./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:30:27,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:30:27,359 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:30:27,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:30:27,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:30:27,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:30:27,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:30:27,408 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:30:27,409 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:30:27,414 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:30:27,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:30:27,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:30:27,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:30:27,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:30:27,419 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:30:27,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:30:27,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:30:27,420 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:30:27,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:30:27,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:30:27,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:30:27,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:30:27,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:30:27,423 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:30:27,423 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:30:27,424 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:30:27,424 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:30:27,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:30:27,425 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:30:27,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:30:27,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:30:27,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:30:27,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:30:27,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:30:27,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:30:27,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:30:27,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:30:27,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:30:27,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:30:27,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:30:27,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:30:27,430 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:30:27,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:30:27,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:30:27,431 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 [2023-11-23 22:30:27,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:30:27,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:30:27,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:30:27,777 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:30:27,777 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:30:27,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2023-11-23 22:30:30,894 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:30:31,302 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:30:31,303 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2023-11-23 22:30:31,322 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/data/76872b04c/fc7f4b7a564f45d99c265ae297a7872a/FLAG787ae35b4 [2023-11-23 22:30:31,338 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/data/76872b04c/fc7f4b7a564f45d99c265ae297a7872a [2023-11-23 22:30:31,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:30:31,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:30:31,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:30:31,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:30:31,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:30:31,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:30:31" (1/1) ... [2023-11-23 22:30:31,351 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3292249f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:31, skipping insertion in model container [2023-11-23 22:30:31,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:30:31" (1/1) ... [2023-11-23 22:30:31,443 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:30:32,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:30:32,391 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:30:32,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:30:32,588 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:30:32,596 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:30:32,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32 WrapperNode [2023-11-23 22:30:32,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:30:32,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:30:32,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:30:32,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:30:32,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (1/1) ... [2023-11-23 22:30:32,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (1/1) ... [2023-11-23 22:30:32,736 INFO L138 Inliner]: procedures = 282, calls = 298, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1383 [2023-11-23 22:30:32,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:30:32,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:30:32,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:30:32,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:30:32,748 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (1/1) ... [2023-11-23 22:30:32,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (1/1) ... [2023-11-23 22:30:32,764 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (1/1) ... [2023-11-23 22:30:32,913 INFO L189 HeapSplitter]: Split 261 memory accesses to 5 slices as follows [2, 2, 34, 5, 218] [2023-11-23 22:30:32,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (1/1) ... [2023-11-23 22:30:32,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (1/1) ... [2023-11-23 22:30:32,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (1/1) ... [2023-11-23 22:30:33,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (1/1) ... [2023-11-23 22:30:33,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (1/1) ... [2023-11-23 22:30:33,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (1/1) ... [2023-11-23 22:30:33,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:30:33,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:30:33,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:30:33,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:30:33,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (1/1) ... [2023-11-23 22:30:33,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:30:33,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:33,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:30:33,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:30:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 22:30:33,117 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 22:30:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:30:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 22:30:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 22:30:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 22:30:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 22:30:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 22:30:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 22:30:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:30:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-23 22:30:33,119 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-23 22:30:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:30:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:30:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:30:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:30:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:30:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 22:30:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 22:30:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:30:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:30:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:30:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:30:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:30:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:30:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:30:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-23 22:30:33,122 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-23 22:30:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 22:30:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 22:30:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 22:30:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 22:30:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 22:30:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-23 22:30:33,124 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-23 22:30:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:30:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:30:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:30:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:30:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:30:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:30:33,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:30:33,390 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:30:33,392 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:30:34,850 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:30:34,905 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:30:34,905 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-23 22:30:34,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:30:34 BoogieIcfgContainer [2023-11-23 22:30:34,906 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:30:34,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:30:34,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:30:34,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:30:34,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:30:31" (1/3) ... [2023-11-23 22:30:34,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79762a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:30:34, skipping insertion in model container [2023-11-23 22:30:34,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:30:32" (2/3) ... [2023-11-23 22:30:34,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79762a88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:30:34, skipping insertion in model container [2023-11-23 22:30:34,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:30:34" (3/3) ... [2023-11-23 22:30:34,916 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-1.i [2023-11-23 22:30:34,935 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:30:34,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-23 22:30:35,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:30:35,007 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@756faa78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:30:35,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-11-23 22:30:35,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 373 states have (on average 1.6916890080428955) internal successors, (631), 390 states have internal predecessors, (631), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 22:30:35,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 22:30:35,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:35,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 22:30:35,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:35,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:35,031 INFO L85 PathProgramCache]: Analyzing trace with hash -595235965, now seen corresponding path program 1 times [2023-11-23 22:30:35,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:35,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401502889] [2023-11-23 22:30:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:35,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:35,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:35,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401502889] [2023-11-23 22:30:35,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-23 22:30:35,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18616570] [2023-11-23 22:30:35,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:35,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:35,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:35,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:35,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:30:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:35,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 22:30:35,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:35,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:35,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18616570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:35,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:35,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:35,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050387567] [2023-11-23 22:30:35,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:35,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:30:35,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:30:35,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:30:35,496 INFO L87 Difference]: Start difference. First operand has 410 states, 373 states have (on average 1.6916890080428955) internal successors, (631), 390 states have internal predecessors, (631), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-23 22:30:35,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:35,642 INFO L93 Difference]: Finished difference Result 814 states and 1338 transitions. [2023-11-23 22:30:35,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:30:35,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-11-23 22:30:35,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:35,662 INFO L225 Difference]: With dead ends: 814 [2023-11-23 22:30:35,663 INFO L226 Difference]: Without dead ends: 393 [2023-11-23 22:30:35,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:30:35,674 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:35,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 581 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:30:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-11-23 22:30:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2023-11-23 22:30:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 365 states have (on average 1.5095890410958903) internal successors, (551), 379 states have internal predecessors, (551), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 22:30:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 571 transitions. [2023-11-23 22:30:35,777 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 571 transitions. Word has length 6 [2023-11-23 22:30:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:35,779 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 571 transitions. [2023-11-23 22:30:35,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-23 22:30:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 571 transitions. [2023-11-23 22:30:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 22:30:35,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:35,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 22:30:35,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:36,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 22:30:36,001 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:36,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:36,001 INFO L85 PathProgramCache]: Analyzing trace with hash -595234043, now seen corresponding path program 1 times [2023-11-23 22:30:36,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:36,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356363124] [2023-11-23 22:30:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:36,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:36,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:36,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226460416] [2023-11-23 22:30:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:36,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:36,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:36,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:36,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:30:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:36,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 22:30:36,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:36,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 22:30:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:36,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:36,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:36,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356363124] [2023-11-23 22:30:36,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:36,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226460416] [2023-11-23 22:30:36,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226460416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:36,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:36,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:36,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156521518] [2023-11-23 22:30:36,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:36,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:36,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:36,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:36,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:36,412 INFO L87 Difference]: Start difference. First operand 393 states and 571 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-23 22:30:36,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:36,643 INFO L93 Difference]: Finished difference Result 714 states and 1054 transitions. [2023-11-23 22:30:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:36,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-23 22:30:36,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:36,653 INFO L225 Difference]: With dead ends: 714 [2023-11-23 22:30:36,653 INFO L226 Difference]: Without dead ends: 712 [2023-11-23 22:30:36,655 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 [2023-11-23 22:30:36,657 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 468 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:36,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1614 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:30:36,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2023-11-23 22:30:36,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 399. [2023-11-23 22:30:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 371 states have (on average 1.5040431266846361) internal successors, (558), 385 states have internal predecessors, (558), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 22:30:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 578 transitions. [2023-11-23 22:30:36,708 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 578 transitions. Word has length 6 [2023-11-23 22:30:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:36,708 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 578 transitions. [2023-11-23 22:30:36,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-23 22:30:36,709 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 578 transitions. [2023-11-23 22:30:36,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 22:30:36,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:36,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:36,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:36,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:36,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:36,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:36,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1582256787, now seen corresponding path program 1 times [2023-11-23 22:30:36,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:36,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462524938] [2023-11-23 22:30:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:36,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:36,989 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:36,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907704646] [2023-11-23 22:30:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:36,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:36,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:36,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:37,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:30:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:37,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:30:37,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:37,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:37,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:37,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462524938] [2023-11-23 22:30:37,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:37,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907704646] [2023-11-23 22:30:37,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907704646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:37,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:37,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:37,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676486889] [2023-11-23 22:30:37,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:37,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:37,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:37,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:37,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:37,300 INFO L87 Difference]: Start difference. First operand 399 states and 578 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-11-23 22:30:37,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:37,445 INFO L93 Difference]: Finished difference Result 812 states and 1179 transitions. [2023-11-23 22:30:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:37,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 62 [2023-11-23 22:30:37,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:37,449 INFO L225 Difference]: With dead ends: 812 [2023-11-23 22:30:37,450 INFO L226 Difference]: Without dead ends: 420 [2023-11-23 22:30:37,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:37,453 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 9 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:37,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1074 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:30:37,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-11-23 22:30:37,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 419. [2023-11-23 22:30:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 391 states have (on average 1.4782608695652173) internal successors, (578), 405 states have internal predecessors, (578), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 22:30:37,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 598 transitions. [2023-11-23 22:30:37,473 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 598 transitions. Word has length 62 [2023-11-23 22:30:37,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:37,474 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 598 transitions. [2023-11-23 22:30:37,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-11-23 22:30:37,474 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 598 transitions. [2023-11-23 22:30:37,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 22:30:37,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:37,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:37,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:37,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:37,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:37,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:37,693 INFO L85 PathProgramCache]: Analyzing trace with hash -663322667, now seen corresponding path program 1 times [2023-11-23 22:30:37,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:37,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726865589] [2023-11-23 22:30:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:37,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:37,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:37,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125992987] [2023-11-23 22:30:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:37,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:37,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:37,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:37,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:30:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:37,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:30:37,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:38,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:38,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726865589] [2023-11-23 22:30:38,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125992987] [2023-11-23 22:30:38,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125992987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:38,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:38,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:30:38,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255979704] [2023-11-23 22:30:38,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:38,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:38,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:38,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:38,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:38,014 INFO L87 Difference]: Start difference. First operand 419 states and 598 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-11-23 22:30:38,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:38,169 INFO L93 Difference]: Finished difference Result 818 states and 1175 transitions. [2023-11-23 22:30:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:38,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 62 [2023-11-23 22:30:38,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:38,177 INFO L225 Difference]: With dead ends: 818 [2023-11-23 22:30:38,177 INFO L226 Difference]: Without dead ends: 406 [2023-11-23 22:30:38,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:30:38,180 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 165 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:38,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1459 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:30:38,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-23 22:30:38,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 405. [2023-11-23 22:30:38,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 377 states have (on average 1.4774535809018567) internal successors, (557), 391 states have internal predecessors, (557), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 22:30:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 577 transitions. [2023-11-23 22:30:38,204 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 577 transitions. Word has length 62 [2023-11-23 22:30:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:38,204 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 577 transitions. [2023-11-23 22:30:38,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-11-23 22:30:38,205 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 577 transitions. [2023-11-23 22:30:38,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 22:30:38,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:38,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:38,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:38,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:38,425 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:38,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:38,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1479376121, now seen corresponding path program 1 times [2023-11-23 22:30:38,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:38,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258947580] [2023-11-23 22:30:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:38,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:38,482 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:38,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381198531] [2023-11-23 22:30:38,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:38,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:38,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:38,488 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:38,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:30:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:38,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:30:38,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:38,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:38,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:38,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258947580] [2023-11-23 22:30:38,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:38,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381198531] [2023-11-23 22:30:38,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381198531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:38,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:38,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:38,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218024123] [2023-11-23 22:30:38,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:38,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:38,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:38,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:38,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:38,861 INFO L87 Difference]: Start difference. First operand 405 states and 577 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-11-23 22:30:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:38,968 INFO L93 Difference]: Finished difference Result 785 states and 1130 transitions. [2023-11-23 22:30:38,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:30:38,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 62 [2023-11-23 22:30:38,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:38,976 INFO L225 Difference]: With dead ends: 785 [2023-11-23 22:30:38,976 INFO L226 Difference]: Without dead ends: 783 [2023-11-23 22:30:38,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:30:38,985 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 489 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:38,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1639 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:30:38,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-11-23 22:30:39,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 771. [2023-11-23 22:30:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 733 states have (on average 1.4829467939972716) internal successors, (1087), 748 states have internal predecessors, (1087), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (21), 16 states have call predecessors, (21), 18 states have call successors, (21) [2023-11-23 22:30:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1126 transitions. [2023-11-23 22:30:39,022 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1126 transitions. Word has length 62 [2023-11-23 22:30:39,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:39,024 INFO L495 AbstractCegarLoop]: Abstraction has 771 states and 1126 transitions. [2023-11-23 22:30:39,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2023-11-23 22:30:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1126 transitions. [2023-11-23 22:30:39,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-23 22:30:39,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:39,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:39,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:39,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:39,247 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:39,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:39,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1383980546, now seen corresponding path program 1 times [2023-11-23 22:30:39,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:39,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543889929] [2023-11-23 22:30:39,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:39,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:39,278 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:39,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086510797] [2023-11-23 22:30:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:39,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:39,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:39,280 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:39,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 22:30:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:39,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:30:39,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:39,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:39,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:39,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543889929] [2023-11-23 22:30:39,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:39,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086510797] [2023-11-23 22:30:39,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086510797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:39,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:39,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:39,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863698868] [2023-11-23 22:30:39,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:39,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:39,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:39,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:39,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:39,663 INFO L87 Difference]: Start difference. First operand 771 states and 1126 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-23 22:30:39,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:39,756 INFO L93 Difference]: Finished difference Result 1279 states and 1879 transitions. [2023-11-23 22:30:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:30:39,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 63 [2023-11-23 22:30:39,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:39,765 INFO L225 Difference]: With dead ends: 1279 [2023-11-23 22:30:39,765 INFO L226 Difference]: Without dead ends: 1277 [2023-11-23 22:30:39,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:30:39,767 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 422 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:39,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1649 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:30:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-11-23 22:30:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1269. [2023-11-23 22:30:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1225 states have (on average 1.4922448979591836) internal successors, (1828), 1241 states have internal predecessors, (1828), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-23 22:30:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1877 transitions. [2023-11-23 22:30:39,815 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1877 transitions. Word has length 63 [2023-11-23 22:30:39,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:39,816 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1877 transitions. [2023-11-23 22:30:39,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-23 22:30:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1877 transitions. [2023-11-23 22:30:39,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 22:30:39,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:39,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:39,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:40,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 22:30:40,041 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:40,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:40,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1493724209, now seen corresponding path program 1 times [2023-11-23 22:30:40,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:40,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446466232] [2023-11-23 22:30:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:40,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:40,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:40,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446466232] [2023-11-23 22:30:40,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446466232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:40,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:40,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:40,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253460605] [2023-11-23 22:30:40,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:40,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:30:40,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:40,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:30:40,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:30:40,702 INFO L87 Difference]: Start difference. First operand 1269 states and 1877 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-23 22:30:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:40,878 INFO L93 Difference]: Finished difference Result 2285 states and 3406 transitions. [2023-11-23 22:30:40,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:30:40,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2023-11-23 22:30:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:40,891 INFO L225 Difference]: With dead ends: 2285 [2023-11-23 22:30:40,892 INFO L226 Difference]: Without dead ends: 1932 [2023-11-23 22:30:40,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:30:40,894 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 462 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:40,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1603 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:30:40,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2023-11-23 22:30:40,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1269. [2023-11-23 22:30:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1225 states have (on average 1.4914285714285713) internal successors, (1827), 1241 states have internal predecessors, (1827), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-23 22:30:40,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1876 transitions. [2023-11-23 22:30:40,954 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1876 transitions. Word has length 69 [2023-11-23 22:30:40,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:40,955 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1876 transitions. [2023-11-23 22:30:40,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-23 22:30:40,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1876 transitions. [2023-11-23 22:30:40,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-23 22:30:40,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:40,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:40,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:30:40,961 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:40,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:40,961 INFO L85 PathProgramCache]: Analyzing trace with hash 602276963, now seen corresponding path program 1 times [2023-11-23 22:30:40,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:40,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877438740] [2023-11-23 22:30:40,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:40,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:41,003 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:41,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517464045] [2023-11-23 22:30:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:41,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:41,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:41,005 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:41,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 22:30:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:41,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:30:41,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:41,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:41,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:41,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877438740] [2023-11-23 22:30:41,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:41,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517464045] [2023-11-23 22:30:41,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517464045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:41,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:41,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:30:41,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601940049] [2023-11-23 22:30:41,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:41,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:41,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:41,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:41,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:41,377 INFO L87 Difference]: Start difference. First operand 1269 states and 1876 transitions. Second operand has 3 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:41,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:41,464 INFO L93 Difference]: Finished difference Result 1269 states and 1876 transitions. [2023-11-23 22:30:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:41,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-11-23 22:30:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:41,474 INFO L225 Difference]: With dead ends: 1269 [2023-11-23 22:30:41,475 INFO L226 Difference]: Without dead ends: 1268 [2023-11-23 22:30:41,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:41,477 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 492 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:41,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 553 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:30:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2023-11-23 22:30:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1268. [2023-11-23 22:30:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1225 states have (on average 1.489795918367347) internal successors, (1825), 1240 states have internal predecessors, (1825), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2023-11-23 22:30:41,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1874 transitions. [2023-11-23 22:30:41,531 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1874 transitions. Word has length 71 [2023-11-23 22:30:41,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:41,531 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 1874 transitions. [2023-11-23 22:30:41,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1874 transitions. [2023-11-23 22:30:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-23 22:30:41,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:41,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:41,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:41,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:41,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:41,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:41,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1490716738, now seen corresponding path program 1 times [2023-11-23 22:30:41,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:41,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367975268] [2023-11-23 22:30:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:41,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:41,781 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:41,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220765093] [2023-11-23 22:30:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:41,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:41,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:41,783 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:41,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 22:30:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:42,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:30:42,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:42,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:42,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367975268] [2023-11-23 22:30:42,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220765093] [2023-11-23 22:30:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220765093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:42,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:42,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:30:42,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675191682] [2023-11-23 22:30:42,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:42,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:42,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:42,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:42,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:42,170 INFO L87 Difference]: Start difference. First operand 1268 states and 1874 transitions. Second operand has 3 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:42,233 INFO L93 Difference]: Finished difference Result 1295 states and 1894 transitions. [2023-11-23 22:30:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:42,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-11-23 22:30:42,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:42,242 INFO L225 Difference]: With dead ends: 1295 [2023-11-23 22:30:42,243 INFO L226 Difference]: Without dead ends: 1294 [2023-11-23 22:30:42,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:42,246 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 431 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:42,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1107 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:30:42,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2023-11-23 22:30:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1285. [2023-11-23 22:30:42,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1237 states have (on average 1.4858528698464026) internal successors, (1838), 1253 states have internal predecessors, (1838), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2023-11-23 22:30:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1893 transitions. [2023-11-23 22:30:42,316 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1893 transitions. Word has length 72 [2023-11-23 22:30:42,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:42,318 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1893 transitions. [2023-11-23 22:30:42,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:30:42,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1893 transitions. [2023-11-23 22:30:42,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 22:30:42,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:42,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:42,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:42,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:42,542 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:42,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:42,543 INFO L85 PathProgramCache]: Analyzing trace with hash -179740024, now seen corresponding path program 1 times [2023-11-23 22:30:42,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:42,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4072594] [2023-11-23 22:30:42,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:42,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:42,585 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:42,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086960881] [2023-11-23 22:30:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:42,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:42,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:42,587 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:42,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 22:30:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:42,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 22:30:42,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:43,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:43,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:30:43,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:43,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:43,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4072594] [2023-11-23 22:30:43,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:43,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086960881] [2023-11-23 22:30:43,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086960881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:30:43,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:30:43,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2023-11-23 22:30:43,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007723601] [2023-11-23 22:30:43,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:30:43,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 22:30:43,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:43,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 22:30:43,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:30:43,348 INFO L87 Difference]: Start difference. First operand 1285 states and 1893 transitions. Second operand has 14 states, 13 states have (on average 11.384615384615385) internal successors, (148), 12 states have internal predecessors, (148), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:30:44,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:44,328 INFO L93 Difference]: Finished difference Result 3188 states and 4686 transitions. [2023-11-23 22:30:44,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 22:30:44,329 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 11.384615384615385) internal successors, (148), 12 states have internal predecessors, (148), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 79 [2023-11-23 22:30:44,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:44,351 INFO L225 Difference]: With dead ends: 3188 [2023-11-23 22:30:44,352 INFO L226 Difference]: Without dead ends: 3186 [2023-11-23 22:30:44,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=557, Unknown=0, NotChecked=0, Total=812 [2023-11-23 22:30:44,354 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 4311 mSDsluCounter, 4756 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4318 SdHoareTripleChecker+Valid, 5335 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:44,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4318 Valid, 5335 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 22:30:44,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2023-11-23 22:30:44,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 2936. [2023-11-23 22:30:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2838 states have (on average 1.4823819591261451) internal successors, (4207), 2856 states have internal predecessors, (4207), 65 states have call successors, (65), 26 states have call predecessors, (65), 20 states have return successors, (86), 54 states have call predecessors, (86), 65 states have call successors, (86) [2023-11-23 22:30:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 4358 transitions. [2023-11-23 22:30:44,489 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 4358 transitions. Word has length 79 [2023-11-23 22:30:44,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:44,490 INFO L495 AbstractCegarLoop]: Abstraction has 2936 states and 4358 transitions. [2023-11-23 22:30:44,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 11.384615384615385) internal successors, (148), 12 states have internal predecessors, (148), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 22:30:44,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 4358 transitions. [2023-11-23 22:30:44,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 22:30:44,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:44,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:44,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:44,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 22:30:44,714 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:44,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:44,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1135681678, now seen corresponding path program 1 times [2023-11-23 22:30:44,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:44,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172510445] [2023-11-23 22:30:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:44,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:44,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:44,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703036363] [2023-11-23 22:30:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:44,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:44,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:44,770 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:44,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 22:30:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:45,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:30:45,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:45,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:45,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:45,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172510445] [2023-11-23 22:30:45,363 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:45,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703036363] [2023-11-23 22:30:45,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703036363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:45,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:45,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:30:45,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205979036] [2023-11-23 22:30:45,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:45,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:30:45,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:45,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:30:45,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:45,366 INFO L87 Difference]: Start difference. First operand 2936 states and 4358 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2023-11-23 22:30:45,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:45,599 INFO L93 Difference]: Finished difference Result 6364 states and 9496 transitions. [2023-11-23 22:30:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:30:45,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 80 [2023-11-23 22:30:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:45,649 INFO L225 Difference]: With dead ends: 6364 [2023-11-23 22:30:45,649 INFO L226 Difference]: Without dead ends: 3435 [2023-11-23 22:30:45,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:30:45,655 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 345 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:45,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1243 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:30:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2023-11-23 22:30:45,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3412. [2023-11-23 22:30:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3320 states have (on average 1.4960843373493975) internal successors, (4967), 3337 states have internal predecessors, (4967), 60 states have call successors, (60), 24 states have call predecessors, (60), 19 states have return successors, (81), 51 states have call predecessors, (81), 60 states have call successors, (81) [2023-11-23 22:30:45,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 5108 transitions. [2023-11-23 22:30:45,792 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 5108 transitions. Word has length 80 [2023-11-23 22:30:45,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:45,793 INFO L495 AbstractCegarLoop]: Abstraction has 3412 states and 5108 transitions. [2023-11-23 22:30:45,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2023-11-23 22:30:45,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 5108 transitions. [2023-11-23 22:30:45,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 22:30:45,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:45,795 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:45,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:46,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:46,009 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:46,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1254556124, now seen corresponding path program 1 times [2023-11-23 22:30:46,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:46,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274415003] [2023-11-23 22:30:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:46,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:46,051 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:46,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169124959] [2023-11-23 22:30:46,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:46,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:46,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:46,053 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:46,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 22:30:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:46,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 22:30:46,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:46,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:30:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 22:30:46,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:46,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274415003] [2023-11-23 22:30:46,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:46,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169124959] [2023-11-23 22:30:46,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169124959] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:30:46,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:30:46,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-23 22:30:46,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47507665] [2023-11-23 22:30:46,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:30:46,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 22:30:46,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:46,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 22:30:46,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:30:46,773 INFO L87 Difference]: Start difference. First operand 3412 states and 5108 transitions. Second operand has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 10 states have internal predecessors, (157), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-23 22:30:47,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:47,407 INFO L93 Difference]: Finished difference Result 6168 states and 9214 transitions. [2023-11-23 22:30:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 22:30:47,408 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 10 states have internal predecessors, (157), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 88 [2023-11-23 22:30:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:47,443 INFO L225 Difference]: With dead ends: 6168 [2023-11-23 22:30:47,444 INFO L226 Difference]: Without dead ends: 6167 [2023-11-23 22:30:47,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2023-11-23 22:30:47,447 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 1358 mSDsluCounter, 3127 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 3653 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:47,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 3653 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 22:30:47,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6167 states. [2023-11-23 22:30:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6167 to 5514. [2023-11-23 22:30:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 5358 states have (on average 1.492161254199328) internal successors, (7995), 5375 states have internal predecessors, (7995), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2023-11-23 22:30:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 8232 transitions. [2023-11-23 22:30:47,698 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 8232 transitions. Word has length 88 [2023-11-23 22:30:47,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:47,699 INFO L495 AbstractCegarLoop]: Abstraction has 5514 states and 8232 transitions. [2023-11-23 22:30:47,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 17.444444444444443) internal successors, (157), 10 states have internal predecessors, (157), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-23 22:30:47,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 8232 transitions. [2023-11-23 22:30:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 22:30:47,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:47,702 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:47,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:47,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:47,917 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:47,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:47,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1920423258, now seen corresponding path program 1 times [2023-11-23 22:30:47,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:47,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558343842] [2023-11-23 22:30:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:47,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:47,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:47,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385080244] [2023-11-23 22:30:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:47,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:47,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:47,970 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:47,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 22:30:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:48,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 22:30:48,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:48,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 22:30:48,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 22:30:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 22:30:48,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:48,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:48,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558343842] [2023-11-23 22:30:48,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:48,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385080244] [2023-11-23 22:30:48,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385080244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:48,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:48,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:48,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775076968] [2023-11-23 22:30:48,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:48,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:30:48,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:48,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:30:48,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:30:48,643 INFO L87 Difference]: Start difference. First operand 5514 states and 8232 transitions. Second operand has 5 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 22:30:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:49,046 INFO L93 Difference]: Finished difference Result 7342 states and 10982 transitions. [2023-11-23 22:30:49,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:30:49,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 112 [2023-11-23 22:30:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:49,084 INFO L225 Difference]: With dead ends: 7342 [2023-11-23 22:30:49,084 INFO L226 Difference]: Without dead ends: 7341 [2023-11-23 22:30:49,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:30:49,087 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 448 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:49,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1765 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:30:49,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7341 states. [2023-11-23 22:30:49,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7341 to 5513. [2023-11-23 22:30:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5513 states, 5358 states have (on average 1.4901082493467712) internal successors, (7984), 5374 states have internal predecessors, (7984), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2023-11-23 22:30:49,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5513 states to 5513 states and 8221 transitions. [2023-11-23 22:30:49,305 INFO L78 Accepts]: Start accepts. Automaton has 5513 states and 8221 transitions. Word has length 112 [2023-11-23 22:30:49,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:49,306 INFO L495 AbstractCegarLoop]: Abstraction has 5513 states and 8221 transitions. [2023-11-23 22:30:49,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 22:30:49,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5513 states and 8221 transitions. [2023-11-23 22:30:49,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 22:30:49,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:49,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:49,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:49,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 22:30:49,530 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:49,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:49,530 INFO L85 PathProgramCache]: Analyzing trace with hash -596420328, now seen corresponding path program 1 times [2023-11-23 22:30:49,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:49,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313923666] [2023-11-23 22:30:49,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:49,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:49,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:49,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558452296] [2023-11-23 22:30:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:49,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:49,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:49,586 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:49,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 22:30:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:50,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 22:30:50,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:50,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 22:30:50,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 22:30:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 22:30:50,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:50,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:50,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313923666] [2023-11-23 22:30:50,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:50,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558452296] [2023-11-23 22:30:50,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558452296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:50,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:50,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:30:50,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687634247] [2023-11-23 22:30:50,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:50,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:30:50,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:50,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:30:50,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:30:50,300 INFO L87 Difference]: Start difference. First operand 5513 states and 8221 transitions. Second operand has 5 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 22:30:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:50,705 INFO L93 Difference]: Finished difference Result 7475 states and 11151 transitions. [2023-11-23 22:30:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:30:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 113 [2023-11-23 22:30:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:50,726 INFO L225 Difference]: With dead ends: 7475 [2023-11-23 22:30:50,726 INFO L226 Difference]: Without dead ends: 7474 [2023-11-23 22:30:50,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:30:50,731 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 439 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:50,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 2022 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:30:50,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2023-11-23 22:30:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 5646. [2023-11-23 22:30:50,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5484 states have (on average 1.4850474106491611) internal successors, (8144), 5500 states have internal predecessors, (8144), 109 states have call successors, (109), 51 states have call predecessors, (109), 41 states have return successors, (144), 95 states have call predecessors, (144), 109 states have call successors, (144) [2023-11-23 22:30:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 8397 transitions. [2023-11-23 22:30:51,019 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 8397 transitions. Word has length 113 [2023-11-23 22:30:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:51,019 INFO L495 AbstractCegarLoop]: Abstraction has 5646 states and 8397 transitions. [2023-11-23 22:30:51,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 22:30:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 8397 transitions. [2023-11-23 22:30:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 22:30:51,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:51,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:51,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:51,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 22:30:51,247 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:51,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:51,247 INFO L85 PathProgramCache]: Analyzing trace with hash 54722470, now seen corresponding path program 1 times [2023-11-23 22:30:51,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:51,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120546205] [2023-11-23 22:30:51,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:51,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:51,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:51,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513417422] [2023-11-23 22:30:51,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:51,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:51,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:51,303 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:51,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 22:30:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:51,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 22:30:51,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:30:51,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:51,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:51,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120546205] [2023-11-23 22:30:51,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:51,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513417422] [2023-11-23 22:30:51,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513417422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:51,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:51,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:30:51,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799835154] [2023-11-23 22:30:51,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:51,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:30:51,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:51,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:30:51,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:30:51,915 INFO L87 Difference]: Start difference. First operand 5646 states and 8397 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 22:30:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:52,315 INFO L93 Difference]: Finished difference Result 11160 states and 16602 transitions. [2023-11-23 22:30:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 22:30:52,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 118 [2023-11-23 22:30:52,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:52,330 INFO L225 Difference]: With dead ends: 11160 [2023-11-23 22:30:52,330 INFO L226 Difference]: Without dead ends: 5646 [2023-11-23 22:30:52,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:30:52,339 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 142 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:52,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 3141 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:30:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5646 states. [2023-11-23 22:30:52,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5646 to 5646. [2023-11-23 22:30:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5484 states have (on average 1.4848650619985413) internal successors, (8143), 5499 states have internal predecessors, (8143), 109 states have call successors, (109), 51 states have call predecessors, (109), 41 states have return successors, (144), 95 states have call predecessors, (144), 109 states have call successors, (144) [2023-11-23 22:30:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 8396 transitions. [2023-11-23 22:30:52,530 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 8396 transitions. Word has length 118 [2023-11-23 22:30:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:52,531 INFO L495 AbstractCegarLoop]: Abstraction has 5646 states and 8396 transitions. [2023-11-23 22:30:52,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 22:30:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 8396 transitions. [2023-11-23 22:30:52,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 22:30:52,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:52,533 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:52,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:52,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 22:30:52,756 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:52,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1632876603, now seen corresponding path program 1 times [2023-11-23 22:30:52,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:52,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205100778] [2023-11-23 22:30:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:52,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:52,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150433280] [2023-11-23 22:30:52,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:52,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:52,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:52,806 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:52,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 22:30:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:53,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 22:30:53,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:53,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 22:30:53,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 22:30:53,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-23 22:30:53,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 22:30:53,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 23 [2023-11-23 22:30:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 22:30:54,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:54,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:54,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205100778] [2023-11-23 22:30:54,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:54,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150433280] [2023-11-23 22:30:54,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150433280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:54,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:54,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 22:30:54,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342220881] [2023-11-23 22:30:54,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:54,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 22:30:54,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:54,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 22:30:54,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:30:54,688 INFO L87 Difference]: Start difference. First operand 5646 states and 8396 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 10 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 22:30:57,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:57,077 INFO L93 Difference]: Finished difference Result 13078 states and 19473 transitions. [2023-11-23 22:30:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 22:30:57,078 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 10 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 123 [2023-11-23 22:30:57,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:57,098 INFO L225 Difference]: With dead ends: 13078 [2023-11-23 22:30:57,098 INFO L226 Difference]: Without dead ends: 7515 [2023-11-23 22:30:57,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-23 22:30:57,108 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 686 mSDsluCounter, 3260 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 3786 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:57,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 3786 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 22:30:57,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7515 states. [2023-11-23 22:30:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7515 to 5678. [2023-11-23 22:30:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5678 states, 5516 states have (on average 1.4829586656997824) internal successors, (8180), 5531 states have internal predecessors, (8180), 109 states have call successors, (109), 51 states have call predecessors, (109), 41 states have return successors, (144), 95 states have call predecessors, (144), 109 states have call successors, (144) [2023-11-23 22:30:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5678 states to 5678 states and 8433 transitions. [2023-11-23 22:30:57,321 INFO L78 Accepts]: Start accepts. Automaton has 5678 states and 8433 transitions. Word has length 123 [2023-11-23 22:30:57,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:57,322 INFO L495 AbstractCegarLoop]: Abstraction has 5678 states and 8433 transitions. [2023-11-23 22:30:57,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 10 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 22:30:57,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5678 states and 8433 transitions. [2023-11-23 22:30:57,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 22:30:57,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:57,324 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:57,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:57,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 22:30:57,541 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:57,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:57,541 INFO L85 PathProgramCache]: Analyzing trace with hash -31805497, now seen corresponding path program 1 times [2023-11-23 22:30:57,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:57,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862877314] [2023-11-23 22:30:57,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:57,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:57,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:57,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1735171788] [2023-11-23 22:30:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:57,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:57,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:57,590 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:57,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 22:30:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:58,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:30:58,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 22:30:58,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:58,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:58,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862877314] [2023-11-23 22:30:58,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:58,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735171788] [2023-11-23 22:30:58,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735171788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:58,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:58,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:30:58,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116087715] [2023-11-23 22:30:58,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:58,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:30:58,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:58,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:30:58,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:30:58,213 INFO L87 Difference]: Start difference. First operand 5678 states and 8433 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 22:30:58,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:30:58,515 INFO L93 Difference]: Finished difference Result 12541 states and 18716 transitions. [2023-11-23 22:30:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:30:58,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 123 [2023-11-23 22:30:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:30:58,533 INFO L225 Difference]: With dead ends: 12541 [2023-11-23 22:30:58,534 INFO L226 Difference]: Without dead ends: 6966 [2023-11-23 22:30:58,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:30:58,544 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 142 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:30:58,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2130 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:30:58,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6966 states. [2023-11-23 22:30:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6966 to 5931. [2023-11-23 22:30:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5931 states, 5769 states have (on average 1.4650719362107818) internal successors, (8452), 5784 states have internal predecessors, (8452), 109 states have call successors, (109), 51 states have call predecessors, (109), 41 states have return successors, (144), 95 states have call predecessors, (144), 109 states have call successors, (144) [2023-11-23 22:30:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5931 states to 5931 states and 8705 transitions. [2023-11-23 22:30:58,752 INFO L78 Accepts]: Start accepts. Automaton has 5931 states and 8705 transitions. Word has length 123 [2023-11-23 22:30:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:30:58,753 INFO L495 AbstractCegarLoop]: Abstraction has 5931 states and 8705 transitions. [2023-11-23 22:30:58,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 22:30:58,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5931 states and 8705 transitions. [2023-11-23 22:30:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 22:30:58,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:30:58,755 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:30:58,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 22:30:58,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 22:30:58,977 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:30:58,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:30:58,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2062111397, now seen corresponding path program 1 times [2023-11-23 22:30:58,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:30:58,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449647289] [2023-11-23 22:30:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:58,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:30:59,030 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:30:59,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181121763] [2023-11-23 22:30:59,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:30:59,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:30:59,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:30:59,032 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:30:59,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 22:30:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:30:59,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 22:30:59,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:30:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:30:59,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:30:59,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:30:59,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449647289] [2023-11-23 22:30:59,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:30:59,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181121763] [2023-11-23 22:30:59,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181121763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:30:59,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:30:59,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 22:30:59,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777060727] [2023-11-23 22:30:59,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:30:59,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:30:59,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:30:59,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:30:59,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:30:59,717 INFO L87 Difference]: Start difference. First operand 5931 states and 8705 transitions. Second operand has 9 states, 8 states have (on average 14.25) internal successors, (114), 9 states have internal predecessors, (114), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-23 22:31:00,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:31:00,028 INFO L93 Difference]: Finished difference Result 9679 states and 14227 transitions. [2023-11-23 22:31:00,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 22:31:00,029 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.25) internal successors, (114), 9 states have internal predecessors, (114), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 124 [2023-11-23 22:31:00,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:31:00,039 INFO L225 Difference]: With dead ends: 9679 [2023-11-23 22:31:00,040 INFO L226 Difference]: Without dead ends: 3901 [2023-11-23 22:31:00,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-23 22:31:00,050 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 23 mSDsluCounter, 3775 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4319 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:31:00,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4319 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:31:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2023-11-23 22:31:00,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 3899. [2023-11-23 22:31:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3899 states, 3782 states have (on average 1.467741935483871) internal successors, (5551), 3798 states have internal predecessors, (5551), 66 states have call successors, (66), 43 states have call predecessors, (66), 39 states have return successors, (79), 57 states have call predecessors, (79), 66 states have call successors, (79) [2023-11-23 22:31:00,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3899 states to 3899 states and 5696 transitions. [2023-11-23 22:31:00,238 INFO L78 Accepts]: Start accepts. Automaton has 3899 states and 5696 transitions. Word has length 124 [2023-11-23 22:31:00,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:31:00,238 INFO L495 AbstractCegarLoop]: Abstraction has 3899 states and 5696 transitions. [2023-11-23 22:31:00,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.25) internal successors, (114), 9 states have internal predecessors, (114), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-23 22:31:00,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3899 states and 5696 transitions. [2023-11-23 22:31:00,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 22:31:00,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:31:00,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:31:00,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 22:31:00,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 22:31:00,455 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:31:00,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:31:00,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1019333063, now seen corresponding path program 1 times [2023-11-23 22:31:00,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:31:00,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094011152] [2023-11-23 22:31:00,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:00,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:31:00,507 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:31:00,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417339039] [2023-11-23 22:31:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:00,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:31:00,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:31:00,509 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:31:00,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 22:31:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:31:01,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 149 conjunts are in the unsatisfiable core [2023-11-23 22:31:01,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:31:01,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 22:31:01,179 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 [2023-11-23 22:31:01,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 22:31:01,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-23 22:31:02,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 22:31:02,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 23 [2023-11-23 22:31:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 22:31:02,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:31:02,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:31:02,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094011152] [2023-11-23 22:31:02,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:31:02,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417339039] [2023-11-23 22:31:02,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417339039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:31:02,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:31:02,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 22:31:02,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468458412] [2023-11-23 22:31:02,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:31:02,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 22:31:02,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:31:02,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 22:31:02,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:31:02,343 INFO L87 Difference]: Start difference. First operand 3899 states and 5696 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 22:31:05,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:31:05,754 INFO L93 Difference]: Finished difference Result 8914 states and 13089 transitions. [2023-11-23 22:31:05,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 22:31:05,755 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 126 [2023-11-23 22:31:05,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:31:05,774 INFO L225 Difference]: With dead ends: 8914 [2023-11-23 22:31:05,774 INFO L226 Difference]: Without dead ends: 5130 [2023-11-23 22:31:05,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-11-23 22:31:05,783 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 868 mSDsluCounter, 4069 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 4593 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:31:05,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 4593 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 22:31:05,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5130 states. [2023-11-23 22:31:05,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5130 to 3901. [2023-11-23 22:31:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3901 states, 3784 states have (on average 1.467494714587738) internal successors, (5553), 3800 states have internal predecessors, (5553), 66 states have call successors, (66), 43 states have call predecessors, (66), 39 states have return successors, (79), 57 states have call predecessors, (79), 66 states have call successors, (79) [2023-11-23 22:31:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 5698 transitions. [2023-11-23 22:31:05,943 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 5698 transitions. Word has length 126 [2023-11-23 22:31:05,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:31:05,944 INFO L495 AbstractCegarLoop]: Abstraction has 3901 states and 5698 transitions. [2023-11-23 22:31:05,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 22:31:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 5698 transitions. [2023-11-23 22:31:05,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 22:31:05,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:31:05,946 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:31:05,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-23 22:31:06,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:31:06,169 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:31:06,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:31:06,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2077979210, now seen corresponding path program 1 times [2023-11-23 22:31:06,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:31:06,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893008040] [2023-11-23 22:31:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:06,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:31:06,239 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:31:06,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819875291] [2023-11-23 22:31:06,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:06,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:31:06,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:31:06,250 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:31:06,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-23 22:31:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:31:07,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 22:31:07,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:31:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 22:31:07,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:31:07,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:31:07,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893008040] [2023-11-23 22:31:07,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:31:07,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819875291] [2023-11-23 22:31:07,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819875291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:31:07,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:31:07,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:31:07,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992095976] [2023-11-23 22:31:07,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:31:07,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:31:07,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:31:07,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:31:07,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:31:07,516 INFO L87 Difference]: Start difference. First operand 3901 states and 5698 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 22:31:08,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:31:08,369 INFO L93 Difference]: Finished difference Result 7813 states and 11424 transitions. [2023-11-23 22:31:08,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:31:08,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 127 [2023-11-23 22:31:08,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:31:08,381 INFO L225 Difference]: With dead ends: 7813 [2023-11-23 22:31:08,381 INFO L226 Difference]: Without dead ends: 4037 [2023-11-23 22:31:08,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:31:08,389 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 16 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 22:31:08,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2687 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 22:31:08,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4037 states. [2023-11-23 22:31:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4037 to 4009. [2023-11-23 22:31:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4009 states, 3892 states have (on average 1.46120246659815) internal successors, (5687), 3908 states have internal predecessors, (5687), 66 states have call successors, (66), 43 states have call predecessors, (66), 39 states have return successors, (79), 57 states have call predecessors, (79), 66 states have call successors, (79) [2023-11-23 22:31:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 5832 transitions. [2023-11-23 22:31:08,558 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 5832 transitions. Word has length 127 [2023-11-23 22:31:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:31:08,559 INFO L495 AbstractCegarLoop]: Abstraction has 4009 states and 5832 transitions. [2023-11-23 22:31:08,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 22:31:08,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 5832 transitions. [2023-11-23 22:31:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 22:31:08,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:31:08,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:31:08,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-23 22:31:08,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:31:08,789 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:31:08,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:31:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1537232520, now seen corresponding path program 1 times [2023-11-23 22:31:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:31:08,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759489565] [2023-11-23 22:31:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:08,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:31:08,847 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:31:08,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513798221] [2023-11-23 22:31:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:08,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:31:08,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:31:08,849 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:31:08,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-23 22:31:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:31:09,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 22:31:09,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:31:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 22:31:09,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:31:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 22:31:09,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:31:09,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759489565] [2023-11-23 22:31:09,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:31:09,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513798221] [2023-11-23 22:31:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513798221] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:31:09,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:31:09,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-11-23 22:31:09,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728916252] [2023-11-23 22:31:09,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:31:09,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 22:31:09,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:31:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 22:31:09,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:31:09,986 INFO L87 Difference]: Start difference. First operand 4009 states and 5832 transitions. Second operand has 11 states, 9 states have (on average 13.444444444444445) internal successors, (121), 11 states have internal predecessors, (121), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 22:31:10,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:31:10,361 INFO L93 Difference]: Finished difference Result 7910 states and 11553 transitions. [2023-11-23 22:31:10,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 22:31:10,362 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 13.444444444444445) internal successors, (121), 11 states have internal predecessors, (121), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 128 [2023-11-23 22:31:10,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:31:10,373 INFO L225 Difference]: With dead ends: 7910 [2023-11-23 22:31:10,373 INFO L226 Difference]: Without dead ends: 4072 [2023-11-23 22:31:10,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2023-11-23 22:31:10,380 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 28 mSDsluCounter, 2734 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:31:10,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3284 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:31:10,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2023-11-23 22:31:10,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 4068. [2023-11-23 22:31:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4068 states, 3949 states have (on average 1.460622942517093) internal successors, (5768), 3961 states have internal predecessors, (5768), 66 states have call successors, (66), 49 states have call predecessors, (66), 41 states have return successors, (81), 57 states have call predecessors, (81), 66 states have call successors, (81) [2023-11-23 22:31:10,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4068 states to 4068 states and 5915 transitions. [2023-11-23 22:31:10,555 INFO L78 Accepts]: Start accepts. Automaton has 4068 states and 5915 transitions. Word has length 128 [2023-11-23 22:31:10,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:31:10,555 INFO L495 AbstractCegarLoop]: Abstraction has 4068 states and 5915 transitions. [2023-11-23 22:31:10,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 13.444444444444445) internal successors, (121), 11 states have internal predecessors, (121), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-23 22:31:10,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4068 states and 5915 transitions. [2023-11-23 22:31:10,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 22:31:10,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:31:10,558 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:31:10,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-23 22:31:10,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-23 22:31:10,777 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:31:10,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:31:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash -237888084, now seen corresponding path program 2 times [2023-11-23 22:31:10,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:31:10,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139252657] [2023-11-23 22:31:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:10,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:31:10,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:31:10,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737725349] [2023-11-23 22:31:10,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:31:10,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:31:10,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:31:10,839 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:31:10,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-23 22:31:11,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 22:31:11,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:31:11,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:31:11,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:31:11,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 22:31:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 22:31:11,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:31:11,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:31:11,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139252657] [2023-11-23 22:31:11,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:31:11,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737725349] [2023-11-23 22:31:11,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737725349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:31:11,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:31:11,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:31:11,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87757226] [2023-11-23 22:31:11,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:31:11,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:31:11,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:31:11,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:31:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:31:11,373 INFO L87 Difference]: Start difference. First operand 4068 states and 5915 transitions. Second operand has 3 states, 2 states have (on average 53.0) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 22:31:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:31:11,498 INFO L93 Difference]: Finished difference Result 4068 states and 5915 transitions. [2023-11-23 22:31:11,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:31:11,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 53.0) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 132 [2023-11-23 22:31:11,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:31:11,511 INFO L225 Difference]: With dead ends: 4068 [2023-11-23 22:31:11,511 INFO L226 Difference]: Without dead ends: 4067 [2023-11-23 22:31:11,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:31:11,514 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 2 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:31:11,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1101 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:31:11,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2023-11-23 22:31:11,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 4067. [2023-11-23 22:31:11,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4067 states, 3949 states have (on average 1.4591035705241833) internal successors, (5762), 3960 states have internal predecessors, (5762), 66 states have call successors, (66), 49 states have call predecessors, (66), 41 states have return successors, (81), 57 states have call predecessors, (81), 66 states have call successors, (81) [2023-11-23 22:31:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4067 states to 4067 states and 5909 transitions. [2023-11-23 22:31:11,736 INFO L78 Accepts]: Start accepts. Automaton has 4067 states and 5909 transitions. Word has length 132 [2023-11-23 22:31:11,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:31:11,737 INFO L495 AbstractCegarLoop]: Abstraction has 4067 states and 5909 transitions. [2023-11-23 22:31:11,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 53.0) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-23 22:31:11,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4067 states and 5909 transitions. [2023-11-23 22:31:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 22:31:11,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:31:11,740 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:31:11,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-23 22:31:11,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-23 22:31:11,961 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:31:11,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:31:11,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1215404091, now seen corresponding path program 1 times [2023-11-23 22:31:11,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:31:11,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679903485] [2023-11-23 22:31:11,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:11,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:31:12,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:31:12,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088852050] [2023-11-23 22:31:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:12,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:31:12,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:31:12,057 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:31:12,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-23 22:31:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:31:12,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 22:31:12,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:31:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 22:31:12,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:31:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 22:31:13,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:31:13,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679903485] [2023-11-23 22:31:13,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:31:13,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088852050] [2023-11-23 22:31:13,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088852050] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:31:13,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:31:13,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 17 [2023-11-23 22:31:13,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432770878] [2023-11-23 22:31:13,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:31:13,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 22:31:13,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:31:13,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 22:31:13,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-23 22:31:13,110 INFO L87 Difference]: Start difference. First operand 4067 states and 5909 transitions. Second operand has 17 states, 15 states have (on average 9.466666666666667) internal successors, (142), 17 states have internal predecessors, (142), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 22:31:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:31:13,850 INFO L93 Difference]: Finished difference Result 7613 states and 11083 transitions. [2023-11-23 22:31:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 22:31:13,850 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 9.466666666666667) internal successors, (142), 17 states have internal predecessors, (142), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 133 [2023-11-23 22:31:13,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:31:13,860 INFO L225 Difference]: With dead ends: 7613 [2023-11-23 22:31:13,861 INFO L226 Difference]: Without dead ends: 3590 [2023-11-23 22:31:13,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2023-11-23 22:31:13,868 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 152 mSDsluCounter, 4060 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 4524 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:31:13,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 4524 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 22:31:13,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2023-11-23 22:31:14,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 3568. [2023-11-23 22:31:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3568 states, 3450 states have (on average 1.4544927536231884) internal successors, (5018), 3461 states have internal predecessors, (5018), 66 states have call successors, (66), 49 states have call predecessors, (66), 41 states have return successors, (74), 57 states have call predecessors, (74), 66 states have call successors, (74) [2023-11-23 22:31:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 5158 transitions. [2023-11-23 22:31:14,074 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 5158 transitions. Word has length 133 [2023-11-23 22:31:14,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:31:14,074 INFO L495 AbstractCegarLoop]: Abstraction has 3568 states and 5158 transitions. [2023-11-23 22:31:14,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 9.466666666666667) internal successors, (142), 17 states have internal predecessors, (142), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 22:31:14,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 5158 transitions. [2023-11-23 22:31:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-23 22:31:14,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:31:14,077 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:31:14,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-23 22:31:14,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-23 22:31:14,297 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-11-23 22:31:14,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:31:14,297 INFO L85 PathProgramCache]: Analyzing trace with hash -381474309, now seen corresponding path program 2 times [2023-11-23 22:31:14,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:31:14,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440547321] [2023-11-23 22:31:14,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:31:14,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:31:14,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:31:14,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977494343] [2023-11-23 22:31:14,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:31:14,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:31:14,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:31:14,362 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:31:14,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bd05d5-c952-4d8b-8e2f-05878bf7ab10/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process