./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c4f91361 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test4-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 14:35:46,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 14:35:46,519 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 14:35:46,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 14:35:46,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 14:35:46,559 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 14:35:46,560 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 14:35:46,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 14:35:46,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 14:35:46,563 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 14:35:46,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 14:35:46,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 14:35:46,564 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 14:35:46,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 14:35:46,564 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 14:35:46,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 14:35:46,565 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 14:35:46,565 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 14:35:46,566 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 14:35:46,566 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 14:35:46,566 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 14:35:46,567 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 14:35:46,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 14:35:46,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 14:35:46,568 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 14:35:46,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 14:35:46,569 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 14:35:46,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 14:35:46,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 14:35:46,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 14:35:46,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 14:35:46,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 14:35:46,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 14:35:46,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 14:35:46,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 14:35:46,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 14:35:46,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 14:35:46,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 14:35:46,587 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 14:35:46,588 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 14:35:46,588 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 14:35:46,588 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 14:35:46,589 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c81340d9d0e66dca5ab126c254e84ac0eff8aac681c837312fa0969b8f7f2ee [2023-11-23 14:35:46,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 14:35:46,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 14:35:46,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 14:35:46,897 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 14:35:46,897 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 14:35:46,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test4-3.i [2023-11-23 14:35:48,047 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 14:35:48,296 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 14:35:48,296 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test4-3.i [2023-11-23 14:35:48,310 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f37f2978/6e5286c0ddad4c8c8f39437f09903e14/FLAG5d34c3984 [2023-11-23 14:35:48,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f37f2978/6e5286c0ddad4c8c8f39437f09903e14 [2023-11-23 14:35:48,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 14:35:48,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 14:35:48,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 14:35:48,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 14:35:48,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 14:35:48,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:35:48" (1/1) ... [2023-11-23 14:35:48,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19763bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:48, skipping insertion in model container [2023-11-23 14:35:48,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:35:48" (1/1) ... [2023-11-23 14:35:48,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 14:35:48,790 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test4-3.i[33510,33523] [2023-11-23 14:35:48,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 14:35:48,977 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 14:35:49,006 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/uthash-2.0.2/uthash_BER_nondet_test4-3.i[33510,33523] [2023-11-23 14:35:49,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 14:35:49,111 INFO L206 MainTranslator]: Completed translation [2023-11-23 14:35:49,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49 WrapperNode [2023-11-23 14:35:49,112 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 14:35:49,113 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 14:35:49,113 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 14:35:49,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 14:35:49,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (1/1) ... [2023-11-23 14:35:49,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (1/1) ... [2023-11-23 14:35:49,229 INFO L138 Inliner]: procedures = 177, calls = 438, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1770 [2023-11-23 14:35:49,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 14:35:49,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 14:35:49,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 14:35:49,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 14:35:49,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (1/1) ... [2023-11-23 14:35:49,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (1/1) ... [2023-11-23 14:35:49,251 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (1/1) ... [2023-11-23 14:35:49,384 INFO L175 MemorySlicer]: Split 413 memory accesses to 5 slices as follows [2, 5, 5, 0, 401]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 100 writes are split as follows [0, 1, 1, 0, 98]. [2023-11-23 14:35:49,385 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (1/1) ... [2023-11-23 14:35:49,385 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (1/1) ... [2023-11-23 14:35:49,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (1/1) ... [2023-11-23 14:35:49,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (1/1) ... [2023-11-23 14:35:49,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (1/1) ... [2023-11-23 14:35:49,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (1/1) ... [2023-11-23 14:35:49,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 14:35:49,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 14:35:49,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 14:35:49,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 14:35:49,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (1/1) ... [2023-11-23 14:35:49,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 14:35:49,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:35:49,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 14:35:49,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 14:35:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 14:35:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 14:35:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 14:35:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 14:35:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 14:35:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 14:35:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 14:35:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 14:35:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 14:35:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 14:35:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-23 14:35:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-23 14:35:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-23 14:35:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-23 14:35:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-23 14:35:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-23 14:35:49,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-23 14:35:49,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-23 14:35:49,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-23 14:35:49,612 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-23 14:35:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 14:35:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 14:35:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 14:35:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 14:35:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 14:35:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 14:35:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 14:35:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 14:35:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 14:35:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 14:35:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 14:35:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 14:35:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 14:35:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 14:35:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 14:35:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 14:35:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 14:35:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 14:35:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 14:35:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 14:35:49,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 14:35:49,894 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 14:35:49,897 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 14:35:51,266 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 14:35:51,314 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 14:35:51,314 INFO L309 CfgBuilder]: Removed 77 assume(true) statements. [2023-11-23 14:35:51,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:35:51 BoogieIcfgContainer [2023-11-23 14:35:51,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 14:35:51,318 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 14:35:51,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 14:35:51,321 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 14:35:51,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:35:48" (1/3) ... [2023-11-23 14:35:51,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bb3f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:35:51, skipping insertion in model container [2023-11-23 14:35:51,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:49" (2/3) ... [2023-11-23 14:35:51,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bb3f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:35:51, skipping insertion in model container [2023-11-23 14:35:51,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:35:51" (3/3) ... [2023-11-23 14:35:51,325 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test4-3.i [2023-11-23 14:35:51,340 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 14:35:51,341 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 14:35:51,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 14:35:51,409 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;@729c2cf3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 14:35:51,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 14:35:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 415 states, 406 states have (on average 1.6945812807881773) internal successors, (688), 407 states have internal predecessors, (688), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 14:35:51,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 14:35:51,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:35:51,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 14:35:51,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:35:51,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:35:51,433 INFO L85 PathProgramCache]: Analyzing trace with hash -860398691, now seen corresponding path program 1 times [2023-11-23 14:35:51,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:35:51,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6457887] [2023-11-23 14:35:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:51,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:35:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:35:51,714 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 14:35:51,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:35:51,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6457887] [2023-11-23 14:35:51,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6457887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:35:51,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:35:51,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 14:35:51,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255867676] [2023-11-23 14:35:51,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:35:51,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 14:35:51,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:35:51,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 14:35:51,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 14:35:51,755 INFO L87 Difference]: Start difference. First operand has 415 states, 406 states have (on average 1.6945812807881773) internal successors, (688), 407 states have internal predecessors, (688), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 14:35:52,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:35:52,159 INFO L93 Difference]: Finished difference Result 1172 states and 1983 transitions. [2023-11-23 14:35:52,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 14:35:52,161 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-23 14:35:52,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:35:52,176 INFO L225 Difference]: With dead ends: 1172 [2023-11-23 14:35:52,177 INFO L226 Difference]: Without dead ends: 633 [2023-11-23 14:35:52,183 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 14:35:52,185 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 522 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 14:35:52,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1741 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 14:35:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-11-23 14:35:52,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2023-11-23 14:35:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 622 states have (on average 1.517684887459807) internal successors, (944), 622 states have internal predecessors, (944), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 14:35:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2023-11-23 14:35:52,251 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 9 [2023-11-23 14:35:52,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:35:52,252 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2023-11-23 14:35:52,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 14:35:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2023-11-23 14:35:52,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-23 14:35:52,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:35:52,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:52,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 14:35:52,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:35:52,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:35:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1109250120, now seen corresponding path program 1 times [2023-11-23 14:35:52,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:35:52,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173164572] [2023-11-23 14:35:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:52,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:35:52,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 14:35:52,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971266007] [2023-11-23 14:35:52,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:52,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:35:52,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:35:52,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:35:52,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 14:35:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:35:52,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 14:35:52,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:35:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 14:35:52,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 14:35:52,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:35:52,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173164572] [2023-11-23 14:35:52,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 14:35:52,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971266007] [2023-11-23 14:35:52,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971266007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:35:52,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:35:52,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 14:35:52,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076401018] [2023-11-23 14:35:52,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:35:52,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 14:35:52,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:35:52,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 14:35:52,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:35:52,842 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 14:35:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:35:52,920 INFO L93 Difference]: Finished difference Result 1256 states and 1904 transitions. [2023-11-23 14:35:52,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 14:35:52,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-23 14:35:52,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:35:52,924 INFO L225 Difference]: With dead ends: 1256 [2023-11-23 14:35:52,925 INFO L226 Difference]: Without dead ends: 675 [2023-11-23 14:35:52,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 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 14:35:52,927 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 8 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 14:35:52,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1000 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 14:35:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-11-23 14:35:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 673. [2023-11-23 14:35:52,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 662 states have (on average 1.486404833836858) internal successors, (984), 662 states have internal predecessors, (984), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 14:35:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1002 transitions. [2023-11-23 14:35:52,949 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1002 transitions. Word has length 168 [2023-11-23 14:35:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:35:52,950 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1002 transitions. [2023-11-23 14:35:52,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 14:35:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1002 transitions. [2023-11-23 14:35:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-23 14:35:52,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:35:52,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:52,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 14:35:53,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:35:53,177 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:35:53,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:35:53,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1519860486, now seen corresponding path program 1 times [2023-11-23 14:35:53,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:35:53,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912276600] [2023-11-23 14:35:53,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:53,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:35:53,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 14:35:53,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987689845] [2023-11-23 14:35:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:53,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:35:53,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:35:53,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:35:53,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 14:35:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:35:53,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 14:35:53,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:35:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 14:35:53,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 14:35:53,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:35:53,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912276600] [2023-11-23 14:35:53,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 14:35:53,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987689845] [2023-11-23 14:35:53,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987689845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:35:53,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:35:53,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 14:35:53,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13076139] [2023-11-23 14:35:53,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:35:53,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 14:35:53,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:35:53,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 14:35:53,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:35:53,758 INFO L87 Difference]: Start difference. First operand 673 states and 1002 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 14:35:53,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:35:53,834 INFO L93 Difference]: Finished difference Result 1148 states and 1709 transitions. [2023-11-23 14:35:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 14:35:53,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-23 14:35:53,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:35:53,841 INFO L225 Difference]: With dead ends: 1148 [2023-11-23 14:35:53,841 INFO L226 Difference]: Without dead ends: 715 [2023-11-23 14:35:53,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 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 14:35:53,845 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 9 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 14:35:53,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 998 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 14:35:53,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-11-23 14:35:53,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 713. [2023-11-23 14:35:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 702 states have (on average 1.4586894586894588) internal successors, (1024), 702 states have internal predecessors, (1024), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 14:35:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1042 transitions. [2023-11-23 14:35:53,863 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1042 transitions. Word has length 168 [2023-11-23 14:35:53,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:35:53,865 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1042 transitions. [2023-11-23 14:35:53,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 14:35:53,869 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1042 transitions. [2023-11-23 14:35:53,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-23 14:35:53,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:35:53,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:53,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 14:35:54,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 14:35:54,091 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:35:54,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:35:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1546926088, now seen corresponding path program 1 times [2023-11-23 14:35:54,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:35:54,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992488975] [2023-11-23 14:35:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:54,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:35:54,177 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 14:35:54,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718944924] [2023-11-23 14:35:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:54,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:35:54,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:35:54,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:35:54,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 14:35:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:35:54,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 14:35:54,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:35:54,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 14:35:54,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 14:35:54,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:35:54,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992488975] [2023-11-23 14:35:54,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 14:35:54,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718944924] [2023-11-23 14:35:54,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718944924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:35:54,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:35:54,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 14:35:54,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737273715] [2023-11-23 14:35:54,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:35:54,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 14:35:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:35:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 14:35:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 14:35:54,681 INFO L87 Difference]: Start difference. First operand 713 states and 1042 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 14:35:54,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:35:54,748 INFO L93 Difference]: Finished difference Result 1330 states and 1949 transitions. [2023-11-23 14:35:54,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 14:35:54,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-23 14:35:54,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:35:54,751 INFO L225 Difference]: With dead ends: 1330 [2023-11-23 14:35:54,751 INFO L226 Difference]: Without dead ends: 687 [2023-11-23 14:35:54,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 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 14:35:54,753 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 168 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:35:54,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 1345 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:35:54,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-11-23 14:35:54,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 685. [2023-11-23 14:35:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 674 states have (on average 1.456973293768546) internal successors, (982), 674 states have internal predecessors, (982), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 14:35:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1000 transitions. [2023-11-23 14:35:54,768 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1000 transitions. Word has length 168 [2023-11-23 14:35:54,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:35:54,769 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1000 transitions. [2023-11-23 14:35:54,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 14:35:54,769 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1000 transitions. [2023-11-23 14:35:54,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-23 14:35:54,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:35:54,771 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:54,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 14:35:54,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:35:54,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:35:54,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:35:54,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1793900308, now seen corresponding path program 1 times [2023-11-23 14:35:54,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:35:54,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688853936] [2023-11-23 14:35:54,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:54,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:35:55,061 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 14:35:55,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763076967] [2023-11-23 14:35:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:55,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:35:55,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:35:55,064 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:35:55,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 14:35:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:35:55,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 14:35:55,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:35:55,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 14:35:55,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 14:35:55,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:35:55,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688853936] [2023-11-23 14:35:55,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 14:35:55,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763076967] [2023-11-23 14:35:55,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763076967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:35:55,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:35:55,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 14:35:55,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845043220] [2023-11-23 14:35:55,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:35:55,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 14:35:55,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:35:55,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 14:35:55,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 14:35:55,581 INFO L87 Difference]: Start difference. First operand 685 states and 1000 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 14:35:55,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:35:55,661 INFO L93 Difference]: Finished difference Result 1100 states and 1611 transitions. [2023-11-23 14:35:55,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 14:35:55,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-23 14:35:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:35:55,664 INFO L225 Difference]: With dead ends: 1100 [2023-11-23 14:35:55,664 INFO L226 Difference]: Without dead ends: 659 [2023-11-23 14:35:55,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 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 14:35:55,665 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 165 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 14:35:55,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1324 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 14:35:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-11-23 14:35:55,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 657. [2023-11-23 14:35:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 646 states have (on average 1.4551083591331269) internal successors, (940), 646 states have internal predecessors, (940), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 14:35:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 958 transitions. [2023-11-23 14:35:55,681 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 958 transitions. Word has length 168 [2023-11-23 14:35:55,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:35:55,683 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 958 transitions. [2023-11-23 14:35:55,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 14:35:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 958 transitions. [2023-11-23 14:35:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-23 14:35:55,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:35:55,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:55,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 14:35:55,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:35:55,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:35:55,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:35:55,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1764734202, now seen corresponding path program 1 times [2023-11-23 14:35:55,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:35:55,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421740905] [2023-11-23 14:35:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:55,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:35:55,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 14:35:55,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173138765] [2023-11-23 14:35:55,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:55,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:35:55,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:35:55,982 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:35:56,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 14:35:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:35:56,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 14:35:56,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:35:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 14:35:56,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 14:35:56,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:35:56,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421740905] [2023-11-23 14:35:56,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 14:35:56,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173138765] [2023-11-23 14:35:56,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173138765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:35:56,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:35:56,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 14:35:56,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808672522] [2023-11-23 14:35:56,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:35:56,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 14:35:56,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:35:56,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 14:35:56,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 14:35:56,663 INFO L87 Difference]: Start difference. First operand 657 states and 958 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 14:35:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:35:56,710 INFO L93 Difference]: Finished difference Result 1183 states and 1723 transitions. [2023-11-23 14:35:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 14:35:56,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-23 14:35:56,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:35:56,714 INFO L225 Difference]: With dead ends: 1183 [2023-11-23 14:35:56,714 INFO L226 Difference]: Without dead ends: 655 [2023-11-23 14:35:56,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 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 14:35:56,715 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 123 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 14:35:56,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1007 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 14:35:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-11-23 14:35:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2023-11-23 14:35:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 644 states have (on average 1.454968944099379) internal successors, (937), 644 states have internal predecessors, (937), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 14:35:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 955 transitions. [2023-11-23 14:35:56,734 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 955 transitions. Word has length 168 [2023-11-23 14:35:56,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:35:56,735 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 955 transitions. [2023-11-23 14:35:56,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 14:35:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 955 transitions. [2023-11-23 14:35:56,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 14:35:56,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:35:56,737 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:56,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 14:35:56,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:35:56,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:35:56,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:35:56,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1430061346, now seen corresponding path program 1 times [2023-11-23 14:35:56,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:35:56,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661200560] [2023-11-23 14:35:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:56,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:35:57,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 14:35:57,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660823353] [2023-11-23 14:35:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:57,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:35:57,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:35:57,034 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:35:57,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 14:35:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:35:57,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 14:35:57,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:35:57,630 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 16 treesize of output 17 [2023-11-23 14:35:57,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 14:35:57,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 26 [2023-11-23 14:35:58,132 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 14:35:58,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 14:35:58,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:35:58,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661200560] [2023-11-23 14:35:58,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 14:35:58,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660823353] [2023-11-23 14:35:58,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660823353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:35:58,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:35:58,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 14:35:58,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996708154] [2023-11-23 14:35:58,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:35:58,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 14:35:58,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:35:58,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 14:35:58,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 14:35:58,136 INFO L87 Difference]: Start difference. First operand 655 states and 955 transitions. Second operand has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 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 14:35:59,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:35:59,538 INFO L93 Difference]: Finished difference Result 1328 states and 1921 transitions. [2023-11-23 14:35:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 14:35:59,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 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 181 [2023-11-23 14:35:59,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:35:59,544 INFO L225 Difference]: With dead ends: 1328 [2023-11-23 14:35:59,544 INFO L226 Difference]: Without dead ends: 754 [2023-11-23 14:35:59,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-23 14:35:59,546 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 744 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 14:35:59,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 2872 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 14:35:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-11-23 14:35:59,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 687. [2023-11-23 14:35:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 676 states have (on average 1.4408284023668638) internal successors, (974), 676 states have internal predecessors, (974), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 14:35:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 992 transitions. [2023-11-23 14:35:59,571 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 992 transitions. Word has length 181 [2023-11-23 14:35:59,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:35:59,571 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 992 transitions. [2023-11-23 14:35:59,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 11 states have internal predecessors, (167), 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 14:35:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 992 transitions. [2023-11-23 14:35:59,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 14:35:59,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:35:59,574 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:35:59,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 14:35:59,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:35:59,800 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:35:59,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:35:59,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1085233184, now seen corresponding path program 1 times [2023-11-23 14:35:59,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:35:59,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600862502] [2023-11-23 14:35:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:59,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:35:59,882 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 14:35:59,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004778923] [2023-11-23 14:35:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:35:59,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:35:59,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:35:59,884 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:35:59,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 14:36:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:36:00,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 14:36:00,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:36:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 14:36:00,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 14:36:00,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:36:00,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600862502] [2023-11-23 14:36:00,466 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 14:36:00,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004778923] [2023-11-23 14:36:00,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004778923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:36:00,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:36:00,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 14:36:00,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280186845] [2023-11-23 14:36:00,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:36:00,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 14:36:00,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:36:00,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 14:36:00,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 14:36:00,468 INFO L87 Difference]: Start difference. First operand 687 states and 992 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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 14:36:00,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:36:00,583 INFO L93 Difference]: Finished difference Result 1461 states and 2146 transitions. [2023-11-23 14:36:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 14:36:00,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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 181 [2023-11-23 14:36:00,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:36:00,586 INFO L225 Difference]: With dead ends: 1461 [2023-11-23 14:36:00,586 INFO L226 Difference]: Without dead ends: 875 [2023-11-23 14:36:00,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 177 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 14:36:00,588 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 142 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 14:36:00,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1958 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 14:36:00,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-23 14:36:00,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 710. [2023-11-23 14:36:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 699 states have (on average 1.4248927038626609) internal successors, (996), 699 states have internal predecessors, (996), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 14:36:00,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1014 transitions. [2023-11-23 14:36:00,606 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1014 transitions. Word has length 181 [2023-11-23 14:36:00,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:36:00,607 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1014 transitions. [2023-11-23 14:36:00,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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 14:36:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1014 transitions. [2023-11-23 14:36:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-23 14:36:00,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:36:00,611 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:00,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 14:36:00,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:36:00,826 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:36:00,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:36:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash -904991577, now seen corresponding path program 1 times [2023-11-23 14:36:00,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:36:00,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129733890] [2023-11-23 14:36:00,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:36:00,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:36:00,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 14:36:00,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634058444] [2023-11-23 14:36:00,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:36:00,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:36:00,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:36:00,910 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:36:00,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 14:36:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:36:01,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 14:36:01,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:36:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 14:36:01,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 14:36:01,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:36:01,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129733890] [2023-11-23 14:36:01,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 14:36:01,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634058444] [2023-11-23 14:36:01,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634058444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:36:01,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:36:01,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 14:36:01,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583392186] [2023-11-23 14:36:01,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:36:01,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 14:36:01,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:36:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 14:36:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 14:36:01,648 INFO L87 Difference]: Start difference. First operand 710 states and 1014 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 14:36:01,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:36:01,821 INFO L93 Difference]: Finished difference Result 1330 states and 1912 transitions. [2023-11-23 14:36:01,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 14:36:01,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 182 [2023-11-23 14:36:01,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:36:01,824 INFO L225 Difference]: With dead ends: 1330 [2023-11-23 14:36:01,824 INFO L226 Difference]: Without dead ends: 733 [2023-11-23 14:36:01,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 14:36:01,825 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 15 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 14:36:01,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1348 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 14:36:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2023-11-23 14:36:01,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 721. [2023-11-23 14:36:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 710 states have (on average 1.419718309859155) internal successors, (1008), 710 states have internal predecessors, (1008), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 14:36:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1026 transitions. [2023-11-23 14:36:01,843 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1026 transitions. Word has length 182 [2023-11-23 14:36:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:36:01,843 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 1026 transitions. [2023-11-23 14:36:01,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 14:36:01,844 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1026 transitions. [2023-11-23 14:36:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-23 14:36:01,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:36:01,845 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:01,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 14:36:02,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-23 14:36:02,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:36:02,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:36:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1825650649, now seen corresponding path program 1 times [2023-11-23 14:36:02,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:36:02,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223422326] [2023-11-23 14:36:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:36:02,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:36:02,139 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 14:36:02,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255715581] [2023-11-23 14:36:02,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:36:02,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:36:02,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:36:02,141 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:36:02,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 14:36:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:36:02,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 14:36:02,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:36:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 14:36:02,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 14:36:02,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 14:36:02,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223422326] [2023-11-23 14:36:02,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 14:36:02,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255715581] [2023-11-23 14:36:02,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255715581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 14:36:02,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 14:36:02,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 14:36:02,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40515407] [2023-11-23 14:36:02,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 14:36:02,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 14:36:02,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 14:36:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 14:36:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 14:36:02,866 INFO L87 Difference]: Start difference. First operand 721 states and 1026 transitions. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 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 14:36:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 14:36:03,224 INFO L93 Difference]: Finished difference Result 1338 states and 1916 transitions. [2023-11-23 14:36:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 14:36:03,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 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 183 [2023-11-23 14:36:03,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 14:36:03,228 INFO L225 Difference]: With dead ends: 1338 [2023-11-23 14:36:03,228 INFO L226 Difference]: Without dead ends: 735 [2023-11-23 14:36:03,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 14:36:03,231 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 10 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 14:36:03,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2085 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 14:36:03,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2023-11-23 14:36:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 731. [2023-11-23 14:36:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 720 states have (on average 1.4194444444444445) internal successors, (1022), 720 states have internal predecessors, (1022), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 14:36:03,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1040 transitions. [2023-11-23 14:36:03,251 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1040 transitions. Word has length 183 [2023-11-23 14:36:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 14:36:03,251 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 1040 transitions. [2023-11-23 14:36:03,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 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 14:36:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1040 transitions. [2023-11-23 14:36:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-23 14:36:03,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 14:36:03,254 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:03,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-23 14:36:03,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 14:36:03,469 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 14:36:03,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 14:36:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1561003159, now seen corresponding path program 1 times [2023-11-23 14:36:03,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 14:36:03,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701815075] [2023-11-23 14:36:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:36:03,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 14:36:03,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 14:36:03,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201858031] [2023-11-23 14:36:03,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 14:36:03,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 14:36:03,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 14:36:03,530 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 14:36:03,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 14:36:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 14:36:04,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 112 conjunts are in the unsatisfiable core [2023-11-23 14:36:04,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 14:36:04,187 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 14:36:04,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-23 14:36:04,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2023-11-23 14:36:04,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-23 14:36:04,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-23 14:36:04,663 INFO L349 Elim1Store]: treesize reduction 32, result has 30.4 percent of original size [2023-11-23 14:36:04,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 20 [2023-11-23 14:36:04,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-23 14:36:04,678 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 14:36:04,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 14:36:04,720 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 7 treesize of output 3 [2023-11-23 14:36:04,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 14:36:04,727 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 8 treesize of output 4 [2023-11-23 14:36:11,545 INFO L224 Elim1Store]: Index analysis took 283 ms