/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_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 17:31:27,479 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 17:31:27,548 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 17:31:27,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 17:31:27,553 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 17:31:27,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 17:31:27,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 17:31:27,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 17:31:27,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 17:31:27,570 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 17:31:27,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 17:31:27,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 17:31:27,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 17:31:27,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 17:31:27,571 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 17:31:27,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 17:31:27,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 17:31:27,572 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 17:31:27,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 17:31:27,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 17:31:27,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 17:31:27,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 17:31:27,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 17:31:27,573 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 17:31:27,573 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 17:31:27,574 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 17:31:27,574 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 17:31:27,574 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 17:31:27,574 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 17:31:27,574 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 17:31:27,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 17:31:27,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 17:31:27,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 17:31:27,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 17:31:27,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:31:27,575 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 17:31:27,575 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 17:31:27,575 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 17:31:27,575 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 17:31:27,576 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 17:31:27,576 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 17:31:27,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 17:31:27,576 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 17:31:27,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 17:31:27,577 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 17:31:27,577 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 17:31:27,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 17:31:27,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 17:31:27,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 17:31:27,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 17:31:27,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 17:31:27,823 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 17:31:27,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product25.cil.c [2023-12-16 17:31:28,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 17:31:29,108 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 17:31:29,108 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product25.cil.c [2023-12-16 17:31:29,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19091a474/33856a6ddf8840c5995b31a8e587753a/FLAG12cecee83 [2023-12-16 17:31:29,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19091a474/33856a6ddf8840c5995b31a8e587753a [2023-12-16 17:31:29,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 17:31:29,141 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 17:31:29,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 17:31:29,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 17:31:29,147 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 17:31:29,148 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:29,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20331ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29, skipping insertion in model container [2023-12-16 17:31:29,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:29,204 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:31:29,629 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product25.cil.c[64426,64439] [2023-12-16 17:31:29,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:31:29,655 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-16 17:31:29,666 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 17:31:29,750 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product25.cil.c[64426,64439] [2023-12-16 17:31:29,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:31:29,756 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 17:31:29,763 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] [2023-12-16 17:31:29,764 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [460] [2023-12-16 17:31:29,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [826] [2023-12-16 17:31:29,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [844] [2023-12-16 17:31:29,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1073] [2023-12-16 17:31:29,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2153] [2023-12-16 17:31:29,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2202] [2023-12-16 17:31:29,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [2548] [2023-12-16 17:31:29,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2607] [2023-12-16 17:31:29,765 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2703] [2023-12-16 17:31:29,766 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2991] [2023-12-16 17:31:29,847 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product25.cil.c[64426,64439] [2023-12-16 17:31:29,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 17:31:29,896 INFO L206 MainTranslator]: Completed translation [2023-12-16 17:31:29,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29 WrapperNode [2023-12-16 17:31:29,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 17:31:29,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 17:31:29,897 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 17:31:29,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 17:31:29,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:29,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:29,987 INFO L138 Inliner]: procedures = 133, calls = 207, calls flagged for inlining = 59, calls inlined = 56, statements flattened = 982 [2023-12-16 17:31:29,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 17:31:29,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 17:31:29,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 17:31:29,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 17:31:29,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:29,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:30,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:30,024 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-12-16 17:31:30,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:30,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:30,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:30,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:30,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:30,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:30,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 17:31:30,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 17:31:30,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 17:31:30,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 17:31:30,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (1/1) ... [2023-12-16 17:31:30,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 17:31:30,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 17:31:30,141 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) [2023-12-16 17:31:30,163 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 [2023-12-16 17:31:30,171 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2023-12-16 17:31:30,171 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2023-12-16 17:31:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2023-12-16 17:31:30,172 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2023-12-16 17:31:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2023-12-16 17:31:30,172 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2023-12-16 17:31:30,172 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-12-16 17:31:30,173 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-12-16 17:31:30,173 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-12-16 17:31:30,173 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-12-16 17:31:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-12-16 17:31:30,175 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-12-16 17:31:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-12-16 17:31:30,175 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-12-16 17:31:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-12-16 17:31:30,175 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-12-16 17:31:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-12-16 17:31:30,175 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-12-16 17:31:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-12-16 17:31:30,175 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-12-16 17:31:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-12-16 17:31:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-12-16 17:31:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 17:31:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-12-16 17:31:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-12-16 17:31:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-12-16 17:31:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-12-16 17:31:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2023-12-16 17:31:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2023-12-16 17:31:30,176 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-12-16 17:31:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-12-16 17:31:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-12-16 17:31:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-12-16 17:31:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-12-16 17:31:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-12-16 17:31:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-12-16 17:31:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-12-16 17:31:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 17:31:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 17:31:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-16 17:31:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-16 17:31:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-12-16 17:31:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-12-16 17:31:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-12-16 17:31:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-12-16 17:31:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-12-16 17:31:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-12-16 17:31:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-12-16 17:31:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-12-16 17:31:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-12-16 17:31:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-12-16 17:31:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2023-12-16 17:31:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2023-12-16 17:31:30,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 17:31:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 17:31:30,373 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 17:31:30,375 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 17:31:31,145 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 17:31:31,252 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 17:31:31,252 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 17:31:31,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:31:31 BoogieIcfgContainer [2023-12-16 17:31:31,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 17:31:31,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 17:31:31,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 17:31:31,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 17:31:31,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:31:29" (1/3) ... [2023-12-16 17:31:31,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@def9517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:31:31, skipping insertion in model container [2023-12-16 17:31:31,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:31:29" (2/3) ... [2023-12-16 17:31:31,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@def9517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:31:31, skipping insertion in model container [2023-12-16 17:31:31,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:31:31" (3/3) ... [2023-12-16 17:31:31,258 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product25.cil.c [2023-12-16 17:31:31,270 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 17:31:31,270 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 17:31:31,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 17:31:31,327 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;@598f8f23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 17:31:31,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 17:31:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 371 states, 283 states have (on average 1.6148409893992932) internal successors, (457), 288 states have internal predecessors, (457), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-16 17:31:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-16 17:31:31,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:31,353 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:31,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:31,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:31,357 INFO L85 PathProgramCache]: Analyzing trace with hash 254995704, now seen corresponding path program 1 times [2023-12-16 17:31:31,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:31,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854849681] [2023-12-16 17:31:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:31,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:31,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:31,373 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:31,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 17:31:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:31,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 17:31:31,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 17:31:31,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:31,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:31,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854849681] [2023-12-16 17:31:31,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854849681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:31,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:31,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 17:31:31,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049597377] [2023-12-16 17:31:31,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:31,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 17:31:31,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:31,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 17:31:31,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 17:31:31,751 INFO L87 Difference]: Start difference. First operand has 371 states, 283 states have (on average 1.6148409893992932) internal successors, (457), 288 states have internal predecessors, (457), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:31,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:31,853 INFO L93 Difference]: Finished difference Result 557 states and 861 transitions. [2023-12-16 17:31:31,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 17:31:31,860 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 123 [2023-12-16 17:31:31,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:31,869 INFO L225 Difference]: With dead ends: 557 [2023-12-16 17:31:31,869 INFO L226 Difference]: Without dead ends: 367 [2023-12-16 17:31:31,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 17:31:31,881 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:31,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 557 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:31:31,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-12-16 17:31:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2023-12-16 17:31:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 281 states have (on average 1.601423487544484) internal successors, (450), 284 states have internal predecessors, (450), 62 states have call successors, (62), 24 states have call predecessors, (62), 23 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-12-16 17:31:31,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 571 transitions. [2023-12-16 17:31:31,941 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 571 transitions. Word has length 123 [2023-12-16 17:31:31,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:31,943 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 571 transitions. [2023-12-16 17:31:31,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:31,943 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 571 transitions. [2023-12-16 17:31:31,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-16 17:31:31,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:31,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:31,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:32,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:32,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:32,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:32,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2120883837, now seen corresponding path program 1 times [2023-12-16 17:31:32,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:32,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049938961] [2023-12-16 17:31:32,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:32,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:32,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:32,163 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:32,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 17:31:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:32,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:31:32,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:32,453 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 17:31:32,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:32,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:32,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049938961] [2023-12-16 17:31:32,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049938961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:32,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:32,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:31:32,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56936617] [2023-12-16 17:31:32,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:32,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:31:32,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:32,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:31:32,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:31:32,458 INFO L87 Difference]: Start difference. First operand 367 states and 571 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 17:31:32,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:32,595 INFO L93 Difference]: Finished difference Result 729 states and 1136 transitions. [2023-12-16 17:31:32,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:31:32,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 106 [2023-12-16 17:31:32,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:32,602 INFO L225 Difference]: With dead ends: 729 [2023-12-16 17:31:32,602 INFO L226 Difference]: Without dead ends: 369 [2023-12-16 17:31:32,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:31:32,605 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 8 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:32,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2169 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:31:32,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-12-16 17:31:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2023-12-16 17:31:32,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 282 states have (on average 1.599290780141844) internal successors, (451), 286 states have internal predecessors, (451), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 58 states have call predecessors, (61), 59 states have call successors, (61) [2023-12-16 17:31:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 574 transitions. [2023-12-16 17:31:32,641 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 574 transitions. Word has length 106 [2023-12-16 17:31:32,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:32,642 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 574 transitions. [2023-12-16 17:31:32,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 17:31:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 574 transitions. [2023-12-16 17:31:32,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 17:31:32,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:32,645 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:32,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:32,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:32,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:32,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash 398285405, now seen corresponding path program 1 times [2023-12-16 17:31:32,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:32,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948985867] [2023-12-16 17:31:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:32,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:32,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:32,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:32,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 17:31:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:33,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:31:33,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 17:31:33,188 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:33,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:33,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948985867] [2023-12-16 17:31:33,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948985867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:33,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:33,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:31:33,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328269168] [2023-12-16 17:31:33,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:33,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:31:33,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:33,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:31:33,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:31:33,190 INFO L87 Difference]: Start difference. First operand 369 states and 574 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 17:31:33,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:33,315 INFO L93 Difference]: Finished difference Result 731 states and 1140 transitions. [2023-12-16 17:31:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:31:33,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 107 [2023-12-16 17:31:33,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:33,318 INFO L225 Difference]: With dead ends: 731 [2023-12-16 17:31:33,318 INFO L226 Difference]: Without dead ends: 371 [2023-12-16 17:31:33,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:31:33,321 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 8 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:33,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:31:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-12-16 17:31:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2023-12-16 17:31:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 283 states have (on average 1.5971731448763251) internal successors, (452), 288 states have internal predecessors, (452), 62 states have call successors, (62), 24 states have call predecessors, (62), 25 states have return successors, (65), 58 states have call predecessors, (65), 59 states have call successors, (65) [2023-12-16 17:31:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 579 transitions. [2023-12-16 17:31:33,334 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 579 transitions. Word has length 107 [2023-12-16 17:31:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:33,335 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 579 transitions. [2023-12-16 17:31:33,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 17:31:33,335 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 579 transitions. [2023-12-16 17:31:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-16 17:31:33,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:33,337 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:33,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:33,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:33,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:33,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1767804677, now seen corresponding path program 1 times [2023-12-16 17:31:33,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:33,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142633833] [2023-12-16 17:31:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:33,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:33,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:33,549 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:33,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 17:31:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:33,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:31:33,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 17:31:33,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:33,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:33,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142633833] [2023-12-16 17:31:33,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142633833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:33,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:33,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:31:33,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040415448] [2023-12-16 17:31:33,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:33,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:31:33,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:33,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:31:33,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:31:33,811 INFO L87 Difference]: Start difference. First operand 371 states and 579 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-16 17:31:33,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:33,916 INFO L93 Difference]: Finished difference Result 723 states and 1130 transitions. [2023-12-16 17:31:33,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:31:33,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 126 [2023-12-16 17:31:33,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:33,918 INFO L225 Difference]: With dead ends: 723 [2023-12-16 17:31:33,918 INFO L226 Difference]: Without dead ends: 371 [2023-12-16 17:31:33,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:31:33,920 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 8 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:33,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2169 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:31:33,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-12-16 17:31:33,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2023-12-16 17:31:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 283 states have (on average 1.5971731448763251) internal successors, (452), 288 states have internal predecessors, (452), 62 states have call successors, (62), 24 states have call predecessors, (62), 25 states have return successors, (64), 58 states have call predecessors, (64), 59 states have call successors, (64) [2023-12-16 17:31:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 578 transitions. [2023-12-16 17:31:33,930 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 578 transitions. Word has length 126 [2023-12-16 17:31:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:33,930 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 578 transitions. [2023-12-16 17:31:33,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-16 17:31:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 578 transitions. [2023-12-16 17:31:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-16 17:31:33,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:33,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:33,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:34,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:34,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:34,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:34,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1433814723, now seen corresponding path program 1 times [2023-12-16 17:31:34,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:34,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732575566] [2023-12-16 17:31:34,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:34,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:34,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:34,148 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:34,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 17:31:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:34,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 17:31:34,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 17:31:34,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:34,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:34,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732575566] [2023-12-16 17:31:34,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732575566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:34,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:34,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:31:34,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401595146] [2023-12-16 17:31:34,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:34,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:31:34,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:34,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:31:34,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:31:34,427 INFO L87 Difference]: Start difference. First operand 371 states and 578 transitions. Second operand has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 17:31:34,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:34,534 INFO L93 Difference]: Finished difference Result 725 states and 1133 transitions. [2023-12-16 17:31:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:31:34,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 109 [2023-12-16 17:31:34,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:34,536 INFO L225 Difference]: With dead ends: 725 [2023-12-16 17:31:34,537 INFO L226 Difference]: Without dead ends: 373 [2023-12-16 17:31:34,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:31:34,538 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 6 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:34,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2171 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:31:34,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-12-16 17:31:34,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2023-12-16 17:31:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 284 states have (on average 1.5950704225352113) internal successors, (453), 290 states have internal predecessors, (453), 62 states have call successors, (62), 24 states have call predecessors, (62), 26 states have return successors, (66), 58 states have call predecessors, (66), 59 states have call successors, (66) [2023-12-16 17:31:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 581 transitions. [2023-12-16 17:31:34,548 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 581 transitions. Word has length 109 [2023-12-16 17:31:34,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:34,548 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 581 transitions. [2023-12-16 17:31:34,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 17:31:34,548 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 581 transitions. [2023-12-16 17:31:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-16 17:31:34,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:34,550 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:34,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:34,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:34,757 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:34,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:34,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1274733088, now seen corresponding path program 1 times [2023-12-16 17:31:34,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:34,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354550887] [2023-12-16 17:31:34,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:34,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:34,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:34,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:34,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 17:31:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:35,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:31:35,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 17:31:35,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:35,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:35,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354550887] [2023-12-16 17:31:35,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354550887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:35,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:35,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:31:35,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764883225] [2023-12-16 17:31:35,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:35,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:31:35,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:35,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:31:35,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:31:35,033 INFO L87 Difference]: Start difference. First operand 373 states and 581 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-16 17:31:35,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:35,130 INFO L93 Difference]: Finished difference Result 723 states and 1128 transitions. [2023-12-16 17:31:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:31:35,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 128 [2023-12-16 17:31:35,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:35,133 INFO L225 Difference]: With dead ends: 723 [2023-12-16 17:31:35,133 INFO L226 Difference]: Without dead ends: 373 [2023-12-16 17:31:35,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:31:35,134 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 8 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:35,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2156 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:31:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-12-16 17:31:35,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2023-12-16 17:31:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 284 states have (on average 1.5950704225352113) internal successors, (453), 290 states have internal predecessors, (453), 62 states have call successors, (62), 24 states have call predecessors, (62), 26 states have return successors, (65), 58 states have call predecessors, (65), 59 states have call successors, (65) [2023-12-16 17:31:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 580 transitions. [2023-12-16 17:31:35,145 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 580 transitions. Word has length 128 [2023-12-16 17:31:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:35,145 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 580 transitions. [2023-12-16 17:31:35,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-12-16 17:31:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 580 transitions. [2023-12-16 17:31:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-16 17:31:35,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:35,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:35,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:35,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:35,357 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:35,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:35,357 INFO L85 PathProgramCache]: Analyzing trace with hash 464060688, now seen corresponding path program 1 times [2023-12-16 17:31:35,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:35,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254609400] [2023-12-16 17:31:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:35,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:35,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:35,361 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:35,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 17:31:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:35,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 17:31:35,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-16 17:31:35,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:35,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:35,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254609400] [2023-12-16 17:31:35,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254609400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:35,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:35,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 17:31:35,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146723122] [2023-12-16 17:31:35,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:35,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 17:31:35,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 17:31:35,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 17:31:35,615 INFO L87 Difference]: Start difference. First operand 373 states and 580 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 17:31:35,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:35,745 INFO L93 Difference]: Finished difference Result 725 states and 1133 transitions. [2023-12-16 17:31:35,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 17:31:35,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 111 [2023-12-16 17:31:35,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:35,748 INFO L225 Difference]: With dead ends: 725 [2023-12-16 17:31:35,748 INFO L226 Difference]: Without dead ends: 375 [2023-12-16 17:31:35,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:31:35,750 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 6 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:35,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2158 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 17:31:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2023-12-16 17:31:35,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2023-12-16 17:31:35,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 285 states have (on average 1.592982456140351) internal successors, (454), 292 states have internal predecessors, (454), 62 states have call successors, (62), 24 states have call predecessors, (62), 27 states have return successors, (69), 58 states have call predecessors, (69), 59 states have call successors, (69) [2023-12-16 17:31:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 585 transitions. [2023-12-16 17:31:35,763 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 585 transitions. Word has length 111 [2023-12-16 17:31:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:35,763 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 585 transitions. [2023-12-16 17:31:35,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-16 17:31:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 585 transitions. [2023-12-16 17:31:35,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 17:31:35,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:35,766 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:35,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-16 17:31:35,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:35,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:35,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:35,973 INFO L85 PathProgramCache]: Analyzing trace with hash -33991877, now seen corresponding path program 1 times [2023-12-16 17:31:35,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:35,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546623166] [2023-12-16 17:31:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:35,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:35,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:35,974 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:35,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 17:31:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:36,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:31:36,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:36,211 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-16 17:31:36,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:36,211 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:36,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546623166] [2023-12-16 17:31:36,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546623166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:36,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:36,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:31:36,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011325088] [2023-12-16 17:31:36,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:36,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:31:36,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:36,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:31:36,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:36,213 INFO L87 Difference]: Start difference. First operand 375 states and 585 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:36,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:36,255 INFO L93 Difference]: Finished difference Result 560 states and 855 transitions. [2023-12-16 17:31:36,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:31:36,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2023-12-16 17:31:36,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:36,258 INFO L225 Difference]: With dead ends: 560 [2023-12-16 17:31:36,258 INFO L226 Difference]: Without dead ends: 377 [2023-12-16 17:31:36,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:36,260 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 0 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:36,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1107 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:31:36,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-16 17:31:36,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-12-16 17:31:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 287 states have (on average 1.588850174216028) internal successors, (456), 294 states have internal predecessors, (456), 62 states have call successors, (62), 24 states have call predecessors, (62), 27 states have return successors, (69), 58 states have call predecessors, (69), 59 states have call successors, (69) [2023-12-16 17:31:36,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 587 transitions. [2023-12-16 17:31:36,271 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 587 transitions. Word has length 130 [2023-12-16 17:31:36,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:36,271 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 587 transitions. [2023-12-16 17:31:36,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:36,272 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 587 transitions. [2023-12-16 17:31:36,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 17:31:36,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:36,273 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:36,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:36,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:36,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:36,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:36,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1817714718, now seen corresponding path program 1 times [2023-12-16 17:31:36,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:36,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711745636] [2023-12-16 17:31:36,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:36,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:36,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:36,493 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:36,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 17:31:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:36,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:31:36,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-16 17:31:36,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:36,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:36,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711745636] [2023-12-16 17:31:36,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711745636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:36,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:36,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:31:36,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629291108] [2023-12-16 17:31:36,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:36,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:31:36,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:36,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:31:36,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:36,725 INFO L87 Difference]: Start difference. First operand 377 states and 587 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:36,769 INFO L93 Difference]: Finished difference Result 798 states and 1260 transitions. [2023-12-16 17:31:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:31:36,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 135 [2023-12-16 17:31:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:36,771 INFO L225 Difference]: With dead ends: 798 [2023-12-16 17:31:36,771 INFO L226 Difference]: Without dead ends: 447 [2023-12-16 17:31:36,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:36,773 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 129 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:36,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1079 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:31:36,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-12-16 17:31:36,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 442. [2023-12-16 17:31:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 338 states have (on average 1.606508875739645) internal successors, (543), 345 states have internal predecessors, (543), 76 states have call successors, (76), 24 states have call predecessors, (76), 27 states have return successors, (85), 72 states have call predecessors, (85), 73 states have call successors, (85) [2023-12-16 17:31:36,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 704 transitions. [2023-12-16 17:31:36,811 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 704 transitions. Word has length 135 [2023-12-16 17:31:36,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:36,811 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 704 transitions. [2023-12-16 17:31:36,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:36,812 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 704 transitions. [2023-12-16 17:31:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-16 17:31:36,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:36,814 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:36,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:37,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:37,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:37,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:37,017 INFO L85 PathProgramCache]: Analyzing trace with hash -382099701, now seen corresponding path program 1 times [2023-12-16 17:31:37,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:37,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580581714] [2023-12-16 17:31:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:37,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:37,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:37,018 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:37,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 17:31:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:37,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 17:31:37,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-16 17:31:37,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:31:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-16 17:31:37,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:37,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580581714] [2023-12-16 17:31:37,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580581714] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:31:37,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:31:37,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 17:31:37,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296650895] [2023-12-16 17:31:37,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:31:37,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 17:31:37,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:37,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 17:31:37,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 17:31:37,351 INFO L87 Difference]: Start difference. First operand 442 states and 704 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-16 17:31:37,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:37,599 INFO L93 Difference]: Finished difference Result 1045 states and 1723 transitions. [2023-12-16 17:31:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 17:31:37,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 136 [2023-12-16 17:31:37,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:37,604 INFO L225 Difference]: With dead ends: 1045 [2023-12-16 17:31:37,604 INFO L226 Difference]: Without dead ends: 862 [2023-12-16 17:31:37,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:31:37,606 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 586 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:37,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1991 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:31:37,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-12-16 17:31:37,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 847. [2023-12-16 17:31:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 664 states have (on average 1.661144578313253) internal successors, (1103), 671 states have internal predecessors, (1103), 155 states have call successors, (155), 24 states have call predecessors, (155), 27 states have return successors, (174), 151 states have call predecessors, (174), 152 states have call successors, (174) [2023-12-16 17:31:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1432 transitions. [2023-12-16 17:31:37,633 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1432 transitions. Word has length 136 [2023-12-16 17:31:37,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:37,633 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1432 transitions. [2023-12-16 17:31:37,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-16 17:31:37,633 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1432 transitions. [2023-12-16 17:31:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-16 17:31:37,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:37,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:37,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:37,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:37,846 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:37,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash 390523406, now seen corresponding path program 1 times [2023-12-16 17:31:37,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:37,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831288421] [2023-12-16 17:31:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:37,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:37,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:37,849 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:37,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 17:31:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:38,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:31:38,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-16 17:31:38,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:38,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:38,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831288421] [2023-12-16 17:31:38,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831288421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:38,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:38,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:31:38,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638120074] [2023-12-16 17:31:38,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:38,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:31:38,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:38,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:31:38,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:38,095 INFO L87 Difference]: Start difference. First operand 847 states and 1432 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:38,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:38,157 INFO L93 Difference]: Finished difference Result 2041 states and 3493 transitions. [2023-12-16 17:31:38,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:31:38,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 142 [2023-12-16 17:31:38,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:38,163 INFO L225 Difference]: With dead ends: 2041 [2023-12-16 17:31:38,163 INFO L226 Difference]: Without dead ends: 1254 [2023-12-16 17:31:38,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:38,166 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 127 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:38,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1108 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:31:38,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2023-12-16 17:31:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1249. [2023-12-16 17:31:38,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 987 states have (on average 1.6717325227963526) internal successors, (1650), 994 states have internal predecessors, (1650), 234 states have call successors, (234), 24 states have call predecessors, (234), 27 states have return successors, (263), 230 states have call predecessors, (263), 231 states have call successors, (263) [2023-12-16 17:31:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2147 transitions. [2023-12-16 17:31:38,203 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2147 transitions. Word has length 142 [2023-12-16 17:31:38,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:38,204 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 2147 transitions. [2023-12-16 17:31:38,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:38,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2147 transitions. [2023-12-16 17:31:38,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-16 17:31:38,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:38,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:38,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:38,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:38,415 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:38,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:38,416 INFO L85 PathProgramCache]: Analyzing trace with hash -859867298, now seen corresponding path program 1 times [2023-12-16 17:31:38,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:38,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787213139] [2023-12-16 17:31:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:38,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:38,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:38,418 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:38,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 17:31:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:38,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:31:38,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-16 17:31:38,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:38,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787213139] [2023-12-16 17:31:38,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787213139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:38,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:38,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:31:38,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414684969] [2023-12-16 17:31:38,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:38,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:31:38,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:38,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:31:38,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:38,652 INFO L87 Difference]: Start difference. First operand 1249 states and 2147 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:38,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:38,727 INFO L93 Difference]: Finished difference Result 3024 states and 5224 transitions. [2023-12-16 17:31:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:31:38,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2023-12-16 17:31:38,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:38,736 INFO L225 Difference]: With dead ends: 3024 [2023-12-16 17:31:38,736 INFO L226 Difference]: Without dead ends: 1885 [2023-12-16 17:31:38,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:38,740 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 125 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:38,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1103 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:31:38,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2023-12-16 17:31:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1880. [2023-12-16 17:31:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1499 states have (on average 1.6784523015343562) internal successors, (2516), 1506 states have internal predecessors, (2516), 353 states have call successors, (353), 24 states have call predecessors, (353), 27 states have return successors, (382), 349 states have call predecessors, (382), 350 states have call successors, (382) [2023-12-16 17:31:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 3251 transitions. [2023-12-16 17:31:38,837 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 3251 transitions. Word has length 143 [2023-12-16 17:31:38,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:38,837 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 3251 transitions. [2023-12-16 17:31:38,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:38,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 3251 transitions. [2023-12-16 17:31:38,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-16 17:31:38,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:38,846 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:38,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:39,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:39,053 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:39,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:39,054 INFO L85 PathProgramCache]: Analyzing trace with hash 97118700, now seen corresponding path program 1 times [2023-12-16 17:31:39,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:39,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817554921] [2023-12-16 17:31:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:39,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:39,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:39,055 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:39,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-16 17:31:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:39,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:31:39,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:39,297 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-16 17:31:39,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:39,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:39,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817554921] [2023-12-16 17:31:39,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817554921] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:39,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:39,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:31:39,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558592525] [2023-12-16 17:31:39,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:39,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:31:39,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:39,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:31:39,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:39,299 INFO L87 Difference]: Start difference. First operand 1880 states and 3251 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:39,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:39,398 INFO L93 Difference]: Finished difference Result 4504 states and 7842 transitions. [2023-12-16 17:31:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:31:39,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2023-12-16 17:31:39,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:39,411 INFO L225 Difference]: With dead ends: 4504 [2023-12-16 17:31:39,411 INFO L226 Difference]: Without dead ends: 2854 [2023-12-16 17:31:39,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:39,418 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 123 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:39,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1098 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:31:39,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2023-12-16 17:31:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2849. [2023-12-16 17:31:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2849 states, 2306 states have (on average 1.6843018213356462) internal successors, (3884), 2313 states have internal predecessors, (3884), 515 states have call successors, (515), 24 states have call predecessors, (515), 27 states have return successors, (560), 511 states have call predecessors, (560), 512 states have call successors, (560) [2023-12-16 17:31:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 4959 transitions. [2023-12-16 17:31:39,513 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 4959 transitions. Word has length 144 [2023-12-16 17:31:39,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:39,513 INFO L495 AbstractCegarLoop]: Abstraction has 2849 states and 4959 transitions. [2023-12-16 17:31:39,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:39,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 4959 transitions. [2023-12-16 17:31:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 17:31:39,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:39,525 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:39,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:39,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:39,733 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:39,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:39,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1841378271, now seen corresponding path program 1 times [2023-12-16 17:31:39,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:39,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661776612] [2023-12-16 17:31:39,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:39,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:39,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:39,735 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:39,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-16 17:31:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:39,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:31:39,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 17:31:39,992 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:39,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:39,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661776612] [2023-12-16 17:31:39,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661776612] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:39,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:39,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:31:39,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145360792] [2023-12-16 17:31:39,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:39,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:31:39,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:39,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:31:39,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:39,994 INFO L87 Difference]: Start difference. First operand 2849 states and 4959 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 17:31:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:40,115 INFO L93 Difference]: Finished difference Result 6844 states and 11990 transitions. [2023-12-16 17:31:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:31:40,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 127 [2023-12-16 17:31:40,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:40,134 INFO L225 Difference]: With dead ends: 6844 [2023-12-16 17:31:40,134 INFO L226 Difference]: Without dead ends: 4422 [2023-12-16 17:31:40,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:40,143 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 121 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:40,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1098 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:31:40,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2023-12-16 17:31:40,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4417. [2023-12-16 17:31:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4417 states, 3629 states have (on average 1.6886194543951503) internal successors, (6128), 3636 states have internal predecessors, (6128), 760 states have call successors, (760), 24 states have call predecessors, (760), 27 states have return successors, (831), 756 states have call predecessors, (831), 757 states have call successors, (831) [2023-12-16 17:31:40,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4417 states to 4417 states and 7719 transitions. [2023-12-16 17:31:40,297 INFO L78 Accepts]: Start accepts. Automaton has 4417 states and 7719 transitions. Word has length 127 [2023-12-16 17:31:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:40,297 INFO L495 AbstractCegarLoop]: Abstraction has 4417 states and 7719 transitions. [2023-12-16 17:31:40,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 17:31:40,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4417 states and 7719 transitions. [2023-12-16 17:31:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-16 17:31:40,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:40,312 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:40,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:40,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:40,518 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:40,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:40,519 INFO L85 PathProgramCache]: Analyzing trace with hash 888494192, now seen corresponding path program 1 times [2023-12-16 17:31:40,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:40,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375435787] [2023-12-16 17:31:40,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:40,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:40,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:40,521 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:40,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-16 17:31:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:40,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:31:40,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-16 17:31:40,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:40,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:40,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375435787] [2023-12-16 17:31:40,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375435787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:40,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:40,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:31:40,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875799621] [2023-12-16 17:31:40,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:40,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:31:40,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:31:40,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:40,773 INFO L87 Difference]: Start difference. First operand 4417 states and 7719 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:40,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:40,954 INFO L93 Difference]: Finished difference Result 10797 states and 18957 transitions. [2023-12-16 17:31:40,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:31:40,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2023-12-16 17:31:40,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:40,996 INFO L225 Difference]: With dead ends: 10797 [2023-12-16 17:31:40,996 INFO L226 Difference]: Without dead ends: 7094 [2023-12-16 17:31:41,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:41,014 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 119 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:41,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1117 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:31:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7094 states. [2023-12-16 17:31:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7094 to 7089. [2023-12-16 17:31:41,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7089 states, 5808 states have (on average 1.6825068870523416) internal successors, (9772), 5815 states have internal predecessors, (9772), 1253 states have call successors, (1253), 24 states have call predecessors, (1253), 27 states have return successors, (1368), 1249 states have call predecessors, (1368), 1250 states have call successors, (1368) [2023-12-16 17:31:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 12393 transitions. [2023-12-16 17:31:41,354 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 12393 transitions. Word has length 146 [2023-12-16 17:31:41,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:41,355 INFO L495 AbstractCegarLoop]: Abstraction has 7089 states and 12393 transitions. [2023-12-16 17:31:41,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:41,356 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 12393 transitions. [2023-12-16 17:31:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-16 17:31:41,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:41,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:41,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:41,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:41,583 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:41,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:41,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1373659045, now seen corresponding path program 1 times [2023-12-16 17:31:41,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:41,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902003545] [2023-12-16 17:31:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:41,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:41,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:41,585 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:41,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-16 17:31:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:41,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:31:41,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 17:31:41,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:41,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:41,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902003545] [2023-12-16 17:31:41,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902003545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:41,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:41,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:31:41,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734861134] [2023-12-16 17:31:41,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:41,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:31:41,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:41,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:31:41,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:41,818 INFO L87 Difference]: Start difference. First operand 7089 states and 12393 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 17:31:42,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:42,156 INFO L93 Difference]: Finished difference Result 17932 states and 31530 transitions. [2023-12-16 17:31:42,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:31:42,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2023-12-16 17:31:42,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:42,201 INFO L225 Difference]: With dead ends: 17932 [2023-12-16 17:31:42,201 INFO L226 Difference]: Without dead ends: 11923 [2023-12-16 17:31:42,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:42,227 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 117 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:42,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1108 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:31:42,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11923 states. [2023-12-16 17:31:42,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11923 to 11918. [2023-12-16 17:31:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11918 states, 9815 states have (on average 1.682322975038207) internal successors, (16512), 9822 states have internal predecessors, (16512), 2075 states have call successors, (2075), 24 states have call predecessors, (2075), 27 states have return successors, (2268), 2071 states have call predecessors, (2268), 2072 states have call successors, (2268) [2023-12-16 17:31:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11918 states to 11918 states and 20855 transitions. [2023-12-16 17:31:42,710 INFO L78 Accepts]: Start accepts. Automaton has 11918 states and 20855 transitions. Word has length 129 [2023-12-16 17:31:42,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:42,710 INFO L495 AbstractCegarLoop]: Abstraction has 11918 states and 20855 transitions. [2023-12-16 17:31:42,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 17:31:42,710 INFO L276 IsEmpty]: Start isEmpty. Operand 11918 states and 20855 transitions. [2023-12-16 17:31:42,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-16 17:31:42,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:42,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:42,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:42,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:42,951 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:42,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:42,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1430514050, now seen corresponding path program 1 times [2023-12-16 17:31:42,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:42,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888518297] [2023-12-16 17:31:42,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:42,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:42,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:42,953 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:42,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-16 17:31:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:43,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:31:43,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-16 17:31:43,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:43,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:43,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888518297] [2023-12-16 17:31:43,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888518297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:43,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:43,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:31:43,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320741270] [2023-12-16 17:31:43,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:43,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:31:43,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:43,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:31:43,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:43,201 INFO L87 Difference]: Start difference. First operand 11918 states and 20855 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:43,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:43,801 INFO L93 Difference]: Finished difference Result 28478 states and 49802 transitions. [2023-12-16 17:31:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:31:43,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2023-12-16 17:31:43,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:43,864 INFO L225 Difference]: With dead ends: 28478 [2023-12-16 17:31:43,864 INFO L226 Difference]: Without dead ends: 18595 [2023-12-16 17:31:43,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:43,893 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 115 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:43,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1073 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:31:43,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18595 states. [2023-12-16 17:31:44,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18595 to 18590. [2023-12-16 17:31:44,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18590 states, 15284 states have (on average 1.6601020675215912) internal successors, (25373), 15291 states have internal predecessors, (25373), 3278 states have call successors, (3278), 24 states have call predecessors, (3278), 27 states have return successors, (3615), 3274 states have call predecessors, (3615), 3275 states have call successors, (3615) [2023-12-16 17:31:44,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18590 states to 18590 states and 32266 transitions. [2023-12-16 17:31:44,583 INFO L78 Accepts]: Start accepts. Automaton has 18590 states and 32266 transitions. Word has length 148 [2023-12-16 17:31:44,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:44,584 INFO L495 AbstractCegarLoop]: Abstraction has 18590 states and 32266 transitions. [2023-12-16 17:31:44,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:44,584 INFO L276 IsEmpty]: Start isEmpty. Operand 18590 states and 32266 transitions. [2023-12-16 17:31:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-16 17:31:44,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:44,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:44,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:44,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:44,817 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:44,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:44,818 INFO L85 PathProgramCache]: Analyzing trace with hash -866755144, now seen corresponding path program 1 times [2023-12-16 17:31:44,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:44,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918077249] [2023-12-16 17:31:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:44,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:44,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:44,819 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:44,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-16 17:31:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:45,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:31:45,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-16 17:31:45,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:45,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918077249] [2023-12-16 17:31:45,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918077249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:45,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:45,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:31:45,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150904910] [2023-12-16 17:31:45,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:45,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:31:45,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:45,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:31:45,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:45,060 INFO L87 Difference]: Start difference. First operand 18590 states and 32266 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:46,016 INFO L93 Difference]: Finished difference Result 49111 states and 85583 transitions. [2023-12-16 17:31:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:31:46,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2023-12-16 17:31:46,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:46,136 INFO L225 Difference]: With dead ends: 49111 [2023-12-16 17:31:46,137 INFO L226 Difference]: Without dead ends: 33176 [2023-12-16 17:31:46,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:46,179 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 113 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:46,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1101 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:31:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33176 states. [2023-12-16 17:31:47,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33176 to 33171. [2023-12-16 17:31:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33171 states, 27415 states have (on average 1.657340871785519) internal successors, (45436), 27422 states have internal predecessors, (45436), 5728 states have call successors, (5728), 24 states have call predecessors, (5728), 27 states have return successors, (6339), 5724 states have call predecessors, (6339), 5725 states have call successors, (6339) [2023-12-16 17:31:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33171 states to 33171 states and 57503 transitions. [2023-12-16 17:31:47,494 INFO L78 Accepts]: Start accepts. Automaton has 33171 states and 57503 transitions. Word has length 149 [2023-12-16 17:31:47,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:47,495 INFO L495 AbstractCegarLoop]: Abstraction has 33171 states and 57503 transitions. [2023-12-16 17:31:47,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 33171 states and 57503 transitions. [2023-12-16 17:31:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-16 17:31:47,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:47,527 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:47,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:47,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:47,734 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:47,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:47,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1860725992, now seen corresponding path program 1 times [2023-12-16 17:31:47,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:47,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414664329] [2023-12-16 17:31:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:47,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:47,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:47,736 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:47,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-16 17:31:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:47,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:31:47,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-16 17:31:48,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:48,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:48,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414664329] [2023-12-16 17:31:48,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414664329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:48,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:48,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:31:48,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574899102] [2023-12-16 17:31:48,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:48,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:31:48,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:48,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:31:48,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:48,174 INFO L87 Difference]: Start difference. First operand 33171 states and 57503 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:49,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:49,871 INFO L93 Difference]: Finished difference Result 90413 states and 157275 transitions. [2023-12-16 17:31:49,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:31:49,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2023-12-16 17:31:49,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:50,187 INFO L225 Difference]: With dead ends: 90413 [2023-12-16 17:31:50,187 INFO L226 Difference]: Without dead ends: 60788 [2023-12-16 17:31:50,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:50,243 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 111 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:50,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1103 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:31:50,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60788 states. [2023-12-16 17:31:52,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60788 to 60783. [2023-12-16 17:31:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60783 states, 50514 states have (on average 1.6536405748901295) internal successors, (83532), 50521 states have internal predecessors, (83532), 10241 states have call successors, (10241), 24 states have call predecessors, (10241), 27 states have return successors, (11384), 10237 states have call predecessors, (11384), 10238 states have call successors, (11384) [2023-12-16 17:31:53,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60783 states to 60783 states and 105157 transitions. [2023-12-16 17:31:53,064 INFO L78 Accepts]: Start accepts. Automaton has 60783 states and 105157 transitions. Word has length 150 [2023-12-16 17:31:53,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:31:53,064 INFO L495 AbstractCegarLoop]: Abstraction has 60783 states and 105157 transitions. [2023-12-16 17:31:53,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-16 17:31:53,065 INFO L276 IsEmpty]: Start isEmpty. Operand 60783 states and 105157 transitions. [2023-12-16 17:31:53,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-16 17:31:53,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:31:53,107 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:31:53,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-16 17:31:53,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:53,312 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:31:53,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:31:53,313 INFO L85 PathProgramCache]: Analyzing trace with hash 423398298, now seen corresponding path program 1 times [2023-12-16 17:31:53,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:31:53,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577906085] [2023-12-16 17:31:53,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:31:53,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:31:53,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:31:53,315 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:31:53,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-16 17:31:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:31:53,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 17:31:53,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:31:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 17:31:53,561 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:31:53,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:31:53,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577906085] [2023-12-16 17:31:53,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577906085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:31:53,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:31:53,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 17:31:53,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630727026] [2023-12-16 17:31:53,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:31:53,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 17:31:53,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:31:53,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 17:31:53,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:53,562 INFO L87 Difference]: Start difference. First operand 60783 states and 105157 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 17:31:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:31:56,418 INFO L93 Difference]: Finished difference Result 113765 states and 197316 transitions. [2023-12-16 17:31:56,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 17:31:56,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2023-12-16 17:31:56,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:31:56,992 INFO L225 Difference]: With dead ends: 113765 [2023-12-16 17:31:56,992 INFO L226 Difference]: Without dead ends: 113582 [2023-12-16 17:31:57,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 17:31:57,031 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 109 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 17:31:57,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1101 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 17:31:57,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113582 states. [2023-12-16 17:32:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113582 to 113577. [2023-12-16 17:32:00,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113577 states, 94940 states have (on average 1.6488729724036233) internal successors, (156544), 94947 states have internal predecessors, (156544), 18609 states have call successors, (18609), 24 states have call predecessors, (18609), 27 states have return successors, (20798), 18605 states have call predecessors, (20798), 18606 states have call successors, (20798) [2023-12-16 17:32:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113577 states to 113577 states and 195951 transitions. [2023-12-16 17:32:01,162 INFO L78 Accepts]: Start accepts. Automaton has 113577 states and 195951 transitions. Word has length 133 [2023-12-16 17:32:01,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:32:01,163 INFO L495 AbstractCegarLoop]: Abstraction has 113577 states and 195951 transitions. [2023-12-16 17:32:01,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-16 17:32:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand 113577 states and 195951 transitions. [2023-12-16 17:32:01,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-16 17:32:01,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:32:01,215 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:32:01,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-12-16 17:32:01,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:32:01,421 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:32:01,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:32:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1288998667, now seen corresponding path program 1 times [2023-12-16 17:32:01,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:32:01,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051033584] [2023-12-16 17:32:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:32:01,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:32:01,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:32:01,423 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:32:01,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-16 17:32:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:32:01,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 17:32:01,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:32:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 17:32:01,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 17:32:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 17:32:01,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:32:01,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051033584] [2023-12-16 17:32:01,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051033584] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 17:32:01,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 17:32:01,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-16 17:32:01,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70070483] [2023-12-16 17:32:01,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 17:32:01,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 17:32:01,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:32:01,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 17:32:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-16 17:32:01,983 INFO L87 Difference]: Start difference. First operand 113577 states and 195951 transitions. Second operand has 14 states, 14 states have (on average 11.928571428571429) internal successors, (167), 14 states have internal predecessors, (167), 4 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-16 17:32:10,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 17:32:10,465 INFO L93 Difference]: Finished difference Result 227361 states and 396569 transitions. [2023-12-16 17:32:10,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 17:32:10,466 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.928571428571429) internal successors, (167), 14 states have internal predecessors, (167), 4 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 134 [2023-12-16 17:32:10,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 17:32:11,451 INFO L225 Difference]: With dead ends: 227361 [2023-12-16 17:32:11,452 INFO L226 Difference]: Without dead ends: 227183 [2023-12-16 17:32:11,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2023-12-16 17:32:11,536 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1897 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 3120 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 3541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 3120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 17:32:11,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 1472 Invalid, 3541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 3120 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 17:32:11,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227183 states. [2023-12-16 17:32:20,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227183 to 227151. [2023-12-16 17:32:20,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227151 states, 189882 states have (on average 1.648876670774481) internal successors, (313092), 189892 states have internal predecessors, (313092), 37214 states have call successors, (37214), 48 states have call predecessors, (37214), 54 states have return successors, (45956), 37210 states have call predecessors, (45956), 37210 states have call successors, (45956) [2023-12-16 17:32:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227151 states to 227151 states and 396262 transitions. [2023-12-16 17:32:22,056 INFO L78 Accepts]: Start accepts. Automaton has 227151 states and 396262 transitions. Word has length 134 [2023-12-16 17:32:22,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 17:32:22,056 INFO L495 AbstractCegarLoop]: Abstraction has 227151 states and 396262 transitions. [2023-12-16 17:32:22,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.928571428571429) internal successors, (167), 14 states have internal predecessors, (167), 4 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2023-12-16 17:32:22,057 INFO L276 IsEmpty]: Start isEmpty. Operand 227151 states and 396262 transitions. [2023-12-16 17:32:22,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-16 17:32:22,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 17:32:22,187 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:32:22,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-12-16 17:32:22,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:32:22,389 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 17:32:22,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 17:32:22,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1696943981, now seen corresponding path program 1 times [2023-12-16 17:32:22,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 17:32:22,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798056564] [2023-12-16 17:32:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 17:32:22,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:32:22,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 17:32:22,391 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 17:32:22,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-16 17:32:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 17:32:22,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 17:32:22,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 17:32:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 17:32:22,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 17:32:22,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 17:32:22,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798056564] [2023-12-16 17:32:22,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798056564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 17:32:22,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 17:32:22,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 17:32:22,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813805026] [2023-12-16 17:32:22,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 17:32:22,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 17:32:22,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 17:32:22,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 17:32:22,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 17:32:22,718 INFO L87 Difference]: Start difference. First operand 227151 states and 396262 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 3 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Received shutdown request... [2023-12-16 17:32:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 17:32:29,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-16 17:32:29,309 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 565 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 17:32:29,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 2606 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 17:32:29,310 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 17:32:29,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-12-16 17:32:29,334 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 17:32:29,334 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 [2023-12-16 17:32:29,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 17:32:29,517 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (227151states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (213056 states constructed, input type IntersectNwa). [2023-12-16 17:32:29,520 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 17:32:29,521 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 17:32:29,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:32:29 BoogieIcfgContainer [2023-12-16 17:32:29,522 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 17:32:29,523 INFO L158 Benchmark]: Toolchain (without parser) took 60381.93ms. Allocated memory was 189.8MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 139.8MB in the beginning and 5.4GB in the end (delta: -5.3GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-12-16 17:32:29,523 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 189.8MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 17:32:29,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 754.83ms. Allocated memory is still 189.8MB. Free memory was 139.8MB in the beginning and 78.2MB in the end (delta: 61.6MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2023-12-16 17:32:29,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.75ms. Allocated memory was 189.8MB in the beginning and 329.3MB in the end (delta: 139.5MB). Free memory was 78.2MB in the beginning and 290.4MB in the end (delta: -212.2MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. [2023-12-16 17:32:29,523 INFO L158 Benchmark]: Boogie Preprocessor took 103.17ms. Allocated memory is still 329.3MB. Free memory was 289.9MB in the beginning and 282.5MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-16 17:32:29,523 INFO L158 Benchmark]: RCFGBuilder took 1161.68ms. Allocated memory is still 329.3MB. Free memory was 282.5MB in the beginning and 283.4MB in the end (delta: -849.4kB). Peak memory consumption was 96.7MB. Max. memory is 8.0GB. [2023-12-16 17:32:29,523 INFO L158 Benchmark]: TraceAbstraction took 58267.92ms. Allocated memory was 329.3MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 282.9MB in the beginning and 5.4GB in the end (delta: -5.2GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-12-16 17:32:29,524 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 189.8MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 754.83ms. Allocated memory is still 189.8MB. Free memory was 139.8MB in the beginning and 78.2MB in the end (delta: 61.6MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 89.75ms. Allocated memory was 189.8MB in the beginning and 329.3MB in the end (delta: 139.5MB). Free memory was 78.2MB in the beginning and 290.4MB in the end (delta: -212.2MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 103.17ms. Allocated memory is still 329.3MB. Free memory was 289.9MB in the beginning and 282.5MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1161.68ms. Allocated memory is still 329.3MB. Free memory was 282.5MB in the beginning and 283.4MB in the end (delta: -849.4kB). Peak memory consumption was 96.7MB. Max. memory is 8.0GB. * TraceAbstraction took 58267.92ms. Allocated memory was 329.3MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 282.9MB in the beginning and 5.4GB in the end (delta: -5.2GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 48]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [48] - GenericResultAtLocation [Line: 460]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [460] - GenericResultAtLocation [Line: 826]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [826] - GenericResultAtLocation [Line: 844]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [844] - GenericResultAtLocation [Line: 1073]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1073] - GenericResultAtLocation [Line: 2153]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2153] - GenericResultAtLocation [Line: 2202]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2202] - GenericResultAtLocation [Line: 2548]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"SignVerify_spec.i","") [2548] - GenericResultAtLocation [Line: 2607]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2607] - GenericResultAtLocation [Line: 2703]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2703] - GenericResultAtLocation [Line: 2991]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2991] * 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: 2996]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 2996). Cancelled while NwaCegarLoop was constructing difference of abstraction (227151states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (213056 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 25 procedures, 371 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 58.2s, OverallIterations: 22, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 25.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4691 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4401 mSDsluCounter, 32800 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20993 mSDsCounter, 491 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4616 IncrementalHoareTripleChecker+Invalid, 5107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 491 mSolverCounterUnsat, 11807 mSDtfsCounter, 4616 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3179 GetRequests, 3105 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=227151occurred in iteration=21, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 20.9s AutomataMinimizationTime, 21 MinimizatonAttempts, 102 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 2909 NumberOfCodeBlocks, 2909 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 3155 ConstructedInterpolants, 0 QuantifiedInterpolants, 4082 SizeOfPredicates, 36 NumberOfNonLiveVariables, 13047 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 24 InterpolantComputations, 20 PerfectInterpolantSequences, 820/836 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