./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sqm.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sqm.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN --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 950fd5ff5cc9d2c5e3d846192e43f4963ef3abd0ec7056eb5d764989d48b2064 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:32:31,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:32:31,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:32:31,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:32:31,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:32:31,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:32:31,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:32:31,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:32:31,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:32:31,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:32:31,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:32:31,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:32:31,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:32:31,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:32:31,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:32:31,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:32:31,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:32:31,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:32:31,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:32:31,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:32:31,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:32:31,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:32:31,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:32:31,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:32:31,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:32:31,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:32:31,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:32:31,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:32:31,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:32:31,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:32:31,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:32:31,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:32:31,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:32:31,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:32:31,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:32:31,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:32:31,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:32:31,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:32:31,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:32:31,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:32:31,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:32:31,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:32:31,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:32:31,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:32:31,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:32:31,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:32:31,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:32:31,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:32:31,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:32:31,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:32:31,852 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:32:31,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:32:31,852 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:32:31,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:32:31,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:32:31,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:32:31,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:32:31,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:32:31,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:32:31,855 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:32:31,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:32:31,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:32:31,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:32:31,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:32:31,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:32:31,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:32:31,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:32:31,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:32:31,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:32:31,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:32:31,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:32:31,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:32:31,860 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:32:31,860 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:32:31,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:32:31,861 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_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 950fd5ff5cc9d2c5e3d846192e43f4963ef3abd0ec7056eb5d764989d48b2064 [2022-11-20 09:32:32,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:32:32,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:32:32,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:32:32,195 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:32:32,196 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:32:32,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-fpi/sqm.c [2022-11-20 09:32:35,591 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:32:35,819 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:32:35,820 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/sv-benchmarks/c/array-fpi/sqm.c [2022-11-20 09:32:35,827 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/data/6e0a5c487/d0c758c00f084df8a4308f77e58e48cc/FLAG902dfdd7c [2022-11-20 09:32:35,843 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/data/6e0a5c487/d0c758c00f084df8a4308f77e58e48cc [2022-11-20 09:32:35,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:32:35,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:32:35,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:32:35,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:32:35,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:32:35,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:35" (1/1) ... [2022-11-20 09:32:35,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aeeb422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:35, skipping insertion in model container [2022-11-20 09:32:35,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:32:35" (1/1) ... [2022-11-20 09:32:35,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:32:35,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:32:36,047 WARN L237 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_5f4baa2c-34b7-46aa-be0c-018253107776/sv-benchmarks/c/array-fpi/sqm.c[586,599] [2022-11-20 09:32:36,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:32:36,084 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:32:36,096 WARN L237 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_5f4baa2c-34b7-46aa-be0c-018253107776/sv-benchmarks/c/array-fpi/sqm.c[586,599] [2022-11-20 09:32:36,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:32:36,121 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:32:36,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36 WrapperNode [2022-11-20 09:32:36,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:32:36,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:32:36,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:32:36,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:32:36,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36" (1/1) ... [2022-11-20 09:32:36,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36" (1/1) ... [2022-11-20 09:32:36,171 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-11-20 09:32:36,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:32:36,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:32:36,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:32:36,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:32:36,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36" (1/1) ... [2022-11-20 09:32:36,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36" (1/1) ... [2022-11-20 09:32:36,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36" (1/1) ... [2022-11-20 09:32:36,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36" (1/1) ... [2022-11-20 09:32:36,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36" (1/1) ... [2022-11-20 09:32:36,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36" (1/1) ... [2022-11-20 09:32:36,198 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36" (1/1) ... [2022-11-20 09:32:36,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36" (1/1) ... [2022-11-20 09:32:36,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:32:36,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:32:36,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:32:36,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:32:36,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36" (1/1) ... [2022-11-20 09:32:36,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:32:36,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:36,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:32:36,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:32:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:32:36,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:32:36,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:32:36,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:32:36,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:32:36,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:32:36,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:32:36,413 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:32:36,416 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:32:36,726 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:32:36,734 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:32:36,734 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 09:32:36,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:36 BoogieIcfgContainer [2022-11-20 09:32:36,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:32:36,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:32:36,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:32:36,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:32:36,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:32:35" (1/3) ... [2022-11-20 09:32:36,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b1e72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:36, skipping insertion in model container [2022-11-20 09:32:36,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:32:36" (2/3) ... [2022-11-20 09:32:36,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b1e72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:32:36, skipping insertion in model container [2022-11-20 09:32:36,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:32:36" (3/3) ... [2022-11-20 09:32:36,749 INFO L112 eAbstractionObserver]: Analyzing ICFG sqm.c [2022-11-20 09:32:36,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:32:36,791 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:32:36,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:32:36,877 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c6a6969, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:32:36,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:32:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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) [2022-11-20 09:32:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 09:32:36,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:36,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:36,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:36,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:36,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2022-11-20 09:32:36,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:36,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854122383] [2022-11-20 09:32:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:36,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:37,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:37,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854122383] [2022-11-20 09:32:37,261 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 09:32:37,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377500075] [2022-11-20 09:32:37,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:37,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:37,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:37,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:37,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:32:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:37,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 09:32:37,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:37,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:37,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377500075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:37,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:37,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:32:37,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637565358] [2022-11-20 09:32:37,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:37,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:32:37,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:37,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:32:37,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:32:37,557 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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) [2022-11-20 09:32:37,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:37,576 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-11-20 09:32:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:32:37,579 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 [2022-11-20 09:32:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:37,590 INFO L225 Difference]: With dead ends: 38 [2022-11-20 09:32:37,590 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 09:32:37,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:32:37,598 INFO L413 NwaCegarLoop]: 24 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, 24 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 [2022-11-20 09:32:37,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:32:37,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 09:32:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-20 09:32:37,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-11-20 09:32:37,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-20 09:32:37,641 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-11-20 09:32:37,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:37,641 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-20 09:32:37,642 INFO L496 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) [2022-11-20 09:32:37,642 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-20 09:32:37,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 09:32:37,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:37,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:37,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 09:32:37,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 09:32:37,850 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:37,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2022-11-20 09:32:37,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:37,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021023825] [2022-11-20 09:32:37,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:37,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:37,889 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:37,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936970293] [2022-11-20 09:32:37,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:37,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:37,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:37,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:37,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:32:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:38,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 09:32:38,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:38,166 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 09:32:38,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 09:32:38,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:32:38,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:32:38,379 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-20 09:32:38,398 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 38 treesize of output 11 [2022-11-20 09:32:38,405 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-20 09:32:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:38,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:38,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:38,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021023825] [2022-11-20 09:32:38,538 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:38,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936970293] [2022-11-20 09:32:38,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936970293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:38,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:38,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:32:38,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210903311] [2022-11-20 09:32:38,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:38,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:32:38,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:38,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:32:38,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:32:38,551 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2022-11-20 09:32:38,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:38,685 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-11-20 09:32:38,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:32:38,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 [2022-11-20 09:32:38,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:38,686 INFO L225 Difference]: With dead ends: 34 [2022-11-20 09:32:38,687 INFO L226 Difference]: Without dead ends: 32 [2022-11-20 09:32:38,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:32:38,689 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:38,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 56 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:32:38,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-20 09:32:38,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-11-20 09:32:38,695 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) [2022-11-20 09:32:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-20 09:32:38,697 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-11-20 09:32:38,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:38,697 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-20 09:32:38,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2022-11-20 09:32:38,698 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-20 09:32:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 09:32:38,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:38,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:38,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 09:32:38,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:38,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:38,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:38,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2022-11-20 09:32:38,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:38,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136811863] [2022-11-20 09:32:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:38,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:38,949 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:38,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784767484] [2022-11-20 09:32:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:38,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:38,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:38,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:38,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:32:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:39,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:32:39,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:39,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:39,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:39,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136811863] [2022-11-20 09:32:39,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:39,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784767484] [2022-11-20 09:32:39,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784767484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:39,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:39,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:32:39,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677278137] [2022-11-20 09:32:39,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:39,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:32:39,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:39,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:32:39,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:32:39,080 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-11-20 09:32:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:39,172 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2022-11-20 09:32:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:32:39,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2022-11-20 09:32:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:39,179 INFO L225 Difference]: With dead ends: 49 [2022-11-20 09:32:39,179 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 09:32:39,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:32:39,184 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:39,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 29 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:32:39,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 09:32:39,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2022-11-20 09:32:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 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) [2022-11-20 09:32:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-20 09:32:39,202 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2022-11-20 09:32:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:39,203 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-20 09:32:39,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2022-11-20 09:32:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-20 09:32:39,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 09:32:39,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:39,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:39,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:39,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 09:32:39,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:39,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:39,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2022-11-20 09:32:39,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:39,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428039523] [2022-11-20 09:32:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:39,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:39,442 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:39,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610437388] [2022-11-20 09:32:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:39,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:39,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:39,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:39,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:32:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:39,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:32:39,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:39,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:39,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:39,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:39,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428039523] [2022-11-20 09:32:39,606 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:39,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610437388] [2022-11-20 09:32:39,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610437388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:39,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:39,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-11-20 09:32:39,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468797828] [2022-11-20 09:32:39,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:39,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:32:39,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:39,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:32:39,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:32:39,609 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-20 09:32:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:39,749 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-11-20 09:32:39,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:32:39,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 14 [2022-11-20 09:32:39,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:39,751 INFO L225 Difference]: With dead ends: 44 [2022-11-20 09:32:39,751 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 09:32:39,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:32:39,759 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:39,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 41 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:32:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 09:32:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2022-11-20 09:32:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 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) [2022-11-20 09:32:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-20 09:32:39,775 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-11-20 09:32:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:39,775 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-20 09:32:39,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-20 09:32:39,776 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-20 09:32:39,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 09:32:39,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:39,777 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:39,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:39,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:39,984 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:39,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:39,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2022-11-20 09:32:39,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:39,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998954696] [2022-11-20 09:32:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:39,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:40,009 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:40,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329058884] [2022-11-20 09:32:40,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:40,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:40,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:40,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:40,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:32:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:40,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:32:40,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:40,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:32:40,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:40,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998954696] [2022-11-20 09:32:40,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:40,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329058884] [2022-11-20 09:32:40,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329058884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:32:40,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:32:40,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:32:40,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117445974] [2022-11-20 09:32:40,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:32:40,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:32:40,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:40,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:32:40,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:32:40,193 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-20 09:32:40,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:40,306 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-11-20 09:32:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:32:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2022-11-20 09:32:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:40,308 INFO L225 Difference]: With dead ends: 41 [2022-11-20 09:32:40,309 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 09:32:40,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:32:40,318 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:40,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 27 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:32:40,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 09:32:40,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2022-11-20 09:32:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-11-20 09:32:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-20 09:32:40,324 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2022-11-20 09:32:40,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:40,325 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-20 09:32:40,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-20 09:32:40,325 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-20 09:32:40,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 09:32:40,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:40,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:40,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 09:32:40,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:40,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:40,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2022-11-20 09:32:40,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:40,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770451159] [2022-11-20 09:32:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:40,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:40,587 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:40,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052801264] [2022-11-20 09:32:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:40,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:40,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:40,595 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:40,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:32:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:40,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 09:32:40,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:40,743 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:32:40,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:40,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-20 09:32:40,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:32:40,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:32:40,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 treesize of output 20 [2022-11-20 09:32:40,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:40,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:41,184 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_159 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_159) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2022-11-20 09:32:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-20 09:32:41,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:41,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770451159] [2022-11-20 09:32:41,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:41,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052801264] [2022-11-20 09:32:41,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052801264] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:41,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:41,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-20 09:32:41,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710087978] [2022-11-20 09:32:41,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:41,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:32:41,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:41,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:32:41,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=67, Unknown=1, NotChecked=16, Total=110 [2022-11-20 09:32:41,212 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2022-11-20 09:32:41,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:41,514 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-11-20 09:32:41,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:32:41,515 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) Word has length 16 [2022-11-20 09:32:41,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:41,516 INFO L225 Difference]: With dead ends: 40 [2022-11-20 09:32:41,516 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 09:32:41,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=153, Unknown=1, NotChecked=26, Total=240 [2022-11-20 09:32:41,518 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:41,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 83 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-20 09:32:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 09:32:41,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2022-11-20 09:32:41,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 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) [2022-11-20 09:32:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-20 09:32:41,524 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2022-11-20 09:32:41,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:41,525 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-20 09:32:41,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2022-11-20 09:32:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-20 09:32:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 09:32:41,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:41,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:41,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 09:32:41,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 09:32:41,734 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:41,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:41,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1267903976, now seen corresponding path program 2 times [2022-11-20 09:32:41,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:41,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445071183] [2022-11-20 09:32:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:41,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:41,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:41,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121829763] [2022-11-20 09:32:41,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:32:41,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:41,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:41,775 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:41,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:32:41,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:32:41,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:41,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:32:41,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:41,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:42,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:42,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445071183] [2022-11-20 09:32:42,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:42,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121829763] [2022-11-20 09:32:42,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121829763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:42,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:42,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-20 09:32:42,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965487183] [2022-11-20 09:32:42,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:42,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:32:42,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:42,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:32:42,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:32:42,037 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-11-20 09:32:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:42,235 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2022-11-20 09:32:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:32:42,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 [2022-11-20 09:32:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:42,237 INFO L225 Difference]: With dead ends: 61 [2022-11-20 09:32:42,237 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 09:32:42,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:32:42,238 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 52 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:42,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 34 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:32:42,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 09:32:42,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2022-11-20 09:32:42,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 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) [2022-11-20 09:32:42,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-20 09:32:42,251 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2022-11-20 09:32:42,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:42,251 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-20 09:32:42,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-11-20 09:32:42,252 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-11-20 09:32:42,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 09:32:42,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:42,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:42,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:42,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 09:32:42,454 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:42,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:42,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 3 times [2022-11-20 09:32:42,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:42,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27099682] [2022-11-20 09:32:42,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:42,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:42,505 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:42,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522543234] [2022-11-20 09:32:42,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:32:42,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:42,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:42,524 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:42,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:32:42,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 09:32:42,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:42,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:32:42,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:42,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:42,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:42,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27099682] [2022-11-20 09:32:42,788 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:42,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522543234] [2022-11-20 09:32:42,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522543234] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:42,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:42,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-20 09:32:42,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852018702] [2022-11-20 09:32:42,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:42,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:32:42,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:32:42,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:32:42,791 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-11-20 09:32:43,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:43,004 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2022-11-20 09:32:43,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:32:43,004 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 [2022-11-20 09:32:43,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:43,005 INFO L225 Difference]: With dead ends: 56 [2022-11-20 09:32:43,005 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 09:32:43,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:32:43,006 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 54 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:43,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 61 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:32:43,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 09:32:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2022-11-20 09:32:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 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) [2022-11-20 09:32:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-20 09:32:43,013 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2022-11-20 09:32:43,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:43,013 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-20 09:32:43,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-11-20 09:32:43,014 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-20 09:32:43,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 09:32:43,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:43,015 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:43,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:43,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:43,222 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:43,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:43,223 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2022-11-20 09:32:43,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:43,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411254416] [2022-11-20 09:32:43,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:43,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:43,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:43,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956097291] [2022-11-20 09:32:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:43,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:43,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:43,283 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:43,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:32:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:32:43,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 09:32:43,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:43,474 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:32:43,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:43,487 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:32:43,492 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-20 09:32:43,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:32:43,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:32:43,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:43,547 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:32:43,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:43,635 INFO L350 Elim1Store]: Elim1 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 39 treesize of output 33 [2022-11-20 09:32:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:43,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:44,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:44,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411254416] [2022-11-20 09:32:44,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:44,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956097291] [2022-11-20 09:32:44,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956097291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:44,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:44,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-11-20 09:32:44,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080230778] [2022-11-20 09:32:44,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:44,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:32:44,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:44,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:32:44,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:32:44,735 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 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) [2022-11-20 09:32:45,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:45,391 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2022-11-20 09:32:45,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:32:45,392 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 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 20 [2022-11-20 09:32:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:45,393 INFO L225 Difference]: With dead ends: 51 [2022-11-20 09:32:45,393 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 09:32:45,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2022-11-20 09:32:45,394 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:45,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 109 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 72 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2022-11-20 09:32:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 09:32:45,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2022-11-20 09:32:45,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 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) [2022-11-20 09:32:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-11-20 09:32:45,402 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2022-11-20 09:32:45,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:45,403 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-11-20 09:32:45,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 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) [2022-11-20 09:32:45,403 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-11-20 09:32:45,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 09:32:45,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:45,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:45,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:45,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:45,611 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:45,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 4 times [2022-11-20 09:32:45,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:45,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877942076] [2022-11-20 09:32:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:45,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:45,662 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:45,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392354461] [2022-11-20 09:32:45,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:32:45,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:45,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:45,673 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:45,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:32:45,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:32:45,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:45,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 09:32:45,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:45,967 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 09:32:45,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 09:32:45,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:32:45,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:32:46,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:32:46,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 5 [2022-11-20 09:32:46,066 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-20 09:32:46,077 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:32:46,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:46,148 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 19 treesize of output 19 [2022-11-20 09:32:46,157 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-20 09:32:46,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:32:46,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 50 [2022-11-20 09:32:46,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:46,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:46,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:32:46,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:46,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 09:32:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:46,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:32:46,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:46,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877942076] [2022-11-20 09:32:46,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:46,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392354461] [2022-11-20 09:32:46,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392354461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:46,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:46,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2022-11-20 09:32:46,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731585373] [2022-11-20 09:32:46,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:46,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:32:46,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:46,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:32:46,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=196, Unknown=3, NotChecked=0, Total=272 [2022-11-20 09:32:46,966 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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) [2022-11-20 09:32:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:47,476 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2022-11-20 09:32:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 09:32:47,477 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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 20 [2022-11-20 09:32:47,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:47,477 INFO L225 Difference]: With dead ends: 72 [2022-11-20 09:32:47,478 INFO L226 Difference]: Without dead ends: 70 [2022-11-20 09:32:47,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=200, Invalid=666, Unknown=4, NotChecked=0, Total=870 [2022-11-20 09:32:47,479 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 124 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:47,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 69 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 81 Invalid, 0 Unknown, 87 Unchecked, 0.2s Time] [2022-11-20 09:32:47,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-20 09:32:47,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 39. [2022-11-20 09:32:47,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:32:47,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-11-20 09:32:47,489 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 20 [2022-11-20 09:32:47,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:47,489 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-11-20 09:32:47,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 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) [2022-11-20 09:32:47,489 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-11-20 09:32:47,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 09:32:47,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:47,490 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:47,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:47,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 09:32:47,697 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1197174726, now seen corresponding path program 2 times [2022-11-20 09:32:47,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:47,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456817812] [2022-11-20 09:32:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:47,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:47,731 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:47,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34087413] [2022-11-20 09:32:47,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:32:47,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:47,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:47,740 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:47,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:32:47,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:32:47,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:47,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:32:47,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:32:47,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:32:48,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:48,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456817812] [2022-11-20 09:32:48,016 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:48,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34087413] [2022-11-20 09:32:48,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34087413] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:48,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:48,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-20 09:32:48,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061827209] [2022-11-20 09:32:48,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:48,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:32:48,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:48,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:32:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:32:48,019 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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) [2022-11-20 09:32:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:48,184 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2022-11-20 09:32:48,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:32:48,185 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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 [2022-11-20 09:32:48,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:48,185 INFO L225 Difference]: With dead ends: 63 [2022-11-20 09:32:48,185 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 09:32:48,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:32:48,186 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 42 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:48,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 53 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:32:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 09:32:48,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2022-11-20 09:32:48,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 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) [2022-11-20 09:32:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-20 09:32:48,196 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2022-11-20 09:32:48,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:48,197 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-20 09:32:48,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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) [2022-11-20 09:32:48,197 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-20 09:32:48,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 09:32:48,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:48,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:48,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:48,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 09:32:48,405 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:48,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:48,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 3 times [2022-11-20 09:32:48,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:48,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063515691] [2022-11-20 09:32:48,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:48,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:48,429 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:48,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441154270] [2022-11-20 09:32:48,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:32:48,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:48,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:48,432 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:48,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:32:48,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 09:32:48,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:32:48,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 09:32:48,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:32:48,807 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 09:32:48,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 09:32:48,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 09:32:48,850 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-20 09:32:48,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 68 [2022-11-20 09:32:48,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:32:48,889 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 24 treesize of output 17 [2022-11-20 09:32:48,897 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-20 09:32:48,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 75 [2022-11-20 09:32:48,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:32:48,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 19 treesize of output 3 [2022-11-20 09:32:49,028 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-20 09:32:49,050 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:32:49,125 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 117 treesize of output 109 [2022-11-20 09:32:49,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:32:49,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-20 09:32:49,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 93 [2022-11-20 09:32:49,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,345 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 44 [2022-11-20 09:32:49,529 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 148 treesize of output 134 [2022-11-20 09:32:49,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:32:49,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 196 [2022-11-20 09:32:49,603 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 09:32:49,787 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:32:49,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 79 [2022-11-20 09:32:49,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:32:49,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 124 [2022-11-20 09:32:50,191 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-20 09:32:50,192 INFO L350 Elim1Store]: Elim1 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 64 treesize of output 36 [2022-11-20 09:32:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:50,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:32:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:32:54,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:32:54,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063515691] [2022-11-20 09:32:54,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:32:54,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441154270] [2022-11-20 09:32:54,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441154270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:32:54,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:32:54,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2022-11-20 09:32:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381492347] [2022-11-20 09:32:54,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:32:54,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 09:32:54,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:32:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 09:32:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-11-20 09:32:54,841 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) [2022-11-20 09:32:55,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:32:55,968 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2022-11-20 09:32:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 09:32:55,968 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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 [2022-11-20 09:32:55,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:32:55,969 INFO L225 Difference]: With dead ends: 63 [2022-11-20 09:32:55,969 INFO L226 Difference]: Without dead ends: 61 [2022-11-20 09:32:55,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 09:32:55,971 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:32:55,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 70 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 48 Invalid, 0 Unknown, 60 Unchecked, 0.1s Time] [2022-11-20 09:32:55,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-20 09:32:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2022-11-20 09:32:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 52 states have internal predecessors, (62), 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) [2022-11-20 09:32:55,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2022-11-20 09:32:55,992 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 24 [2022-11-20 09:32:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:32:55,993 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2022-11-20 09:32:55,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 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) [2022-11-20 09:32:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2022-11-20 09:32:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 09:32:55,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:32:55,997 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:32:56,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 09:32:56,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 09:32:56,207 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:32:56,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:32:56,208 INFO L85 PathProgramCache]: Analyzing trace with hash -900609774, now seen corresponding path program 5 times [2022-11-20 09:32:56,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:32:56,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264529270] [2022-11-20 09:32:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:32:56,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:32:56,237 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:32:56,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119818183] [2022-11-20 09:32:56,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:32:56,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:32:56,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:32:56,244 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:32:56,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 09:33:40,853 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-20 09:33:40,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:40,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:33:40,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:33:40,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:33:41,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:41,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264529270] [2022-11-20 09:33:41,050 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:33:41,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119818183] [2022-11-20 09:33:41,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119818183] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:33:41,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:33:41,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-20 09:33:41,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388629631] [2022-11-20 09:33:41,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:41,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:33:41,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:41,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:33:41,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:33:41,052 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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) [2022-11-20 09:33:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:41,297 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2022-11-20 09:33:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:33:41,298 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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 [2022-11-20 09:33:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:41,299 INFO L225 Difference]: With dead ends: 102 [2022-11-20 09:33:41,299 INFO L226 Difference]: Without dead ends: 84 [2022-11-20 09:33:41,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:33:41,300 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 53 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:41,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 62 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:33:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-20 09:33:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 51. [2022-11-20 09:33:41,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:33:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2022-11-20 09:33:41,313 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 24 [2022-11-20 09:33:41,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:41,313 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2022-11-20 09:33:41,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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) [2022-11-20 09:33:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2022-11-20 09:33:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 09:33:41,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:41,315 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:41,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:41,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:41,525 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:33:41,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:41,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1983767408, now seen corresponding path program 6 times [2022-11-20 09:33:41,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:41,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026466141] [2022-11-20 09:33:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:41,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:41,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:33:41,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207138661] [2022-11-20 09:33:41,572 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 09:33:41,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:41,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:41,573 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:41,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 09:33:42,132 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-20 09:33:42,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:42,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:33:42,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:42,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:33:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:42,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:33:42,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026466141] [2022-11-20 09:33:42,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:33:42,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207138661] [2022-11-20 09:33:42,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207138661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:33:42,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:33:42,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-20 09:33:42,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054336578] [2022-11-20 09:33:42,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:42,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:33:42,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:42,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:33:42,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:33:42,400 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 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) [2022-11-20 09:33:42,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:33:42,923 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2022-11-20 09:33:42,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 09:33:42,924 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 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 26 [2022-11-20 09:33:42,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:33:42,925 INFO L225 Difference]: With dead ends: 124 [2022-11-20 09:33:42,925 INFO L226 Difference]: Without dead ends: 112 [2022-11-20 09:33:42,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=680, Unknown=0, NotChecked=0, Total=930 [2022-11-20 09:33:42,927 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 229 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:33:42,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 102 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:33:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-20 09:33:42,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 66. [2022-11-20 09:33:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 65 states have internal predecessors, (74), 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) [2022-11-20 09:33:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2022-11-20 09:33:42,943 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 26 [2022-11-20 09:33:42,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:33:42,943 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2022-11-20 09:33:42,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 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) [2022-11-20 09:33:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2022-11-20 09:33:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 09:33:42,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:33:42,945 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:33:42,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 09:33:43,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:43,153 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:33:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:33:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 4 times [2022-11-20 09:33:43,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:33:43,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359888916] [2022-11-20 09:33:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:33:43,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:33:43,178 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:33:43,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704865491] [2022-11-20 09:33:43,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:33:43,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:33:43,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:33:43,188 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:33:43,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 09:33:43,652 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:33:43,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:33:43,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-20 09:33:43,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:33:43,675 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:33:43,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:43,684 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:33:43,689 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-20 09:33:43,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:33:43,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:33:43,795 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 117 treesize of output 109 [2022-11-20 09:33:43,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:43,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:43,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:43,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:43,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:43,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-20 09:33:43,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:43,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 47 [2022-11-20 09:33:43,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:43,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:43,984 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 44 [2022-11-20 09:33:44,133 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 179 treesize of output 163 [2022-11-20 09:33:44,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:44,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:44,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:44,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:44,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 199 [2022-11-20 09:33:44,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:44,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:44,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 103 [2022-11-20 09:33:44,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:44,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:44,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:33:44,416 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:44,421 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 09:33:44,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 59 [2022-11-20 09:33:44,916 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-20 09:33:44,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 45 [2022-11-20 09:33:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:44,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:00,699 WARN L233 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 139 DAG size of output: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:34:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:00,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:00,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359888916] [2022-11-20 09:34:00,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:00,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704865491] [2022-11-20 09:34:00,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704865491] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:00,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:00,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2022-11-20 09:34:00,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111501986] [2022-11-20 09:34:00,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:00,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 09:34:00,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:00,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 09:34:00,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=501, Unknown=1, NotChecked=0, Total=600 [2022-11-20 09:34:00,730 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 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) [2022-11-20 09:34:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:03,122 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2022-11-20 09:34:03,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 09:34:03,123 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 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 [2022-11-20 09:34:03,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:03,124 INFO L225 Difference]: With dead ends: 83 [2022-11-20 09:34:03,124 INFO L226 Difference]: Without dead ends: 53 [2022-11-20 09:34:03,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=167, Invalid=824, Unknown=1, NotChecked=0, Total=992 [2022-11-20 09:34:03,126 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:03,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 137 Invalid, 0 Unknown, 70 Unchecked, 0.6s Time] [2022-11-20 09:34:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-20 09:34:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-20 09:34:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 52 states have internal predecessors, (59), 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) [2022-11-20 09:34:03,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-11-20 09:34:03,136 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 28 [2022-11-20 09:34:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:03,136 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-11-20 09:34:03,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 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) [2022-11-20 09:34:03,137 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-11-20 09:34:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 09:34:03,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:03,138 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:03,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:03,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 09:34:03,347 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:03,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash 48972360, now seen corresponding path program 5 times [2022-11-20 09:34:03,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:03,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107761281] [2022-11-20 09:34:03,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:03,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:03,378 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:03,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359319924] [2022-11-20 09:34:03,379 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:34:03,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:03,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:03,380 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:03,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 09:36:38,266 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-20 09:36:38,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:36:38,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-20 09:36:38,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:38,303 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:36:38,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,314 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:36:38,320 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-20 09:36:38,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:36:38,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:36:38,390 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-20 09:36:38,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:36:38,410 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 09:36:38,499 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-20 09:36:38,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:36:38,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2022-11-20 09:36:38,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,602 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:36:38,721 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 141 treesize of output 129 [2022-11-20 09:36:38,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:38,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 196 [2022-11-20 09:36:38,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 104 [2022-11-20 09:36:38,927 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 99 treesize of output 91 [2022-11-20 09:36:38,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 157 [2022-11-20 09:36:38,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:38,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 56 [2022-11-20 09:36:39,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:39,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:39,109 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 44 [2022-11-20 09:36:39,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2022-11-20 09:36:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:39,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:56,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:36:56,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107761281] [2022-11-20 09:36:56,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:36:56,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359319924] [2022-11-20 09:36:56,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359319924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:36:56,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:36:56,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 29 [2022-11-20 09:36:56,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176784480] [2022-11-20 09:36:56,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:36:56,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 09:36:56,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:36:56,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 09:36:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=680, Unknown=1, NotChecked=0, Total=812 [2022-11-20 09:36:56,536 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 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) [2022-11-20 09:36:57,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:57,916 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2022-11-20 09:36:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 09:36:57,917 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 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 [2022-11-20 09:36:57,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:57,919 INFO L225 Difference]: With dead ends: 88 [2022-11-20 09:36:57,919 INFO L226 Difference]: Without dead ends: 86 [2022-11-20 09:36:57,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=204, Invalid=1055, Unknown=1, NotChecked=0, Total=1260 [2022-11-20 09:36:57,921 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:57,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 82 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 72 Invalid, 0 Unknown, 117 Unchecked, 0.2s Time] [2022-11-20 09:36:57,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-20 09:36:57,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2022-11-20 09:36:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.144736842105263) internal successors, (87), 76 states have internal predecessors, (87), 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) [2022-11-20 09:36:57,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2022-11-20 09:36:57,942 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 28 [2022-11-20 09:36:57,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:57,942 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2022-11-20 09:36:57,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 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) [2022-11-20 09:36:57,943 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2022-11-20 09:36:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 09:36:57,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:57,943 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:57,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 09:36:58,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 09:36:58,168 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:58,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:58,169 INFO L85 PathProgramCache]: Analyzing trace with hash 778799246, now seen corresponding path program 7 times [2022-11-20 09:36:58,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:36:58,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313236065] [2022-11-20 09:36:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:58,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:36:58,275 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:36:58,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765146514] [2022-11-20 09:36:58,276 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 09:36:58,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:36:58,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:36:58,283 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:36:58,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 09:36:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:59,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-20 09:36:59,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:59,529 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 09:36:59,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 09:36:59,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:36:59,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:36:59,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:59,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 31 treesize of output 5 [2022-11-20 09:36:59,622 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-20 09:36:59,629 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:36:59,637 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (not .cse0) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (let ((.cse1 (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (or (and .cse1 .cse0) (and (exists ((v_DerPreprocessor_15 (Array Int Int)) (v_DerPreprocessor_16 (Array Int Int))) (and (= (select v_DerPreprocessor_16 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~b~0#1.base|)))) .cse1))) (= |c_ULTIMATE.start_main_~i~0#1| 1))) is different from true [2022-11-20 09:36:59,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:59,656 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 19 treesize of output 19 [2022-11-20 09:36:59,660 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-20 09:36:59,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:36:59,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:36:59,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:36:59,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 50 [2022-11-20 09:36:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:59,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:36:59,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:59,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:59,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2022-11-20 09:36:59,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 50 [2022-11-20 09:36:59,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:59,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:59,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:36:59,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:00,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:00,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 20 [2022-11-20 09:37:00,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 50 [2022-11-20 09:37:00,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:00,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:00,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:37:00,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:00,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:00,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2022-11-20 09:37:00,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:00,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-20 09:37:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-20 09:37:00,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:37:01,742 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_678 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2022-11-20 09:37:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 7 not checked. [2022-11-20 09:37:01,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:37:01,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313236065] [2022-11-20 09:37:01,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:37:01,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765146514] [2022-11-20 09:37:01,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765146514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:37:01,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:37:01,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2022-11-20 09:37:01,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488329181] [2022-11-20 09:37:01,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:37:01,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 09:37:01,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:37:01,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 09:37:01,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=408, Unknown=2, NotChecked=90, Total=650 [2022-11-20 09:37:01,776 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 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) [2022-11-20 09:37:01,839 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse0 (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (and .cse0 (not .cse1) (forall ((v_ArrVal_678 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_678) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (or (and .cse0 .cse1) (and (exists ((v_DerPreprocessor_15 (Array Int Int)) (v_DerPreprocessor_16 (Array Int Int))) (and (= (select v_DerPreprocessor_16 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (= (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~b~0#1.base| v_DerPreprocessor_15) |c_ULTIMATE.start_main_~a~0#1.base| v_DerPreprocessor_16) |c_ULTIMATE.start_main_~b~0#1.base|)))) .cse0)) (= |c_ULTIMATE.start_main_~i~0#1| 1))) is different from true [2022-11-20 09:37:02,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:37:02,559 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2022-11-20 09:37:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 09:37:02,559 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 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 28 [2022-11-20 09:37:02,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:37:02,560 INFO L225 Difference]: With dead ends: 116 [2022-11-20 09:37:02,560 INFO L226 Difference]: Without dead ends: 114 [2022-11-20 09:37:02,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=244, Invalid=887, Unknown=3, NotChecked=198, Total=1332 [2022-11-20 09:37:02,562 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 71 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:37:02,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 82 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 130 Invalid, 0 Unknown, 155 Unchecked, 0.3s Time] [2022-11-20 09:37:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-20 09:37:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 85. [2022-11-20 09:37:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 84 states have internal predecessors, (99), 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) [2022-11-20 09:37:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2022-11-20 09:37:02,585 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 28 [2022-11-20 09:37:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:37:02,585 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2022-11-20 09:37:02,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 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) [2022-11-20 09:37:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2022-11-20 09:37:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 09:37:02,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:37:02,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:37:02,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 09:37:02,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 09:37:02,795 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:37:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1146912830, now seen corresponding path program 6 times [2022-11-20 09:37:02,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:02,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267935562] [2022-11-20 09:37:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:02,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:02,818 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:37:02,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376407416] [2022-11-20 09:37:02,819 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 09:37:02,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:37:02,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:02,820 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:37:02,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 09:37:03,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-20 09:37:03,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:37:03,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-20 09:37:03,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:03,565 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 09:37:03,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 09:37:03,600 INFO L321 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2022-11-20 09:37:03,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 67 [2022-11-20 09:37:03,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:37:03,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 16 treesize of output 5 [2022-11-20 09:37:03,685 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-20 09:37:03,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:37:03,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:37:03,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 17 treesize of output 36 [2022-11-20 09:37:03,745 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:37:03,842 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 117 treesize of output 109 [2022-11-20 09:37:03,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:37:03,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:03,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:03,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:03,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-20 09:37:04,085 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 126 treesize of output 116 [2022-11-20 09:37:04,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,104 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:37:04,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 185 [2022-11-20 09:37:04,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 47 [2022-11-20 09:37:04,420 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 161 treesize of output 147 [2022-11-20 09:37:04,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:04,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 216 [2022-11-20 09:37:04,997 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 179 treesize of output 159 [2022-11-20 09:37:05,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:37:05,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 199 [2022-11-20 09:37:05,091 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 09:37:05,491 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:37:05,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 299 treesize of output 269 [2022-11-20 09:37:05,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 243 [2022-11-20 09:37:05,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:05,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 72 [2022-11-20 09:37:06,003 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:37:06,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 203 treesize of output 173 [2022-11-20 09:37:06,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:37:06,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 243 [2022-11-20 09:37:06,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:06,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 127 [2022-11-20 09:37:07,233 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2022-11-20 09:37:07,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 55 [2022-11-20 09:37:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:37:07,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:37:36,665 WARN L233 SmtUtils]: Spent 28.38s on a formula simplification. DAG size of input: 70 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:37:47,011 WARN L233 SmtUtils]: Spent 10.19s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:38:25,059 WARN L233 SmtUtils]: Spent 35.30s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:38:58,258 WARN L233 SmtUtils]: Spent 32.59s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:39:54,517 WARN L233 SmtUtils]: Spent 50.80s on a formula simplification that was a NOOP. DAG size: 170 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:40:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:40:19,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:40:19,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267935562] [2022-11-20 09:40:19,942 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:40:19,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376407416] [2022-11-20 09:40:19,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376407416] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:40:19,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:40:19,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2022-11-20 09:40:19,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709817780] [2022-11-20 09:40:19,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:40:19,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-20 09:40:19,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:40:19,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-20 09:40:19,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1606, Unknown=9, NotChecked=0, Total=1980 [2022-11-20 09:40:19,945 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand has 45 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 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) [2022-11-20 09:41:29,040 WARN L233 SmtUtils]: Spent 46.73s on a formula simplification that was a NOOP. DAG size: 186 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:41:43,648 WARN L233 SmtUtils]: Spent 10.54s on a formula simplification. DAG size of input: 154 DAG size of output: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:41:45,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:41:45,498 INFO L93 Difference]: Finished difference Result 124 states and 142 transitions. [2022-11-20 09:41:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 09:41:45,498 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 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 32 [2022-11-20 09:41:45,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:41:45,499 INFO L225 Difference]: With dead ends: 124 [2022-11-20 09:41:45,499 INFO L226 Difference]: Without dead ends: 122 [2022-11-20 09:41:45,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 275.4s TimeCoverageRelationStatistics Valid=682, Invalid=2962, Unknown=16, NotChecked=0, Total=3660 [2022-11-20 09:41:45,503 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 64 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 299 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:41:45,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 154 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 137 Invalid, 0 Unknown, 299 Unchecked, 0.7s Time] [2022-11-20 09:41:45,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-20 09:41:45,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2022-11-20 09:41:45,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.180952380952381) internal successors, (124), 105 states have internal predecessors, (124), 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) [2022-11-20 09:41:45,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 124 transitions. [2022-11-20 09:41:45,542 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 124 transitions. Word has length 32 [2022-11-20 09:41:45,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:41:45,543 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 124 transitions. [2022-11-20 09:41:45,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 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) [2022-11-20 09:41:45,544 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 124 transitions. [2022-11-20 09:41:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 09:41:45,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:41:45,544 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:41:45,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 09:41:45,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 09:41:45,753 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:41:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:41:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash 917381246, now seen corresponding path program 7 times [2022-11-20 09:41:45,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:41:45,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744312185] [2022-11-20 09:41:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:41:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:41:45,794 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:41:45,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223669759] [2022-11-20 09:41:45,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 09:41:45,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:41:45,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:41:45,798 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:41:45,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 09:41:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:41:45,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 09:41:45,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:41:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 09:41:46,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:41:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 09:41:46,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:41:46,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744312185] [2022-11-20 09:41:46,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:41:46,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223669759] [2022-11-20 09:41:46,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223669759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:41:46,278 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:41:46,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-11-20 09:41:46,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496892748] [2022-11-20 09:41:46,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:41:46,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:41:46,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:41:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:41:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:41:46,282 INFO L87 Difference]: Start difference. First operand 106 states and 124 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 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) [2022-11-20 09:41:47,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:41:47,151 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2022-11-20 09:41:47,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 09:41:47,152 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 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 32 [2022-11-20 09:41:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:41:47,153 INFO L225 Difference]: With dead ends: 159 [2022-11-20 09:41:47,153 INFO L226 Difference]: Without dead ends: 116 [2022-11-20 09:41:47,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 09:41:47,155 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 143 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:41:47,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 142 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:41:47,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-20 09:41:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 59. [2022-11-20 09:41:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 58 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) [2022-11-20 09:41:47,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2022-11-20 09:41:47,174 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 32 [2022-11-20 09:41:47,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:41:47,174 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2022-11-20 09:41:47,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 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) [2022-11-20 09:41:47,174 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2022-11-20 09:41:47,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 09:41:47,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:41:47,175 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:41:47,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 09:41:47,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:41:47,376 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:41:47,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:41:47,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1910230140, now seen corresponding path program 8 times [2022-11-20 09:41:47,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:41:47,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900922941] [2022-11-20 09:41:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:41:47,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:41:47,401 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:41:47,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139458054] [2022-11-20 09:41:47,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:41:47,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:41:47,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:41:47,403 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:41:47,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 09:41:48,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:41:48,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:41:48,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-20 09:41:48,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:41:48,532 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:41:48,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:48,547 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:41:48,552 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-20 09:41:48,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:41:48,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:41:48,621 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-20 09:41:48,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:48,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:48,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:41:48,642 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 09:41:48,765 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-20 09:41:48,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:48,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:48,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:41:48,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:48,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:48,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2022-11-20 09:41:48,890 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-20 09:41:48,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:48,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:48,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:41:48,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:48,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:48,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 24 [2022-11-20 09:41:49,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,034 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:41:49,164 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 141 treesize of output 129 [2022-11-20 09:41:49,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:41:49,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 196 [2022-11-20 09:41:49,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 99 [2022-11-20 09:41:49,440 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 79 treesize of output 71 [2022-11-20 09:41:49,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 123 [2022-11-20 09:41:49,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 36 [2022-11-20 09:41:49,631 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 79 treesize of output 71 [2022-11-20 09:41:49,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 123 [2022-11-20 09:41:49,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:41:49,842 INFO L350 Elim1Store]: Elim1 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 43 treesize of output 44 [2022-11-20 09:41:50,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2022-11-20 09:41:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:41:50,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:42:53,000 WARN L233 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 119 DAG size of output: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:42:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:42:53,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:42:53,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900922941] [2022-11-20 09:42:53,014 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:42:53,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139458054] [2022-11-20 09:42:53,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139458054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:42:53,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:42:53,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21] total 34 [2022-11-20 09:42:53,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623003165] [2022-11-20 09:42:53,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:42:53,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 09:42:53,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:42:53,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 09:42:53,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=940, Unknown=11, NotChecked=0, Total=1122 [2022-11-20 09:42:53,016 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 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) [2022-11-20 09:43:08,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:43:08,896 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2022-11-20 09:43:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 09:43:08,897 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 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 32 [2022-11-20 09:43:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:43:08,898 INFO L225 Difference]: With dead ends: 115 [2022-11-20 09:43:08,898 INFO L226 Difference]: Without dead ends: 113 [2022-11-20 09:43:08,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 77.6s TimeCoverageRelationStatistics Valid=378, Invalid=2159, Unknown=13, NotChecked=0, Total=2550 [2022-11-20 09:43:08,900 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 56 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:43:08,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 120 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 217 Unchecked, 0.2s Time] [2022-11-20 09:43:08,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-20 09:43:08,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 94. [2022-11-20 09:43:08,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 93 states have internal predecessors, (110), 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) [2022-11-20 09:43:08,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 110 transitions. [2022-11-20 09:43:08,933 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 110 transitions. Word has length 32 [2022-11-20 09:43:08,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:43:08,934 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 110 transitions. [2022-11-20 09:43:08,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 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) [2022-11-20 09:43:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 110 transitions. [2022-11-20 09:43:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 09:43:08,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:43:08,935 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:43:08,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 09:43:09,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:43:09,139 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:43:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:43:09,140 INFO L85 PathProgramCache]: Analyzing trace with hash -831401164, now seen corresponding path program 9 times [2022-11-20 09:43:09,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:43:09,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755240738] [2022-11-20 09:43:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:43:09,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:43:09,158 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:43:09,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384619890] [2022-11-20 09:43:09,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:43:09,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:43:09,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:43:09,160 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:43:09,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f4baa2c-34b7-46aa-be0c-018253107776/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 09:43:09,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 09:43:09,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:43:09,749 WARN L261 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-20 09:43:09,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:43:09,813 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 09:43:09,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 09:43:09,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 09:43:09,855 INFO L321 Elim1Store]: treesize reduction 36, result has 28.0 percent of original size [2022-11-20 09:43:09,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 64 [2022-11-20 09:43:09,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-20 09:43:09,885 INFO L350 Elim1Store]: Elim1 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 5 treesize of output 3 [2022-11-20 09:43:09,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 17 treesize of output 36 [2022-11-20 09:43:09,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:43:09,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 09:43:09,965 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:43:10,053 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 117 treesize of output 109 [2022-11-20 09:43:10,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:43:10,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-20 09:43:10,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 42 [2022-11-20 09:43:10,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,266 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 09:43:10,391 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 135 treesize of output 123 [2022-11-20 09:43:10,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,467 INFO L321 Elim1Store]: treesize reduction 131, result has 0.8 percent of original size [2022-11-20 09:43:10,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 197 [2022-11-20 09:43:10,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:10,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 96 [2022-11-20 09:43:12,726 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 329 treesize of output 301 [2022-11-20 09:43:12,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:43:12,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:12,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:12,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:12,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 199 [2022-11-20 09:43:12,752 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 09:43:14,178 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:43:14,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 401 treesize of output 367 [2022-11-20 09:43:14,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:14,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:14,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:14,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:14,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:14,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 242 [2022-11-20 09:43:14,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:14,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:14,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:14,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:14,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 52 [2022-11-20 09:43:15,866 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:43:15,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 373 treesize of output 335 [2022-11-20 09:43:15,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:15,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:15,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:15,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:15,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:15,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:15,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:15,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 279 [2022-11-20 09:43:23,831 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:43:23,832 INFO L350 Elim1Store]: Elim1 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 245 treesize of output 209 [2022-11-20 09:43:23,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:23,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:23,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:23,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:23,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:23,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:23,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:23,863 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:43:23,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:23,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:43:23,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 42 [2022-11-20 09:43:23,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 33 [2022-11-20 09:43:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:43:24,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:43:59,144 WARN L233 SmtUtils]: Spent 16.02s on a formula simplification. DAG size of input: 152 DAG size of output: 134 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:44:27,928 WARN L233 SmtUtils]: Spent 15.17s on a formula simplification that was a NOOP. DAG size: 161 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:44:57,259 WARN L233 SmtUtils]: Spent 15.39s on a formula simplification that was a NOOP. DAG size: 161 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:45:02,260 WARN L859 $PredicateComparison]: unable to prove that (or (< 4 c_~N~0) (not (< 3 c_~N~0)) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (let ((.cse74 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse75 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse71 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse29 (<= .cse75 2147483647)) (.cse73 (* .cse75 8)) (.cse72 (* .cse74 8)) (.cse17 (<= .cse74 2147483647))) (let ((.cse39 (not .cse17)) (.cse38 (+ .cse72 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (+ .cse73 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse27 (+ .cse73 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse28 (not .cse29)) (.cse13 (+ .cse72 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse41 (* 8 .cse71)) (.cse42 (<= .cse71 2147483647))) (and (or (let ((.cse40 (select .cse12 (+ .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse16 (+ .cse40 4)) (.cse14 (+ 2 .cse40))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse10 (let ((.cse11 (store (store .cse12 .cse13 .cse14) .cse15 .cse16))) (store .cse11 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse11 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse10))) (let ((.cse8 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (= .cse0 1)) (= (let ((.cse1 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse4 (store .cse8 .cse9 (+ .cse1 2 .cse0)))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse1 .cse2 .cse0 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse4 .cse5 (+ .cse1 .cse2 4 .cse0))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6))))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0))))))) .cse17) (or (let ((.cse26 (store .cse12 .cse38 .cse14))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse24 (let ((.cse25 (store .cse26 .cse27 .cse16))) (store .cse25 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse25 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse24))) (let ((.cse23 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse18 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse22 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse20 (store .cse23 .cse9 (+ .cse18 2 .cse22)))) (let ((.cse21 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse20 .cse5 (+ .cse18 .cse21 .cse22 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse21 .cse22)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse18 1)))))))) .cse28) (or .cse29 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse36 (let ((.cse37 (store .cse26 .cse15 .cse16))) (store .cse37 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse37 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse36))) (let ((.cse35 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse30 (select .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse34 (select .cse36 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse32 (store .cse35 .cse9 (+ .cse30 2 .cse34)))) (let ((.cse33 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse30 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse32 .cse5 (+ .cse30 4 .cse33 .cse34))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse33 .cse34)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse30 1))))))))))) .cse39)))) (not .cse42)) (or (let ((.cse70 (select .cse12 (+ (- 34359738368) .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse52 (+ .cse70 4)) (.cse51 (+ .cse70 2))) (and (or .cse39 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse49 (let ((.cse50 (store (store .cse12 .cse38 .cse51) .cse27 .cse52))) (store .cse50 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse50 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse49))) (let ((.cse48 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse43 (select .cse48 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse43 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= 10 (let ((.cse46 (select .cse49 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse45 (store .cse48 .cse9 (+ .cse43 .cse46 2)))) (let ((.cse47 (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse45) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse45 .cse5 (+ .cse43 .cse46 .cse47 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse43 .cse46 .cse47)))))))))))) (or (let ((.cse61 (store .cse12 .cse13 .cse51))) (and (or .cse29 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse59 (let ((.cse60 (store .cse61 .cse15 .cse52))) (store .cse60 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse60 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse55 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse59))) (let ((.cse58 (select .cse55 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse57 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse53 (select .cse59 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse56 (store .cse58 .cse9 (+ .cse53 2 .cse57)))) (let ((.cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~a~0#1.base| .cse56) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse53 .cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse56 .cse5 (+ .cse53 .cse54 4 .cse57))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse57)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse57 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0)))))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse68 (let ((.cse69 (store .cse61 .cse27 .cse52))) (store .cse69 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse69 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse64 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse68))) (let ((.cse67 (select .cse64 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse62 (select .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse62 1)) (= (let ((.cse63 (select .cse68 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse65 (store .cse67 .cse9 (+ .cse63 2 .cse62)))) (let ((.cse66 (select (select (store .cse64 |c_ULTIMATE.start_main_~a~0#1.base| .cse65) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse63 (select (select (store .cse64 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse65 .cse5 (+ .cse63 .cse66 .cse62 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse66 .cse62)))) 10))))))) .cse28))) .cse17)))) .cse42)))))) is different from true [2022-11-20 09:45:02,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:45:02,291 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:45:02,299 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-20 09:45:02,299 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 2927 treesize of output 1 [2022-11-20 09:45:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-20 09:45:02,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:45:02,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755240738] [2022-11-20 09:45:02,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:45:02,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384619890] [2022-11-20 09:45:02,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384619890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:45:02,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:45:02,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-11-20 09:45:02,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95828773] [2022-11-20 09:45:02,306 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:45:02,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 09:45:02,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:45:02,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 09:45:02,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1797, Unknown=3, NotChecked=90, Total=2256 [2022-11-20 09:45:02,307 INFO L87 Difference]: Start difference. First operand 94 states and 110 transitions. Second operand has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 48 states have internal predecessors, (70), 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) [2022-11-20 09:45:28,372 WARN L233 SmtUtils]: Spent 12.94s on a formula simplification. DAG size of input: 241 DAG size of output: 115 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:45:29,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:45:33,652 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (and (or (< 4 c_~N~0) (not (< 3 c_~N~0)) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (let ((.cse74 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse75 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse71 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse29 (<= .cse75 2147483647)) (.cse73 (* .cse75 8)) (.cse72 (* .cse74 8)) (.cse17 (<= .cse74 2147483647))) (let ((.cse39 (not .cse17)) (.cse38 (+ .cse72 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (+ .cse73 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse27 (+ .cse73 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse28 (not .cse29)) (.cse13 (+ .cse72 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse41 (* 8 .cse71)) (.cse42 (<= .cse71 2147483647))) (and (or (let ((.cse40 (select .cse12 (+ .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse16 (+ .cse40 4)) (.cse14 (+ 2 .cse40))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse10 (let ((.cse11 (store (store .cse12 .cse13 .cse14) .cse15 .cse16))) (store .cse11 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse11 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse10))) (let ((.cse8 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (= .cse0 1)) (= (let ((.cse1 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse4 (store .cse8 .cse9 (+ .cse1 2 .cse0)))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse1 .cse2 .cse0 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse4 .cse5 (+ .cse1 .cse2 4 .cse0))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6))))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0))))))) .cse17) (or (let ((.cse26 (store .cse12 .cse38 .cse14))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse24 (let ((.cse25 (store .cse26 .cse27 .cse16))) (store .cse25 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse25 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse24))) (let ((.cse23 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse18 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse22 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse20 (store .cse23 .cse9 (+ .cse18 2 .cse22)))) (let ((.cse21 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse20 .cse5 (+ .cse18 .cse21 .cse22 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse21 .cse22)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse18 1)))))))) .cse28) (or .cse29 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse36 (let ((.cse37 (store .cse26 .cse15 .cse16))) (store .cse37 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse37 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse36))) (let ((.cse35 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse30 (select .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse34 (select .cse36 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse32 (store .cse35 .cse9 (+ .cse30 2 .cse34)))) (let ((.cse33 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse30 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse32 .cse5 (+ .cse30 4 .cse33 .cse34))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse33 .cse34)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse30 1))))))))))) .cse39)))) (not .cse42)) (or (let ((.cse70 (select .cse12 (+ (- 34359738368) .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse52 (+ .cse70 4)) (.cse51 (+ .cse70 2))) (and (or .cse39 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse49 (let ((.cse50 (store (store .cse12 .cse38 .cse51) .cse27 .cse52))) (store .cse50 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse50 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse49))) (let ((.cse48 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse43 (select .cse48 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse43 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= 10 (let ((.cse46 (select .cse49 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse45 (store .cse48 .cse9 (+ .cse43 .cse46 2)))) (let ((.cse47 (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse45) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse45 .cse5 (+ .cse43 .cse46 .cse47 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse43 .cse46 .cse47)))))))))))) (or (let ((.cse61 (store .cse12 .cse13 .cse51))) (and (or .cse29 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse59 (let ((.cse60 (store .cse61 .cse15 .cse52))) (store .cse60 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse60 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse55 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse59))) (let ((.cse58 (select .cse55 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse57 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse53 (select .cse59 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse56 (store .cse58 .cse9 (+ .cse53 2 .cse57)))) (let ((.cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~a~0#1.base| .cse56) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse53 .cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse56 .cse5 (+ .cse53 .cse54 4 .cse57))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse57)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse57 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0)))))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse68 (let ((.cse69 (store .cse61 .cse27 .cse52))) (store .cse69 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse69 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse64 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse68))) (let ((.cse67 (select .cse64 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse62 (select .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse62 1)) (= (let ((.cse63 (select .cse68 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse65 (store .cse67 .cse9 (+ .cse63 2 .cse62)))) (let ((.cse66 (select (select (store .cse64 |c_ULTIMATE.start_main_~a~0#1.base| .cse65) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse63 (select (select (store .cse64 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse65 .cse5 (+ .cse63 .cse66 .cse62 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse66 .cse62)))) 10))))))) .cse28))) .cse17)))) .cse42)))))) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select .cse12 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= c_~N~0 2147483647) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 1))) is different from true [2022-11-20 09:45:36,223 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse9 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (= (select .cse0 .cse1) 5) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select .cse0 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< 1 c_~N~0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= c_~N~0 2147483647) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (or (< 4 c_~N~0) (let ((.cse47 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse45 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse46 (* .cse47 8)) (.cse26 (<= .cse47 2147483647))) (let ((.cse16 (not .cse26)) (.cse14 (+ .cse46 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse11 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse25 (+ .cse46 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse27 (* 8 .cse45)) (.cse2 (<= .cse45 2147483647))) (and (or (not .cse2) (let ((.cse15 (+ 2 (select .cse0 (+ .cse27 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse12 (let ((.cse13 (store .cse0 .cse14 .cse15))) (store .cse13 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse13 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse12))) (let ((.cse10 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse7 (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (= (let ((.cse6 (select .cse12 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse4 (store .cse10 .cse11 (+ .cse6 .cse7 2)))) (let ((.cse8 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9))) (+ (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse4 .cse5 (+ .cse6 .cse7 4 .cse8))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse1) .cse6 .cse7 .cse8)))) 10) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse7 1)))))))) .cse16) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse23 (let ((.cse24 (store .cse0 .cse25 .cse15))) (store .cse24 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse24 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse20 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse23))) (let ((.cse22 (select .cse20 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse19 (select .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (= 10 (let ((.cse18 (select .cse23 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse21 (store .cse22 .cse11 (+ .cse18 2 .cse19)))) (let ((.cse17 (select (select (store .cse20 |c_ULTIMATE.start_main_~a~0#1.base| .cse21) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9))) (+ .cse17 .cse18 .cse19 (select (select (store .cse20 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse21 .cse5 (+ .cse17 .cse18 .cse19 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse1)))))) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse19 1)))))))) .cse26)))) (or (let ((.cse36 (+ (select .cse0 (+ (- 34359738368) .cse27 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))) (and (or .cse16 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse34 (let ((.cse35 (store .cse0 .cse14 .cse36))) (store .cse35 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse35 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse34))) (let ((.cse33 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse28 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (= .cse28 1)) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= 10 (let ((.cse30 (select .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse32 (store .cse33 .cse11 (+ .cse30 2 .cse28)))) (let ((.cse29 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9))) (+ .cse29 .cse30 .cse28 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse32 .cse5 (+ .cse29 .cse30 .cse28 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse1))))))))))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse43 (let ((.cse44 (store .cse0 .cse25 .cse36))) (store .cse44 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse44 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse40 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse43))) (let ((.cse42 (select .cse40 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse37 (select .cse42 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse37 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= 10 (let ((.cse39 (select .cse43 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse41 (store .cse42 .cse11 (+ .cse39 .cse37 2)))) (let ((.cse38 (select (select (store .cse40 |c_ULTIMATE.start_main_~a~0#1.base| .cse41) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9))) (+ .cse38 .cse39 .cse37 (select (select (store .cse40 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse41 .cse5 (+ .cse38 .cse39 .cse37 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse1)))))))))))) .cse26))) .cse2))))) (not (< 3 c_~N~0))) (= 3 (select .cse0 .cse9)))) is different from true [2022-11-20 09:45:50,765 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse38 (not (< 3 c_~N~0))) (.cse15 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (let ((.cse37 (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) (or (let ((.cse35 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse33 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse32 (* .cse33 8)) (.cse34 (* .cse35 8)) (.cse36 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse1 (<= .cse36 2147483647)) (.cse11 (+ .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse13 (+ .cse34 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ .cse32 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse10 (+ .cse32 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 24)) (.cse4 (+ (* 8 (mod .cse37 4294967296)) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse14 (* 8 .cse36))) (and (let ((.cse0 (let ((.cse6 (select .cse15 (+ .cse14 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse8 (select .cse12 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse14)))) (let ((.cse9 (store .cse12 .cse13 (+ 2 .cse6 .cse8)))) (let ((.cse5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse9) |c_ULTIMATE.start_main_~b~0#1.base|) .cse11))) (let ((.cse3 (store .cse9 .cse10 (+ .cse5 .cse6 4 .cse8)))) (store .cse3 .cse4 (+ .cse5 6 .cse6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse3) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse8)))))))) (or (not (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) (not .cse1) (= 16 (select .cse0 .cse2)))) (or .cse1 (let ((.cse19 (select .cse12 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse14))) (.cse21 (select .cse15 (+ (- 34359738368) .cse14 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse23 (+ .cse19 .cse21 2)) (.cse17 (<= .cse35 2147483647))) (and (let ((.cse16 (let ((.cse22 (store .cse12 .cse13 .cse23))) (let ((.cse20 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~b~0#1.base|) .cse11))) (let ((.cse18 (store .cse22 .cse10 (+ .cse19 .cse20 .cse21 4)))) (store .cse18 .cse4 (+ .cse19 .cse20 .cse21 6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7)))))))) (or (= 16 (select .cse16 .cse2)) (not .cse17) (not (= (select .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (or (let ((.cse28 (store .cse12 (+ .cse34 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) .cse23))) (let ((.cse27 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse28) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse34 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse25 (<= .cse33 2147483647)) (.cse29 (+ .cse19 .cse21 .cse27 4))) (and (let ((.cse24 (let ((.cse26 (store .cse28 .cse10 .cse29))) (store .cse26 .cse4 (+ .cse19 .cse21 6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse26) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse27))))) (or (= (select .cse24 .cse2) 16) (not .cse25) (not (= (select .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (let ((.cse30 (let ((.cse31 (store .cse28 (+ .cse32 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) .cse29))) (store .cse31 .cse4 (+ .cse19 .cse21 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse31) |c_ULTIMATE.start_main_~b~0#1.base|) (+ .cse32 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) 6 .cse27))))) (or .cse25 (not (= (select .cse30 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) (= 16 (select .cse30 .cse2)))))))) .cse17))))))))) .cse38 (not (< .cse37 c_~N~0)) (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0))) (let ((.cse39 (select .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (< 4 c_~N~0) (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0) .cse38 (not (= .cse39 1)) (= (let ((.cse42 (select .cse15 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse40 (store .cse12 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ 2 .cse42 .cse39)))) (let ((.cse41 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse40) |c_ULTIMATE.start_main_~b~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse40 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|) (+ .cse41 4 .cse42 .cse39))) |c_ULTIMATE.start_main_~b~0#1.base|) (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) .cse41 .cse42 .cse39)))) 10))))) is different from false