/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/memory-model/2SB.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:10:59,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:10:59,494 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:10:59,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:10:59,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:10:59,526 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:10:59,526 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:10:59,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:10:59,527 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:10:59,530 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:10:59,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:10:59,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:10:59,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:10:59,532 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:10:59,532 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:10:59,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:10:59,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:10:59,533 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:10:59,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:10:59,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:10:59,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:10:59,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:10:59,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:10:59,535 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:10:59,535 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:10:59,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:10:59,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:10:59,536 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:10:59,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:10:59,536 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:10:59,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:10:59,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:10:59,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:10:59,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:10:59,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:10:59,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:10:59,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:10:59,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:10:59,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:10:59,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:10:59,539 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:10:59,539 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:10:59,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:10:59,539 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:10:59,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:10:59,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:10:59,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:10:59,786 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:10:59,786 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:10:59,787 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memory-model/2SB.i [2023-12-15 18:11:00,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:11:01,112 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:11:01,113 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/memory-model/2SB.i [2023-12-15 18:11:01,126 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a07bd965/59eb339380a6494880e467cf91cb1a09/FLAGad36529e0 [2023-12-15 18:11:01,140 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a07bd965/59eb339380a6494880e467cf91cb1a09 [2023-12-15 18:11:01,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:11:01,143 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:11:01,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:11:01,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:11:01,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:11:01,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@162a84e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01, skipping insertion in model container [2023-12-15 18:11:01,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:11:01,413 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/memory-model/2SB.i[13547,13560] [2023-12-15 18:11:01,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:11:01,425 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:11:01,487 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/memory-model/2SB.i[13547,13560] [2023-12-15 18:11:01,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:11:01,502 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:11:01,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01 WrapperNode [2023-12-15 18:11:01,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:11:01,504 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:11:01,504 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:11:01,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:11:01,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,578 INFO L138 Inliner]: procedures = 28, calls = 405, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 920 [2023-12-15 18:11:01,579 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:11:01,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:11:01,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:11:01,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:11:01,590 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,602 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,649 INFO L175 MemorySlicer]: Split 302 memory accesses to 14 slices as follows [10, 4, 15, 48, 13, 37, 13, 76, 10, 40, 3, 10, 12, 11]. 25 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [1, 0, 0, 0, 5, 0, 5, 0, 0, 0, 0, 0, 5, 0]. The 119 writes are split as follows [3, 3, 5, 10, 2, 15, 2, 40, 5, 20, 2, 5, 2, 5]. [2023-12-15 18:11:01,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,670 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:11:01,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:11:01,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:11:01,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:11:01,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (1/1) ... [2023-12-15 18:11:01,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:11:01,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:01,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:11:01,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:11:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2023-12-15 18:11:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2023-12-15 18:11:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2023-12-15 18:11:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2023-12-15 18:11:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2023-12-15 18:11:01,852 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2023-12-15 18:11:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2023-12-15 18:11:01,853 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2023-12-15 18:11:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-12-15 18:11:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-12-15 18:11:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-12-15 18:11:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-12-15 18:11:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-12-15 18:11:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-12-15 18:11:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-12-15 18:11:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-12-15 18:11:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2023-12-15 18:11:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2023-12-15 18:11:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2023-12-15 18:11:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2023-12-15 18:11:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2023-12-15 18:11:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2023-12-15 18:11:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-15 18:11:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 18:11:01,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 18:11:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 18:11:01,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-12-15 18:11:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-12-15 18:11:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-12-15 18:11:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-12-15 18:11:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-12-15 18:11:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-12-15 18:11:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-12-15 18:11:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-12-15 18:11:01,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-12-15 18:11:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-12-15 18:11:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-12-15 18:11:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 18:11:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 18:11:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 18:11:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-12-15 18:11:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-12-15 18:11:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-12-15 18:11:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-12-15 18:11:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-12-15 18:11:01,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-12-15 18:11:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-12-15 18:11:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-12-15 18:11:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-12-15 18:11:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-12-15 18:11:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-12-15 18:11:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_2_conditions [2023-12-15 18:11:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_2_conditions [2023-12-15 18:11:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:11:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 18:11:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 18:11:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-12-15 18:11:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-12-15 18:11:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-12-15 18:11:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-12-15 18:11:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-12-15 18:11:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-12-15 18:11:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-12-15 18:11:01,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-12-15 18:11:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-12-15 18:11:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-12-15 18:11:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-12-15 18:11:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2023-12-15 18:11:01,864 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2023-12-15 18:11:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2023-12-15 18:11:01,864 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2023-12-15 18:11:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:11:01,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:11:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 18:11:02,069 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:11:02,071 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:11:02,884 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:11:02,938 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:11:02,938 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-15 18:11:02,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:11:02 BoogieIcfgContainer [2023-12-15 18:11:02,939 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:11:02,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:11:02,941 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:11:02,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:11:02,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:11:01" (1/3) ... [2023-12-15 18:11:02,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5874218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:11:02, skipping insertion in model container [2023-12-15 18:11:02,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:11:01" (2/3) ... [2023-12-15 18:11:02,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5874218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:11:02, skipping insertion in model container [2023-12-15 18:11:02,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:11:02" (3/3) ... [2023-12-15 18:11:02,945 INFO L112 eAbstractionObserver]: Analyzing ICFG 2SB.i [2023-12-15 18:11:02,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:11:02,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:11:02,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:11:03,002 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;@58321f7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:11:03,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:11:03,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 132 states have (on average 1.6136363636363635) internal successors, (213), 135 states have internal predecessors, (213), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-15 18:11:03,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:03,016 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:03,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:03,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:03,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1631832828, now seen corresponding path program 1 times [2023-12-15 18:11:03,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:03,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994399366] [2023-12-15 18:11:03,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:03,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:03,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 18:11:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:03,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 18:11:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:03,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:11:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:11:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 18:11:03,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:03,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994399366] [2023-12-15 18:11:03,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994399366] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:03,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492035696] [2023-12-15 18:11:03,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:03,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:03,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:03,413 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) [2023-12-15 18:11:03,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:11:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:03,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 18:11:03,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:11:03,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:11:03,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492035696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:03,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:11:03,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2023-12-15 18:11:03,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69876114] [2023-12-15 18:11:03,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:03,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:11:03,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:03,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:11:03,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:11:03,674 INFO L87 Difference]: Start difference. First operand has 155 states, 132 states have (on average 1.6136363636363635) internal successors, (213), 135 states have internal predecessors, (213), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2023-12-15 18:11:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:04,175 INFO L93 Difference]: Finished difference Result 308 states and 482 transitions. [2023-12-15 18:11:04,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:11:04,180 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 40 [2023-12-15 18:11:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:04,186 INFO L225 Difference]: With dead ends: 308 [2023-12-15 18:11:04,186 INFO L226 Difference]: Without dead ends: 147 [2023-12-15 18:11:04,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:11:04,193 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:04,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:11:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-15 18:11:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-12-15 18:11:04,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 125 states have (on average 1.328) internal successors, (166), 127 states have internal predecessors, (166), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 194 transitions. [2023-12-15 18:11:04,245 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 194 transitions. Word has length 40 [2023-12-15 18:11:04,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:04,246 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 194 transitions. [2023-12-15 18:11:04,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2023-12-15 18:11:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 194 transitions. [2023-12-15 18:11:04,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-15 18:11:04,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:04,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:04,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:11:04,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 18:11:04,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:04,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:04,453 INFO L85 PathProgramCache]: Analyzing trace with hash -707999250, now seen corresponding path program 1 times [2023-12-15 18:11:04,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:04,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344315349] [2023-12-15 18:11:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:04,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:04,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-15 18:11:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:04,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-15 18:11:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-15 18:11:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:04,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:11:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 18:11:04,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344315349] [2023-12-15 18:11:04,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344315349] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662555268] [2023-12-15 18:11:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:04,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:04,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:04,635 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) [2023-12-15 18:11:04,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:11:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:04,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:11:04,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:11:04,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:11:04,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662555268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:04,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:11:04,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 18:11:04,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135680805] [2023-12-15 18:11:04,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:04,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:04,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:04,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:04,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:04,844 INFO L87 Difference]: Start difference. First operand 147 states and 194 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2023-12-15 18:11:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:05,688 INFO L93 Difference]: Finished difference Result 293 states and 387 transitions. [2023-12-15 18:11:05,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:05,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 41 [2023-12-15 18:11:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:05,690 INFO L225 Difference]: With dead ends: 293 [2023-12-15 18:11:05,690 INFO L226 Difference]: Without dead ends: 148 [2023-12-15 18:11:05,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:05,691 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:05,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 357 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:11:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-15 18:11:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-12-15 18:11:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 126 states have (on average 1.3253968253968254) internal successors, (167), 128 states have internal predecessors, (167), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 195 transitions. [2023-12-15 18:11:05,700 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 195 transitions. Word has length 41 [2023-12-15 18:11:05,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:05,700 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 195 transitions. [2023-12-15 18:11:05,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2023-12-15 18:11:05,700 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 195 transitions. [2023-12-15 18:11:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-15 18:11:05,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:05,702 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:05,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 18:11:05,906 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,SelfDestructingSolverStorable1 [2023-12-15 18:11:05,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:05,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:05,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1485248369, now seen corresponding path program 1 times [2023-12-15 18:11:05,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:05,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741573459] [2023-12-15 18:11:05,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:05,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:06,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 18:11:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:06,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:11:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:11:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:06,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-15 18:11:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 18:11:06,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:06,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741573459] [2023-12-15 18:11:06,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741573459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:06,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340120577] [2023-12-15 18:11:06,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:06,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:06,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:06,077 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) [2023-12-15 18:11:06,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:11:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:06,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:11:06,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 18:11:06,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:11:06,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340120577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:06,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:11:06,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:11:06,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821430433] [2023-12-15 18:11:06,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:06,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:06,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:06,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:06,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:06,278 INFO L87 Difference]: Start difference. First operand 148 states and 195 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 18:11:07,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:07,117 INFO L93 Difference]: Finished difference Result 292 states and 387 transitions. [2023-12-15 18:11:07,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:07,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-12-15 18:11:07,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:07,119 INFO L225 Difference]: With dead ends: 292 [2023-12-15 18:11:07,119 INFO L226 Difference]: Without dead ends: 149 [2023-12-15 18:11:07,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:07,120 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:07,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:11:07,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-12-15 18:11:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-12-15 18:11:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 127 states have (on average 1.3228346456692914) internal successors, (168), 129 states have internal predecessors, (168), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:07,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 196 transitions. [2023-12-15 18:11:07,127 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 196 transitions. Word has length 42 [2023-12-15 18:11:07,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:07,134 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 196 transitions. [2023-12-15 18:11:07,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 18:11:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 196 transitions. [2023-12-15 18:11:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-15 18:11:07,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:07,135 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:07,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 18:11:07,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:07,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:07,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:07,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1550976507, now seen corresponding path program 1 times [2023-12-15 18:11:07,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:07,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012944659] [2023-12-15 18:11:07,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:07,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 18:11:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:11:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:07,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:11:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:11:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:11:07,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:07,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012944659] [2023-12-15 18:11:07,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012944659] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:07,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869841285] [2023-12-15 18:11:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:07,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:07,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:07,479 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) [2023-12-15 18:11:07,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 18:11:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:07,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:11:07,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 18:11:07,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:11:07,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869841285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:07,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:11:07,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:11:07,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284030032] [2023-12-15 18:11:07,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:07,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:07,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:07,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:07,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:07,692 INFO L87 Difference]: Start difference. First operand 149 states and 196 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 18:11:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:08,491 INFO L93 Difference]: Finished difference Result 284 states and 374 transitions. [2023-12-15 18:11:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:08,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 44 [2023-12-15 18:11:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:08,492 INFO L225 Difference]: With dead ends: 284 [2023-12-15 18:11:08,492 INFO L226 Difference]: Without dead ends: 156 [2023-12-15 18:11:08,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:08,493 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:08,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 345 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:11:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-15 18:11:08,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2023-12-15 18:11:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.3203125) internal successors, (169), 130 states have internal predecessors, (169), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 197 transitions. [2023-12-15 18:11:08,501 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 197 transitions. Word has length 44 [2023-12-15 18:11:08,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:08,501 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 197 transitions. [2023-12-15 18:11:08,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 18:11:08,501 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 197 transitions. [2023-12-15 18:11:08,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-15 18:11:08,502 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:08,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:08,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 18:11:08,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:08,708 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:08,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:08,708 INFO L85 PathProgramCache]: Analyzing trace with hash 594470631, now seen corresponding path program 1 times [2023-12-15 18:11:08,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:08,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219530067] [2023-12-15 18:11:08,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:08,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:08,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 18:11:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:08,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:11:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:11:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:08,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-15 18:11:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 18:11:08,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:08,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219530067] [2023-12-15 18:11:08,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219530067] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:08,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006219437] [2023-12-15 18:11:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:08,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:08,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:08,815 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) [2023-12-15 18:11:08,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 18:11:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:09,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:11:09,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 18:11:09,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:11:09,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006219437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:09,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:11:09,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:11:09,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400744904] [2023-12-15 18:11:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:09,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:09,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:09,066 INFO L87 Difference]: Start difference. First operand 150 states and 197 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 18:11:09,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:09,938 INFO L93 Difference]: Finished difference Result 275 states and 363 transitions. [2023-12-15 18:11:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:09,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-12-15 18:11:09,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:09,939 INFO L225 Difference]: With dead ends: 275 [2023-12-15 18:11:09,939 INFO L226 Difference]: Without dead ends: 157 [2023-12-15 18:11:09,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:09,940 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:09,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 345 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:11:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-15 18:11:09,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2023-12-15 18:11:09,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 129 states have (on average 1.317829457364341) internal successors, (170), 131 states have internal predecessors, (170), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:09,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2023-12-15 18:11:09,958 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 47 [2023-12-15 18:11:09,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:09,958 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2023-12-15 18:11:09,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 18:11:09,958 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2023-12-15 18:11:09,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-15 18:11:09,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:09,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:09,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 18:11:10,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:10,164 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:10,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:10,165 INFO L85 PathProgramCache]: Analyzing trace with hash -976296171, now seen corresponding path program 1 times [2023-12-15 18:11:10,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:10,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064805754] [2023-12-15 18:11:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:10,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:10,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 18:11:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:10,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:11:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:11:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:10,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:11:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-15 18:11:10,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:10,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064805754] [2023-12-15 18:11:10,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064805754] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:10,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400096752] [2023-12-15 18:11:10,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:10,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:10,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:10,275 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) [2023-12-15 18:11:10,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 18:11:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:10,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:11:10,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:11:10,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:11:10,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400096752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:10,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:11:10,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:11:10,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846097582] [2023-12-15 18:11:10,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:10,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:10,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:10,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:10,515 INFO L87 Difference]: Start difference. First operand 151 states and 198 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-12-15 18:11:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:11,508 INFO L93 Difference]: Finished difference Result 187 states and 253 transitions. [2023-12-15 18:11:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 50 [2023-12-15 18:11:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:11,509 INFO L225 Difference]: With dead ends: 187 [2023-12-15 18:11:11,509 INFO L226 Difference]: Without dead ends: 181 [2023-12-15 18:11:11,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:11,510 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 47 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:11,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 309 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:11:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-15 18:11:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 152. [2023-12-15 18:11:11,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 130 states have (on average 1.3153846153846154) internal successors, (171), 132 states have internal predecessors, (171), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 199 transitions. [2023-12-15 18:11:11,516 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 199 transitions. Word has length 50 [2023-12-15 18:11:11,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:11,516 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 199 transitions. [2023-12-15 18:11:11,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-12-15 18:11:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 199 transitions. [2023-12-15 18:11:11,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:11:11,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:11,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:11,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 18:11:11,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:11,722 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:11,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1674374375, now seen corresponding path program 1 times [2023-12-15 18:11:11,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:11,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460567035] [2023-12-15 18:11:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:11,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:11,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 18:11:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:11,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:11:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:11,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:11:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:11:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:11:11,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:11,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460567035] [2023-12-15 18:11:11,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460567035] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:11,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307253064] [2023-12-15 18:11:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:11,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:11,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:11,934 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) [2023-12-15 18:11:11,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 18:11:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:12,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:11:12,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:11:12,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:11:12,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307253064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:12,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:11:12,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:11:12,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905610739] [2023-12-15 18:11:12,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:12,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:12,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:12,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:12,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:12,191 INFO L87 Difference]: Start difference. First operand 152 states and 199 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-12-15 18:11:13,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:13,186 INFO L93 Difference]: Finished difference Result 189 states and 256 transitions. [2023-12-15 18:11:13,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:13,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 60 [2023-12-15 18:11:13,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:13,188 INFO L225 Difference]: With dead ends: 189 [2023-12-15 18:11:13,188 INFO L226 Difference]: Without dead ends: 153 [2023-12-15 18:11:13,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:13,189 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:13,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:11:13,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-12-15 18:11:13,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-12-15 18:11:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 133 states have internal predecessors, (172), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:13,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 200 transitions. [2023-12-15 18:11:13,208 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 200 transitions. Word has length 60 [2023-12-15 18:11:13,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:13,208 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 200 transitions. [2023-12-15 18:11:13,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-12-15 18:11:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 200 transitions. [2023-12-15 18:11:13,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:11:13,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:13,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:13,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 18:11:13,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:13,416 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:13,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:13,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1940534551, now seen corresponding path program 1 times [2023-12-15 18:11:13,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:13,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380675689] [2023-12-15 18:11:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:13,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 18:11:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:11:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:13,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:11:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:11:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:11:13,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:13,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380675689] [2023-12-15 18:11:13,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380675689] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:13,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658096090] [2023-12-15 18:11:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:13,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:13,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:13,592 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) [2023-12-15 18:11:13,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 18:11:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:13,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:11:13,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:13,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-15 18:11:13,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:11:13,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658096090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:13,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:11:13,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:11:13,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120837540] [2023-12-15 18:11:13,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:13,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:13,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:13,890 INFO L87 Difference]: Start difference. First operand 153 states and 200 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-12-15 18:11:14,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:14,696 INFO L93 Difference]: Finished difference Result 190 states and 256 transitions. [2023-12-15 18:11:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:14,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 60 [2023-12-15 18:11:14,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:14,698 INFO L225 Difference]: With dead ends: 190 [2023-12-15 18:11:14,698 INFO L226 Difference]: Without dead ends: 184 [2023-12-15 18:11:14,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:14,698 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 37 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:14,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 352 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:11:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-15 18:11:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2023-12-15 18:11:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 161 states have (on average 1.3664596273291925) internal successors, (220), 163 states have internal predecessors, (220), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:14,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 248 transitions. [2023-12-15 18:11:14,703 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 248 transitions. Word has length 60 [2023-12-15 18:11:14,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:14,704 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 248 transitions. [2023-12-15 18:11:14,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-12-15 18:11:14,704 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 248 transitions. [2023-12-15 18:11:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 18:11:14,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:14,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:14,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 18:11:14,910 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,SelfDestructingSolverStorable7 [2023-12-15 18:11:14,910 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:14,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:14,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1413461973, now seen corresponding path program 1 times [2023-12-15 18:11:14,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:14,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713864852] [2023-12-15 18:11:14,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:14,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:14,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 18:11:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:14,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:11:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:15,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:11:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:15,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:11:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:11:15,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:15,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713864852] [2023-12-15 18:11:15,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713864852] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:15,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529337991] [2023-12-15 18:11:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:15,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:15,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:15,049 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) [2023-12-15 18:11:15,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 18:11:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:15,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:11:15,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-15 18:11:15,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:11:15,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529337991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:15,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:11:15,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:11:15,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680963442] [2023-12-15 18:11:15,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:15,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:15,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:15,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:15,330 INFO L87 Difference]: Start difference. First operand 183 states and 248 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (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) [2023-12-15 18:11:16,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:16,235 INFO L93 Difference]: Finished difference Result 251 states and 353 transitions. [2023-12-15 18:11:16,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:16,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (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 74 [2023-12-15 18:11:16,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:16,236 INFO L225 Difference]: With dead ends: 251 [2023-12-15 18:11:16,236 INFO L226 Difference]: Without dead ends: 245 [2023-12-15 18:11:16,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:16,237 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 23 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:16,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 352 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:11:16,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-15 18:11:16,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2023-12-15 18:11:16,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 223 states have (on average 1.4260089686098654) internal successors, (318), 225 states have internal predecessors, (318), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:16,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 346 transitions. [2023-12-15 18:11:16,243 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 346 transitions. Word has length 74 [2023-12-15 18:11:16,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:16,243 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 346 transitions. [2023-12-15 18:11:16,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (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) [2023-12-15 18:11:16,243 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 346 transitions. [2023-12-15 18:11:16,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-15 18:11:16,244 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:16,244 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:16,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 18:11:16,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:16,449 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:16,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:16,450 INFO L85 PathProgramCache]: Analyzing trace with hash 58504681, now seen corresponding path program 1 times [2023-12-15 18:11:16,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:16,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429679076] [2023-12-15 18:11:16,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:16,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:16,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 18:11:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:16,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:11:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:11:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:16,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:11:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-15 18:11:16,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:16,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429679076] [2023-12-15 18:11:16,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429679076] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:16,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633927453] [2023-12-15 18:11:16,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:16,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:16,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:16,616 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) [2023-12-15 18:11:16,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 18:11:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:16,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:11:16,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-15 18:11:16,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:11:16,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633927453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:16,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:11:16,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:11:16,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702527472] [2023-12-15 18:11:16,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:16,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:16,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:16,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:16,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:16,981 INFO L87 Difference]: Start difference. First operand 245 states and 346 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-12-15 18:11:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:17,711 INFO L93 Difference]: Finished difference Result 375 states and 549 transitions. [2023-12-15 18:11:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:17,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 90 [2023-12-15 18:11:17,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:17,713 INFO L225 Difference]: With dead ends: 375 [2023-12-15 18:11:17,713 INFO L226 Difference]: Without dead ends: 369 [2023-12-15 18:11:17,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:17,714 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 22 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:17,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 353 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:11:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-12-15 18:11:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-12-15 18:11:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 347 states have (on average 1.4812680115273775) internal successors, (514), 349 states have internal predecessors, (514), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 542 transitions. [2023-12-15 18:11:17,721 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 542 transitions. Word has length 90 [2023-12-15 18:11:17,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:17,721 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 542 transitions. [2023-12-15 18:11:17,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-12-15 18:11:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 542 transitions. [2023-12-15 18:11:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 18:11:17,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:17,723 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:17,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 18:11:17,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 18:11:17,929 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:17,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1840084245, now seen corresponding path program 1 times [2023-12-15 18:11:17,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:17,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670466825] [2023-12-15 18:11:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:17,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:18,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 18:11:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:18,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:11:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:18,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:11:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:18,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:11:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-15 18:11:18,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:18,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670466825] [2023-12-15 18:11:18,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670466825] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:18,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065064002] [2023-12-15 18:11:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:18,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:18,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:18,076 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:11:18,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 18:11:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:18,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:11:18,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-15 18:11:18,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:11:18,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065064002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:18,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:11:18,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:11:18,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656334675] [2023-12-15 18:11:18,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:18,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:18,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:18,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:18,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:18,433 INFO L87 Difference]: Start difference. First operand 369 states and 542 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-12-15 18:11:19,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:19,347 INFO L93 Difference]: Finished difference Result 623 states and 941 transitions. [2023-12-15 18:11:19,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:19,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 100 [2023-12-15 18:11:19,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:19,350 INFO L225 Difference]: With dead ends: 623 [2023-12-15 18:11:19,350 INFO L226 Difference]: Without dead ends: 617 [2023-12-15 18:11:19,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:19,351 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 20 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:19,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 351 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:11:19,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-15 18:11:19,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2023-12-15 18:11:19,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 595 states have (on average 1.522689075630252) internal successors, (906), 597 states have internal predecessors, (906), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 934 transitions. [2023-12-15 18:11:19,365 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 934 transitions. Word has length 100 [2023-12-15 18:11:19,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:19,366 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 934 transitions. [2023-12-15 18:11:19,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-12-15 18:11:19,366 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 934 transitions. [2023-12-15 18:11:19,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-15 18:11:19,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:19,367 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:19,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 18:11:19,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 18:11:19,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:19,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:19,573 INFO L85 PathProgramCache]: Analyzing trace with hash 394013531, now seen corresponding path program 1 times [2023-12-15 18:11:19,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:19,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003562113] [2023-12-15 18:11:19,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:19,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:19,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-15 18:11:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:19,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:11:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-15 18:11:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-15 18:11:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-15 18:11:19,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:19,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003562113] [2023-12-15 18:11:19,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003562113] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:19,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794107934] [2023-12-15 18:11:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:19,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:19,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:19,792 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:11:19,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 18:11:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:20,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:11:20,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-15 18:11:20,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:11:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-15 18:11:20,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794107934] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:11:20,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:11:20,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 4] total 9 [2023-12-15 18:11:20,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053919220] [2023-12-15 18:11:20,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:11:20,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:11:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:20,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:11:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:11:20,157 INFO L87 Difference]: Start difference. First operand 617 states and 934 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-15 18:11:22,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:22,005 INFO L93 Difference]: Finished difference Result 1234 states and 1870 transitions. [2023-12-15 18:11:22,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:11:22,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 130 [2023-12-15 18:11:22,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:22,013 INFO L225 Difference]: With dead ends: 1234 [2023-12-15 18:11:22,013 INFO L226 Difference]: Without dead ends: 620 [2023-12-15 18:11:22,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:11:22,015 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 47 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:22,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 695 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 18:11:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-12-15 18:11:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2023-12-15 18:11:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 598 states have (on average 1.520066889632107) internal successors, (909), 600 states have internal predecessors, (909), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:22,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 937 transitions. [2023-12-15 18:11:22,055 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 937 transitions. Word has length 130 [2023-12-15 18:11:22,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:22,055 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 937 transitions. [2023-12-15 18:11:22,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 1 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-12-15 18:11:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 937 transitions. [2023-12-15 18:11:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-15 18:11:22,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:22,057 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:22,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 18:11:22,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 18:11:22,257 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:22,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:22,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1076598680, now seen corresponding path program 2 times [2023-12-15 18:11:22,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:22,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333564716] [2023-12-15 18:11:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:22,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-15 18:11:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:22,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-15 18:11:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:22,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-15 18:11:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:22,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-15 18:11:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-15 18:11:22,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:22,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333564716] [2023-12-15 18:11:22,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333564716] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:22,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466818753] [2023-12-15 18:11:22,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 18:11:22,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:22,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:22,457 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:11:22,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 18:11:23,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 18:11:23,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 18:11:23,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 18:11:23,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-15 18:11:23,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:11:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-15 18:11:23,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466818753] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:11:23,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:11:23,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 15 [2023-12-15 18:11:23,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706607524] [2023-12-15 18:11:23,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:11:23,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-15 18:11:23,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:23,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-15 18:11:23,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-12-15 18:11:23,592 INFO L87 Difference]: Start difference. First operand 620 states and 937 transitions. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 13 states have internal predecessors, (93), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-15 18:11:27,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:27,377 INFO L93 Difference]: Finished difference Result 1240 states and 1881 transitions. [2023-12-15 18:11:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:11:27,377 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 13 states have internal predecessors, (93), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 133 [2023-12-15 18:11:27,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:27,379 INFO L225 Difference]: With dead ends: 1240 [2023-12-15 18:11:27,379 INFO L226 Difference]: Without dead ends: 626 [2023-12-15 18:11:27,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-15 18:11:27,380 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 48 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:27,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1431 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-15 18:11:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-12-15 18:11:27,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2023-12-15 18:11:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 604 states have (on average 1.5149006622516556) internal successors, (915), 606 states have internal predecessors, (915), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-15 18:11:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 943 transitions. [2023-12-15 18:11:27,391 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 943 transitions. Word has length 133 [2023-12-15 18:11:27,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:27,391 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 943 transitions. [2023-12-15 18:11:27,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 13 states have internal predecessors, (93), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-15 18:11:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 943 transitions. [2023-12-15 18:11:27,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-15 18:11:27,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:27,393 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:27,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-15 18:11:27,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 18:11:27,599 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:27,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:27,600 INFO L85 PathProgramCache]: Analyzing trace with hash 943145735, now seen corresponding path program 3 times [2023-12-15 18:11:27,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:27,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520604814] [2023-12-15 18:11:27,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:27,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:27,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:11:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:27,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:11:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:27,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:11:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:27,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-15 18:11:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-15 18:11:27,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:27,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520604814] [2023-12-15 18:11:27,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520604814] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:27,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405855486] [2023-12-15 18:11:27,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 18:11:27,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:27,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:27,863 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:11:27,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 18:11:28,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-15 18:11:28,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 18:11:28,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-15 18:11:28,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:29,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 179 [2023-12-15 18:11:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-15 18:11:29,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:11:29,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405855486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:29,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:11:29,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-12-15 18:11:29,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612889041] [2023-12-15 18:11:29,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:29,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:11:29,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:11:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:11:29,688 INFO L87 Difference]: Start difference. First operand 626 states and 943 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 18:11:33,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:33,018 INFO L93 Difference]: Finished difference Result 1767 states and 2703 transitions. [2023-12-15 18:11:33,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 18:11:33,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 140 [2023-12-15 18:11:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:33,021 INFO L225 Difference]: With dead ends: 1767 [2023-12-15 18:11:33,021 INFO L226 Difference]: Without dead ends: 1258 [2023-12-15 18:11:33,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-15 18:11:33,022 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 234 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:33,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1062 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-15 18:11:33,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2023-12-15 18:11:33,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 653. [2023-12-15 18:11:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 627 states have (on average 1.5055821371610845) internal successors, (944), 631 states have internal predecessors, (944), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-15 18:11:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 980 transitions. [2023-12-15 18:11:33,045 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 980 transitions. Word has length 140 [2023-12-15 18:11:33,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:33,045 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 980 transitions. [2023-12-15 18:11:33,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-15 18:11:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 980 transitions. [2023-12-15 18:11:33,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-15 18:11:33,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:33,047 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:33,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-15 18:11:33,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:33,253 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:33,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:33,254 INFO L85 PathProgramCache]: Analyzing trace with hash 485450369, now seen corresponding path program 1 times [2023-12-15 18:11:33,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:33,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238754888] [2023-12-15 18:11:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:33,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:11:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:33,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:11:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:11:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:33,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-15 18:11:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-15 18:11:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-15 18:11:33,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:33,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238754888] [2023-12-15 18:11:33,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238754888] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:33,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248457191] [2023-12-15 18:11:33,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:33,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:33,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:33,531 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:11:33,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 18:11:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:33,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 18:11:33,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-15 18:11:33,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:11:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-15 18:11:33,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248457191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:11:33,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:11:33,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-12-15 18:11:33,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446768086] [2023-12-15 18:11:33,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:11:33,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:11:33,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:33,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:11:33,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:11:33,990 INFO L87 Difference]: Start difference. First operand 653 states and 980 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:11:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:35,553 INFO L93 Difference]: Finished difference Result 1296 states and 1952 transitions. [2023-12-15 18:11:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:11:35,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 154 [2023-12-15 18:11:35,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:35,556 INFO L225 Difference]: With dead ends: 1296 [2023-12-15 18:11:35,556 INFO L226 Difference]: Without dead ends: 674 [2023-12-15 18:11:35,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-15 18:11:35,558 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 84 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:35,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 533 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 18:11:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-12-15 18:11:35,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2023-12-15 18:11:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 645 states have (on average 1.496124031007752) internal successors, (965), 649 states have internal predecessors, (965), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-15 18:11:35,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1007 transitions. [2023-12-15 18:11:35,576 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1007 transitions. Word has length 154 [2023-12-15 18:11:35,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:35,577 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 1007 transitions. [2023-12-15 18:11:35,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 7 states have internal predecessors, (96), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:11:35,577 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1007 transitions. [2023-12-15 18:11:35,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-15 18:11:35,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:35,578 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:35,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 18:11:35,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-15 18:11:35,785 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:35,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:35,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1075293643, now seen corresponding path program 2 times [2023-12-15 18:11:35,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:35,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36186833] [2023-12-15 18:11:35,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:35,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:35,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:11:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:35,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:11:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:35,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:11:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-15 18:11:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:35,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-15 18:11:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2023-12-15 18:11:35,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:35,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36186833] [2023-12-15 18:11:35,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36186833] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:11:35,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894779405] [2023-12-15 18:11:35,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 18:11:35,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:11:36,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:11:36,018 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:11:36,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 18:11:37,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 18:11:37,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 18:11:37,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 18:11:37,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:11:37,297 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-15 18:11:37,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:11:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-12-15 18:11:37,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894779405] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:11:37,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:11:37,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-12-15 18:11:37,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761570139] [2023-12-15 18:11:37,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:11:37,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 18:11:37,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 18:11:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:11:37,362 INFO L87 Difference]: Start difference. First operand 674 states and 1007 transitions. Second operand has 16 states, 16 states have (on average 7.5) internal successors, (120), 13 states have internal predecessors, (120), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:11:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:39,695 INFO L93 Difference]: Finished difference Result 1344 states and 2017 transitions. [2023-12-15 18:11:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 18:11:39,695 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.5) internal successors, (120), 13 states have internal predecessors, (120), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 163 [2023-12-15 18:11:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:39,697 INFO L225 Difference]: With dead ends: 1344 [2023-12-15 18:11:39,697 INFO L226 Difference]: Without dead ends: 722 [2023-12-15 18:11:39,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-12-15 18:11:39,698 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 122 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:39,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 823 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 18:11:39,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-12-15 18:11:39,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 716. [2023-12-15 18:11:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 681 states have (on average 1.4787077826725403) internal successors, (1007), 685 states have internal predecessors, (1007), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:11:39,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1061 transitions. [2023-12-15 18:11:39,768 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1061 transitions. Word has length 163 [2023-12-15 18:11:39,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:39,769 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1061 transitions. [2023-12-15 18:11:39,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.5) internal successors, (120), 13 states have internal predecessors, (120), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:11:39,769 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1061 transitions. [2023-12-15 18:11:39,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:11:39,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:39,771 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:39,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 18:11:39,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 18:11:39,972 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:39,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash 822500411, now seen corresponding path program 3 times [2023-12-15 18:11:39,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:39,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516012276] [2023-12-15 18:11:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:39,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:40,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:11:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:40,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:11:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:11:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:11:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:11:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:40,426 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-12-15 18:11:40,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:40,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516012276] [2023-12-15 18:11:40,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516012276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:40,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:40,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:11:40,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654109582] [2023-12-15 18:11:40,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:40,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:11:40,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:40,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:11:40,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:11:40,429 INFO L87 Difference]: Start difference. First operand 716 states and 1061 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:42,689 INFO L93 Difference]: Finished difference Result 1762 states and 2716 transitions. [2023-12-15 18:11:42,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:11:42,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2023-12-15 18:11:42,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:42,692 INFO L225 Difference]: With dead ends: 1762 [2023-12-15 18:11:42,692 INFO L226 Difference]: Without dead ends: 1260 [2023-12-15 18:11:42,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:11:42,693 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 109 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:42,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 690 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 18:11:42,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2023-12-15 18:11:42,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 860. [2023-12-15 18:11:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 825 states have (on average 1.4727272727272727) internal successors, (1215), 829 states have internal predecessors, (1215), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:11:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1269 transitions. [2023-12-15 18:11:42,715 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1269 transitions. Word has length 181 [2023-12-15 18:11:42,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:42,716 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1269 transitions. [2023-12-15 18:11:42,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:42,716 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1269 transitions. [2023-12-15 18:11:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:11:42,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:42,717 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:42,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:11:42,718 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:42,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:42,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1308960703, now seen corresponding path program 1 times [2023-12-15 18:11:42,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:42,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389778802] [2023-12-15 18:11:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:42,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:11:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:42,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:11:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:42,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:11:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:11:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:42,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:11:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-15 18:11:42,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:42,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389778802] [2023-12-15 18:11:42,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389778802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:42,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:42,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:11:42,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795607023] [2023-12-15 18:11:42,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:42,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:11:42,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:42,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:11:42,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:42,906 INFO L87 Difference]: Start difference. First operand 860 states and 1269 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:44,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:44,816 INFO L93 Difference]: Finished difference Result 1634 states and 2476 transitions. [2023-12-15 18:11:44,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:11:44,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2023-12-15 18:11:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:44,819 INFO L225 Difference]: With dead ends: 1634 [2023-12-15 18:11:44,819 INFO L226 Difference]: Without dead ends: 988 [2023-12-15 18:11:44,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:11:44,821 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 59 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:44,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 774 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 18:11:44,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2023-12-15 18:11:44,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 892. [2023-12-15 18:11:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 857 states have (on average 1.4550758459743292) internal successors, (1247), 861 states have internal predecessors, (1247), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:11:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1301 transitions. [2023-12-15 18:11:44,843 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1301 transitions. Word has length 181 [2023-12-15 18:11:44,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:44,843 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1301 transitions. [2023-12-15 18:11:44,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:44,843 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1301 transitions. [2023-12-15 18:11:44,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:11:44,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:44,845 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:44,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:11:44,846 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:44,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:44,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1741331911, now seen corresponding path program 1 times [2023-12-15 18:11:44,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:44,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788644096] [2023-12-15 18:11:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:44,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:45,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:11:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:45,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:11:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:11:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:45,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:11:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:11:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-12-15 18:11:45,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:45,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788644096] [2023-12-15 18:11:45,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788644096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:45,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:45,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:11:45,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092321277] [2023-12-15 18:11:45,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:45,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:11:45,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:45,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:11:45,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:45,052 INFO L87 Difference]: Start difference. First operand 892 states and 1301 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:46,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:46,910 INFO L93 Difference]: Finished difference Result 1634 states and 2444 transitions. [2023-12-15 18:11:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:11:46,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2023-12-15 18:11:46,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:46,913 INFO L225 Difference]: With dead ends: 1634 [2023-12-15 18:11:46,913 INFO L226 Difference]: Without dead ends: 956 [2023-12-15 18:11:46,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:11:46,915 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 50 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:46,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 774 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 18:11:46,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-12-15 18:11:46,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 940. [2023-12-15 18:11:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 905 states have (on average 1.430939226519337) internal successors, (1295), 909 states have internal predecessors, (1295), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:11:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1349 transitions. [2023-12-15 18:11:46,957 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1349 transitions. Word has length 181 [2023-12-15 18:11:46,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:46,957 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1349 transitions. [2023-12-15 18:11:46,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:46,957 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1349 transitions. [2023-12-15 18:11:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:11:46,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:46,959 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:46,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:11:46,959 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:46,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:46,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1566483511, now seen corresponding path program 1 times [2023-12-15 18:11:46,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:46,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121588983] [2023-12-15 18:11:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:46,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:11:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:11:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:47,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:11:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:47,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:11:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:47,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:11:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-15 18:11:47,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:47,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121588983] [2023-12-15 18:11:47,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121588983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:47,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:47,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:11:47,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283824636] [2023-12-15 18:11:47,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:47,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:11:47,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:47,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:11:47,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:47,172 INFO L87 Difference]: Start difference. First operand 940 states and 1349 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:48,879 INFO L93 Difference]: Finished difference Result 1762 states and 2572 transitions. [2023-12-15 18:11:48,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:11:48,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2023-12-15 18:11:48,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:48,882 INFO L225 Difference]: With dead ends: 1762 [2023-12-15 18:11:48,882 INFO L226 Difference]: Without dead ends: 1036 [2023-12-15 18:11:48,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:11:48,883 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 61 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:48,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 839 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 18:11:48,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2023-12-15 18:11:48,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 940. [2023-12-15 18:11:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 905 states have (on average 1.4132596685082872) internal successors, (1279), 909 states have internal predecessors, (1279), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:11:48,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1333 transitions. [2023-12-15 18:11:48,905 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1333 transitions. Word has length 181 [2023-12-15 18:11:48,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:48,905 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1333 transitions. [2023-12-15 18:11:48,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1333 transitions. [2023-12-15 18:11:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:11:48,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:48,908 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:48,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:11:48,908 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:48,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:48,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1039540043, now seen corresponding path program 1 times [2023-12-15 18:11:48,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:48,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926249081] [2023-12-15 18:11:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:48,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:49,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:11:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:49,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:11:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:11:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:11:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:49,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:11:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-15 18:11:49,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:49,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926249081] [2023-12-15 18:11:49,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926249081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:49,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:49,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:11:49,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572426444] [2023-12-15 18:11:49,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:49,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:11:49,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:11:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:49,105 INFO L87 Difference]: Start difference. First operand 940 states and 1333 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:51,030 INFO L93 Difference]: Finished difference Result 1826 states and 2636 transitions. [2023-12-15 18:11:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:11:51,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2023-12-15 18:11:51,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:51,033 INFO L225 Difference]: With dead ends: 1826 [2023-12-15 18:11:51,033 INFO L226 Difference]: Without dead ends: 1100 [2023-12-15 18:11:51,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:11:51,034 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 55 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:51,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 814 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 18:11:51,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2023-12-15 18:11:51,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 972. [2023-12-15 18:11:51,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 937 states have (on average 1.3820704375667023) internal successors, (1295), 941 states have internal predecessors, (1295), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:11:51,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1349 transitions. [2023-12-15 18:11:51,054 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1349 transitions. Word has length 181 [2023-12-15 18:11:51,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:51,054 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1349 transitions. [2023-12-15 18:11:51,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:51,055 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1349 transitions. [2023-12-15 18:11:51,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:11:51,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:51,056 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:51,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:11:51,056 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:51,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:51,057 INFO L85 PathProgramCache]: Analyzing trace with hash -548807859, now seen corresponding path program 1 times [2023-12-15 18:11:51,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:51,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71083481] [2023-12-15 18:11:51,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:51,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:51,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:11:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:51,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:11:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:51,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:11:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:51,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:11:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:51,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:11:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-15 18:11:51,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:51,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71083481] [2023-12-15 18:11:51,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71083481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:51,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:51,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:11:51,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443099200] [2023-12-15 18:11:51,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:51,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:11:51,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:51,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:11:51,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:11:51,390 INFO L87 Difference]: Start difference. First operand 972 states and 1349 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:53,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:53,487 INFO L93 Difference]: Finished difference Result 2098 states and 2988 transitions. [2023-12-15 18:11:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:11:53,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2023-12-15 18:11:53,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:53,490 INFO L225 Difference]: With dead ends: 2098 [2023-12-15 18:11:53,491 INFO L226 Difference]: Without dead ends: 1340 [2023-12-15 18:11:53,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:11:53,492 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 90 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:53,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 710 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 18:11:53,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2023-12-15 18:11:53,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1164. [2023-12-15 18:11:53,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1129 states have (on average 1.3879539415411868) internal successors, (1567), 1133 states have internal predecessors, (1567), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:11:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1621 transitions. [2023-12-15 18:11:53,529 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1621 transitions. Word has length 181 [2023-12-15 18:11:53,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:53,530 INFO L495 AbstractCegarLoop]: Abstraction has 1164 states and 1621 transitions. [2023-12-15 18:11:53,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 5 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1621 transitions. [2023-12-15 18:11:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:11:53,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:53,532 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:53,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:11:53,532 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:53,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:53,532 INFO L85 PathProgramCache]: Analyzing trace with hash -966204465, now seen corresponding path program 1 times [2023-12-15 18:11:53,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:53,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788095879] [2023-12-15 18:11:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:53,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:11:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:53,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:11:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:11:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:53,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:11:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:11:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-15 18:11:53,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:53,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788095879] [2023-12-15 18:11:53,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788095879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:53,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:53,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:11:53,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824792499] [2023-12-15 18:11:53,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:53,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:11:53,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:53,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:11:53,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:53,741 INFO L87 Difference]: Start difference. First operand 1164 states and 1621 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:55,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:55,770 INFO L93 Difference]: Finished difference Result 2242 states and 3180 transitions. [2023-12-15 18:11:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:11:55,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2023-12-15 18:11:55,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:55,774 INFO L225 Difference]: With dead ends: 2242 [2023-12-15 18:11:55,774 INFO L226 Difference]: Without dead ends: 1292 [2023-12-15 18:11:55,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:11:55,776 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 61 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:55,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 676 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 18:11:55,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2023-12-15 18:11:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1196. [2023-12-15 18:11:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1161 states have (on average 1.3772609819121446) internal successors, (1599), 1165 states have internal predecessors, (1599), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:11:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1653 transitions. [2023-12-15 18:11:55,805 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1653 transitions. Word has length 181 [2023-12-15 18:11:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:55,805 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1653 transitions. [2023-12-15 18:11:55,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:55,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1653 transitions. [2023-12-15 18:11:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:11:55,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:55,808 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:55,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:11:55,808 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:55,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:55,809 INFO L85 PathProgramCache]: Analyzing trace with hash 995370193, now seen corresponding path program 1 times [2023-12-15 18:11:55,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:55,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754123683] [2023-12-15 18:11:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:55,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:55,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:11:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:55,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:11:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:55,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:11:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:56,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:11:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:56,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:11:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-15 18:11:56,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:56,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754123683] [2023-12-15 18:11:56,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754123683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:56,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:56,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:11:56,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706430372] [2023-12-15 18:11:56,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:56,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:11:56,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:56,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:11:56,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:11:56,034 INFO L87 Difference]: Start difference. First operand 1196 states and 1653 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:57,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:57,711 INFO L93 Difference]: Finished difference Result 2242 states and 3148 transitions. [2023-12-15 18:11:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:11:57,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2023-12-15 18:11:57,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:57,714 INFO L225 Difference]: With dead ends: 2242 [2023-12-15 18:11:57,715 INFO L226 Difference]: Without dead ends: 1260 [2023-12-15 18:11:57,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:11:57,716 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 52 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:57,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 675 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 18:11:57,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2023-12-15 18:11:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1244. [2023-12-15 18:11:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1209 states have (on average 1.3622828784119108) internal successors, (1647), 1213 states have internal predecessors, (1647), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:11:57,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1701 transitions. [2023-12-15 18:11:57,739 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1701 transitions. Word has length 181 [2023-12-15 18:11:57,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:57,739 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1701 transitions. [2023-12-15 18:11:57,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:11:57,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1701 transitions. [2023-12-15 18:11:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:11:57,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:57,741 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:57,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:11:57,742 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:57,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:57,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1633436877, now seen corresponding path program 2 times [2023-12-15 18:11:57,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:57,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876975354] [2023-12-15 18:11:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:57,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:11:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:11:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:58,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:11:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:11:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:58,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:11:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:58,061 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-12-15 18:11:58,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:58,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876975354] [2023-12-15 18:11:58,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876975354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:58,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:58,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:11:58,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740149230] [2023-12-15 18:11:58,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:58,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:11:58,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:58,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:11:58,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:11:58,063 INFO L87 Difference]: Start difference. First operand 1244 states and 1701 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:12:00,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:12:00,140 INFO L93 Difference]: Finished difference Result 2706 states and 3708 transitions. [2023-12-15 18:12:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:12:00,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2023-12-15 18:12:00,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:12:00,144 INFO L225 Difference]: With dead ends: 2706 [2023-12-15 18:12:00,144 INFO L226 Difference]: Without dead ends: 1676 [2023-12-15 18:12:00,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:12:00,146 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 114 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:12:00,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 864 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-15 18:12:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2023-12-15 18:12:00,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1340. [2023-12-15 18:12:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1305 states have (on average 1.3233716475095785) internal successors, (1727), 1309 states have internal predecessors, (1727), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:12:00,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1781 transitions. [2023-12-15 18:12:00,174 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1781 transitions. Word has length 181 [2023-12-15 18:12:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:12:00,175 INFO L495 AbstractCegarLoop]: Abstraction has 1340 states and 1781 transitions. [2023-12-15 18:12:00,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 5 states have internal predecessors, (119), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:12:00,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1781 transitions. [2023-12-15 18:12:00,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:12:00,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:12:00,177 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:12:00,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 18:12:00,177 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:12:00,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:12:00,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2001998897, now seen corresponding path program 1 times [2023-12-15 18:12:00,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:12:00,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489433519] [2023-12-15 18:12:00,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:12:00,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:12:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:00,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:12:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:12:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:00,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:12:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:00,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:12:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:12:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-12-15 18:12:00,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:12:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489433519] [2023-12-15 18:12:00,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489433519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:12:00,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:12:00,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:12:00,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928108526] [2023-12-15 18:12:00,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:12:00,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:12:00,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:12:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:12:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:12:00,396 INFO L87 Difference]: Start difference. First operand 1340 states and 1781 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:12:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:12:02,207 INFO L93 Difference]: Finished difference Result 2658 states and 3596 transitions. [2023-12-15 18:12:02,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:12:02,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2023-12-15 18:12:02,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:12:02,211 INFO L225 Difference]: With dead ends: 2658 [2023-12-15 18:12:02,211 INFO L226 Difference]: Without dead ends: 1532 [2023-12-15 18:12:02,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:12:02,225 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 63 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:12:02,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 730 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 18:12:02,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2023-12-15 18:12:02,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1372. [2023-12-15 18:12:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1337 states have (on average 1.3036649214659686) internal successors, (1743), 1341 states have internal predecessors, (1743), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:12:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1797 transitions. [2023-12-15 18:12:02,282 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1797 transitions. Word has length 181 [2023-12-15 18:12:02,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:12:02,282 INFO L495 AbstractCegarLoop]: Abstraction has 1372 states and 1797 transitions. [2023-12-15 18:12:02,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:12:02,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1797 transitions. [2023-12-15 18:12:02,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:12:02,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:12:02,284 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:12:02,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 18:12:02,285 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:12:02,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:12:02,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1448962897, now seen corresponding path program 1 times [2023-12-15 18:12:02,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:12:02,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190204738] [2023-12-15 18:12:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:12:02,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:12:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:02,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:12:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:12:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:02,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:12:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:02,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:12:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:12:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:02,520 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-12-15 18:12:02,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:12:02,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190204738] [2023-12-15 18:12:02,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190204738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:12:02,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:12:02,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:12:02,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390567824] [2023-12-15 18:12:02,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:12:02,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:12:02,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:12:02,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:12:02,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:12:02,522 INFO L87 Difference]: Start difference. First operand 1372 states and 1797 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:12:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:12:04,205 INFO L93 Difference]: Finished difference Result 2658 states and 3532 transitions. [2023-12-15 18:12:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:12:04,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2023-12-15 18:12:04,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:12:04,209 INFO L225 Difference]: With dead ends: 2658 [2023-12-15 18:12:04,209 INFO L226 Difference]: Without dead ends: 1500 [2023-12-15 18:12:04,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:12:04,210 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 57 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:12:04,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 709 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 18:12:04,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2023-12-15 18:12:04,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1404. [2023-12-15 18:12:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1369 states have (on average 1.2848794740686633) internal successors, (1759), 1373 states have internal predecessors, (1759), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:12:04,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1813 transitions. [2023-12-15 18:12:04,260 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1813 transitions. Word has length 181 [2023-12-15 18:12:04,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:12:04,260 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 1813 transitions. [2023-12-15 18:12:04,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:12:04,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1813 transitions. [2023-12-15 18:12:04,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:12:04,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:12:04,262 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:12:04,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 18:12:04,263 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:12:04,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:12:04,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1376576339, now seen corresponding path program 1 times [2023-12-15 18:12:04,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:12:04,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187692473] [2023-12-15 18:12:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:12:04,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:12:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:04,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:12:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:12:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:12:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:04,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:12:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:04,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:12:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-15 18:12:04,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:12:04,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187692473] [2023-12-15 18:12:04,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187692473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:12:04,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:12:04,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:12:04,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724027698] [2023-12-15 18:12:04,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:12:04,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:12:04,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:12:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:12:04,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:12:04,454 INFO L87 Difference]: Start difference. First operand 1404 states and 1813 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:12:06,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:12:06,242 INFO L93 Difference]: Finished difference Result 2658 states and 3468 transitions. [2023-12-15 18:12:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:12:06,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 181 [2023-12-15 18:12:06,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:12:06,246 INFO L225 Difference]: With dead ends: 2658 [2023-12-15 18:12:06,246 INFO L226 Difference]: Without dead ends: 1468 [2023-12-15 18:12:06,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:12:06,248 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 49 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:12:06,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 785 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 18:12:06,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2023-12-15 18:12:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1452. [2023-12-15 18:12:06,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1417 states have (on average 1.2526464361326746) internal successors, (1775), 1421 states have internal predecessors, (1775), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 25 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-15 18:12:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1829 transitions. [2023-12-15 18:12:06,270 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1829 transitions. Word has length 181 [2023-12-15 18:12:06,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:12:06,270 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 1829 transitions. [2023-12-15 18:12:06,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 4 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-15 18:12:06,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1829 transitions. [2023-12-15 18:12:06,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-15 18:12:06,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:12:06,273 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:12:06,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 18:12:06,273 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:12:06,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:12:06,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2078176213, now seen corresponding path program 1 times [2023-12-15 18:12:06,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:12:06,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190267012] [2023-12-15 18:12:06,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:12:06,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:12:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:06,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:12:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:06,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-15 18:12:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:06,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-15 18:12:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:06,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:12:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-15 18:12:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-15 18:12:06,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:12:06,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190267012] [2023-12-15 18:12:06,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190267012] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:12:06,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432128901] [2023-12-15 18:12:06,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:12:06,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:12:06,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:12:06,510 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:12:06,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 18:12:07,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:12:07,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 985 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 18:12:07,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:12:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-15 18:12:07,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:12:07,184 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-12-15 18:12:07,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432128901] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:12:07,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:12:07,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2023-12-15 18:12:07,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539301192] [2023-12-15 18:12:07,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:12:07,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 18:12:07,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:12:07,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 18:12:07,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-15 18:12:07,186 INFO L87 Difference]: Start difference. First operand 1452 states and 1829 transitions. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 9 states have internal predecessors, (112), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Received shutdown request... [2023-12-15 18:12:07,695 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:12:07,727 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:12:08,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-15 18:12:08,895 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 18:12:08,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-15 18:12:08,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-12-15 18:12:08,900 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:12:08,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 27 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 18:12:08,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:12:08,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-15 18:12:08,901 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-15 18:12:08,910 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:12:08,911 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:12:08,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:12:08 BoogieIcfgContainer [2023-12-15 18:12:08,925 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:12:08,926 INFO L158 Benchmark]: Toolchain (without parser) took 67782.31ms. Allocated memory was 165.7MB in the beginning and 440.4MB in the end (delta: 274.7MB). Free memory was 120.4MB in the beginning and 206.8MB in the end (delta: -86.4MB). Peak memory consumption was 189.6MB. Max. memory is 8.0GB. [2023-12-15 18:12:08,926 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 165.7MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:12:08,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.88ms. Allocated memory is still 165.7MB. Free memory was 120.1MB in the beginning and 99.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-15 18:12:08,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.75ms. Allocated memory is still 165.7MB. Free memory was 99.1MB in the beginning and 92.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-15 18:12:08,926 INFO L158 Benchmark]: Boogie Preprocessor took 162.72ms. Allocated memory is still 165.7MB. Free memory was 92.8MB in the beginning and 138.1MB in the end (delta: -45.3MB). Peak memory consumption was 16.3MB. Max. memory is 8.0GB. [2023-12-15 18:12:08,926 INFO L158 Benchmark]: RCFGBuilder took 1196.54ms. Allocated memory is still 165.7MB. Free memory was 138.1MB in the beginning and 68.5MB in the end (delta: 69.7MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. [2023-12-15 18:12:08,926 INFO L158 Benchmark]: TraceAbstraction took 65984.70ms. Allocated memory was 165.7MB in the beginning and 440.4MB in the end (delta: 274.7MB). Free memory was 67.9MB in the beginning and 206.8MB in the end (delta: -138.8MB). Peak memory consumption was 135.6MB. Max. memory is 8.0GB. [2023-12-15 18:12:08,927 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 165.7MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 357.88ms. Allocated memory is still 165.7MB. Free memory was 120.1MB in the beginning and 99.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 74.75ms. Allocated memory is still 165.7MB. Free memory was 99.1MB in the beginning and 92.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 162.72ms. Allocated memory is still 165.7MB. Free memory was 92.8MB in the beginning and 138.1MB in the end (delta: -45.3MB). Peak memory consumption was 16.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1196.54ms. Allocated memory is still 165.7MB. Free memory was 138.1MB in the beginning and 68.5MB in the end (delta: 69.7MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. * TraceAbstraction took 65984.70ms. Allocated memory was 165.7MB in the beginning and 440.4MB in the end (delta: 274.7MB). Free memory was 67.9MB in the beginning and 206.8MB in the end (delta: -138.8MB). Peak memory consumption was 135.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 374]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 374). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 155 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.9s, OverallIterations: 29, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 46.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1559 SdHoareTripleChecker+Valid, 45.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1523 mSDsluCounter, 17274 SdHoareTripleChecker+Invalid, 44.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12507 mSDsCounter, 583 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5731 IncrementalHoareTripleChecker+Invalid, 6315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 583 mSolverCounterUnsat, 4767 mSDtfsCounter, 5731 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2728 GetRequests, 2501 SyntacticMatches, 2 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1452occurred in iteration=28, InterpolantAutomatonStates: 203, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 28 MinimizatonAttempts, 2285 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 5270 NumberOfCodeBlocks, 5185 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 5980 ConstructedInterpolants, 0 QuantifiedInterpolants, 8991 SizeOfPredicates, 9 NumberOfNonLiveVariables, 9923 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 51 InterpolantComputations, 24 PerfectInterpolantSequences, 6438/6543 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown