dead ends: 195 [2021-11-22 14:58:01,768 INFO L226 Difference]: Without dead ends: 186 [2021-11-22 14:58:01,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=450, Invalid=1530, Unknown=0, NotChecked=0, Total=1980 [2021-11-22 14:58:01,770 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 194 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:01,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 100 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 14:58:01,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-22 14:58:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 152. [2021-11-22 14:58:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.2317880794701987) internal successors, (186), 151 states have internal predecessors, (186), 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) [2021-11-22 14:58:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 186 transitions. [2021-11-22 14:58:01,788 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 186 transitions. Word has length 37 [2021-11-22 14:58:01,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:01,789 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 186 transitions. [2021-11-22 14:58:01,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 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) [2021-11-22 14:58:01,789 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 186 transitions. [2021-11-22 14:58:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-22 14:58:01,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:01,790 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:01,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 14:58:02,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 14:58:02,005 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:58:02,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:02,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1129715953, now seen corresponding path program 4 times [2021-11-22 14:58:02,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:02,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453723205] [2021-11-22 14:58:02,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:02,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:02,023 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:58:02,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182607086] [2021-11-22 14:58:02,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 14:58:02,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:58:02,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:58:02,025 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:58:02,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb5bdc3-9ce8-40b1-ad56-d22afe1768d6/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 14:58:02,357 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 14:58:02,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:58:02,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-22 14:58:02,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:58:02,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-22 14:58:02,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-22 14:58:02,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:02,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 245 [2021-11-22 14:58:02,619 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 14:58:02,670 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 14:58:02,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 51 [2021-11-22 14:58:02,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 54 [2021-11-22 14:58:02,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 57 [2021-11-22 14:58:02,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:02,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2021-11-22 14:58:03,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2021-11-22 14:58:03,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:03,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:03,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:03,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:03,327 INFO L354 Elim1Store]: treesize reduction 86, result has 18.1 percent of original size [2021-11-22 14:58:03,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 30 case distinctions, treesize of input 254 treesize of output 506 [2021-11-22 14:58:03,406 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-22 14:58:03,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:03,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 375 treesize of output 228 [2021-11-22 14:58:03,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:03,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:03,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:03,970 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-22 14:58:03,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 346 treesize of output 206 [2021-11-22 14:58:04,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:04,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:04,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:04,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:04,038 INFO L354 Elim1Store]: treesize reduction 33, result has 8.3 percent of original size [2021-11-22 14:58:04,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 9 disjoint index pairs (out of 36 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 255 treesize of output 114 [2021-11-22 14:58:04,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:04,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:58:04,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 14:58:04,247 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-22 14:58:04,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 66 [2021-11-22 14:58:04,822 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-11-22 14:58:04,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 46 [2021-11-22 14:58:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:04,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:58:19,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3202990 treesize of output 3065774 [2021-11-22 15:00:45,131 WARN L227 SmtUtils]: Spent 2.42m on a formula simplification. DAG size of input: 735 DAG size of output: 717 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:00:45,190 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:00:45,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1479990 treesize of output 1224006 [2021-11-22 15:01:25,140 WARN L227 SmtUtils]: Spent 39.95s on a formula simplification. DAG size of input: 457 DAG size of output: 456 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:01:32,057 WARN L227 SmtUtils]: Spent 6.86s on a formula simplification that was a NOOP. DAG size: 458 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:02:43,377 WARN L227 SmtUtils]: Spent 10.26s on a formula simplification. DAG size of input: 434 DAG size of output: 434 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:03:00,002 WARN L227 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 434 DAG size of output: 434 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:03:23,446 WARN L227 SmtUtils]: Spent 15.40s on a formula simplification. DAG size of input: 436 DAG size of output: 436 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:24,032 WARN L227 SmtUtils]: Spent 8.71s on a formula simplification. DAG size of input: 427 DAG size of output: 427 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:35,958 WARN L227 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 429 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:04:52,965 WARN L227 SmtUtils]: Spent 8.62s on a formula simplification. DAG size of input: 427 DAG size of output: 427 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:05:17,963 WARN L227 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 427 DAG size of output: 427 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:06:14,027 WARN L227 SmtUtils]: Spent 8.62s on a formula simplification. DAG size of input: 427 DAG size of output: 427 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)