./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0235-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:51:28,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:51:28,098 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 18:51:28,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:51:28,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:51:28,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:51:28,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:51:28,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:51:28,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:51:28,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:51:28,127 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:51:28,127 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:51:28,128 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:51:28,128 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:51:28,129 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:51:28,129 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:51:28,130 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:51:28,130 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:51:28,130 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:51:28,131 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:51:28,131 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:51:28,133 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:51:28,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 18:51:28,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 18:51:28,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:51:28,135 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:51:28,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:51:28,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:51:28,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:51:28,136 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 18:51:28,137 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 18:51:28,137 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 18:51:28,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:51:28,138 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 18:51:28,138 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:51:28,138 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:51:28,138 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:51:28,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:51:28,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:51:28,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:51:28,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:51:28,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:51:28,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:51:28,140 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:51:28,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:51:28,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:51:28,140 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:51:28,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:51:28,140 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_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2023-12-02 18:51:28,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:51:28,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:51:28,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:51:28,385 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:51:28,385 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:51:28,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/memsafety/test-0235-1.i [2023-12-02 18:51:31,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:51:31,344 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:51:31,344 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/sv-benchmarks/c/memsafety/test-0235-1.i [2023-12-02 18:51:31,358 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/data/38402365c/4023b74226cb40b5a558cb1d0921e2bd/FLAG0b46b603f [2023-12-02 18:51:31,371 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/data/38402365c/4023b74226cb40b5a558cb1d0921e2bd [2023-12-02 18:51:31,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:51:31,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:51:31,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:51:31,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:51:31,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:51:31,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596d234a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31, skipping insertion in model container [2023-12-02 18:51:31,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,429 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:51:31,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:51:31,744 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:51:31,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:51:31,833 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:51:31,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31 WrapperNode [2023-12-02 18:51:31,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:51:31,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:51:31,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:51:31,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:51:31,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,884 INFO L138 Inliner]: procedures = 188, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 243 [2023-12-02 18:51:31,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:51:31,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:51:31,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:51:31,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:51:31,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,923 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:51:31,930 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:51:31,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:51:31,930 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:51:31,931 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31" (1/1) ... [2023-12-02 18:51:31,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:51:31,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:31,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:51:31,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:51:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:51:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:51:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:51:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:51:31,998 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2023-12-02 18:51:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2023-12-02 18:51:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:51:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 18:51:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2023-12-02 18:51:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2023-12-02 18:51:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:51:31,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:51:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:51:32,136 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:51:32,138 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:51:32,601 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:51:32,664 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:51:32,664 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-12-02 18:51:32,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:51:32 BoogieIcfgContainer [2023-12-02 18:51:32,666 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:51:32,668 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:51:32,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:51:32,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:51:32,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:51:31" (1/3) ... [2023-12-02 18:51:32,671 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed97408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:51:32, skipping insertion in model container [2023-12-02 18:51:32,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:51:31" (2/3) ... [2023-12-02 18:51:32,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed97408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:51:32, skipping insertion in model container [2023-12-02 18:51:32,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:51:32" (3/3) ... [2023-12-02 18:51:32,673 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2023-12-02 18:51:32,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:51:32,687 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2023-12-02 18:51:32,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:51:32,735 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@30a85c60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:51:32,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2023-12-02 18:51:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 102 states have (on average 2.1372549019607843) internal successors, (218), 187 states have internal predecessors, (218), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:51:32,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 18:51:32,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:32,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 18:51:32,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:51:32,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash 455384, now seen corresponding path program 1 times [2023-12-02 18:51:32,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:32,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259003063] [2023-12-02 18:51:32,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:32,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:51:32,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:32,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259003063] [2023-12-02 18:51:32,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259003063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:51:32,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:51:32,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:51:32,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754651134] [2023-12-02 18:51:32,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:51:32,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:51:32,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:32,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:51:32,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:51:32,892 INFO L87 Difference]: Start difference. First operand has 201 states, 102 states have (on average 2.1372549019607843) internal successors, (218), 187 states have internal predecessors, (218), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-12-02 18:51:32,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:51:32,967 INFO L93 Difference]: Finished difference Result 201 states and 230 transitions. [2023-12-02 18:51:32,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:51:32,970 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-12-02 18:51:32,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:51:32,979 INFO L225 Difference]: With dead ends: 201 [2023-12-02 18:51:32,979 INFO L226 Difference]: Without dead ends: 200 [2023-12-02 18:51:32,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:51:32,984 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:51:32,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 18:51:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-12-02 18:51:33,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2023-12-02 18:51:33,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 102 states have (on average 2.0294117647058822) internal successors, (207), 186 states have internal predecessors, (207), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:51:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 229 transitions. [2023-12-02 18:51:33,031 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 229 transitions. Word has length 3 [2023-12-02 18:51:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:51:33,031 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 229 transitions. [2023-12-02 18:51:33,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-12-02 18:51:33,032 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 229 transitions. [2023-12-02 18:51:33,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 18:51:33,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:33,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 18:51:33,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:51:33,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:51:33,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:33,033 INFO L85 PathProgramCache]: Analyzing trace with hash 433713607, now seen corresponding path program 1 times [2023-12-02 18:51:33,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:33,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9058042] [2023-12-02 18:51:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:33,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:33,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:51:33,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864971852] [2023-12-02 18:51:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:33,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:33,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:33,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:33,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:51:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:33,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:51:33,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:33,215 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 6 treesize of output 5 [2023-12-02 18:51:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:51:33,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:51:33,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:33,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9058042] [2023-12-02 18:51:33,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:51:33,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864971852] [2023-12-02 18:51:33,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864971852] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:51:33,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:51:33,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:51:33,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83784185] [2023-12-02 18:51:33,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:51:33,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:51:33,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:33,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:51:33,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:51:33,228 INFO L87 Difference]: Start difference. First operand 200 states and 229 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:51:33,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:51:33,372 INFO L93 Difference]: Finished difference Result 199 states and 228 transitions. [2023-12-02 18:51:33,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:51:33,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-12-02 18:51:33,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:51:33,375 INFO L225 Difference]: With dead ends: 199 [2023-12-02 18:51:33,375 INFO L226 Difference]: Without dead ends: 199 [2023-12-02 18:51:33,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:51:33,377 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 4 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:51:33,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 345 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:51:33,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-02 18:51:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2023-12-02 18:51:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 102 states have (on average 2.019607843137255) internal successors, (206), 185 states have internal predecessors, (206), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:51:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 228 transitions. [2023-12-02 18:51:33,394 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 228 transitions. Word has length 5 [2023-12-02 18:51:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:51:33,394 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 228 transitions. [2023-12-02 18:51:33,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:51:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 228 transitions. [2023-12-02 18:51:33,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 18:51:33,395 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:33,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 18:51:33,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:51:33,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:33,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:51:33,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:33,600 INFO L85 PathProgramCache]: Analyzing trace with hash 560220350, now seen corresponding path program 1 times [2023-12-02 18:51:33,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:33,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604248721] [2023-12-02 18:51:33,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:33,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:33,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:51:33,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157393996] [2023-12-02 18:51:33,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:33,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:33,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:33,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:33,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:51:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:33,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 18:51:33,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:33,766 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 [2023-12-02 18:51:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:51:33,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:51:33,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:33,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604248721] [2023-12-02 18:51:33,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:51:33,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157393996] [2023-12-02 18:51:33,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157393996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:51:33,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:51:33,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:51:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731901457] [2023-12-02 18:51:33,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:51:33,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:51:33,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:51:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:51:33,794 INFO L87 Difference]: Start difference. First operand 199 states and 228 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:51:33,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:51:33,990 INFO L93 Difference]: Finished difference Result 204 states and 233 transitions. [2023-12-02 18:51:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:51:33,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 18:51:33,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:51:33,992 INFO L225 Difference]: With dead ends: 204 [2023-12-02 18:51:33,992 INFO L226 Difference]: Without dead ends: 204 [2023-12-02 18:51:33,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:51:33,994 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 7 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:51:33,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 541 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:51:33,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-02 18:51:34,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2023-12-02 18:51:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 106 states have (on average 1.990566037735849) internal successors, (211), 189 states have internal predecessors, (211), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:51:34,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2023-12-02 18:51:34,011 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 6 [2023-12-02 18:51:34,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:51:34,011 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2023-12-02 18:51:34,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:51:34,012 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2023-12-02 18:51:34,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 18:51:34,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:34,013 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:51:34,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 18:51:34,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:34,214 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:51:34,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:34,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1888502747, now seen corresponding path program 1 times [2023-12-02 18:51:34,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:34,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593872694] [2023-12-02 18:51:34,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:34,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:34,244 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:51:34,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168306023] [2023-12-02 18:51:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:34,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:34,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:34,246 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:34,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:51:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:34,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 18:51:34,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:34,504 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 1 [2023-12-02 18:51:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 18:51:34,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:51:34,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:34,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593872694] [2023-12-02 18:51:34,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:51:34,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168306023] [2023-12-02 18:51:34,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168306023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:51:34,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:51:34,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:51:34,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146674419] [2023-12-02 18:51:34,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:51:34,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:51:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:34,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:51:34,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:51:34,523 INFO L87 Difference]: Start difference. First operand 204 states and 233 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 18:51:34,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:51:34,679 INFO L93 Difference]: Finished difference Result 203 states and 232 transitions. [2023-12-02 18:51:34,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:51:34,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 45 [2023-12-02 18:51:34,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:51:34,681 INFO L225 Difference]: With dead ends: 203 [2023-12-02 18:51:34,681 INFO L226 Difference]: Without dead ends: 203 [2023-12-02 18:51:34,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:51:34,683 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 7 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:51:34,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 555 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:51:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-12-02 18:51:34,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2023-12-02 18:51:34,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 106 states have (on average 1.9811320754716981) internal successors, (210), 188 states have internal predecessors, (210), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:51:34,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 232 transitions. [2023-12-02 18:51:34,694 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 232 transitions. Word has length 45 [2023-12-02 18:51:34,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:51:34,694 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 232 transitions. [2023-12-02 18:51:34,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-02 18:51:34,695 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 232 transitions. [2023-12-02 18:51:34,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-02 18:51:34,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:34,696 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:51:34,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 18:51:34,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:34,903 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:51:34,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash -608239768, now seen corresponding path program 1 times [2023-12-02 18:51:34,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:34,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121101640] [2023-12-02 18:51:34,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:34,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:34,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:51:34,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492028939] [2023-12-02 18:51:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:34,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:34,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:34,933 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:34,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:51:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:35,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 18:51:35,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:35,208 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2023-12-02 18:51:35,232 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 18:51:35,232 INFO L378 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 1 case distinctions, treesize of input 12 treesize of output 14 [2023-12-02 18:51:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 3 not checked. [2023-12-02 18:51:35,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:51:35,448 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-02 18:51:35,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:51:35,465 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-02 18:51:35,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:35,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121101640] [2023-12-02 18:51:35,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:51:35,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492028939] [2023-12-02 18:51:35,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492028939] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:51:35,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [261681049] [2023-12-02 18:51:35,486 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-12-02 18:51:35,486 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:51:35,490 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:51:35,495 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:51:35,496 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:51:35,759 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 57 for LOIs [2023-12-02 18:51:35,874 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:51:36,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [261681049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:51:36,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:51:36,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 8] total 17 [2023-12-02 18:51:36,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969422239] [2023-12-02 18:51:36,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:51:36,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:51:36,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:36,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:51:36,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=191, Unknown=1, NotChecked=28, Total=272 [2023-12-02 18:51:36,756 INFO L87 Difference]: Start difference. First operand 203 states and 232 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 18:51:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:51:37,504 INFO L93 Difference]: Finished difference Result 209 states and 239 transitions. [2023-12-02 18:51:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:51:37,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2023-12-02 18:51:37,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:51:37,507 INFO L225 Difference]: With dead ends: 209 [2023-12-02 18:51:37,507 INFO L226 Difference]: Without dead ends: 209 [2023-12-02 18:51:37,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 118 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=191, Unknown=1, NotChecked=28, Total=272 [2023-12-02 18:51:37,508 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:51:37,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 364 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 18:51:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-02 18:51:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-12-02 18:51:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 111 states have (on average 1.936936936936937) internal successors, (215), 193 states have internal predecessors, (215), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:51:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 239 transitions. [2023-12-02 18:51:37,519 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 239 transitions. Word has length 48 [2023-12-02 18:51:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:51:37,519 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 239 transitions. [2023-12-02 18:51:37,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 18:51:37,519 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 239 transitions. [2023-12-02 18:51:37,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 18:51:37,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:37,521 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:51:37,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 18:51:37,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:37,722 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:51:37,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:37,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1417301781, now seen corresponding path program 1 times [2023-12-02 18:51:37,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:37,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995177082] [2023-12-02 18:51:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:37,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:37,745 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:51:37,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687716448] [2023-12-02 18:51:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:37,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:37,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:37,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:37,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 18:51:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:37,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 18:51:37,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:37,982 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2023-12-02 18:51:38,003 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 18:51:38,003 INFO L378 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 1 case distinctions, treesize of input 12 treesize of output 14 [2023-12-02 18:51:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 3 not checked. [2023-12-02 18:51:38,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:51:38,205 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-02 18:51:38,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:51:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-02 18:51:38,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:38,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995177082] [2023-12-02 18:51:38,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:51:38,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687716448] [2023-12-02 18:51:38,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687716448] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:51:38,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1776873866] [2023-12-02 18:51:38,225 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-12-02 18:51:38,225 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:51:38,226 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:51:38,226 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:51:38,226 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:51:41,587 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 65 for LOIs [2023-12-02 18:51:41,787 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:51:41,794 WARN L876 $PredicateComparison]: unable to prove that (and (= 3 |c_ULTIMATE.start_l0_insert_~list#1.base|) (= |c_ULTIMATE.start_l4_insert_#in~list#1.offset| 0) (= |c_ULTIMATE.start_l1_insert_~item~3#1.offset| 0) (<= 1 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_l3_insert_#in~list#1.offset| 4) (= |c_ULTIMATE.start_l4_insert_~list#1.offset| 0) (= |c_ULTIMATE.start_l2_insert_~list#1.offset| 0) (= |c_ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |c_~#list~0.offset| 0) (= |c_ULTIMATE.start_l4_insert_~item~0#1.offset| 0) (= |c_ULTIMATE.start_l1_insert_#in~list#1.offset| 4) (= |c_ULTIMATE.start_l0_insert_~list#1.offset| 0) (= |c_ULTIMATE.start_l0_insert_#in~list#1.base| 3) (= 3 |c_~#list~0.base|) (= |c_ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (= |c_ULTIMATE.start_l4_insert_#t~ret7#1.offset| 0) (= |c_ULTIMATE.start_l2_insert_#in~list#1.offset| 0) (= |c_ULTIMATE.start_l2_insert_~item~2#1.offset| 0) (= |c_ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (let ((.cse1 (= |c_ULTIMATE.start_l4_insert_#in~list#1.base| |c_ULTIMATE.start_l3_insert_~item~1#1.base|)) (.cse2 (not (= 0 |c_ULTIMATE.start_l3_insert_~item~1#1.base|))) (.cse3 (= (select |c_ULTIMATE.start_main_old_#valid#1| 0) 0)) (.cse4 (= |c_ULTIMATE.start_l2_insert_~item~2#1.base| |c_ULTIMATE.start_l3_insert_#in~list#1.base|)) (.cse5 (= |c_ULTIMATE.start_l2_insert_~list#1.base| |c_ULTIMATE.start_l2_insert_#in~list#1.base|)) (.cse6 (= (select |c_ULTIMATE.start_main_old_#valid#1| 2) 1)) (.cse7 (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_69| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_65| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_69| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_69|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_65| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_69| 4294967296))))) (.cse8 (= |c_ULTIMATE.start_l1_insert_~list#1.base| |c_ULTIMATE.start_l1_insert_#in~list#1.base|)) (.cse9 (not (= |c_ULTIMATE.start_l0_insert_~item~4#1.base| 0))) (.cse10 (not (= |c_ULTIMATE.start_l1_insert_~item~3#1.base| 0))) (.cse11 (= |c_ULTIMATE.start_l3_insert_#in~list#1.base| |c_ULTIMATE.start_l3_insert_~list#1.base|)) (.cse12 (= (select |c_ULTIMATE.start_main_old_#valid#1| 1) 1)) (.cse13 (not (= |c_ULTIMATE.start_l4_insert_~item~0#1.base| 0))) (.cse14 (not (= |c_ULTIMATE.start_l4_insert_#t~ret7#1.base| 0))) (.cse15 (not (= |c_ULTIMATE.start_l2_insert_~item~2#1.base| 0))) (.cse16 (= |c_ULTIMATE.start_l1_insert_#in~list#1.base| |c_ULTIMATE.start_l0_insert_~item~4#1.base|)) (.cse17 (= (select |c_ULTIMATE.start_main_old_#valid#1| 3) 1)) (.cse18 (= |c_ULTIMATE.start_l2_insert_#in~list#1.base| |c_ULTIMATE.start_l1_insert_~item~3#1.base|)) (.cse19 (= |c_ULTIMATE.start_l4_insert_#in~list#1.base| |c_ULTIMATE.start_l4_insert_~list#1.base|))) (or (and (exists ((|v_#memory_int_BEFORE_CALL_7| (Array Int (Array Int Int)))) (let ((.cse0 (select |v_#memory_int_BEFORE_CALL_7| 1))) (and (= (select .cse0 1) 0) (= (select .cse0 0) 48)))) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_7| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_7| 3) 0) 0)) (exists ((|v_#length_BEFORE_CALL_7| (Array Int Int))) (and (= (select |v_#length_BEFORE_CALL_7| 1) 2) (= (select |v_#length_BEFORE_CALL_7| 2) 14) (= (select |v_#length_BEFORE_CALL_7| 3) 4))) .cse9 .cse10 .cse11 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_7| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_7| 3) 0) 0)) .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and .cse1 .cse2 .cse3 .cse4 (exists ((|v_#length_BEFORE_CALL_9| (Array Int Int))) (and (= 14 (select |v_#length_BEFORE_CALL_9| 2)) (= (select |v_#length_BEFORE_CALL_9| 3) 4) (= 2 (select |v_#length_BEFORE_CALL_9| 1)))) .cse5 .cse6 .cse7 .cse8 (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_9| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_9| 3) 0) 0)) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 (exists ((|v_#memory_int_BEFORE_CALL_9| (Array Int (Array Int Int)))) (let ((.cse20 (select |v_#memory_int_BEFORE_CALL_9| 1))) (and (= (select .cse20 1) 0) (= 48 (select .cse20 0))))) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_9| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_9| 3) 0) 0)) .cse18 .cse19))) (not (= (select |c_#valid| |c_ULTIMATE.start_l4_insert_~item~0#1.base|) 1)) (= |c_ULTIMATE.start_l3_insert_~item~1#1.offset| 0) (= 4 |c_ULTIMATE.start_l3_insert_~list#1.offset|)) is different from true [2023-12-02 18:51:47,069 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3011#(and (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l4_insert_~item~0#1.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (or (and (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (not (= |ULTIMATE.start_l4_insert_~item~0#1.base| 0)) (= |ULTIMATE.start_l4_insert_~list#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (= |ULTIMATE.start_l3_insert_~item~1#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (exists ((|v_#length_BEFORE_CALL_9| (Array Int Int))) (and (= 14 (select |v_#length_BEFORE_CALL_9| 2)) (= (select |v_#length_BEFORE_CALL_9| 3) 4) (= 2 (select |v_#length_BEFORE_CALL_9| 1)))) (not (= |ULTIMATE.start_l3_insert_~item~1#1.base| 0)) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_69| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_65| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_69| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_69|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_65| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_69| 4294967296)))) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_9| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_9| 3) 0) 0)) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l4_insert_#t~ret7#1.base| 0)) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#memory_int_BEFORE_CALL_9| (Array Int (Array Int Int)))) (and (= (select (select |v_#memory_int_BEFORE_CALL_9| 1) 1) 0) (= 48 (select (select |v_#memory_int_BEFORE_CALL_9| 1) 0)))) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_9| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_9| 3) 0) 0)) (= |ULTIMATE.start_l3_insert_~list#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|)) (and (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (not (= |ULTIMATE.start_l4_insert_~item~0#1.base| 0)) (= |ULTIMATE.start_l4_insert_~list#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (exists ((|v_#memory_int_BEFORE_CALL_7| (Array Int (Array Int Int)))) (and (= (select (select |v_#memory_int_BEFORE_CALL_7| 1) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_7| 1) 0) 48))) (= |ULTIMATE.start_l3_insert_~item~1#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l3_insert_~item~1#1.base| 0)) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_69| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_65| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_69| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_69|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_65| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_69| 4294967296)))) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_7| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_7| 3) 0) 0)) (exists ((|v_#length_BEFORE_CALL_7| (Array Int Int))) (and (= (select |v_#length_BEFORE_CALL_7| 1) 2) (= (select |v_#length_BEFORE_CALL_7| 2) 14) (= (select |v_#length_BEFORE_CALL_7| 3) 4))) (not (= |ULTIMATE.start_l4_insert_#t~ret7#1.base| 0)) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_7| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_7| 3) 0) 0)) (= |ULTIMATE.start_l3_insert_~list#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|))) (= |ULTIMATE.start_l4_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 4 |ULTIMATE.start_l3_insert_#in~list#1.offset|) (= 3 |~#list~0.base|) (= |ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (= 0 |ULTIMATE.start_l4_insert_~list#1.offset|) (= |ULTIMATE.start_l2_insert_#in~list#1.offset| 0) (= |ULTIMATE.start_l3_insert_~list#1.offset| 4) (not (= (select |#valid| |ULTIMATE.start_l4_insert_~item~0#1.base|) 1)) (= |ULTIMATE.start_l4_insert_#t~ret7#1.offset| 0) (= |ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (= |ULTIMATE.start_l1_insert_~item~3#1.offset| 0) (= |ULTIMATE.start_l2_insert_~item~2#1.offset| 0) (= |ULTIMATE.start_l2_insert_~list#1.offset| 0) (= 4 |ULTIMATE.start_l1_insert_#in~list#1.offset|) (= |ULTIMATE.start_l3_insert_~item~1#1.offset| 0))' at error location [2023-12-02 18:51:47,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:51:47,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:51:47,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2023-12-02 18:51:47,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898799207] [2023-12-02 18:51:47,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:51:47,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:51:47,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:47,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:51:47,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=851, Unknown=8, NotChecked=122, Total=1122 [2023-12-02 18:51:47,072 INFO L87 Difference]: Start difference. First operand 209 states and 239 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 18:51:47,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:51:47,491 INFO L93 Difference]: Finished difference Result 299 states and 348 transitions. [2023-12-02 18:51:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:51:47,492 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2023-12-02 18:51:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:51:47,494 INFO L225 Difference]: With dead ends: 299 [2023-12-02 18:51:47,494 INFO L226 Difference]: Without dead ends: 299 [2023-12-02 18:51:47,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=153, Invalid=968, Unknown=9, NotChecked=130, Total=1260 [2023-12-02 18:51:47,496 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 219 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:51:47,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1084 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 666 Invalid, 0 Unknown, 333 Unchecked, 0.3s Time] [2023-12-02 18:51:47,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-02 18:51:47,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 207. [2023-12-02 18:51:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 111 states have (on average 1.9189189189189189) internal successors, (213), 191 states have internal predecessors, (213), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:51:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 237 transitions. [2023-12-02 18:51:47,507 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 237 transitions. Word has length 49 [2023-12-02 18:51:47,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:51:47,508 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 237 transitions. [2023-12-02 18:51:47,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 18:51:47,508 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 237 transitions. [2023-12-02 18:51:47,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-02 18:51:47,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:51:47,510 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:51:47,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 18:51:47,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:47,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:51:47,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:51:47,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1417301782, now seen corresponding path program 1 times [2023-12-02 18:51:47,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:51:47,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241521615] [2023-12-02 18:51:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:47,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:51:47,736 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:51:47,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723915507] [2023-12-02 18:51:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:51:47,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:51:47,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:51:47,738 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:51:47,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 18:51:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:51:47,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 18:51:47,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:51:47,954 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 1 [2023-12-02 18:51:49,996 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 15 treesize of output 11 [2023-12-02 18:51:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 18:51:52,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:51:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 18:51:52,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:51:52,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241521615] [2023-12-02 18:51:52,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:51:52,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723915507] [2023-12-02 18:51:52,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723915507] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:51:52,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [100981702] [2023-12-02 18:51:52,297 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-12-02 18:51:52,297 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:51:52,298 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:51:52,298 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:51:52,298 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:51:52,984 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 15 for LOIs [2023-12-02 18:51:53,138 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:51:53,999 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3841#(and (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 3 |~#list~0.base|) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (or (< (select |#length| |ULTIMATE.start_l4_insert_~item~0#1.base|) (+ 8 |ULTIMATE.start_l4_insert_~item~0#1.offset|)) (< (+ 4 |ULTIMATE.start_l4_insert_~item~0#1.offset|) 0)))' at error location [2023-12-02 18:51:53,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:51:53,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:51:53,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2023-12-02 18:51:54,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048860956] [2023-12-02 18:51:54,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:51:54,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:51:54,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:51:54,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:51:54,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=356, Unknown=2, NotChecked=0, Total=420 [2023-12-02 18:51:54,002 INFO L87 Difference]: Start difference. First operand 207 states and 237 transitions. Second operand has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 18:51:56,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:52:00,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:52:02,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:52:05,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:52:05,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:05,956 INFO L93 Difference]: Finished difference Result 215 states and 245 transitions. [2023-12-02 18:52:05,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:52:05,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 49 [2023-12-02 18:52:05,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:05,958 INFO L225 Difference]: With dead ends: 215 [2023-12-02 18:52:05,958 INFO L226 Difference]: Without dead ends: 211 [2023-12-02 18:52:05,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 119 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=75, Invalid=429, Unknown=2, NotChecked=0, Total=506 [2023-12-02 18:52:05,959 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 4 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 10 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:05,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 888 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 233 Invalid, 5 Unknown, 0 Unchecked, 9.8s Time] [2023-12-02 18:52:05,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-12-02 18:52:05,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 205. [2023-12-02 18:52:05,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 110 states have (on average 1.9272727272727272) internal successors, (212), 190 states have internal predecessors, (212), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:52:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 234 transitions. [2023-12-02 18:52:05,966 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 234 transitions. Word has length 49 [2023-12-02 18:52:05,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:05,966 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 234 transitions. [2023-12-02 18:52:05,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 18:52:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 234 transitions. [2023-12-02 18:52:05,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 18:52:05,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:05,967 INFO L195 NwaCegarLoop]: trace histogram [12, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:05,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 18:52:06,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:52:06,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:52:06,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:06,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2075616215, now seen corresponding path program 2 times [2023-12-02 18:52:06,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:06,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739899565] [2023-12-02 18:52:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:06,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:06,200 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:52:06,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567577266] [2023-12-02 18:52:06,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:52:06,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:52:06,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:52:06,202 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:52:06,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 18:52:06,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 18:52:06,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:52:06,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 18:52:06,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:52:06,565 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 1 [2023-12-02 18:52:06,586 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 13 treesize of output 9 [2023-12-02 18:52:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-02 18:52:06,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:52:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-02 18:52:06,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:06,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739899565] [2023-12-02 18:52:06,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:52:06,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567577266] [2023-12-02 18:52:06,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567577266] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:52:06,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2140711895] [2023-12-02 18:52:06,836 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-12-02 18:52:06,836 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:52:06,837 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:52:06,837 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:52:06,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:52:09,077 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 65 for LOIs [2023-12-02 18:52:09,249 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:52:10,511 WARN L876 $PredicateComparison]: unable to prove that (and (= 3 |c_ULTIMATE.start_l0_insert_~list#1.base|) (let ((.cse0 (= (select |c_ULTIMATE.start_main_old_#valid#1| 0) 0)) (.cse1 (= (select |c_ULTIMATE.start_main_old_#valid#1| 2) 1)) (.cse2 (not (= |c_ULTIMATE.start_l0_insert_~item~4#1.base| 0))) (.cse4 (= (select |c_ULTIMATE.start_main_old_#valid#1| 1) 1)) (.cse5 (= (select |c_ULTIMATE.start_main_old_#valid#1| 3) 1)) (.cse6 (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_111| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_111| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144| 4294967296)))))) (or (and (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_67| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_67| 3) 0) 0)) .cse0 .cse1 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_67| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_67| 3) 0) 0)) .cse2 (exists ((|v_#memory_int_BEFORE_CALL_67| (Array Int (Array Int Int)))) (let ((.cse3 (select |v_#memory_int_BEFORE_CALL_67| 1))) (and (= (select .cse3 0) 48) (= (select .cse3 1) 0)))) .cse4 .cse5 (exists ((|v_#length_BEFORE_CALL_67| (Array Int Int))) (and (= 2 (select |v_#length_BEFORE_CALL_67| 1)) (= (select |v_#length_BEFORE_CALL_67| 3) 4) (= 14 (select |v_#length_BEFORE_CALL_67| 2)))) .cse6) (and (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_69| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_69| 3) 0) 0)) (exists ((|v_#length_BEFORE_CALL_69| (Array Int Int))) (and (= 4 (select |v_#length_BEFORE_CALL_69| 3)) (= (select |v_#length_BEFORE_CALL_69| 2) 14) (= (select |v_#length_BEFORE_CALL_69| 1) 2))) (exists ((|v_#memory_int_BEFORE_CALL_69| (Array Int (Array Int Int)))) (let ((.cse7 (select |v_#memory_int_BEFORE_CALL_69| 1))) (and (= (select .cse7 1) 0) (= (select .cse7 0) 48)))) .cse0 .cse1 .cse2 .cse4 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_69| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_69| 3) 0) 0)) .cse5 .cse6))) (<= 1 |c_#StackHeapBarrier|) (= |c_~#list~0.offset| 0) (= |c_ULTIMATE.start_l0_insert_~list#1.offset| 0) (= |c_ULTIMATE.start_l0_insert_#in~list#1.base| 3) (= 3 |c_~#list~0.base|) (= |c_ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (= |c_ULTIMATE.start_l0_insert_#in~list#1.offset| 0)) is different from true [2023-12-02 18:52:14,134 WARN L876 $PredicateComparison]: unable to prove that (and (= 3 |c_ULTIMATE.start_l0_insert_~list#1.base|) (= |c_ULTIMATE.start_l4_insert_#in~list#1.offset| 0) (= |c_ULTIMATE.start_l1_insert_~item~3#1.offset| 0) (<= 1 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_l3_insert_#in~list#1.offset| 4) (= |c_ULTIMATE.start_l4_insert_~list#1.offset| 0) (= |c_ULTIMATE.start_l2_insert_~list#1.offset| 0) (= |c_ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |c_~#list~0.offset| 0) (= |c_ULTIMATE.start_l4_insert_~item~0#1.offset| 0) (let ((.cse0 (= |c_ULTIMATE.start_l4_insert_#in~list#1.base| |c_ULTIMATE.start_l3_insert_~item~1#1.base|)) (.cse1 (not (= 0 |c_ULTIMATE.start_l3_insert_~item~1#1.base|))) (.cse2 (= (select |c_ULTIMATE.start_main_old_#valid#1| 0) 0)) (.cse3 (= |c_ULTIMATE.start_l2_insert_~item~2#1.base| |c_ULTIMATE.start_l3_insert_#in~list#1.base|)) (.cse4 (= |c_ULTIMATE.start_l2_insert_~list#1.base| |c_ULTIMATE.start_l2_insert_#in~list#1.base|)) (.cse5 (= (select |c_ULTIMATE.start_main_old_#valid#1| 2) 1)) (.cse6 (= |c_ULTIMATE.start_l1_insert_~list#1.base| |c_ULTIMATE.start_l1_insert_#in~list#1.base|)) (.cse7 (not (= |c_ULTIMATE.start_l0_insert_~item~4#1.base| 0))) (.cse9 (not (= |c_ULTIMATE.start_l1_insert_~item~3#1.base| 0))) (.cse10 (= |c_ULTIMATE.start_l3_insert_#in~list#1.base| |c_ULTIMATE.start_l3_insert_~list#1.base|)) (.cse11 (= (select |c_ULTIMATE.start_main_old_#valid#1| 1) 1)) (.cse12 (not (= |c_ULTIMATE.start_l4_insert_~item~0#1.base| 0))) (.cse13 (not (= |c_ULTIMATE.start_l2_insert_~item~2#1.base| 0))) (.cse14 (= |c_ULTIMATE.start_l1_insert_#in~list#1.base| |c_ULTIMATE.start_l0_insert_~item~4#1.base|)) (.cse15 (= (select |c_ULTIMATE.start_main_old_#valid#1| 3) 1)) (.cse16 (= |c_ULTIMATE.start_l2_insert_#in~list#1.base| |c_ULTIMATE.start_l1_insert_~item~3#1.base|)) (.cse17 (= |c_ULTIMATE.start_l4_insert_#in~list#1.base| |c_ULTIMATE.start_l4_insert_~list#1.base|)) (.cse18 (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_111| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_111| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144| 4294967296)))))) (or (and .cse0 .cse1 (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_67| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_67| 3) 0) 0)) .cse2 .cse3 .cse4 .cse5 .cse6 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_67| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_67| 3) 0) 0)) .cse7 (exists ((|v_#memory_int_BEFORE_CALL_67| (Array Int (Array Int Int)))) (let ((.cse8 (select |v_#memory_int_BEFORE_CALL_67| 1))) (and (= (select .cse8 0) 48) (= (select .cse8 1) 0)))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (exists ((|v_#length_BEFORE_CALL_67| (Array Int Int))) (and (= 2 (select |v_#length_BEFORE_CALL_67| 1)) (= (select |v_#length_BEFORE_CALL_67| 3) 4) (= 14 (select |v_#length_BEFORE_CALL_67| 2)))) .cse16 .cse17 .cse18) (and (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_69| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_69| 3) 0) 0)) (exists ((|v_#length_BEFORE_CALL_69| (Array Int Int))) (and (= 4 (select |v_#length_BEFORE_CALL_69| 3)) (= (select |v_#length_BEFORE_CALL_69| 2) 14) (= (select |v_#length_BEFORE_CALL_69| 1) 2))) (exists ((|v_#memory_int_BEFORE_CALL_69| (Array Int (Array Int Int)))) (let ((.cse19 (select |v_#memory_int_BEFORE_CALL_69| 1))) (and (= (select .cse19 1) 0) (= (select .cse19 0) 48)))) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse9 .cse10 .cse11 .cse12 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_69| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_69| 3) 0) 0)) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18))) (= |c_ULTIMATE.start_l1_insert_#in~list#1.offset| 4) (= |c_ULTIMATE.start_l0_insert_~list#1.offset| 0) (= |c_ULTIMATE.start_l0_insert_#in~list#1.base| 3) (= 3 |c_~#list~0.base|) (= |c_ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (= |c_ULTIMATE.start_l2_insert_#in~list#1.offset| 0) (= |c_ULTIMATE.start_l2_insert_~item~2#1.offset| 0) (= |c_ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= |c_ULTIMATE.start_l3_insert_~item~1#1.offset| 0) (= 4 |c_ULTIMATE.start_l3_insert_~list#1.offset|)) is different from true [2023-12-02 18:52:14,671 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4643#(and (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (or (and (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (not (= |ULTIMATE.start_l4_insert_~item~0#1.base| 0)) (= |ULTIMATE.start_l4_insert_~list#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (= |ULTIMATE.start_l3_insert_~item~1#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_67| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_67| 3) 0) 0)) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l3_insert_~item~1#1.base| 0)) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_67| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_67| 3) 0) 0)) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l4_insert_#t~ret7#1.base| 0)) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (exists ((|v_#memory_int_BEFORE_CALL_67| (Array Int (Array Int Int)))) (and (= (select (select |v_#memory_int_BEFORE_CALL_67| 1) 0) 48) (= (select (select |v_#memory_int_BEFORE_CALL_67| 1) 1) 0))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#length_BEFORE_CALL_67| (Array Int Int))) (and (= 2 (select |v_#length_BEFORE_CALL_67| 1)) (= (select |v_#length_BEFORE_CALL_67| 3) 4) (= 14 (select |v_#length_BEFORE_CALL_67| 2)))) (= |ULTIMATE.start_l3_insert_~list#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_111| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_111| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144| 4294967296))))) (and (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_69| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_69| 3) 0) 0)) (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (exists ((|v_#length_BEFORE_CALL_69| (Array Int Int))) (and (= 4 (select |v_#length_BEFORE_CALL_69| 3)) (= (select |v_#length_BEFORE_CALL_69| 2) 14) (= (select |v_#length_BEFORE_CALL_69| 1) 2))) (not (= |ULTIMATE.start_l4_insert_~item~0#1.base| 0)) (= |ULTIMATE.start_l4_insert_~list#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (exists ((|v_#memory_int_BEFORE_CALL_69| (Array Int (Array Int Int)))) (and (= (select (select |v_#memory_int_BEFORE_CALL_69| 1) 1) 0) (= (select (select |v_#memory_int_BEFORE_CALL_69| 1) 0) 48))) (= |ULTIMATE.start_l3_insert_~item~1#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l3_insert_~item~1#1.base| 0)) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l4_insert_#t~ret7#1.base| 0)) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_69| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_69| 3) 0) 0)) (= |ULTIMATE.start_l3_insert_~list#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_111| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_111| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_144| 4294967296)))))) (= |ULTIMATE.start_l4_insert_~item~0#1.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= |ULTIMATE.start_l4_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 4 |ULTIMATE.start_l3_insert_#in~list#1.offset|) (<= (select |#length| |ULTIMATE.start_l4_insert_~item~0#1.base|) 7) (= 3 |~#list~0.base|) (= |ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (= 0 |ULTIMATE.start_l4_insert_~list#1.offset|) (= |ULTIMATE.start_l2_insert_#in~list#1.offset| 0) (= |ULTIMATE.start_l3_insert_~list#1.offset| 4) (= |ULTIMATE.start_l4_insert_#t~ret7#1.offset| 0) (= |ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (= |ULTIMATE.start_l1_insert_~item~3#1.offset| 0) (= |ULTIMATE.start_l2_insert_~item~2#1.offset| 0) (= |ULTIMATE.start_l2_insert_~list#1.offset| 0) (= 4 |ULTIMATE.start_l1_insert_#in~list#1.offset|) (= |ULTIMATE.start_l3_insert_~item~1#1.offset| 0))' at error location [2023-12-02 18:52:14,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:52:14,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:52:14,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-02 18:52:14,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865033453] [2023-12-02 18:52:14,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:52:14,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:52:14,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:14,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:52:14,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=841, Unknown=13, NotChecked=122, Total=1122 [2023-12-02 18:52:14,674 INFO L87 Difference]: Start difference. First operand 205 states and 234 transitions. Second operand has 12 states, 10 states have (on average 2.9) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 18:52:15,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:15,368 INFO L93 Difference]: Finished difference Result 213 states and 244 transitions. [2023-12-02 18:52:15,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 18:52:15,368 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2023-12-02 18:52:15,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:15,370 INFO L225 Difference]: With dead ends: 213 [2023-12-02 18:52:15,370 INFO L226 Difference]: Without dead ends: 210 [2023-12-02 18:52:15,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 140 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=253, Invalid=1461, Unknown=16, NotChecked=162, Total=1892 [2023-12-02 18:52:15,372 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 25 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:15,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1603 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:52:15,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-02 18:52:15,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2023-12-02 18:52:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 115 states have (on average 1.8869565217391304) internal successors, (217), 195 states have internal predecessors, (217), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:52:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 239 transitions. [2023-12-02 18:52:15,380 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 239 transitions. Word has length 60 [2023-12-02 18:52:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:15,381 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 239 transitions. [2023-12-02 18:52:15,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.9) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 18:52:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 239 transitions. [2023-12-02 18:52:15,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 18:52:15,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:15,382 INFO L195 NwaCegarLoop]: trace histogram [21, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:15,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 18:52:15,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:52:15,583 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:52:15,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:15,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2104329558, now seen corresponding path program 3 times [2023-12-02 18:52:15,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:15,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464436258] [2023-12-02 18:52:15,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:15,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:15,619 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:52:15,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153110058] [2023-12-02 18:52:15,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 18:52:15,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:52:15,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:52:15,620 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:52:15,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 18:52:16,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 18:52:16,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:52:16,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-02 18:52:16,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:52:16,227 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 1 [2023-12-02 18:52:16,251 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 13 treesize of output 9 [2023-12-02 18:52:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 245 proven. 33 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-02 18:52:16,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:52:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 38 proven. 75 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-12-02 18:52:16,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464436258] [2023-12-02 18:52:16,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:52:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153110058] [2023-12-02 18:52:16,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153110058] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:52:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1324643980] [2023-12-02 18:52:16,713 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-12-02 18:52:16,714 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:52:16,714 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:52:16,714 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:52:16,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:52:17,839 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 15 for LOIs [2023-12-02 18:52:18,112 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:52:19,194 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5533#(and (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 3 |~#list~0.base|) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (or (< (select |#length| |ULTIMATE.start_l4_insert_~item~0#1.base|) (+ 8 |ULTIMATE.start_l4_insert_~item~0#1.offset|)) (< (+ 4 |ULTIMATE.start_l4_insert_~item~0#1.offset|) 0)))' at error location [2023-12-02 18:52:19,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:52:19,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:52:19,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-12-02 18:52:19,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364923297] [2023-12-02 18:52:19,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:52:19,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 18:52:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:19,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 18:52:19,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2023-12-02 18:52:19,197 INFO L87 Difference]: Start difference. First operand 210 states and 239 transitions. Second operand has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 17 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 18:52:19,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:52:19,869 INFO L93 Difference]: Finished difference Result 220 states and 253 transitions. [2023-12-02 18:52:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 18:52:19,869 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 17 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 69 [2023-12-02 18:52:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:52:19,871 INFO L225 Difference]: With dead ends: 220 [2023-12-02 18:52:19,871 INFO L226 Difference]: Without dead ends: 217 [2023-12-02 18:52:19,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 172 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2023-12-02 18:52:19,872 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 10 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:52:19,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1862 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:52:19,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-12-02 18:52:19,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2023-12-02 18:52:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 122 states have (on average 1.8360655737704918) internal successors, (224), 202 states have internal predecessors, (224), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:52:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 246 transitions. [2023-12-02 18:52:19,880 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 246 transitions. Word has length 69 [2023-12-02 18:52:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:52:19,880 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 246 transitions. [2023-12-02 18:52:19,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 17 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 18:52:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 246 transitions. [2023-12-02 18:52:19,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 18:52:19,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:52:19,882 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:52:19,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 18:52:20,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:52:20,088 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:52:20,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:52:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash 209859177, now seen corresponding path program 4 times [2023-12-02 18:52:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:52:20,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589382046] [2023-12-02 18:52:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:52:20,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:52:20,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:52:20,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566950676] [2023-12-02 18:52:20,133 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 18:52:20,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:52:20,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:52:20,134 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:52:20,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 18:52:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:52:27,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-02 18:52:27,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:52:27,802 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 1 [2023-12-02 18:52:34,633 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-12-02 18:52:34,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:52:34,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 13 [2023-12-02 18:52:34,691 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 18:52:34,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 18:52:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 558 proven. 316 refuted. 0 times theorem prover too weak. 470 trivial. 147 not checked. [2023-12-02 18:52:34,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:52:35,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:52:35,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589382046] [2023-12-02 18:52:35,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:52:35,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566950676] [2023-12-02 18:52:35,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566950676] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:52:35,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1139153657] [2023-12-02 18:52:35,106 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-12-02 18:52:35,106 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:52:35,106 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:52:35,106 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:52:35,106 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:52:35,905 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 15 for LOIs [2023-12-02 18:52:36,061 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:52:51,794 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6317#(and (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 3 |~#list~0.base|) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (or (< (select |#length| |ULTIMATE.start_l4_insert_~item~0#1.base|) (+ 8 |ULTIMATE.start_l4_insert_~item~0#1.offset|)) (< (+ 4 |ULTIMATE.start_l4_insert_~item~0#1.offset|) 0)))' at error location [2023-12-02 18:52:51,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:52:51,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:52:51,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-12-02 18:52:51,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373545873] [2023-12-02 18:52:51,794 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:52:51,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 18:52:51,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:52:51,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 18:52:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1373, Unknown=6, NotChecked=74, Total=1560 [2023-12-02 18:52:51,796 INFO L87 Difference]: Start difference. First operand 217 states and 246 transitions. Second operand has 26 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 18:52:53,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:52:55,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:52:57,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:53:00,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:53:02,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:53:06,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:53:08,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:53:10,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:53:12,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:53:14,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:53:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:19,377 INFO L93 Difference]: Finished difference Result 307 states and 355 transitions. [2023-12-02 18:53:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 18:53:19,377 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 96 [2023-12-02 18:53:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:19,380 INFO L225 Difference]: With dead ends: 307 [2023-12-02 18:53:19,380 INFO L226 Difference]: Without dead ends: 307 [2023-12-02 18:53:19,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 149 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=188, Invalid=2359, Unknown=7, NotChecked=98, Total=2652 [2023-12-02 18:53:19,382 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 121 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 2655 mSolverCounterSat, 12 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 3006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2655 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 329 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:19,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 990 Invalid, 3006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2655 Invalid, 10 Unknown, 329 Unchecked, 23.3s Time] [2023-12-02 18:53:19,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-12-02 18:53:19,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 215. [2023-12-02 18:53:19,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 122 states have (on average 1.819672131147541) internal successors, (222), 200 states have internal predecessors, (222), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:53:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 244 transitions. [2023-12-02 18:53:19,392 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 244 transitions. Word has length 96 [2023-12-02 18:53:19,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:19,392 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 244 transitions. [2023-12-02 18:53:19,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 1.826086956521739) internal successors, (42), 23 states have internal predecessors, (42), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 18:53:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 244 transitions. [2023-12-02 18:53:19,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 18:53:19,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:19,394 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:19,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 18:53:19,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 18:53:19,604 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:53:19,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2084287728, now seen corresponding path program 1 times [2023-12-02 18:53:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:19,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653910048] [2023-12-02 18:53:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:19,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:19,652 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:53:19,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192687546] [2023-12-02 18:53:19,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:19,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:53:19,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:19,654 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:53:19,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 18:53:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:19,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 18:53:19,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:20,061 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2023-12-02 18:53:20,086 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 18:53:20,087 INFO L378 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 1 case distinctions, treesize of input 12 treesize of output 14 [2023-12-02 18:53:20,130 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-02 18:53:20,130 INFO L378 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 1 case distinctions, treesize of input 12 treesize of output 14 [2023-12-02 18:53:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 764 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 166 not checked. [2023-12-02 18:53:20,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:53:20,420 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-02 18:53:20,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2023-12-02 18:53:20,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 764 proven. 168 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2023-12-02 18:53:20,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:20,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653910048] [2023-12-02 18:53:20,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:53:20,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192687546] [2023-12-02 18:53:20,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192687546] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:53:20,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [602841609] [2023-12-02 18:53:20,432 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-12-02 18:53:20,432 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:53:20,432 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:53:20,433 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:53:20,433 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:53:22,478 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 65 for LOIs [2023-12-02 18:53:22,656 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:53:29,521 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7464#(and (not (= (select |#valid| |ULTIMATE.start_l4_insert_~list#1.base|) 1)) (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l4_insert_~item~0#1.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= |ULTIMATE.start_l4_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 4 |ULTIMATE.start_l3_insert_#in~list#1.offset|) (= (select |#valid| |ULTIMATE.start_l4_insert_~item~0#1.base|) 1) (= 3 |~#list~0.base|) (exists ((|v_#memory_$Pointer$.base_360| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_360| |ULTIMATE.start_l4_insert_~item~0#1.base| (store (select |v_#memory_$Pointer$.base_360| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4))))) (exists ((|v_#memory_int_319| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_319| |ULTIMATE.start_l4_insert_~item~0#1.base| (store (select |v_#memory_int_319| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4 (select (select |#memory_int| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4))))) (= |ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (= 0 |ULTIMATE.start_l4_insert_~list#1.offset|) (<= 8 (select |#length| |ULTIMATE.start_l4_insert_~item~0#1.base|)) (= |ULTIMATE.start_l2_insert_#in~list#1.offset| 0) (= |ULTIMATE.start_l3_insert_~list#1.offset| 4) (or (and (exists ((|v_old(#memory_int)_AFTER_CALL_111| (Array Int (Array Int Int)))) (and (= (select (select |v_old(#memory_int)_AFTER_CALL_111| 1) 1) 0) (= (select (select |v_old(#memory_int)_AFTER_CALL_111| 1) 0) 48))) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_159| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_159| 3) 0) 0)) (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (not (= |ULTIMATE.start_l4_insert_~item~0#1.base| 0)) (= |ULTIMATE.start_l4_insert_~list#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (= |ULTIMATE.start_l3_insert_~item~1#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_338| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_166| Int)) (and (or (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_338|) (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_338| 0)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_166| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_338| 4294967296)))) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l3_insert_~item~1#1.base| 0)) (exists ((|v_#length_BEFORE_CALL_161| (Array Int Int))) (and (= (select |v_#length_BEFORE_CALL_161| 2) 14) (= 4 (select |v_#length_BEFORE_CALL_161| 3)) (= 2 (select |v_#length_BEFORE_CALL_161| 1)))) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_159| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_159| 3) 0) 0)) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4) 0)) (= |ULTIMATE.start_l3_insert_~list#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|)) (and (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (not (= |ULTIMATE.start_l4_insert_~item~0#1.base| 0)) (= |ULTIMATE.start_l4_insert_~list#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (= |ULTIMATE.start_l3_insert_~item~1#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_338| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_166| Int)) (and (or (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_338|) (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_338| 0)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_166| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_338| 4294967296)))) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l3_insert_~item~1#1.base| 0)) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_157| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_157| 3) 0) 0)) (exists ((|v_old(#memory_int)_AFTER_CALL_110| (Array Int (Array Int Int)))) (and (= 48 (select (select |v_old(#memory_int)_AFTER_CALL_110| 1) 0)) (= (select (select |v_old(#memory_int)_AFTER_CALL_110| 1) 1) 0))) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4) 0)) (exists ((|v_#length_BEFORE_CALL_159| (Array Int Int))) (and (= (select |v_#length_BEFORE_CALL_159| 1) 2) (= (select |v_#length_BEFORE_CALL_159| 3) 4) (= 14 (select |v_#length_BEFORE_CALL_159| 2)))) (= |ULTIMATE.start_l3_insert_~list#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_157| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_157| 3) 0) 0)))) (= |ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (= |ULTIMATE.start_l1_insert_~item~3#1.offset| 0) (exists ((|v_#memory_$Pointer$.offset_360| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_360| |ULTIMATE.start_l4_insert_~item~0#1.base| (store (select |v_#memory_$Pointer$.offset_360| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4 0)))) (= |ULTIMATE.start_l2_insert_~item~2#1.offset| 0) (= |ULTIMATE.start_l2_insert_~list#1.offset| 0) (= 4 |ULTIMATE.start_l1_insert_#in~list#1.offset|) (= |ULTIMATE.start_l3_insert_~item~1#1.offset| 0))' at error location [2023-12-02 18:53:29,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:53:29,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 18:53:29,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2023-12-02 18:53:29,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728720166] [2023-12-02 18:53:29,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 18:53:29,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 18:53:29,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:53:29,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 18:53:29,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1025, Unknown=5, NotChecked=66, Total=1260 [2023-12-02 18:53:29,524 INFO L87 Difference]: Start difference. First operand 215 states and 244 transitions. Second operand has 13 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 18:53:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:53:29,994 INFO L93 Difference]: Finished difference Result 304 states and 352 transitions. [2023-12-02 18:53:29,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:53:29,994 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-12-02 18:53:29,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:53:29,997 INFO L225 Difference]: With dead ends: 304 [2023-12-02 18:53:29,997 INFO L226 Difference]: Without dead ends: 304 [2023-12-02 18:53:29,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 242 SyntacticMatches, 14 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=180, Invalid=1224, Unknown=6, NotChecked=72, Total=1482 [2023-12-02 18:53:29,998 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 229 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 327 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:53:29,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1158 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 754 Invalid, 0 Unknown, 327 Unchecked, 0.4s Time] [2023-12-02 18:53:29,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-02 18:53:30,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 212. [2023-12-02 18:53:30,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 122 states have (on average 1.7950819672131149) internal successors, (219), 197 states have internal predecessors, (219), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:53:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 241 transitions. [2023-12-02 18:53:30,006 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 241 transitions. Word has length 97 [2023-12-02 18:53:30,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:53:30,007 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 241 transitions. [2023-12-02 18:53:30,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 18:53:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 241 transitions. [2023-12-02 18:53:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 18:53:30,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:53:30,008 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:53:30,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 18:53:30,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:53:30,209 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:53:30,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:53:30,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2084287727, now seen corresponding path program 1 times [2023-12-02 18:53:30,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:53:30,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56944359] [2023-12-02 18:53:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:30,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:53:30,255 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:53:30,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444240932] [2023-12-02 18:53:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:53:30,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:53:30,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:53:30,257 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:53:30,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 18:53:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:53:30,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-02 18:53:30,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:53:30,679 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 1 [2023-12-02 18:53:35,805 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#valid| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-12-02 18:53:35,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:35,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 13 [2023-12-02 18:53:36,018 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 18:53:36,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 16 [2023-12-02 18:53:36,220 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-12-02 18:53:36,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:53:36,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 13 [2023-12-02 18:53:36,342 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 18:53:36,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 18:53:37,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 634 proven. 193 refuted. 0 times theorem prover too weak. 322 trivial. 342 not checked. [2023-12-02 18:53:37,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:53:37,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:53:37,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56944359] [2023-12-02 18:53:37,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:53:37,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444240932] [2023-12-02 18:53:37,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444240932] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:53:37,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1273057431] [2023-12-02 18:53:37,551 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-12-02 18:53:37,551 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:53:37,551 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:53:37,552 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:53:37,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:53:39,605 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 65 for LOIs [2023-12-02 18:53:39,783 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:53:51,725 WARN L876 $PredicateComparison]: unable to prove that (and (= 3 |c_ULTIMATE.start_l0_insert_~list#1.base|) (= |c_ULTIMATE.start_l1_insert_~item~3#1.offset| 0) (<= 1 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |c_~#list~0.offset| 0) (= |c_ULTIMATE.start_l1_insert_#in~list#1.offset| 4) (= |c_ULTIMATE.start_l0_insert_~list#1.offset| 0) (= |c_ULTIMATE.start_l0_insert_#in~list#1.base| 3) (= 3 |c_~#list~0.base|) (= |c_ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (let ((.cse1 (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_171| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367| Int)) (and (or (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367|) (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367| 0)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_171| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367| 4294967296))))) (.cse2 (= (select |c_ULTIMATE.start_main_old_#valid#1| 0) 0)) (.cse3 (= (select |c_ULTIMATE.start_main_old_#valid#1| 2) 1)) (.cse4 (= |c_ULTIMATE.start_l1_insert_~list#1.base| |c_ULTIMATE.start_l1_insert_#in~list#1.base|)) (.cse5 (not (= |c_ULTIMATE.start_l0_insert_~item~4#1.base| 0))) (.cse6 (not (= |c_ULTIMATE.start_l1_insert_~item~3#1.base| 0))) (.cse7 (= (select |c_ULTIMATE.start_main_old_#valid#1| 1) 1)) (.cse8 (= |c_ULTIMATE.start_l1_insert_#in~list#1.base| |c_ULTIMATE.start_l0_insert_~item~4#1.base|)) (.cse9 (= (select |c_ULTIMATE.start_main_old_#valid#1| 3) 1))) (or (and (exists ((|v_old(#memory_int)_AFTER_CALL_129| (Array Int (Array Int Int)))) (let ((.cse0 (select |v_old(#memory_int)_AFTER_CALL_129| 1))) (and (= (select .cse0 1) 0) (= 48 (select .cse0 0))))) .cse1 .cse2 .cse3 .cse4 (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_189| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_189| 3) 0) 0)) .cse5 .cse6 .cse7 .cse8 (exists ((|v_#length_BEFORE_CALL_195| (Array Int Int))) (and (= 14 (select |v_#length_BEFORE_CALL_195| 2)) (= (select |v_#length_BEFORE_CALL_195| 3) 4) (= 2 (select |v_#length_BEFORE_CALL_195| 1)))) .cse9 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_189| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_189| 3) 0) 0))) (and .cse1 .cse2 (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_187| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_187| 3) 0) 0)) (exists ((|v_old(#memory_int)_AFTER_CALL_128| (Array Int (Array Int Int)))) (let ((.cse10 (select |v_old(#memory_int)_AFTER_CALL_128| 1))) (and (= (select .cse10 0) 48) (= (select .cse10 1) 0)))) .cse3 .cse4 .cse5 .cse6 .cse7 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_187| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_187| 3) 0) 0)) .cse8 .cse9 (exists ((|v_#length_BEFORE_CALL_193| (Array Int Int))) (and (= 2 (select |v_#length_BEFORE_CALL_193| 1)) (= (select |v_#length_BEFORE_CALL_193| 2) 14) (= (select |v_#length_BEFORE_CALL_193| 3) 4)))))) (= |c_ULTIMATE.start_l0_insert_#in~list#1.offset| 0)) is different from true [2023-12-02 18:54:04,222 WARN L876 $PredicateComparison]: unable to prove that (and (= 3 |c_ULTIMATE.start_l0_insert_~list#1.base|) (= |c_ULTIMATE.start_l4_insert_#in~list#1.offset| 0) (= |c_ULTIMATE.start_l4_insert_#t~ret6#1.offset| 0) (= |c_ULTIMATE.start_l1_insert_~item~3#1.offset| 0) (<= 1 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_l3_insert_#in~list#1.offset| 4) (= |c_ULTIMATE.start_l4_insert_~list#1.offset| 0) (= |c_ULTIMATE.start_l2_insert_~list#1.offset| 0) (= |c_ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |c_~#list~0.offset| 0) (= |c_ULTIMATE.start_l1_insert_#in~list#1.offset| 4) (let ((.cse1 (= |c_ULTIMATE.start_l4_insert_#in~list#1.base| |c_ULTIMATE.start_l3_insert_~item~1#1.base|)) (.cse2 (not (= 0 |c_ULTIMATE.start_l3_insert_~item~1#1.base|))) (.cse3 (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_171| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367| Int)) (and (or (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367|) (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367| 0)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_171| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367| 4294967296))))) (.cse4 (= (select |c_ULTIMATE.start_main_old_#valid#1| 0) 0)) (.cse5 (= |c_ULTIMATE.start_l2_insert_~item~2#1.base| |c_ULTIMATE.start_l3_insert_#in~list#1.base|)) (.cse6 (= |c_ULTIMATE.start_l2_insert_~list#1.base| |c_ULTIMATE.start_l2_insert_#in~list#1.base|)) (.cse7 (= (select |c_ULTIMATE.start_main_old_#valid#1| 2) 1)) (.cse8 (= |c_ULTIMATE.start_l1_insert_~list#1.base| |c_ULTIMATE.start_l1_insert_#in~list#1.base|)) (.cse9 (not (= |c_ULTIMATE.start_l0_insert_~item~4#1.base| 0))) (.cse10 (not (= |c_ULTIMATE.start_l4_insert_#t~ret6#1.base| 0))) (.cse11 (not (= |c_ULTIMATE.start_l1_insert_~item~3#1.base| 0))) (.cse12 (= |c_ULTIMATE.start_l3_insert_#in~list#1.base| |c_ULTIMATE.start_l3_insert_~list#1.base|)) (.cse13 (= (select |c_ULTIMATE.start_main_old_#valid#1| 1) 1)) (.cse14 (not (= |c_ULTIMATE.start_l2_insert_~item~2#1.base| 0))) (.cse15 (= |c_ULTIMATE.start_l1_insert_#in~list#1.base| |c_ULTIMATE.start_l0_insert_~item~4#1.base|)) (.cse16 (= (select |c_ULTIMATE.start_main_old_#valid#1| 3) 1)) (.cse17 (= |c_ULTIMATE.start_l2_insert_#in~list#1.base| |c_ULTIMATE.start_l1_insert_~item~3#1.base|)) (.cse18 (= |c_ULTIMATE.start_l4_insert_#in~list#1.base| |c_ULTIMATE.start_l4_insert_~list#1.base|))) (or (and (exists ((|v_old(#memory_int)_AFTER_CALL_129| (Array Int (Array Int Int)))) (let ((.cse0 (select |v_old(#memory_int)_AFTER_CALL_129| 1))) (and (= (select .cse0 1) 0) (= 48 (select .cse0 0))))) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_189| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_189| 3) 0) 0)) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (exists ((|v_#length_BEFORE_CALL_195| (Array Int Int))) (and (= 14 (select |v_#length_BEFORE_CALL_195| 2)) (= (select |v_#length_BEFORE_CALL_195| 3) 4) (= 2 (select |v_#length_BEFORE_CALL_195| 1)))) .cse16 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_189| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_189| 3) 0) 0)) .cse17 .cse18) (and .cse1 .cse2 .cse3 .cse4 .cse5 (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_187| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_187| 3) 0) 0)) (exists ((|v_old(#memory_int)_AFTER_CALL_128| (Array Int (Array Int Int)))) (let ((.cse19 (select |v_old(#memory_int)_AFTER_CALL_128| 1))) (and (= (select .cse19 0) 48) (= (select .cse19 1) 0)))) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_187| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_187| 3) 0) 0)) .cse14 .cse15 .cse16 (exists ((|v_#length_BEFORE_CALL_193| (Array Int Int))) (and (= 2 (select |v_#length_BEFORE_CALL_193| 1)) (= (select |v_#length_BEFORE_CALL_193| 2) 14) (= (select |v_#length_BEFORE_CALL_193| 3) 4))) .cse17 .cse18))) (= |c_ULTIMATE.start_l0_insert_~list#1.offset| 0) (= |c_ULTIMATE.start_l0_insert_#in~list#1.base| 3) (= 3 |c_~#list~0.base|) (= |c_ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (= |c_ULTIMATE.start_l2_insert_#in~list#1.offset| 0) (= |c_ULTIMATE.start_l2_insert_~item~2#1.offset| 0) (= |c_ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= |c_ULTIMATE.start_l3_insert_~item~1#1.offset| 0) (= 4 |c_ULTIMATE.start_l3_insert_~list#1.offset|)) is different from true [2023-12-02 18:54:08,649 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8333#(and (<= (select |#length| |ULTIMATE.start_l4_insert_~list#1.base|) 3) (exists ((|v_#memory_$Pointer$.base_378| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.base| (store |v_#memory_$Pointer$.base_378| |ULTIMATE.start_l4_insert_~item~0#1.base| (store (select |v_#memory_$Pointer$.base_378| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4))))) (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l4_insert_~item~0#1.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= |ULTIMATE.start_l4_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 4 |ULTIMATE.start_l3_insert_#in~list#1.offset|) (= (select |#valid| |ULTIMATE.start_l4_insert_~item~0#1.base|) 1) (= 3 |~#list~0.base|) (= |ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (= 0 |ULTIMATE.start_l4_insert_~list#1.offset|) (<= 8 (select |#length| |ULTIMATE.start_l4_insert_~item~0#1.base|)) (= |ULTIMATE.start_l2_insert_#in~list#1.offset| 0) (exists ((|v_#memory_int_337| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_337| |ULTIMATE.start_l4_insert_~item~0#1.base| (store (select |v_#memory_int_337| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4 (select (select |#memory_int| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4))))) (= |ULTIMATE.start_l3_insert_~list#1.offset| 4) (or (and (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (not (= |ULTIMATE.start_l4_insert_~item~0#1.base| 0)) (= |ULTIMATE.start_l4_insert_~list#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (= |ULTIMATE.start_l3_insert_~item~1#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_171| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367| Int)) (and (or (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367|) (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367| 0)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_171| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367| 4294967296)))) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_187| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_187| 3) 0) 0)) (exists ((|v_old(#memory_int)_AFTER_CALL_128| (Array Int (Array Int Int)))) (and (= (select (select |v_old(#memory_int)_AFTER_CALL_128| 1) 0) 48) (= (select (select |v_old(#memory_int)_AFTER_CALL_128| 1) 1) 0))) (not (= |ULTIMATE.start_l3_insert_~item~1#1.base| 0)) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_187| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_187| 3) 0) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4) 0)) (exists ((|v_#length_BEFORE_CALL_193| (Array Int Int))) (and (= 2 (select |v_#length_BEFORE_CALL_193| 1)) (= (select |v_#length_BEFORE_CALL_193| 2) 14) (= (select |v_#length_BEFORE_CALL_193| 3) 4))) (= |ULTIMATE.start_l3_insert_~list#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|)) (and (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (not (= |ULTIMATE.start_l4_insert_~item~0#1.base| 0)) (= |ULTIMATE.start_l4_insert_~list#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (= |ULTIMATE.start_l3_insert_~item~1#1.base| |ULTIMATE.start_l4_insert_#in~list#1.base|) (exists ((|v_old(#memory_int)_AFTER_CALL_129| (Array Int (Array Int Int)))) (and (= (select (select |v_old(#memory_int)_AFTER_CALL_129| 1) 1) 0) (= 48 (select (select |v_old(#memory_int)_AFTER_CALL_129| 1) 0)))) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_171| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367| Int)) (and (or (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367|) (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367| 0)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_171| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_367| 4294967296)))) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (not (= |ULTIMATE.start_l3_insert_~item~1#1.base| 0)) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_189| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_189| 3) 0) 0)) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#length_BEFORE_CALL_195| (Array Int Int))) (and (= 14 (select |v_#length_BEFORE_CALL_195| 2)) (= (select |v_#length_BEFORE_CALL_195| 3) 4) (= 2 (select |v_#length_BEFORE_CALL_195| 1)))) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4) 0)) (= |ULTIMATE.start_l3_insert_~list#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_189| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_189| 3) 0) 0)) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|))) (= |ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (= |ULTIMATE.start_l1_insert_~item~3#1.offset| 0) (= |ULTIMATE.start_l2_insert_~item~2#1.offset| 0) (= |ULTIMATE.start_l2_insert_~list#1.offset| 0) (exists ((|v_#memory_$Pointer$.offset_378| (Array Int (Array Int Int)))) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_378| |ULTIMATE.start_l4_insert_~item~0#1.base| (store (select |v_#memory_$Pointer$.offset_378| |ULTIMATE.start_l4_insert_~item~0#1.base|) 4 0)))) (= 4 |ULTIMATE.start_l1_insert_#in~list#1.offset|) (= |ULTIMATE.start_l3_insert_~item~1#1.offset| 0))' at error location [2023-12-02 18:54:08,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:54:08,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:54:08,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-12-02 18:54:08,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006189130] [2023-12-02 18:54:08,649 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:54:08,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 18:54:08,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:54:08,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 18:54:08,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1804, Unknown=13, NotChecked=356, Total=2352 [2023-12-02 18:54:08,651 INFO L87 Difference]: Start difference. First operand 212 states and 241 transitions. Second operand has 24 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 18:54:10,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:54:12,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:54:14,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:54:16,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:54:19,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:54:21,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:54:23,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:54:25,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:54:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:31,935 INFO L93 Difference]: Finished difference Result 302 states and 350 transitions. [2023-12-02 18:54:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 18:54:31,935 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 97 [2023-12-02 18:54:31,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:31,937 INFO L225 Difference]: With dead ends: 302 [2023-12-02 18:54:31,937 INFO L226 Difference]: Without dead ends: 302 [2023-12-02 18:54:31,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 143 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=251, Invalid=2831, Unknown=14, NotChecked=444, Total=3540 [2023-12-02 18:54:31,940 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 132 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 14 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 3375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 648 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:31,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 804 Invalid, 3375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2705 Invalid, 8 Unknown, 648 Unchecked, 19.4s Time] [2023-12-02 18:54:31,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-12-02 18:54:31,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 210. [2023-12-02 18:54:31,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 122 states have (on average 1.778688524590164) internal successors, (217), 195 states have internal predecessors, (217), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:54:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 239 transitions. [2023-12-02 18:54:31,947 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 239 transitions. Word has length 97 [2023-12-02 18:54:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:31,947 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 239 transitions. [2023-12-02 18:54:31,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 18:54:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 239 transitions. [2023-12-02 18:54:31,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 18:54:31,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:31,948 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:31,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 18:54:32,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:32,148 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:54:32,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:32,149 INFO L85 PathProgramCache]: Analyzing trace with hash 608652345, now seen corresponding path program 1 times [2023-12-02 18:54:32,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:54:32,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983458699] [2023-12-02 18:54:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:54:32,196 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:54:32,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285388526] [2023-12-02 18:54:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:32,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:32,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:32,197 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:32,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 18:54:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:32,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 18:54:32,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:32,649 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-12-02 18:54:32,689 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-02 18:54:32,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2023-12-02 18:54:32,727 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#valid| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-12-02 18:54:32,787 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-12-02 18:54:32,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-12-02 18:54:32,829 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2023-12-02 18:54:32,858 INFO L349 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2023-12-02 18:54:32,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 22 [2023-12-02 18:54:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 681 proven. 3 refuted. 0 times theorem prover too weak. 306 trivial. 501 not checked. [2023-12-02 18:54:32,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:54:33,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:54:33,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983458699] [2023-12-02 18:54:33,100 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:54:33,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285388526] [2023-12-02 18:54:33,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285388526] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:54:33,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1677867154] [2023-12-02 18:54:33,102 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 18:54:33,102 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:54:33,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:54:33,103 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:54:33,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:54:35,747 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 65 for LOIs [2023-12-02 18:54:35,921 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:54:47,416 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9274#(and (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 4 |ULTIMATE.start_l3_insert_#in~list#1.offset|) (not (= (select |#valid| |ULTIMATE.start_l3_insert_~list#1.base|) 1)) (= 3 |~#list~0.base|) (= |ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (= |ULTIMATE.start_l2_insert_#in~list#1.offset| 0) (= |ULTIMATE.start_l3_insert_~list#1.offset| 4) (= |ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (exists ((|v_#memory_$Pointer$.base_419| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_418| (Array Int (Array Int Int))) (|v_ULTIMATE.start_l4_insert_~list#1.base_19| Int) (|v_#memory_int_379| (Array Int (Array Int Int))) (|v_#memory_int_378| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_418| (Array Int (Array Int Int))) (|v_ULTIMATE.start_l4_insert_#in~list#1.base_11| Int) (|v_#memory_int_377| (Array Int (Array Int Int)))) (and (= (store |v_#memory_int_377| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0) (store (select |v_#memory_int_377| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 4 (select (select |v_#memory_int_378| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 4))) |v_#memory_int_378|) (= |#memory_$Pointer$.base| (store (store |v_#memory_$Pointer$.base_419| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0) (store (select |v_#memory_$Pointer$.base_419| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 0 (select (select |v_#memory_$Pointer$.base_419| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_19| (store (select (store |v_#memory_$Pointer$.base_419| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0) (store (select |v_#memory_$Pointer$.base_419| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 0 (select (select |v_#memory_$Pointer$.base_419| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)))) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 1) (<= 8 (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0))) (= |#memory_$Pointer$.offset| (store (store |v_#memory_$Pointer$.offset_418| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0) (store (store (select |v_#memory_$Pointer$.offset_418| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_418| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0) (store (select |v_#memory_$Pointer$.offset_418| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_19| (store (select (store |v_#memory_$Pointer$.offset_418| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0) (store (store (select |v_#memory_$Pointer$.offset_418| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_418| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0) (store (select |v_#memory_$Pointer$.offset_418| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0 0))) (<= 4 (select |#length| |v_ULTIMATE.start_l4_insert_~list#1.base_19|)) (or (and (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_217| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_217| 3) 0) 0)) (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (not (= (select (select |v_#memory_$Pointer$.base_419| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 4) 0)) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_406| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_180| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_406| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_406|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_180| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_406| 4294967296)))) (not (= |ULTIMATE.start_l3_insert_~item~1#1.base| 0)) (exists ((|v_#length_BEFORE_CALL_223| (Array Int Int))) (and (= (select |v_#length_BEFORE_CALL_223| 2) 14) (= 2 (select |v_#length_BEFORE_CALL_223| 1)) (= (select |v_#length_BEFORE_CALL_223| 3) 4))) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (exists ((|v_old(#memory_int)_AFTER_CALL_146| (Array Int (Array Int Int)))) (and (= (select (select |v_old(#memory_int)_AFTER_CALL_146| 1) 1) 0) (= (select (select |v_old(#memory_int)_AFTER_CALL_146| 1) 0) 48))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |v_ULTIMATE.start_l4_insert_#in~list#1.base_11| |ULTIMATE.start_l3_insert_~item~1#1.base|) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_217| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_217| 3) 0) 0)) (= |v_ULTIMATE.start_l4_insert_#in~list#1.base_11| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0) 0)) (= |ULTIMATE.start_l3_insert_~list#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|)) (and (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (exists ((|v_old(#memory_int)_AFTER_CALL_147| (Array Int (Array Int Int)))) (and (= 48 (select (select |v_old(#memory_int)_AFTER_CALL_147| 1) 0)) (= (select (select |v_old(#memory_int)_AFTER_CALL_147| 1) 1) 0))) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_219| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_219| 3) 0) 0)) (not (= (select (select |v_#memory_$Pointer$.base_419| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 4) 0)) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_406| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_180| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_406| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_406|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_180| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_406| 4294967296)))) (not (= |ULTIMATE.start_l3_insert_~item~1#1.base| 0)) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (exists ((|v_#length_BEFORE_CALL_225| (Array Int Int))) (and (= 2 (select |v_#length_BEFORE_CALL_225| 1)) (= (select |v_#length_BEFORE_CALL_225| 3) 4) (= (select |v_#length_BEFORE_CALL_225| 2) 14))) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |v_ULTIMATE.start_l4_insert_#in~list#1.base_11| |ULTIMATE.start_l3_insert_~item~1#1.base|) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_219| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_219| 3) 0) 0)) (= |v_ULTIMATE.start_l4_insert_#in~list#1.base_11| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0) 0)) (= |ULTIMATE.start_l3_insert_~list#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|))) (= (store |v_#memory_int_378| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0) (store (select |v_#memory_int_378| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 0 (select (select |v_#memory_int_379| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 0))) |v_#memory_int_379|) (= |#memory_int| (store |v_#memory_int_379| |v_ULTIMATE.start_l4_insert_~list#1.base_19| (store (select |v_#memory_int_379| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0 (select (select |#memory_int| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)))) (= (select |#valid| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 1) (= (store |v_#memory_$Pointer$.base_418| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0) (store (select |v_#memory_$Pointer$.base_418| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 4 (select (select |v_#memory_$Pointer$.base_419| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_19|) 0)) 4))) |v_#memory_$Pointer$.base_419|))) (= |ULTIMATE.start_l1_insert_~item~3#1.offset| 0) (= |ULTIMATE.start_l2_insert_~item~2#1.offset| 0) (= |ULTIMATE.start_l2_insert_~list#1.offset| 0) (= 4 |ULTIMATE.start_l1_insert_#in~list#1.offset|) (= |ULTIMATE.start_l3_insert_~item~1#1.offset| 0))' at error location [2023-12-02 18:54:47,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:54:47,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:54:47,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-12-02 18:54:47,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562478775] [2023-12-02 18:54:47,416 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:54:47,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 18:54:47,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:54:47,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 18:54:47,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1503, Unknown=12, NotChecked=246, Total=1980 [2023-12-02 18:54:47,418 INFO L87 Difference]: Start difference. First operand 210 states and 239 transitions. Second operand has 15 states, 12 states have (on average 3.5) internal successors, (42), 13 states have internal predecessors, (42), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 18:54:48,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:54:48,020 INFO L93 Difference]: Finished difference Result 299 states and 347 transitions. [2023-12-02 18:54:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 18:54:48,021 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.5) internal successors, (42), 13 states have internal predecessors, (42), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 101 [2023-12-02 18:54:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:54:48,023 INFO L225 Difference]: With dead ends: 299 [2023-12-02 18:54:48,023 INFO L226 Difference]: Without dead ends: 299 [2023-12-02 18:54:48,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 170 SyntacticMatches, 11 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=244, Invalid=1826, Unknown=12, NotChecked=270, Total=2352 [2023-12-02 18:54:48,025 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 242 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 965 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:54:48,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1193 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 768 Invalid, 0 Unknown, 965 Unchecked, 0.4s Time] [2023-12-02 18:54:48,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-12-02 18:54:48,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 207. [2023-12-02 18:54:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 122 states have (on average 1.7540983606557377) internal successors, (214), 192 states have internal predecessors, (214), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:54:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 236 transitions. [2023-12-02 18:54:48,033 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 236 transitions. Word has length 101 [2023-12-02 18:54:48,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:54:48,034 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 236 transitions. [2023-12-02 18:54:48,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.5) internal successors, (42), 13 states have internal predecessors, (42), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 18:54:48,034 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 236 transitions. [2023-12-02 18:54:48,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-02 18:54:48,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:54:48,035 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:54:48,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 18:54:48,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:48,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:54:48,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:54:48,236 INFO L85 PathProgramCache]: Analyzing trace with hash 608652346, now seen corresponding path program 1 times [2023-12-02 18:54:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:54:48,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909397953] [2023-12-02 18:54:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:48,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:54:48,288 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:54:48,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461841396] [2023-12-02 18:54:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:54:48,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:54:48,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:54:48,289 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:54:48,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 18:54:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:54:50,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-02 18:54:50,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:54:50,820 INFO L378 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 14 treesize of output 3 [2023-12-02 18:54:50,871 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 1 [2023-12-02 18:54:58,969 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-12-02 18:54:59,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:54:59,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 13 [2023-12-02 18:54:59,270 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-02 18:54:59,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2023-12-02 18:55:00,213 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#valid| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-12-02 18:55:00,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:55:00,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:55:00,395 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-12-02 18:55:00,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-12-02 18:55:01,072 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-12-02 18:55:01,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:55:01,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-12-02 18:55:01,227 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-12-02 18:55:01,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-12-02 18:55:02,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 436 proven. 191 refuted. 0 times theorem prover too weak. 172 trivial. 692 not checked. [2023-12-02 18:55:02,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:55:03,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:55:03,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909397953] [2023-12-02 18:55:03,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:55:03,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461841396] [2023-12-02 18:55:03,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461841396] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:55:03,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1580267048] [2023-12-02 18:55:03,018 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2023-12-02 18:55:03,018 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:55:03,018 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:55:03,019 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:55:03,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:55:05,518 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 65 for LOIs [2023-12-02 18:55:05,682 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:55:53,528 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10170#(and (<= (select |#length| |ULTIMATE.start_l3_insert_~list#1.base|) 7) (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 4 |ULTIMATE.start_l3_insert_#in~list#1.offset|) (= 3 |~#list~0.base|) (= |ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (= |ULTIMATE.start_l2_insert_#in~list#1.offset| 0) (= |ULTIMATE.start_l3_insert_~list#1.offset| 4) (= |ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (= |ULTIMATE.start_l1_insert_~item~3#1.offset| 0) (= |ULTIMATE.start_l2_insert_~item~2#1.offset| 0) (exists ((|v_ULTIMATE.start_l4_insert_#in~list#1.base_13| Int) (|v_#memory_int_401| (Array Int (Array Int Int))) (|v_#memory_int_400| (Array Int (Array Int Int))) (|v_#memory_int_399| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_440| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_441| (Array Int (Array Int Int))) (|v_ULTIMATE.start_l4_insert_~list#1.base_20| Int) (|v_#memory_$Pointer$.base_440| (Array Int (Array Int Int)))) (and (= (store |v_#memory_int_400| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0) (store (select |v_#memory_int_400| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 0 (select (select |v_#memory_int_401| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 0))) |v_#memory_int_401|) (= (select |#valid| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 1) (= |#memory_int| (store |v_#memory_int_401| |v_ULTIMATE.start_l4_insert_~list#1.base_20| (store (select |v_#memory_int_401| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0 (select (select |#memory_int| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)))) (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 1) (<= 8 (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0))) (<= 4 (select |#length| |v_ULTIMATE.start_l4_insert_~list#1.base_20|)) (= (store (store |v_#memory_$Pointer$.offset_440| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0) (store (store (select |v_#memory_$Pointer$.offset_440| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_440| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0) (store (select |v_#memory_$Pointer$.offset_440| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_20| (store (select (store |v_#memory_$Pointer$.offset_440| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0) (store (store (select |v_#memory_$Pointer$.offset_440| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_440| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0) (store (select |v_#memory_$Pointer$.offset_440| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0 0)) |#memory_$Pointer$.offset|) (= (store (store |v_#memory_$Pointer$.base_441| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0) (store (select |v_#memory_$Pointer$.base_441| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 0 (select (select |v_#memory_$Pointer$.base_441| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_20| (store (select (store |v_#memory_$Pointer$.base_441| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0) (store (select |v_#memory_$Pointer$.base_441| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 0 (select (select |v_#memory_$Pointer$.base_441| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0))) |#memory_$Pointer$.base|) (= (store |v_#memory_$Pointer$.base_440| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0) (store (select |v_#memory_$Pointer$.base_440| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 4 (select (select |v_#memory_$Pointer$.base_441| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 4))) |v_#memory_$Pointer$.base_441|) (= (store |v_#memory_int_399| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0) (store (select |v_#memory_int_399| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 4 (select (select |v_#memory_int_400| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 4))) |v_#memory_int_400|) (or (and (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0) 0)) (not (= (select (select |v_#memory_$Pointer$.base_441| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 4) 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_439| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_185| Int)) (and (or (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_439|) (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_439| 0)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_185| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_439| 4294967296)))) (= |v_ULTIMATE.start_l4_insert_#in~list#1.base_13| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) (not (= |ULTIMATE.start_l3_insert_~item~1#1.base| 0)) (exists ((|v_old(#memory_int)_AFTER_CALL_165| (Array Int (Array Int Int)))) (and (= 0 (select (select |v_old(#memory_int)_AFTER_CALL_165| 1) 1)) (= (select (select |v_old(#memory_int)_AFTER_CALL_165| 1) 0) 48))) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (= |v_ULTIMATE.start_l4_insert_#in~list#1.base_13| |ULTIMATE.start_l3_insert_~item~1#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#length_BEFORE_CALL_261| (Array Int Int))) (and (= (select |v_#length_BEFORE_CALL_261| 1) 2) (= (select |v_#length_BEFORE_CALL_261| 2) 14) (= (select |v_#length_BEFORE_CALL_261| 3) 4))) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_249| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_249| 3) 0) 0)) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_249| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_249| 3) 0) 0)) (= |ULTIMATE.start_l3_insert_~list#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|)) (and (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0) 0)) (not (= (select (select |v_#memory_$Pointer$.base_441| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) 0)) 4) 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (exists ((|v_old(#memory_int)_AFTER_CALL_164| (Array Int (Array Int Int)))) (and (= (select (select |v_old(#memory_int)_AFTER_CALL_164| 1) 1) 0) (= (select (select |v_old(#memory_int)_AFTER_CALL_164| 1) 0) 48))) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_439| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_185| Int)) (and (or (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_439|) (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_439| 0)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_185| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_439| 4294967296)))) (= |v_ULTIMATE.start_l4_insert_#in~list#1.base_13| |v_ULTIMATE.start_l4_insert_~list#1.base_20|) (not (= |ULTIMATE.start_l3_insert_~item~1#1.base| 0)) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_247| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_247| 3) 0) 0)) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_247| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_247| 3) 0) 0)) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (= |v_ULTIMATE.start_l4_insert_#in~list#1.base_13| |ULTIMATE.start_l3_insert_~item~1#1.base|) (exists ((|v_#length_BEFORE_CALL_259| (Array Int Int))) (and (= (select |v_#length_BEFORE_CALL_259| 3) 4) (= 2 (select |v_#length_BEFORE_CALL_259| 1)) (= 14 (select |v_#length_BEFORE_CALL_259| 2)))) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_l3_insert_~list#1.base| |ULTIMATE.start_l3_insert_#in~list#1.base|) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|))))) (= |ULTIMATE.start_l2_insert_~list#1.offset| 0) (= 4 |ULTIMATE.start_l1_insert_#in~list#1.offset|) (= |ULTIMATE.start_l3_insert_~item~1#1.offset| 0))' at error location [2023-12-02 18:55:53,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:55:53,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:55:53,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2023-12-02 18:55:53,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481987854] [2023-12-02 18:55:53,528 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:55:53,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 18:55:53,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:55:53,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 18:55:53,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=2935, Unknown=9, NotChecked=336, Total=3540 [2023-12-02 18:55:53,531 INFO L87 Difference]: Start difference. First operand 207 states and 236 transitions. Second operand has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 29 states have internal predecessors, (57), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 18:55:55,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:55:57,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:56:01,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:56:04,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:56:08,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:56:12,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:56:14,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:56:16,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:56:19,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:56:23,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:56:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:56:38,161 INFO L93 Difference]: Finished difference Result 296 states and 344 transitions. [2023-12-02 18:56:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 18:56:38,161 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 29 states have internal predecessors, (57), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 101 [2023-12-02 18:56:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:56:38,163 INFO L225 Difference]: With dead ends: 296 [2023-12-02 18:56:38,163 INFO L226 Difference]: Without dead ends: 296 [2023-12-02 18:56:38,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 143 SyntacticMatches, 7 SemanticMatches, 72 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 79.0s TimeCoverageRelationStatistics Valid=368, Invalid=4598, Unknown=16, NotChecked=420, Total=5402 [2023-12-02 18:56:38,165 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 170 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 19 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 955 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:56:38,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 863 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 3020 Invalid, 10 Unknown, 955 Unchecked, 23.4s Time] [2023-12-02 18:56:38,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-02 18:56:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 204. [2023-12-02 18:56:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 122 states have (on average 1.7295081967213115) internal successors, (211), 189 states have internal predecessors, (211), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:56:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2023-12-02 18:56:38,171 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 101 [2023-12-02 18:56:38,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:56:38,171 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2023-12-02 18:56:38,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 29 states have internal predecessors, (57), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 18:56:38,171 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2023-12-02 18:56:38,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 18:56:38,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:56:38,172 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:56:38,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 18:56:38,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 18:56:38,373 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:56:38,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:56:38,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1688353545, now seen corresponding path program 1 times [2023-12-02 18:56:38,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:56:38,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008987184] [2023-12-02 18:56:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:56:38,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:56:38,421 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:56:38,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960719819] [2023-12-02 18:56:38,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:56:38,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:56:38,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:56:38,422 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:56:38,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 18:56:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:56:39,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 87 conjunts are in the unsatisfiable core [2023-12-02 18:56:39,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:56:39,950 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 1 [2023-12-02 18:56:50,841 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#valid| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-12-02 18:56:51,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:56:51,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 13 [2023-12-02 18:56:51,135 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 18:56:51,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 16 [2023-12-02 18:56:51,217 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2023-12-02 18:56:51,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:56:51,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 13 [2023-12-02 18:56:51,270 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-02 18:56:51,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-02 18:56:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 582 proven. 253 refuted. 0 times theorem prover too weak. 278 trivial. 378 not checked. [2023-12-02 18:56:52,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:56:52,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:56:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008987184] [2023-12-02 18:56:52,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:56:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960719819] [2023-12-02 18:56:52,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960719819] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:56:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [948046352] [2023-12-02 18:56:52,852 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2023-12-02 18:56:52,852 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:56:52,852 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:56:52,852 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:56:52,852 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:56:53,538 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 15 for LOIs [2023-12-02 18:56:53,697 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:57:20,846 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11081#(and (<= (+ |ULTIMATE.start_l3_insert_~list#1.offset| 4) (select |#length| |ULTIMATE.start_l3_insert_~list#1.base|)) (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (or (< (+ |ULTIMATE.start_l3_insert_~item~1#1.offset| 4) 0) (< (select |#length| |ULTIMATE.start_l3_insert_~item~1#1.base|) (+ |ULTIMATE.start_l3_insert_~item~1#1.offset| 8))) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (exists ((|v_ULTIMATE.start_l4_insert_~list#1.offset_19| Int) (|v_#memory_int_423| (Array Int (Array Int Int))) (|v_#memory_int_422| (Array Int (Array Int Int))) (|v_#memory_int_421| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_462| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_463| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_463| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_462| (Array Int (Array Int Int))) (|v_ULTIMATE.start_l4_insert_~list#1.base_21| Int)) (and (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) 1) (= |v_#memory_$Pointer$.base_463| (store |v_#memory_$Pointer$.base_462| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (store (select |v_#memory_$Pointer$.base_462| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) 4) (select (select |v_#memory_$Pointer$.base_463| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) 4))))) (= |v_#memory_int_423| (store |v_#memory_int_422| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (store (select |v_#memory_int_422| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (select (select |v_#memory_int_423| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|))))) (= (store (store |v_#memory_$Pointer$.base_463| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (store (select |v_#memory_$Pointer$.base_463| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (select (select |v_#memory_$Pointer$.base_463| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|))) |v_ULTIMATE.start_l4_insert_~list#1.base_21| (store (select (store |v_#memory_$Pointer$.base_463| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (store (select |v_#memory_$Pointer$.base_463| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (select (select |v_#memory_$Pointer$.base_463| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|))) |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|))) |#memory_$Pointer$.base|) (= |#memory_$Pointer$.offset| (store (store |v_#memory_$Pointer$.offset_463| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (store (select |v_#memory_$Pointer$.offset_463| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (select (select |v_#memory_$Pointer$.offset_463| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|))) |v_ULTIMATE.start_l4_insert_~list#1.base_21| (store (select (store |v_#memory_$Pointer$.offset_463| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (store (select |v_#memory_$Pointer$.offset_463| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (select (select |v_#memory_$Pointer$.offset_463| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|))) |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)))) (<= 0 |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) 8) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|))) (= (store |v_#memory_int_421| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (store (select |v_#memory_int_421| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) 4) (select (select |v_#memory_int_422| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) 4)))) |v_#memory_int_422|) (= |#memory_int| (store |v_#memory_int_423| |v_ULTIMATE.start_l4_insert_~list#1.base_21| (store (select |v_#memory_int_423| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19| (select (select |#memory_int| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)))) (<= 0 (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (= (store |v_#memory_$Pointer$.offset_462| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (store (select |v_#memory_$Pointer$.offset_462| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) 4) (select (select |v_#memory_$Pointer$.offset_463| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) 4)))) |v_#memory_$Pointer$.offset_463|) (<= (+ 4 |v_ULTIMATE.start_l4_insert_~list#1.offset_19|) (select |#length| |v_ULTIMATE.start_l4_insert_~list#1.base_21|)) (= (select |#valid| |v_ULTIMATE.start_l4_insert_~list#1.base_21|) 1))) (= 3 |~#list~0.base|) (= (select |#valid| |ULTIMATE.start_l3_insert_~list#1.base|) 1) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_l3_insert_~list#1.base|) |ULTIMATE.start_l3_insert_~list#1.offset|) |ULTIMATE.start_l3_insert_#t~mem11#1.base|) (= |ULTIMATE.start_l3_insert_#t~mem11#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_l3_insert_~list#1.base|) |ULTIMATE.start_l3_insert_~list#1.offset|)) (<= 0 |ULTIMATE.start_l3_insert_~list#1.offset|))' at error location [2023-12-02 18:57:20,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:57:20,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:57:20,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2023-12-02 18:57:20,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722286893] [2023-12-02 18:57:20,846 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:57:20,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 18:57:20,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:57:20,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 18:57:20,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1847, Unknown=7, NotChecked=174, Total=2162 [2023-12-02 18:57:20,849 INFO L87 Difference]: Start difference. First operand 204 states and 233 transitions. Second operand has 27 states, 25 states have (on average 2.12) internal successors, (53), 25 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 18:57:22,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:57:24,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:57:26,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:57:29,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:57:31,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:57:33,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:57:35,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:57:37,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:57:39,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:57:44,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:57:46,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 18:57:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:57:51,156 INFO L93 Difference]: Finished difference Result 295 states and 343 transitions. [2023-12-02 18:57:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 18:57:51,156 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.12) internal successors, (53), 25 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 102 [2023-12-02 18:57:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:57:51,158 INFO L225 Difference]: With dead ends: 295 [2023-12-02 18:57:51,159 INFO L226 Difference]: Without dead ends: 295 [2023-12-02 18:57:51,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 160 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 43.0s TimeCoverageRelationStatistics Valid=215, Invalid=2977, Unknown=8, NotChecked=222, Total=3422 [2023-12-02 18:57:51,161 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 123 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 11 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 3598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 634 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:57:51,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 937 Invalid, 3598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2942 Invalid, 11 Unknown, 634 Unchecked, 25.8s Time] [2023-12-02 18:57:51,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-12-02 18:57:51,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 203. [2023-12-02 18:57:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 122 states have (on average 1.721311475409836) internal successors, (210), 188 states have internal predecessors, (210), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:57:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 232 transitions. [2023-12-02 18:57:51,168 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 232 transitions. Word has length 102 [2023-12-02 18:57:51,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:57:51,169 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 232 transitions. [2023-12-02 18:57:51,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.12) internal successors, (53), 25 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-02 18:57:51,169 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 232 transitions. [2023-12-02 18:57:51,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 18:57:51,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:57:51,170 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:57:51,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 18:57:51,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 18:57:51,371 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:57:51,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:57:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash -609975326, now seen corresponding path program 1 times [2023-12-02 18:57:51,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:57:51,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203707114] [2023-12-02 18:57:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:51,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:57:51,425 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:57:51,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931196645] [2023-12-02 18:57:51,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:57:51,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:57:51,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:57:51,426 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:57:51,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 18:57:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:57:51,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 81 conjunts are in the unsatisfiable core [2023-12-02 18:57:51,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:57:52,016 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-02 18:57:52,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2023-12-02 18:57:52,181 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-12-02 18:57:52,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-12-02 18:57:52,294 INFO L349 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-12-02 18:57:52,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 25 [2023-12-02 18:57:52,386 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2023-12-02 18:57:52,424 INFO L349 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2023-12-02 18:57:52,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 31 treesize of output 52 [2023-12-02 18:57:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 512 proven. 424 refuted. 0 times theorem prover too weak. 223 trivial. 332 not checked. [2023-12-02 18:57:52,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:57:52,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:57:52,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203707114] [2023-12-02 18:57:52,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 18:57:52,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931196645] [2023-12-02 18:57:52,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931196645] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:57:52,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [355248596] [2023-12-02 18:57:52,715 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2023-12-02 18:57:52,715 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:57:52,716 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:57:52,716 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:57:52,716 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:57:53,556 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 15 for LOIs [2023-12-02 18:57:53,711 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:58:22,790 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11992#(and (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 3 |~#list~0.base|) (exists ((|v_#memory_int_449| (Array Int (Array Int Int))) (|v_#memory_int_448| (Array Int (Array Int Int))) (|v_#memory_int_447| (Array Int (Array Int Int))) (|v_ULTIMATE.start_l4_insert_~list#1.offset_20| Int) (|v_#memory_int_446| (Array Int (Array Int Int))) (|v_ULTIMATE.start_l4_insert_~list#1.base_22| Int) (|v_#memory_$Pointer$.base_490| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_490| (Array Int (Array Int Int))) (|v_ULTIMATE.start_l3_insert_~list#1.offset_16| Int) (|v_ULTIMATE.start_l3_insert_~list#1.base_18| Int) (|v_#memory_$Pointer$.base_488| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_487| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_487| (Array Int (Array Int Int))) (|v_#memory_int_450| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_488| (Array Int (Array Int Int)))) (and (= (select |#valid| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|)) 1) (= |v_#memory_$Pointer$.offset_488| (store |v_#memory_$Pointer$.offset_487| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (store (select |v_#memory_$Pointer$.offset_487| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (+ (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) 4) (select (select |v_#memory_$Pointer$.offset_488| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (+ (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) 4))))) (= (select |#valid| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) 1) (<= 0 (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) 4)) (= |#memory_$Pointer$.base| (store (store |v_#memory_$Pointer$.base_490| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) (store (select |v_#memory_$Pointer$.base_490| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) 4) (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|))) |v_ULTIMATE.start_l3_insert_~list#1.base_18| (store (select (store |v_#memory_$Pointer$.base_490| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) (store (select |v_#memory_$Pointer$.base_490| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) 4) (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|))) |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|)))) (= |#memory_$Pointer$.offset| (store (store |v_#memory_$Pointer$.offset_490| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) (store (select |v_#memory_$Pointer$.offset_490| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) 4) (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|))) |v_ULTIMATE.start_l3_insert_~list#1.base_18| (store (select (store |v_#memory_$Pointer$.offset_490| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) (store (select |v_#memory_$Pointer$.offset_490| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) 4) (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|))) |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16| (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|)))) (= (store |v_#memory_int_446| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (store (select |v_#memory_int_446| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (+ (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) 4) (select (select |v_#memory_int_447| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (+ (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) 4)))) |v_#memory_int_447|) (<= 0 (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (= (store |v_#memory_int_449| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) (store (select |v_#memory_int_449| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) 4) (select (select |v_#memory_int_450| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|)) (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) 4)))) |v_#memory_int_450|) (<= (+ 4 |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) (select |#length| |v_ULTIMATE.start_l3_insert_~list#1.base_18|)) (= (store |v_#memory_int_447| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (store (select |v_#memory_int_447| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (select (select |v_#memory_int_448| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)))) |v_#memory_int_448|) (<= (+ 4 |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (select |#length| |v_ULTIMATE.start_l4_insert_~list#1.base_22|)) (= |v_#memory_$Pointer$.base_488| (store |v_#memory_$Pointer$.base_487| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (store (select |v_#memory_$Pointer$.base_487| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (+ (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) 4) (select (select |v_#memory_$Pointer$.base_488| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (+ (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) 4))))) (= (store |v_#memory_int_448| |v_ULTIMATE.start_l4_insert_~list#1.base_22| (store (select |v_#memory_int_448| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20| (select (select |v_#memory_int_449| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|))) |v_#memory_int_449|) (= (select |#valid| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) 1) (<= 0 |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (<= 0 |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) (= (select |#valid| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) 1) (= |v_#memory_$Pointer$.offset_490| (store (store |v_#memory_$Pointer$.offset_488| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (store (select |v_#memory_$Pointer$.offset_488| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (select (select |v_#memory_$Pointer$.offset_488| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|))) |v_ULTIMATE.start_l4_insert_~list#1.base_22| (store (select (store |v_#memory_$Pointer$.offset_488| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (store (select |v_#memory_$Pointer$.offset_488| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (select (select |v_#memory_$Pointer$.offset_488| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|))) |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20| (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)))) (= (store (store |v_#memory_$Pointer$.base_488| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (store (select |v_#memory_$Pointer$.base_488| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (select (select |v_#memory_$Pointer$.base_488| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|))) |v_ULTIMATE.start_l4_insert_~list#1.base_22| (store (select (store |v_#memory_$Pointer$.base_488| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (store (select |v_#memory_$Pointer$.base_488| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|)) (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) (select (select |v_#memory_$Pointer$.base_488| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|))) |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|))) |v_#memory_$Pointer$.base_490|) (= |#memory_int| (store |v_#memory_int_450| |v_ULTIMATE.start_l3_insert_~list#1.base_18| (store (select |v_#memory_int_450| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16| (select (select |#memory_int| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|)))) (<= (+ (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|) 8) (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_18|) |v_ULTIMATE.start_l3_insert_~list#1.offset_16|))) (<= (+ (select (select |v_#memory_$Pointer$.offset_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|) 8) (select |#length| (select (select |v_#memory_$Pointer$.base_490| |v_ULTIMATE.start_l4_insert_~list#1.base_22|) |v_ULTIMATE.start_l4_insert_~list#1.offset_20|))))) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_l2_insert_~list#1.base|) 1)))' at error location [2023-12-02 18:58:22,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:58:22,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:58:22,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-12-02 18:58:22,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051944802] [2023-12-02 18:58:22,791 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 18:58:22,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 18:58:22,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:58:22,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 18:58:22,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1903, Unknown=10, NotChecked=88, Total=2162 [2023-12-02 18:58:22,793 INFO L87 Difference]: Start difference. First operand 203 states and 232 transitions. Second operand has 24 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 18:58:23,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:58:23,772 INFO L93 Difference]: Finished difference Result 292 states and 340 transitions. [2023-12-02 18:58:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 18:58:23,772 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 105 [2023-12-02 18:58:23,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:58:23,773 INFO L225 Difference]: With dead ends: 292 [2023-12-02 18:58:23,773 INFO L226 Difference]: Without dead ends: 292 [2023-12-02 18:58:23,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 167 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=211, Invalid=2333, Unknown=10, NotChecked=98, Total=2652 [2023-12-02 18:58:23,775 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 255 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 18:58:23,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1899 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1490 Invalid, 0 Unknown, 315 Unchecked, 0.8s Time] [2023-12-02 18:58:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-02 18:58:23,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 200. [2023-12-02 18:58:23,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 122 states have (on average 1.6967213114754098) internal successors, (207), 185 states have internal predecessors, (207), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 18:58:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 229 transitions. [2023-12-02 18:58:23,781 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 229 transitions. Word has length 105 [2023-12-02 18:58:23,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:58:23,781 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 229 transitions. [2023-12-02 18:58:23,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 18:58:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 229 transitions. [2023-12-02 18:58:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-02 18:58:23,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:58:23,782 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:58:23,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 18:58:23,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 18:58:23,983 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-12-02 18:58:23,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:58:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash -609975325, now seen corresponding path program 1 times [2023-12-02 18:58:23,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:58:23,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220592868] [2023-12-02 18:58:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:58:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:58:24,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 18:58:24,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164386903] [2023-12-02 18:58:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:58:24,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:58:24,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:58:24,035 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:58:24,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1cdfc60-36ef-445a-b5b6-72ecb0fb9e6f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 18:58:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:58:27,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 153 conjunts are in the unsatisfiable core [2023-12-02 18:58:27,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:58:27,167 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 1 [2023-12-02 18:58:37,422 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 18:58:37,422 INFO L378 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 1 case distinctions, treesize of input 18 treesize of output 17 [2023-12-02 18:58:37,560 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-02 18:58:37,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2023-12-02 18:58:40,428 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-12-02 18:58:40,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-12-02 18:58:40,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 13 [2023-12-02 18:58:43,229 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 18:58:43,229 INFO L378 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 1 case distinctions, treesize of input 18 treesize of output 17 [2023-12-02 18:58:45,924 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|zalloc_or_die_calloc_model_~nmemb#1| Int)) (let ((.cse1 (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) (.cse0 (* |zalloc_or_die_calloc_model_~nmemb#1| |zalloc_or_die_calloc_model_~size#1|))) (and (<= (mod .cse0 4294967296) .cse1) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| .cse1) |c_#length|) (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| .cse0)))) is different from true [2023-12-02 18:59:39,993 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 18:59:39,993 INFO L378 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 1 case distinctions, treesize of input 30 treesize of output 29 [2023-12-02 18:59:53,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1491 backedges. 213 proven. 1147 refuted. 0 times theorem prover too weak. 123 trivial. 8 not checked. [2023-12-02 18:59:53,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:00:02,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 19:00:02,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220592868] [2023-12-02 19:00:02,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 19:00:02,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164386903] [2023-12-02 19:00:02,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164386903] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 19:00:02,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1840519223] [2023-12-02 19:00:02,163 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2023-12-02 19:00:02,163 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 19:00:02,164 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 19:00:02,164 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 19:00:02,164 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 19:00:05,244 INFO L197 IcfgInterpreter]: Interpreting procedure zalloc_or_die with input of size 65 for LOIs [2023-12-02 19:00:05,418 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 19:00:24,524 WARN L876 $PredicateComparison]: unable to prove that (and (= 3 |c_ULTIMATE.start_l0_insert_~list#1.base|) (= |c_ULTIMATE.start_l1_insert_#t~ret15#1.offset| 0) (<= 1 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |c_~#list~0.offset| 0) (let ((.cse0 (not (= |c_ULTIMATE.start_l1_insert_#t~ret15#1.base| 0))) (.cse1 (= (select |c_ULTIMATE.start_main_old_#valid#1| 0) 0)) (.cse2 (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_200| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_200| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526| 4294967296))))) (.cse3 (= (select |c_ULTIMATE.start_main_old_#valid#1| 2) 1)) (.cse4 (= |c_ULTIMATE.start_l1_insert_~list#1.base| |c_ULTIMATE.start_l1_insert_#in~list#1.base|)) (.cse5 (not (= |c_ULTIMATE.start_l0_insert_~item~4#1.base| 0))) (.cse6 (= (select |c_ULTIMATE.start_main_old_#valid#1| 1) 1)) (.cse7 (= |c_ULTIMATE.start_l1_insert_#in~list#1.base| |c_ULTIMATE.start_l0_insert_~item~4#1.base|)) (.cse8 (= (select |c_ULTIMATE.start_main_old_#valid#1| 3) 1))) (or (and .cse0 (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_339| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_339| 3) 0) 0)) .cse1 .cse2 .cse3 .cse4 (exists ((|v_#length_BEFORE_CALL_363| (Array Int Int))) (and (= (select |v_#length_BEFORE_CALL_363| 2) 14) (= (select |v_#length_BEFORE_CALL_363| 1) 2) (= (select |v_#length_BEFORE_CALL_363| 3) 4))) .cse5 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_339| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_339| 3) 0) 0)) .cse6 .cse7 .cse8 (exists ((|v_old(#memory_int)_AFTER_CALL_219| (Array Int (Array Int Int)))) (let ((.cse9 (select |v_old(#memory_int)_AFTER_CALL_219| 1))) (and (= (select .cse9 1) 0) (= (select .cse9 0) 48))))) (and (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_337| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_337| 3) 0) 0)) (exists ((|v_#length_BEFORE_CALL_361| (Array Int Int))) (and (= 14 (select |v_#length_BEFORE_CALL_361| 2)) (= (select |v_#length_BEFORE_CALL_361| 3) 4) (= 2 (select |v_#length_BEFORE_CALL_361| 1)))) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (exists ((|v_old(#memory_int)_AFTER_CALL_218| (Array Int (Array Int Int)))) (let ((.cse10 (select |v_old(#memory_int)_AFTER_CALL_218| 1))) (and (= (select .cse10 1) 0) (= (select .cse10 0) 48)))) .cse6 .cse7 .cse8 (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_337| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_337| 3) 0) 0))))) (= |c_ULTIMATE.start_l1_insert_#in~list#1.offset| 4) (= |c_ULTIMATE.start_l0_insert_~list#1.offset| 0) (= |c_ULTIMATE.start_l0_insert_#in~list#1.base| 3) (= 3 |c_~#list~0.base|) (= |c_ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (= |c_ULTIMATE.start_l0_insert_#in~list#1.offset| 0)) is different from true [2023-12-02 19:00:24,531 WARN L876 $PredicateComparison]: unable to prove that (and (= 3 |c_ULTIMATE.start_l0_insert_~list#1.base|) (= |c_ULTIMATE.start_l1_insert_~item~3#1.offset| 0) (<= 1 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |c_~#list~0.offset| 0) (= |c_ULTIMATE.start_l1_insert_#in~list#1.offset| 4) (= |c_ULTIMATE.start_l0_insert_~list#1.offset| 0) (let ((.cse0 (= (select |c_ULTIMATE.start_main_old_#valid#1| 0) 0)) (.cse1 (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_200| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_200| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526| 4294967296))))) (.cse2 (= (select |c_ULTIMATE.start_main_old_#valid#1| 2) 1)) (.cse3 (= |c_ULTIMATE.start_l1_insert_~list#1.base| |c_ULTIMATE.start_l1_insert_#in~list#1.base|)) (.cse4 (not (= |c_ULTIMATE.start_l0_insert_~item~4#1.base| 0))) (.cse5 (not (= |c_ULTIMATE.start_l1_insert_~item~3#1.base| 0))) (.cse6 (= (select |c_ULTIMATE.start_main_old_#valid#1| 1) 1)) (.cse7 (= |c_ULTIMATE.start_l1_insert_#in~list#1.base| |c_ULTIMATE.start_l0_insert_~item~4#1.base|)) (.cse8 (= (select |c_ULTIMATE.start_main_old_#valid#1| 3) 1))) (or (and (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_339| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_339| 3) 0) 0)) .cse0 .cse1 .cse2 .cse3 (exists ((|v_#length_BEFORE_CALL_363| (Array Int Int))) (and (= (select |v_#length_BEFORE_CALL_363| 2) 14) (= (select |v_#length_BEFORE_CALL_363| 1) 2) (= (select |v_#length_BEFORE_CALL_363| 3) 4))) .cse4 .cse5 (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_339| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_339| 3) 0) 0)) .cse6 .cse7 .cse8 (exists ((|v_old(#memory_int)_AFTER_CALL_219| (Array Int (Array Int Int)))) (let ((.cse9 (select |v_old(#memory_int)_AFTER_CALL_219| 1))) (and (= (select .cse9 1) 0) (= (select .cse9 0) 48))))) (and (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_337| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_337| 3) 0) 0)) (exists ((|v_#length_BEFORE_CALL_361| (Array Int Int))) (and (= 14 (select |v_#length_BEFORE_CALL_361| 2)) (= (select |v_#length_BEFORE_CALL_361| 3) 4) (= 2 (select |v_#length_BEFORE_CALL_361| 1)))) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (exists ((|v_old(#memory_int)_AFTER_CALL_218| (Array Int (Array Int Int)))) (let ((.cse10 (select |v_old(#memory_int)_AFTER_CALL_218| 1))) (and (= (select .cse10 1) 0) (= (select .cse10 0) 48)))) .cse6 .cse7 .cse8 (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_337| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_337| 3) 0) 0))))) (= |c_ULTIMATE.start_l0_insert_#in~list#1.base| 3) (= 3 |c_~#list~0.base|) (= |c_ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (= |c_ULTIMATE.start_l0_insert_#in~list#1.offset| 0)) is different from true [2023-12-02 19:02:02,132 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12911#(and (<= 1 |#StackHeapBarrier|) (= |~#list~0.offset| 0) (= |ULTIMATE.start_l0_insert_~list#1.base| 3) (= |ULTIMATE.start_l0_insert_#in~list#1.offset| 0) (= 3 |ULTIMATE.start_l0_insert_#in~list#1.base|) (= 3 |~#list~0.base|) (= |ULTIMATE.start_l1_insert_~list#1.offset| 4) (= |ULTIMATE.start_l0_insert_~list#1.offset| 0) (exists ((|v_#memory_$Pointer$.base_517| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_514| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_515| (Array Int (Array Int Int))) (|v_#memory_int_477| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_514| (Array Int (Array Int Int))) (|v_ULTIMATE.start_l4_insert_~list#1.base_23| Int) (|v_ULTIMATE.start_l4_insert_#in~list#1.base_17| Int) (|v_ULTIMATE.start_l3_insert_#in~list#1.base_11| Int) (|v_#memory_int_474| (Array Int (Array Int Int))) (|v_#memory_int_473| (Array Int (Array Int Int))) (|v_#memory_int_476| (Array Int (Array Int Int))) (|v_ULTIMATE.start_l3_insert_~list#1.base_19| Int) (|v_#memory_int_475| (Array Int (Array Int Int)))) (and (= (store |v_#memory_int_474| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_int_474| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 0 (select (select |v_#memory_int_475| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 0))) |v_#memory_int_475|) (= |#memory_$Pointer$.base| (store (store |v_#memory_$Pointer$.base_517| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4) (store (select |v_#memory_$Pointer$.base_517| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4)) 4 (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4))) |v_ULTIMATE.start_l3_insert_~list#1.base_19| (store (select (store |v_#memory_$Pointer$.base_517| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4) (store (select |v_#memory_$Pointer$.base_517| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4)) 4 (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4))) |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4)))) (<= 8 (select |#length| |v_ULTIMATE.start_l3_insert_~list#1.base_19|)) (= |#memory_$Pointer$.offset| (store (store (store (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23| (store (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0 0)) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4) (store (select (store (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23| (store (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0 0)) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4)) 4 (select (select (store (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23| (store (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0 0)) |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4))) |v_ULTIMATE.start_l3_insert_~list#1.base_19| (store (select (store (store (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23| (store (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0 0)) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4) (store (select (store (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23| (store (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0 0)) (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4)) 4 (select (select (store (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23| (store (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0) 0 (select (select (store |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.offset_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 0)) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0 0)) |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4))) |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4 0))) (= |#memory_int| (store |v_#memory_int_477| |v_ULTIMATE.start_l3_insert_~list#1.base_19| (store (select |v_#memory_int_477| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4 (select (select |#memory_int| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4)))) (or (and (not (= 0 (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_337| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_337| 3) 0) 0)) (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (exists ((|v_#length_BEFORE_CALL_361| (Array Int Int))) (and (= 14 (select |v_#length_BEFORE_CALL_361| 2)) (= (select |v_#length_BEFORE_CALL_361| 3) 4) (= 2 (select |v_#length_BEFORE_CALL_361| 1)))) (= |v_ULTIMATE.start_l4_insert_#in~list#1.base_17| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (not (= (select (select |v_#memory_$Pointer$.base_515| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4) 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_200| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_200| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526| 4294967296)))) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4) 0)) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (= |v_ULTIMATE.start_l4_insert_#in~list#1.base_17| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4)) (= |v_ULTIMATE.start_l3_insert_~list#1.base_19| |v_ULTIMATE.start_l3_insert_#in~list#1.base_11|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_old(#memory_int)_AFTER_CALL_218| (Array Int (Array Int Int)))) (and (= (select (select |v_old(#memory_int)_AFTER_CALL_218| 1) 1) 0) (= (select (select |v_old(#memory_int)_AFTER_CALL_218| 1) 0) 48))) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |v_ULTIMATE.start_l3_insert_#in~list#1.base_11|) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_337| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_337| 3) 0) 0)) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|)) (and (not (= 0 (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) (not (= |ULTIMATE.start_l1_insert_~item~3#1.base| 0)) (= |v_ULTIMATE.start_l4_insert_#in~list#1.base_17| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) (not (= |ULTIMATE.start_l2_insert_~item~2#1.base| 0)) (not (= |ULTIMATE.start_l0_insert_~item~4#1.base| 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (exists ((|v_#memory_$Pointer$.offset_BEFORE_CALL_339| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.offset_BEFORE_CALL_339| 3) 0) 0)) (not (= (select (select |v_#memory_$Pointer$.base_515| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4) 0)) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (exists ((|v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526| Int) (|v_zalloc_or_die_#Ultimate.C_memset_#amount#1_200| Int)) (and (or (= |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526| 0) (< 0 |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526|)) (<= (mod |v_zalloc_or_die_#Ultimate.C_memset_#amount#1_200| 4294967296) (mod |v_zalloc_or_die_#Ultimate.C_memset_#t~loopctr39#1_526| 4294967296)))) (= (select |ULTIMATE.start_main_old_#valid#1| 3) 1) (= |ULTIMATE.start_l0_insert_~item~4#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (not (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4) 0)) (exists ((|v_#length_BEFORE_CALL_363| (Array Int Int))) (and (= (select |v_#length_BEFORE_CALL_363| 2) 14) (= (select |v_#length_BEFORE_CALL_363| 1) 2) (= (select |v_#length_BEFORE_CALL_363| 3) 4))) (= |ULTIMATE.start_l1_insert_~list#1.base| |ULTIMATE.start_l1_insert_#in~list#1.base|) (= |ULTIMATE.start_l2_insert_~list#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (= |v_ULTIMATE.start_l4_insert_#in~list#1.base_17| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4)) (= |v_ULTIMATE.start_l3_insert_~list#1.base_19| |v_ULTIMATE.start_l3_insert_#in~list#1.base_11|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (exists ((|v_#memory_$Pointer$.base_BEFORE_CALL_339| (Array Int (Array Int Int)))) (= (select (select |v_#memory_$Pointer$.base_BEFORE_CALL_339| 3) 0) 0)) (= |ULTIMATE.start_l2_insert_~item~2#1.base| |v_ULTIMATE.start_l3_insert_#in~list#1.base_11|) (= |ULTIMATE.start_l1_insert_~item~3#1.base| |ULTIMATE.start_l2_insert_#in~list#1.base|) (exists ((|v_old(#memory_int)_AFTER_CALL_219| (Array Int (Array Int Int)))) (and (= (select (select |v_old(#memory_int)_AFTER_CALL_219| 1) 1) 0) (= (select (select |v_old(#memory_int)_AFTER_CALL_219| 1) 0) 48))))) (= (select |#valid| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 1) (= (store |v_#memory_int_475| |v_ULTIMATE.start_l4_insert_~list#1.base_23| (store (select |v_#memory_int_475| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0 (select (select |v_#memory_int_476| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_#memory_int_476|) (= (store (store |v_#memory_$Pointer$.base_515| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.base_515| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 0 (select (select |v_#memory_$Pointer$.base_515| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23| (store (select (store |v_#memory_$Pointer$.base_515| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.base_515| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 0 (select (select |v_#memory_$Pointer$.base_515| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0 (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) |v_#memory_$Pointer$.base_517|) (= (store |v_#memory_int_476| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4) (store (select |v_#memory_int_476| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4)) 4 (select (select |v_#memory_int_477| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4)) 4))) |v_#memory_int_477|) (<= 8 (select |#length| (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_l3_insert_~list#1.base_19|) 4))) (= (select |#valid| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 1) (= (store |v_#memory_int_473| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_int_473| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 (select (select |v_#memory_int_474| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4))) |v_#memory_int_474|) (<= 8 (select |#length| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0))) (= (select |#valid| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 1) (= (store |v_#memory_$Pointer$.base_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0) (store (select |v_#memory_$Pointer$.base_514| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4 (select (select |v_#memory_$Pointer$.base_515| (select (select |v_#memory_$Pointer$.base_517| |v_ULTIMATE.start_l4_insert_~list#1.base_23|) 0)) 4))) |v_#memory_$Pointer$.base_515|))) (= |ULTIMATE.start_l2_insert_#in~list#1.offset| 0) (= |ULTIMATE.start_l0_insert_~item~4#1.offset| 0) (= |ULTIMATE.start_l1_insert_~item~3#1.offset| 0) (= |ULTIMATE.start_l2_insert_~item~2#1.offset| 0) (= |ULTIMATE.start_l2_insert_~list#1.offset| 0) (= 4 |ULTIMATE.start_l1_insert_#in~list#1.offset|) (<= (select |#length| |ULTIMATE.start_l2_insert_~list#1.base|) 3))' at error location [2023-12-02 19:02:02,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 19:02:02,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-02 19:02:02,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2023-12-02 19:02:02,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381179569] [2023-12-02 19:02:02,133 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-02 19:02:02,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-02 19:02:02,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 19:02:02,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-02 19:02:02,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=5445, Unknown=85, NotChecked=456, Total=6320 [2023-12-02 19:02:02,136 INFO L87 Difference]: Start difference. First operand 200 states and 229 transitions. Second operand has 46 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 39 states have internal predecessors, (68), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2023-12-02 19:02:04,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:06,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:08,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:14,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:16,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:23,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:25,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:31,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:33,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:40,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:42,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:48,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:50,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:56,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:02:59,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:03:05,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:03:07,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:03:30,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:03:38,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:03:40,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:03:42,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:03:44,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:03:51,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:03:56,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:03:59,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:05,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:08,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:10,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:12,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:18,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:24,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:26,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:28,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:35,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:37,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:39,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:46,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:48,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:51,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:53,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:55,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:04:58,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:00,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:02,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:05,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:07,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:09,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:12,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:14,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:16,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:19,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:21,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:24,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:26,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:29,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:31,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:33,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:36,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:38,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:41,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:43,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:45,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:47,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:49,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:52,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:54,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:56,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:05:58,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:06:00,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:06:02,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:06:05,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:06:07,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:06:09,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:06:12,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:06:14,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:06:16,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:06:19,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:06:21,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-12-02 19:06:23,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]