./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_lcm1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_lcm1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e972d7fe67c03faae458b4aeefde235726c38e34da23998883d4b544999b0f51 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:08:47,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:08:47,622 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:08:47,628 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:08:47,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:08:47,670 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:08:47,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:08:47,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:08:47,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:08:47,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:08:47,678 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:08:47,679 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:08:47,679 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:08:47,681 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:08:47,681 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:08:47,682 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:08:47,682 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:08:47,683 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:08:47,683 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:08:47,683 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:08:47,684 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:08:47,684 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:08:47,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:08:47,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:08:47,686 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:08:47,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:08:47,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:08:47,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:08:47,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:08:47,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:08:47,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:08:47,690 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:08:47,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:08:47,690 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:08:47,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:08:47,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:08:47,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:08:47,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:47,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:08:47,692 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:08:47,692 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:08:47,692 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:08:47,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:08:47,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:08:47,693 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:08:47,694 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:08:47,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:08:47,694 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e972d7fe67c03faae458b4aeefde235726c38e34da23998883d4b544999b0f51 [2023-11-23 21:08:48,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:08:48,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:08:48,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:08:48,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:08:48,118 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:08:48,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/recursified_nla-digbench/recursified_lcm1.c [2023-11-23 21:08:51,391 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:08:51,651 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:08:51,652 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/sv-benchmarks/c/recursified_nla-digbench/recursified_lcm1.c [2023-11-23 21:08:51,662 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/data/a3d290e1b/014af3b0d9c94170a0b2dfa8575b3062/FLAGe7bdf079f [2023-11-23 21:08:51,675 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/data/a3d290e1b/014af3b0d9c94170a0b2dfa8575b3062 [2023-11-23 21:08:51,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:08:51,679 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:08:51,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:51,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:08:51,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:08:51,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:51,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec94cd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51, skipping insertion in model container [2023-11-23 21:08:51,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:51,724 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:08:51,882 WARN L240 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_1db60c4e-c630-4206-90b5-780ef67ac791/sv-benchmarks/c/recursified_nla-digbench/recursified_lcm1.c[1106,1119] [2023-11-23 21:08:51,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:51,932 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:08:51,946 WARN L240 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_1db60c4e-c630-4206-90b5-780ef67ac791/sv-benchmarks/c/recursified_nla-digbench/recursified_lcm1.c[1106,1119] [2023-11-23 21:08:51,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:08:51,996 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:08:51,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51 WrapperNode [2023-11-23 21:08:51,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:08:51,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:51,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:08:51,998 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:08:52,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:52,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:52,039 INFO L138 Inliner]: procedures = 18, calls = 104, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 95 [2023-11-23 21:08:52,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:08:52,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:08:52,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:08:52,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:08:52,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:52,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:52,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:52,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:52,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:52,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:52,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:52,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:52,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:08:52,107 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:08:52,107 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:08:52,107 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:08:52,108 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51" (1/1) ... [2023-11-23 21:08:52,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:08:52,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:52,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:08:52,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:08:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:08:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_35_to_38_0 [2023-11-23 21:08:52,172 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_35_to_38_0 [2023-11-23 21:08:52,172 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_48_to_53_0 [2023-11-23 21:08:52,173 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_48_to_53_0 [2023-11-23 21:08:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:08:52,173 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:08:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:08:52,173 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_40_to_45_0 [2023-11-23 21:08:52,174 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_40_to_45_0 [2023-11-23 21:08:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:08:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:08:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:08:52,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:08:52,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:08:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:08:52,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:08:52,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:08:52,281 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:08:52,284 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:08:52,700 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:08:52,739 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:08:52,740 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 21:08:52,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:52 BoogieIcfgContainer [2023-11-23 21:08:52,742 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:08:52,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:08:52,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:08:52,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:08:52,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:08:51" (1/3) ... [2023-11-23 21:08:52,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0e3bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:52, skipping insertion in model container [2023-11-23 21:08:52,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:08:51" (2/3) ... [2023-11-23 21:08:52,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0e3bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:08:52, skipping insertion in model container [2023-11-23 21:08:52,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:08:52" (3/3) ... [2023-11-23 21:08:52,753 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_lcm1.c [2023-11-23 21:08:52,770 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:08:52,770 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:08:52,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:08:52,829 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4bd41b59, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:08:52,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:08:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 32 states have internal predecessors, (36), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 21:08:52,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:08:52,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:08:52,845 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:08:52,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:08:52,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:08:52,852 INFO L85 PathProgramCache]: Analyzing trace with hash 556824366, now seen corresponding path program 1 times [2023-11-23 21:08:52,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:08:52,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112739284] [2023-11-23 21:08:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:52,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:08:53,066 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:08:53,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933871075] [2023-11-23 21:08:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:08:53,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:08:53,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:08:53,073 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:08:53,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1db60c4e-c630-4206-90b5-780ef67ac791/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:08:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:08:53,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 98 conjunts are in the unsatisfiable core [2023-11-23 21:08:53,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:08:53,631 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-11-23 21:08:53,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 1 [2023-11-23 21:08:53,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:08:53,667 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2023-11-23 21:08:53,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 76 [2023-11-23 21:08:54,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 165 [2023-11-23 21:08:54,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 258 [2023-11-23 21:08:54,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:08:54,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 71 [2023-11-23 21:08:54,855 INFO L378 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 9 treesize of output 7 [2023-11-23 21:08:54,865 INFO L378 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 9 treesize of output 7 [2023-11-23 21:08:54,875 INFO L378 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 12 treesize of output 11 [2023-11-23 21:08:54,886 INFO L378 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 9 treesize of output 7 [2023-11-23 21:08:54,896 INFO L378 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 26 treesize of output 20 [2023-11-23 21:08:54,908 INFO L378 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 9 treesize of output 7 [2023-11-23 21:08:54,920 INFO L378 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 [2023-11-23 21:08:55,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 27 [2023-11-23 21:08:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:08:55,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:08:59,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:08:59,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112739284] [2023-11-23 21:08:59,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:08:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933871075] [2023-11-23 21:08:59,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933871075] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:08:59,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1304511233] [2023-11-23 21:08:59,222 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-11-23 21:08:59,222 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:08:59,226 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:08:59,232 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:08:59,233 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:09:01,242 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-23 21:09:01,246 INFO L197 IcfgInterpreter]: Interpreting procedure func_to_recursive_line_35_to_38_0 with input of size 161 for LOIs [2023-11-23 21:09:01,524 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 169 for LOIs [2023-11-23 21:09:01,767 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:09:35,101 WARN L854 $PredicateComparison]: unable to prove that (and (<= 1 |c_#StackHeapBarrier|) (exists ((v_func_to_recursive_line_35_to_38_0_~u.base_BEFORE_CALL_1 Int) (v_func_to_recursive_line_35_to_38_0_~a.base_BEFORE_CALL_1 Int) (v_func_to_recursive_line_35_to_38_0_~b.base_BEFORE_CALL_1 Int) (v_func_to_recursive_line_35_to_38_0_~v.base_BEFORE_CALL_1 Int) (|v_#length_13| (Array Int Int)) (v_func_to_recursive_line_35_to_38_0_~y.base_BEFORE_CALL_1 Int) (|v_#memory_int_46| (Array Int (Array Int Int))) (|v_#memory_int_47| (Array Int (Array Int Int))) (v_func_to_recursive_line_35_to_38_0_~x.base_BEFORE_CALL_1 Int) (|v_ULTIMATE.start_main_#t~nondet36#1_7| Int) (|v_#valid_25| (Array Int Int))) (let ((.cse0 (store |v_#valid_25| v_func_to_recursive_line_35_to_38_0_~a.base_BEFORE_CALL_1 1))) (let ((.cse3 (store .cse0 v_func_to_recursive_line_35_to_38_0_~b.base_BEFORE_CALL_1 1))) (let ((.cse9 (store .cse3 v_func_to_recursive_line_35_to_38_0_~x.base_BEFORE_CALL_1 1))) (let ((.cse15 (store .cse9 v_func_to_recursive_line_35_to_38_0_~y.base_BEFORE_CALL_1 1)) (.cse13 (select (select |v_#memory_int_47| v_func_to_recursive_line_35_to_38_0_~a.base_BEFORE_CALL_1) 0)) (.cse7 (select (select |v_#memory_int_47| v_func_to_recursive_line_35_to_38_0_~b.base_BEFORE_CALL_1) 0))) (let ((.cse4 (mod .cse7 4294967296)) (.cse8 (mod .cse13 4294967296)) (.cse1 (select |v_#memory_int_46| 2)) (.cse14 (store .cse15 v_func_to_recursive_line_35_to_38_0_~u.base_BEFORE_CALL_1 1)) (.cse5 (+ |c_#StackHeapBarrier| 1)) (.cse2 (select |v_#memory_int_46| 1))) (and (= (select .cse0 v_func_to_recursive_line_35_to_38_0_~b.base_BEFORE_CALL_1) 0) (<= 2 v_func_to_recursive_line_35_to_38_0_~b.base_BEFORE_CALL_1) (= 108 (select .cse1 0)) (= 49 (select .cse1 3)) (= (select |v_#length_13| 3) 12) (= (select |v_#valid_25| 2) 1) (= (select |v_#valid_25| 1) 1) (= 48 (select .cse2 0)) (= (select |v_#valid_25| v_func_to_recursive_line_35_to_38_0_~a.base_BEFORE_CALL_1) 0) (= (select .cse1 1) 99) (= (select .cse3 v_func_to_recursive_line_35_to_38_0_~x.base_BEFORE_CALL_1) 0) (= (select |v_#valid_25| 0) 0) (<= 2 v_func_to_recursive_line_35_to_38_0_~a.base_BEFORE_CALL_1) (<= 2 v_func_to_recursive_line_35_to_38_0_~y.base_BEFORE_CALL_1) (= 109 (select .cse1 2)) (= (select .cse1 5) 99) (= 7 (select |v_#length_13| 2)) (<= .cse4 65535) (<= .cse5 v_func_to_recursive_line_35_to_38_0_~a.base_BEFORE_CALL_1) (<= .cse5 v_func_to_recursive_line_35_to_38_0_~u.base_BEFORE_CALL_1) (<= .cse5 v_func_to_recursive_line_35_to_38_0_~b.base_BEFORE_CALL_1) (= |v_#memory_int_47| (let ((.cse6 (store |v_#memory_int_46| v_func_to_recursive_line_35_to_38_0_~a.base_BEFORE_CALL_1 (store (select |v_#memory_int_46| v_func_to_recursive_line_35_to_38_0_~a.base_BEFORE_CALL_1) 0 |v_ULTIMATE.start_main_#t~nondet36#1_7|)))) (store .cse6 v_func_to_recursive_line_35_to_38_0_~b.base_BEFORE_CALL_1 (store (select .cse6 v_func_to_recursive_line_35_to_38_0_~b.base_BEFORE_CALL_1) 0 .cse7)))) (= (select .cse1 4) 46) (<= 1 .cse8) (<= .cse5 v_func_to_recursive_line_35_to_38_0_~x.base_BEFORE_CALL_1) (= (select .cse9 v_func_to_recursive_line_35_to_38_0_~y.base_BEFORE_CALL_1) 0) (<= 1 .cse4) (= 2 (select |v_#length_13| 1)) (<= 2 v_func_to_recursive_line_35_to_38_0_~x.base_BEFORE_CALL_1) (= |c_#memory_int| (let ((.cse10 (let ((.cse11 (let ((.cse12 (store |v_#memory_int_47| v_func_to_recursive_line_35_to_38_0_~x.base_BEFORE_CALL_1 (store (select |v_#memory_int_47| v_func_to_recursive_line_35_to_38_0_~x.base_BEFORE_CALL_1) 0 .cse13)))) (store .cse12 v_func_to_recursive_line_35_to_38_0_~y.base_BEFORE_CALL_1 (store (select .cse12 v_func_to_recursive_line_35_to_38_0_~y.base_BEFORE_CALL_1) 0 (select (select .cse12 v_func_to_recursive_line_35_to_38_0_~b.base_BEFORE_CALL_1) 0)))))) (store .cse11 v_func_to_recursive_line_35_to_38_0_~u.base_BEFORE_CALL_1 (store (select .cse11 v_func_to_recursive_line_35_to_38_0_~u.base_BEFORE_CALL_1) 0 (select (select .cse11 v_func_to_recursive_line_35_to_38_0_~b.base_BEFORE_CALL_1) 0)))))) (store .cse10 v_func_to_recursive_line_35_to_38_0_~v.base_BEFORE_CALL_1 (store (select .cse10 v_func_to_recursive_line_35_to_38_0_~v.base_BEFORE_CALL_1) 0 0)))) (= |c_#valid| (store .cse14 v_func_to_recursive_line_35_to_38_0_~v.base_BEFORE_CALL_1 1)) (= (select |v_#valid_25| 3) 1) (<= .cse8 65535) (= (select .cse1 6) 0) (= (select .cse14 v_func_to_recursive_line_35_to_38_0_~v.base_BEFORE_CALL_1) 0) (<= .cse5 v_func_to_recursive_line_35_to_38_0_~y.base_BEFORE_CALL_1) (<= .cse5 v_func_to_recursive_line_35_to_38_0_~v.base_BEFORE_CALL_1) (<= 2 v_func_to_recursive_line_35_to_38_0_~u.base_BEFORE_CALL_1) (<= 2 v_func_to_recursive_line_35_to_38_0_~v.base_BEFORE_CALL_1) (= (select .cse15 v_func_to_recursive_line_35_to_38_0_~u.base_BEFORE_CALL_1) 0) (= |c_#length| (store (store (store (store (store (store |v_#length_13| v_func_to_recursive_line_35_to_38_0_~a.base_BEFORE_CALL_1 4) v_func_to_recursive_line_35_to_38_0_~b.base_BEFORE_CALL_1 4) v_func_to_recursive_line_35_to_38_0_~x.base_BEFORE_CALL_1 4) v_func_to_recursive_line_35_to_38_0_~y.base_BEFORE_CALL_1 4) v_func_to_recursive_line_35_to_38_0_~u.base_BEFORE_CALL_1 4) v_func_to_recursive_line_35_to_38_0_~v.base_BEFORE_CALL_1 4)) (let ((.cse16 (= (mod (+ (* (select (select |c_#memory_int| v_func_to_recursive_line_35_to_38_0_~x.base_BEFORE_CALL_1) 0) (select (select |c_#memory_int| v_func_to_recursive_line_35_to_38_0_~u.base_BEFORE_CALL_1) 0)) (* (select (select |c_#memory_int| v_func_to_recursive_line_35_to_38_0_~y.base_BEFORE_CALL_1) 0) (select (select |c_#memory_int| v_func_to_recursive_line_35_to_38_0_~v.base_BEFORE_CALL_1) 0))) 4294967296) (mod (* (select (select |c_#memory_int| v_func_to_recursive_line_35_to_38_0_~a.base_BEFORE_CALL_1) 0) (select (select |c_#memory_int| v_func_to_recursive_line_35_to_38_0_~b.base_BEFORE_CALL_1) 0)) 4294967296)))) (or (and .cse16 (= |c___VERIFIER_assert_#in~cond| 1)) (and (= |c___VERIFIER_assert_#in~cond| 0) (not .cse16)))) (= (select .cse2 1) 0))))))))) is different from false [2023-11-23 21:09:51,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1304511233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:09:51,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:09:51,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [13] total 29 [2023-11-23 21:09:51,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519097758] [2023-11-23 21:09:51,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:09:51,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 21:09:51,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:09:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 21:09:51,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1014, Unknown=14, NotChecked=66, Total=1260 [2023-11-23 21:09:51,992 INFO L87 Difference]: Start difference. First operand has 50 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 32 states have internal predecessors, (36), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 18 states, 11 states have (on average 1.0) internal successors, (11), 10 states have internal predecessors, (11), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:09:54,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]