/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:09:36,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:09:36,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:09:36,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:09:36,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:09:36,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:09:36,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:09:36,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:09:36,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:09:36,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:09:36,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:09:36,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:09:36,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:09:36,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:09:36,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:09:36,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:09:36,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:09:36,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:09:36,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:09:36,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:09:36,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:09:36,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:09:36,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:09:36,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:09:36,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 07:09:36,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 07:09:36,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 07:09:36,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 07:09:36,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 07:09:36,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 07:09:36,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:09:36,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:09:36,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:09:36,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:09:36,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:09:36,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:09:36,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:09:36,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:09:36,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:09:36,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:09:36,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:09:36,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 07:09:36,249 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:09:36,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:09:36,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:09:36,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:09:36,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:09:36,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:09:36,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:09:36,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:09:36,250 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:09:36,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:09:36,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:09:36,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:09:36,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:09:36,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:09:36,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:09:36,252 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:09:36,252 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:09:36,252 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:09:36,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:09:36,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:09:36,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:09:36,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:09:36,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:09:36,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:09:36,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:09:36,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:09:36,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:09:36,253 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:09:36,254 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:09:36,254 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:09:36,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:09:36,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:09:36,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:09:36,254 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:09:36,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:09:36,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:09:36,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:09:36,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:09:36,458 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:09:36,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-01-10 07:09:36,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/561361029/36d193a26a2446ccb26076eeed48daaa/FLAG4ddd09e93 [2022-01-10 07:09:37,036 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:09:37,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-01-10 07:09:37,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/561361029/36d193a26a2446ccb26076eeed48daaa/FLAG4ddd09e93 [2022-01-10 07:09:37,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/561361029/36d193a26a2446ccb26076eeed48daaa [2022-01-10 07:09:37,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:09:37,542 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:09:37,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:09:37,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:09:37,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:09:37,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:09:37" (1/1) ... [2022-01-10 07:09:37,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a552eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:37, skipping insertion in model container [2022-01-10 07:09:37,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:09:37" (1/1) ... [2022-01-10 07:09:37,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:09:37,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:09:37,897 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12458,12471] [2022-01-10 07:09:37,920 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19724,19737] [2022-01-10 07:09:37,928 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22076,22089] [2022-01-10 07:09:37,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23196,23209] [2022-01-10 07:09:37,950 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26746,26759] [2022-01-10 07:09:37,954 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27869,27882] [2022-01-10 07:09:37,963 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30184,30197] [2022-01-10 07:09:38,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:09:38,291 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:09:38,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12458,12471] [2022-01-10 07:09:38,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[19724,19737] [2022-01-10 07:09:38,341 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[22076,22089] [2022-01-10 07:09:38,343 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23196,23209] [2022-01-10 07:09:38,350 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[26746,26759] [2022-01-10 07:09:38,352 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[27869,27882] [2022-01-10 07:09:38,356 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[30184,30197] [2022-01-10 07:09:38,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:09:38,544 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:09:38,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:38 WrapperNode [2022-01-10 07:09:38,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:09:38,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:09:38,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:09:38,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:09:38,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:38" (1/1) ... [2022-01-10 07:09:38,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:38" (1/1) ... [2022-01-10 07:09:38,682 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6995 [2022-01-10 07:09:38,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:09:38,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:09:38,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:09:38,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:09:38,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:38" (1/1) ... [2022-01-10 07:09:38,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:38" (1/1) ... [2022-01-10 07:09:38,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:38" (1/1) ... [2022-01-10 07:09:38,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:38" (1/1) ... [2022-01-10 07:09:38,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:38" (1/1) ... [2022-01-10 07:09:38,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:38" (1/1) ... [2022-01-10 07:09:38,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:38" (1/1) ... [2022-01-10 07:09:38,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:09:38,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:09:38,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:09:38,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:09:38,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:38" (1/1) ... [2022-01-10 07:09:38,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:09:38,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:09:38,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 07:09:38,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:09:38,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:09:38,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:09:38,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:09:38,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 07:09:39,180 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:09:39,181 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:09:41,938 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:09:41,951 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:09:41,951 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 07:09:41,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:09:41 BoogieIcfgContainer [2022-01-10 07:09:41,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:09:41,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:09:41,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:09:41,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:09:41,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:09:37" (1/3) ... [2022-01-10 07:09:41,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf551ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:09:41, skipping insertion in model container [2022-01-10 07:09:41,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:09:38" (2/3) ... [2022-01-10 07:09:41,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf551ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:09:41, skipping insertion in model container [2022-01-10 07:09:41,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:09:41" (3/3) ... [2022-01-10 07:09:41,959 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-01-10 07:09:41,963 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:09:41,963 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-01-10 07:09:41,999 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:09:42,003 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 07:09:42,004 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-10 07:09:42,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 1106 states, 1098 states have (on average 1.8852459016393444) internal successors, (2070), 1105 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:42,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 07:09:42,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:42,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:42,047 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:42,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:42,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1160265217, now seen corresponding path program 1 times [2022-01-10 07:09:42,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:42,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763709606] [2022-01-10 07:09:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:42,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:42,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:42,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:42,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 07:09:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:42,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:09:42,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:42,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:42,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:42,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763709606] [2022-01-10 07:09:42,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763709606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:42,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:42,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:09:42,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81807411] [2022-01-10 07:09:42,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:42,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:09:42,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:42,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:09:42,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:09:42,766 INFO L87 Difference]: Start difference. First operand has 1106 states, 1098 states have (on average 1.8852459016393444) internal successors, (2070), 1105 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:43,410 INFO L93 Difference]: Finished difference Result 1368 states and 2491 transitions. [2022-01-10 07:09:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:09:43,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 07:09:43,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:43,431 INFO L225 Difference]: With dead ends: 1368 [2022-01-10 07:09:43,431 INFO L226 Difference]: Without dead ends: 830 [2022-01-10 07:09:43,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:43,437 INFO L933 BasicCegarLoop]: 1528 mSDtfsCounter, 69 mSDsluCounter, 3076 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 4604 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 471 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:43,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 4604 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 915 Invalid, 0 Unknown, 471 Unchecked, 0.6s Time] [2022-01-10 07:09:43,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-01-10 07:09:43,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2022-01-10 07:09:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 823 states have (on average 1.3122721749696233) internal successors, (1080), 829 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:43,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1080 transitions. [2022-01-10 07:09:43,490 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1080 transitions. Word has length 64 [2022-01-10 07:09:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:43,490 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 1080 transitions. [2022-01-10 07:09:43,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:43,491 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1080 transitions. [2022-01-10 07:09:43,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 07:09:43,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:43,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:43,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:09:43,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:43,702 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:43,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:43,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1913482263, now seen corresponding path program 1 times [2022-01-10 07:09:43,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:43,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144668085] [2022-01-10 07:09:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:43,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:43,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:43,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:43,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 07:09:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:43,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:09:43,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:44,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:44,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:44,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144668085] [2022-01-10 07:09:44,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144668085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:44,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:44,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:09:44,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335342382] [2022-01-10 07:09:44,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:44,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:09:44,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:44,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:09:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:09:44,217 INFO L87 Difference]: Start difference. First operand 830 states and 1080 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:44,710 INFO L93 Difference]: Finished difference Result 1170 states and 1562 transitions. [2022-01-10 07:09:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:09:44,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 07:09:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:44,713 INFO L225 Difference]: With dead ends: 1170 [2022-01-10 07:09:44,713 INFO L226 Difference]: Without dead ends: 835 [2022-01-10 07:09:44,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:44,715 INFO L933 BasicCegarLoop]: 1069 mSDtfsCounter, 25 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 405 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:44,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 3044 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 778 Invalid, 0 Unknown, 405 Unchecked, 0.5s Time] [2022-01-10 07:09:44,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-01-10 07:09:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 834. [2022-01-10 07:09:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 827 states have (on average 1.3119709794437726) internal successors, (1085), 833 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1085 transitions. [2022-01-10 07:09:44,745 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1085 transitions. Word has length 65 [2022-01-10 07:09:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:44,745 INFO L470 AbstractCegarLoop]: Abstraction has 834 states and 1085 transitions. [2022-01-10 07:09:44,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:44,746 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1085 transitions. [2022-01-10 07:09:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:09:44,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:44,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:44,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 07:09:44,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:44,948 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:44,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1857639072, now seen corresponding path program 1 times [2022-01-10 07:09:44,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:44,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850021272] [2022-01-10 07:09:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:44,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:44,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:44,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:44,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 07:09:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:45,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:09:45,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:45,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:45,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:45,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850021272] [2022-01-10 07:09:45,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850021272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:45,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:45,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:09:45,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096715472] [2022-01-10 07:09:45,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:45,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:09:45,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:09:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:09:45,308 INFO L87 Difference]: Start difference. First operand 834 states and 1085 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:45,361 INFO L93 Difference]: Finished difference Result 1697 states and 2249 transitions. [2022-01-10 07:09:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:09:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 07:09:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:45,364 INFO L225 Difference]: With dead ends: 1697 [2022-01-10 07:09:45,364 INFO L226 Difference]: Without dead ends: 900 [2022-01-10 07:09:45,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:09:45,366 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 926 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:45,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [926 Valid, 1182 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:09:45,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-01-10 07:09:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 892. [2022-01-10 07:09:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 885 states have (on average 1.3536723163841808) internal successors, (1198), 891 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1198 transitions. [2022-01-10 07:09:45,383 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1198 transitions. Word has length 66 [2022-01-10 07:09:45,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:45,383 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 1198 transitions. [2022-01-10 07:09:45,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:45,383 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1198 transitions. [2022-01-10 07:09:45,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:09:45,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:45,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:45,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:09:45,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:45,591 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1925029164, now seen corresponding path program 1 times [2022-01-10 07:09:45,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:45,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623551270] [2022-01-10 07:09:45,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:45,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:45,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:45,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:45,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 07:09:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:45,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:09:45,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:46,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:46,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:46,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623551270] [2022-01-10 07:09:46,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623551270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:46,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:46,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:09:46,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411522309] [2022-01-10 07:09:46,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:46,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:09:46,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:46,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:09:46,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:46,282 INFO L87 Difference]: Start difference. First operand 892 states and 1198 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:46,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:46,342 INFO L93 Difference]: Finished difference Result 1418 states and 1981 transitions. [2022-01-10 07:09:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:09:46,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 07:09:46,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:46,346 INFO L225 Difference]: With dead ends: 1418 [2022-01-10 07:09:46,346 INFO L226 Difference]: Without dead ends: 1009 [2022-01-10 07:09:46,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:46,347 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 132 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:46,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 2711 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 116 Unchecked, 0.0s Time] [2022-01-10 07:09:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-01-10 07:09:46,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 882. [2022-01-10 07:09:46,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 875 states have (on average 1.3542857142857143) internal successors, (1185), 881 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:46,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1185 transitions. [2022-01-10 07:09:46,363 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1185 transitions. Word has length 66 [2022-01-10 07:09:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:46,364 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 1185 transitions. [2022-01-10 07:09:46,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1185 transitions. [2022-01-10 07:09:46,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:09:46,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:46,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:46,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 07:09:46,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:46,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:46,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:46,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1468803498, now seen corresponding path program 1 times [2022-01-10 07:09:46,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:46,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435418741] [2022-01-10 07:09:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:46,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:46,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:46,576 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:46,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 07:09:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:46,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:09:46,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:47,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:47,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:47,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435418741] [2022-01-10 07:09:47,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435418741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:47,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:47,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:09:47,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991649690] [2022-01-10 07:09:47,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:47,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:09:47,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:47,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:09:47,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:09:47,013 INFO L87 Difference]: Start difference. First operand 882 states and 1185 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:47,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:47,484 INFO L93 Difference]: Finished difference Result 1293 states and 1799 transitions. [2022-01-10 07:09:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:09:47,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 07:09:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:47,488 INFO L225 Difference]: With dead ends: 1293 [2022-01-10 07:09:47,488 INFO L226 Difference]: Without dead ends: 891 [2022-01-10 07:09:47,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:47,489 INFO L933 BasicCegarLoop]: 938 mSDtfsCounter, 29 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:47,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 2088 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 702 Invalid, 0 Unknown, 19 Unchecked, 0.4s Time] [2022-01-10 07:09:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-01-10 07:09:47,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 889. [2022-01-10 07:09:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 882 states have (on average 1.3537414965986394) internal successors, (1194), 888 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1194 transitions. [2022-01-10 07:09:47,527 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1194 transitions. Word has length 66 [2022-01-10 07:09:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:47,528 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1194 transitions. [2022-01-10 07:09:47,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1194 transitions. [2022-01-10 07:09:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:09:47,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:47,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:47,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 07:09:47,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:47,730 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:47,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1245628211, now seen corresponding path program 1 times [2022-01-10 07:09:47,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:47,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750329686] [2022-01-10 07:09:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:47,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:47,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:47,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:47,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 07:09:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:47,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:09:47,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:48,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:48,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:48,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:48,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750329686] [2022-01-10 07:09:48,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750329686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:48,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:48,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:09:48,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314695937] [2022-01-10 07:09:48,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:48,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:09:48,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:48,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:09:48,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:09:48,191 INFO L87 Difference]: Start difference. First operand 889 states and 1194 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:48,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:48,521 INFO L93 Difference]: Finished difference Result 1309 states and 1817 transitions. [2022-01-10 07:09:48,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:09:48,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 07:09:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:48,524 INFO L225 Difference]: With dead ends: 1309 [2022-01-10 07:09:48,524 INFO L226 Difference]: Without dead ends: 890 [2022-01-10 07:09:48,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:48,525 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 23 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 361 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:48,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 2657 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 353 Invalid, 0 Unknown, 361 Unchecked, 0.3s Time] [2022-01-10 07:09:48,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-01-10 07:09:48,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 890. [2022-01-10 07:09:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 883 states have (on average 1.3533408833522085) internal successors, (1195), 889 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1195 transitions. [2022-01-10 07:09:48,539 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1195 transitions. Word has length 66 [2022-01-10 07:09:48,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:48,539 INFO L470 AbstractCegarLoop]: Abstraction has 890 states and 1195 transitions. [2022-01-10 07:09:48,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1195 transitions. [2022-01-10 07:09:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 07:09:48,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:48,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:48,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 07:09:48,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:48,750 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:48,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash -256211641, now seen corresponding path program 1 times [2022-01-10 07:09:48,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:48,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581862972] [2022-01-10 07:09:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:48,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:48,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:48,752 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:48,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 07:09:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:48,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:09:48,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:49,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:49,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:49,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581862972] [2022-01-10 07:09:49,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581862972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:49,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:49,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:09:49,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42737433] [2022-01-10 07:09:49,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:49,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:09:49,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:49,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:09:49,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:09:49,236 INFO L87 Difference]: Start difference. First operand 890 states and 1195 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:49,626 INFO L93 Difference]: Finished difference Result 1289 states and 1792 transitions. [2022-01-10 07:09:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:09:49,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 07:09:49,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:49,628 INFO L225 Difference]: With dead ends: 1289 [2022-01-10 07:09:49,629 INFO L226 Difference]: Without dead ends: 802 [2022-01-10 07:09:49,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:49,630 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 25 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:49,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 1868 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 598 Invalid, 0 Unknown, 14 Unchecked, 0.4s Time] [2022-01-10 07:09:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-01-10 07:09:49,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2022-01-10 07:09:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 795 states have (on average 1.3660377358490565) internal successors, (1086), 801 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1086 transitions. [2022-01-10 07:09:49,644 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1086 transitions. Word has length 66 [2022-01-10 07:09:49,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:49,644 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 1086 transitions. [2022-01-10 07:09:49,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1086 transitions. [2022-01-10 07:09:49,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:09:49,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:49,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:49,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:09:49,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:49,856 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:49,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1182473178, now seen corresponding path program 1 times [2022-01-10 07:09:49,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:49,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461614715] [2022-01-10 07:09:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:49,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:49,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:49,859 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:49,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 07:09:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:50,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:09:50,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:50,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:50,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:50,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461614715] [2022-01-10 07:09:50,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461614715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:50,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:50,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:09:50,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543557345] [2022-01-10 07:09:50,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:50,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:09:50,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:50,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:09:50,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:09:50,316 INFO L87 Difference]: Start difference. First operand 802 states and 1086 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:50,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:50,704 INFO L93 Difference]: Finished difference Result 1214 states and 1703 transitions. [2022-01-10 07:09:50,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:09:50,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 07:09:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:50,706 INFO L225 Difference]: With dead ends: 1214 [2022-01-10 07:09:50,707 INFO L226 Difference]: Without dead ends: 812 [2022-01-10 07:09:50,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:50,708 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 23 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 338 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:50,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 2319 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 609 Invalid, 0 Unknown, 338 Unchecked, 0.4s Time] [2022-01-10 07:09:50,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-01-10 07:09:50,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 809. [2022-01-10 07:09:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 802 states have (on average 1.366583541147132) internal successors, (1096), 808 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1096 transitions. [2022-01-10 07:09:50,722 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1096 transitions. Word has length 67 [2022-01-10 07:09:50,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:50,723 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 1096 transitions. [2022-01-10 07:09:50,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:50,723 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1096 transitions. [2022-01-10 07:09:50,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:09:50,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:50,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:50,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:09:50,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:50,933 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:50,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2083607812, now seen corresponding path program 1 times [2022-01-10 07:09:50,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:50,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268336909] [2022-01-10 07:09:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:50,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:50,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:50,936 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:50,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 07:09:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:51,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:09:51,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:51,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:51,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:51,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268336909] [2022-01-10 07:09:51,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268336909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:51,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:51,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:09:51,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118120633] [2022-01-10 07:09:51,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:51,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:09:51,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:51,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:09:51,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:51,325 INFO L87 Difference]: Start difference. First operand 809 states and 1096 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:51,902 INFO L93 Difference]: Finished difference Result 1782 states and 2558 transitions. [2022-01-10 07:09:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:09:51,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 07:09:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:51,906 INFO L225 Difference]: With dead ends: 1782 [2022-01-10 07:09:51,906 INFO L226 Difference]: Without dead ends: 1387 [2022-01-10 07:09:51,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:09:51,907 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 3577 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3577 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:51,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3577 Valid, 1318 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:09:51,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2022-01-10 07:09:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 813. [2022-01-10 07:09:51,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 806 states have (on average 1.3598014888337469) internal successors, (1096), 812 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:51,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1096 transitions. [2022-01-10 07:09:51,928 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1096 transitions. Word has length 67 [2022-01-10 07:09:51,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:51,928 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 1096 transitions. [2022-01-10 07:09:51,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1096 transitions. [2022-01-10 07:09:51,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:09:51,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:51,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:51,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:09:52,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:52,137 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:52,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:52,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1807374316, now seen corresponding path program 1 times [2022-01-10 07:09:52,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:52,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894776115] [2022-01-10 07:09:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:52,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:52,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:52,139 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:52,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 07:09:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:52,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:09:52,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:52,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:52,487 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:52,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894776115] [2022-01-10 07:09:52,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894776115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:52,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:52,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:09:52,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856791676] [2022-01-10 07:09:52,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:52,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:09:52,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:52,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:09:52,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:09:52,489 INFO L87 Difference]: Start difference. First operand 813 states and 1096 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:52,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:52,546 INFO L93 Difference]: Finished difference Result 1445 states and 2024 transitions. [2022-01-10 07:09:52,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:09:52,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 07:09:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:52,550 INFO L225 Difference]: With dead ends: 1445 [2022-01-10 07:09:52,550 INFO L226 Difference]: Without dead ends: 1096 [2022-01-10 07:09:52,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:09:52,551 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 434 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:52,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 1458 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:09:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-01-10 07:09:52,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1088. [2022-01-10 07:09:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1081 states have (on average 1.3829787234042554) internal successors, (1495), 1087 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:52,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1495 transitions. [2022-01-10 07:09:52,581 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1495 transitions. Word has length 67 [2022-01-10 07:09:52,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:52,581 INFO L470 AbstractCegarLoop]: Abstraction has 1088 states and 1495 transitions. [2022-01-10 07:09:52,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:52,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1495 transitions. [2022-01-10 07:09:52,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:09:52,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:52,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:52,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-01-10 07:09:52,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:52,791 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:52,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1929330418, now seen corresponding path program 1 times [2022-01-10 07:09:52,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:52,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807810281] [2022-01-10 07:09:52,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:52,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:52,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:52,793 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:52,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:09:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:53,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:09:53,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:53,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:53,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:53,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807810281] [2022-01-10 07:09:53,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807810281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:53,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:53,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:09:53,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975788495] [2022-01-10 07:09:53,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:53,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:09:53,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:53,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:09:53,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:53,242 INFO L87 Difference]: Start difference. First operand 1088 states and 1495 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:53,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:53,895 INFO L93 Difference]: Finished difference Result 3404 states and 4945 transitions. [2022-01-10 07:09:53,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:09:53,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 07:09:53,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:53,903 INFO L225 Difference]: With dead ends: 3404 [2022-01-10 07:09:53,903 INFO L226 Difference]: Without dead ends: 2880 [2022-01-10 07:09:53,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:09:53,905 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 2714 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:53,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2714 Valid, 1420 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:09:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2022-01-10 07:09:53,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1126. [2022-01-10 07:09:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 1119 states have (on average 1.3717605004468276) internal successors, (1535), 1125 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1535 transitions. [2022-01-10 07:09:53,942 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1535 transitions. Word has length 67 [2022-01-10 07:09:53,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:53,942 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1535 transitions. [2022-01-10 07:09:53,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:53,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1535 transitions. [2022-01-10 07:09:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:09:53,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:53,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:53,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:09:54,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:54,152 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:54,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2029107997, now seen corresponding path program 1 times [2022-01-10 07:09:54,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:54,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858794576] [2022-01-10 07:09:54,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:54,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:54,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:54,154 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:54,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:09:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:54,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:09:54,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:54,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:54,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:54,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858794576] [2022-01-10 07:09:54,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858794576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:54,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:54,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:09:54,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810569259] [2022-01-10 07:09:54,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:54,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:09:54,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:54,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:09:54,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:09:54,599 INFO L87 Difference]: Start difference. First operand 1126 states and 1535 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:54,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:54,849 INFO L93 Difference]: Finished difference Result 1669 states and 2323 transitions. [2022-01-10 07:09:54,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:09:54,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 07:09:54,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:54,852 INFO L225 Difference]: With dead ends: 1669 [2022-01-10 07:09:54,852 INFO L226 Difference]: Without dead ends: 1127 [2022-01-10 07:09:54,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:54,854 INFO L933 BasicCegarLoop]: 826 mSDtfsCounter, 32 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:54,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 1869 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 315 Unchecked, 0.2s Time] [2022-01-10 07:09:54,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-01-10 07:09:54,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1127. [2022-01-10 07:09:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1120 states have (on average 1.3714285714285714) internal successors, (1536), 1126 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:54,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1536 transitions. [2022-01-10 07:09:54,880 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1536 transitions. Word has length 67 [2022-01-10 07:09:54,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:54,880 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1536 transitions. [2022-01-10 07:09:54,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1536 transitions. [2022-01-10 07:09:54,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:09:54,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:54,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:54,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 07:09:55,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:55,089 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:55,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1898952372, now seen corresponding path program 1 times [2022-01-10 07:09:55,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:55,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741624575] [2022-01-10 07:09:55,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:55,090 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:55,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:55,091 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:55,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:09:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:55,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:09:55,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:55,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:55,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:55,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741624575] [2022-01-10 07:09:55,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741624575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:55,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:55,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:09:55,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592740222] [2022-01-10 07:09:55,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:55,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:09:55,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:55,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:09:55,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:09:55,386 INFO L87 Difference]: Start difference. First operand 1127 states and 1536 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:55,492 INFO L93 Difference]: Finished difference Result 2579 states and 3569 transitions. [2022-01-10 07:09:55,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:09:55,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 07:09:55,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:55,497 INFO L225 Difference]: With dead ends: 2579 [2022-01-10 07:09:55,497 INFO L226 Difference]: Without dead ends: 1513 [2022-01-10 07:09:55,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:09:55,499 INFO L933 BasicCegarLoop]: 752 mSDtfsCounter, 728 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:55,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 975 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:09:55,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2022-01-10 07:09:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1505. [2022-01-10 07:09:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1498 states have (on average 1.3978638184245662) internal successors, (2094), 1504 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2094 transitions. [2022-01-10 07:09:55,545 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2094 transitions. Word has length 67 [2022-01-10 07:09:55,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:55,546 INFO L470 AbstractCegarLoop]: Abstraction has 1505 states and 2094 transitions. [2022-01-10 07:09:55,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2094 transitions. [2022-01-10 07:09:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:09:55,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:55,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:55,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:09:55,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:55,755 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:55,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:55,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1580524107, now seen corresponding path program 1 times [2022-01-10 07:09:55,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:55,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957626190] [2022-01-10 07:09:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:55,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:55,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:55,757 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:55,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:09:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:55,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:09:55,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:56,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:56,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:56,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957626190] [2022-01-10 07:09:56,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957626190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:56,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:56,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:09:56,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274272314] [2022-01-10 07:09:56,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:56,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:09:56,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:56,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:09:56,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:09:56,056 INFO L87 Difference]: Start difference. First operand 1505 states and 2094 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:56,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:56,130 INFO L93 Difference]: Finished difference Result 3120 states and 4463 transitions. [2022-01-10 07:09:56,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:09:56,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 07:09:56,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:56,136 INFO L225 Difference]: With dead ends: 3120 [2022-01-10 07:09:56,136 INFO L226 Difference]: Without dead ends: 2238 [2022-01-10 07:09:56,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:09:56,137 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 367 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:56,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 1452 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:09:56,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2022-01-10 07:09:56,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 2226. [2022-01-10 07:09:56,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 2219 states have (on average 1.4159531320414602) internal successors, (3142), 2225 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3142 transitions. [2022-01-10 07:09:56,209 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3142 transitions. Word has length 67 [2022-01-10 07:09:56,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:56,210 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 3142 transitions. [2022-01-10 07:09:56,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3142 transitions. [2022-01-10 07:09:56,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:09:56,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:56,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:56,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 07:09:56,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:56,420 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:56,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1110104821, now seen corresponding path program 1 times [2022-01-10 07:09:56,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:56,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032225529] [2022-01-10 07:09:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:56,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:56,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:56,421 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:56,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:09:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:56,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:09:56,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:56,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:56,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:56,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032225529] [2022-01-10 07:09:56,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032225529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:56,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:56,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:09:56,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092679352] [2022-01-10 07:09:56,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:56,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:09:56,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:56,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:09:56,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:09:56,861 INFO L87 Difference]: Start difference. First operand 2226 states and 3142 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:57,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:57,180 INFO L93 Difference]: Finished difference Result 2820 states and 4007 transitions. [2022-01-10 07:09:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:09:57,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 07:09:57,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:57,185 INFO L225 Difference]: With dead ends: 2820 [2022-01-10 07:09:57,186 INFO L226 Difference]: Without dead ends: 2223 [2022-01-10 07:09:57,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:57,187 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 22 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:57,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2080 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 305 Unchecked, 0.2s Time] [2022-01-10 07:09:57,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2022-01-10 07:09:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2223. [2022-01-10 07:09:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 2216 states have (on average 1.4160649819494584) internal successors, (3138), 2222 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:57,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3138 transitions. [2022-01-10 07:09:57,260 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3138 transitions. Word has length 67 [2022-01-10 07:09:57,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:57,260 INFO L470 AbstractCegarLoop]: Abstraction has 2223 states and 3138 transitions. [2022-01-10 07:09:57,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3138 transitions. [2022-01-10 07:09:57,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:09:57,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:57,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:57,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 07:09:57,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:57,469 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:57,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:57,469 INFO L85 PathProgramCache]: Analyzing trace with hash 208970187, now seen corresponding path program 1 times [2022-01-10 07:09:57,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:57,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566937880] [2022-01-10 07:09:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:57,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:57,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:57,471 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:57,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:09:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:57,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:09:57,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:57,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:57,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:57,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566937880] [2022-01-10 07:09:57,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566937880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:57,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:57,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:09:57,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495765118] [2022-01-10 07:09:57,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:57,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:09:57,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:57,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:09:57,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:57,862 INFO L87 Difference]: Start difference. First operand 2223 states and 3138 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:58,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:58,697 INFO L93 Difference]: Finished difference Result 9176 states and 13318 transitions. [2022-01-10 07:09:58,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:09:58,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 07:09:58,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:58,730 INFO L225 Difference]: With dead ends: 9176 [2022-01-10 07:09:58,730 INFO L226 Difference]: Without dead ends: 7757 [2022-01-10 07:09:58,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:09:58,734 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 3408 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3408 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:58,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3408 Valid, 1308 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:09:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7757 states. [2022-01-10 07:09:58,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7757 to 2369. [2022-01-10 07:09:58,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2369 states, 2362 states have (on average 1.3945808636748518) internal successors, (3294), 2368 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2369 states to 2369 states and 3294 transitions. [2022-01-10 07:09:58,861 INFO L78 Accepts]: Start accepts. Automaton has 2369 states and 3294 transitions. Word has length 67 [2022-01-10 07:09:58,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:09:58,861 INFO L470 AbstractCegarLoop]: Abstraction has 2369 states and 3294 transitions. [2022-01-10 07:09:58,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:58,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2369 states and 3294 transitions. [2022-01-10 07:09:58,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:09:58,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:09:58,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:09:58,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 07:09:59,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:09:59,071 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:09:59,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:09:59,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1619905654, now seen corresponding path program 1 times [2022-01-10 07:09:59,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:09:59,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395649730] [2022-01-10 07:09:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:09:59,072 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:09:59,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:09:59,073 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:09:59,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:09:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:09:59,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:09:59,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:09:59,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:09:59,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:09:59,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:09:59,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395649730] [2022-01-10 07:09:59,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395649730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:09:59,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:09:59,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:09:59,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322098062] [2022-01-10 07:09:59,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:09:59,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:09:59,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:09:59,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:09:59,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:09:59,532 INFO L87 Difference]: Start difference. First operand 2369 states and 3294 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:09:59,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:09:59,920 INFO L93 Difference]: Finished difference Result 2981 states and 4170 transitions. [2022-01-10 07:09:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:09:59,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 07:09:59,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:09:59,924 INFO L225 Difference]: With dead ends: 2981 [2022-01-10 07:09:59,924 INFO L226 Difference]: Without dead ends: 2366 [2022-01-10 07:09:59,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:09:59,925 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 22 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 302 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:09:59,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2095 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 543 Invalid, 0 Unknown, 302 Unchecked, 0.3s Time] [2022-01-10 07:09:59,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2022-01-10 07:10:00,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2366. [2022-01-10 07:10:00,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2359 states have (on average 1.3946587537091988) internal successors, (3290), 2365 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 3290 transitions. [2022-01-10 07:10:00,051 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 3290 transitions. Word has length 67 [2022-01-10 07:10:00,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:00,051 INFO L470 AbstractCegarLoop]: Abstraction has 2366 states and 3290 transitions. [2022-01-10 07:10:00,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 3290 transitions. [2022-01-10 07:10:00,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 07:10:00,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:00,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:00,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 07:10:00,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:00,261 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:00,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash 718771020, now seen corresponding path program 1 times [2022-01-10 07:10:00,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:00,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176675806] [2022-01-10 07:10:00,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:00,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:00,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:00,263 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:00,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:10:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:00,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:00,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:00,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:00,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:00,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176675806] [2022-01-10 07:10:00,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176675806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:00,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:00,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:00,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649016141] [2022-01-10 07:10:00,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:00,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:00,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:00,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:00,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:00,568 INFO L87 Difference]: Start difference. First operand 2366 states and 3290 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:00,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:00,723 INFO L93 Difference]: Finished difference Result 5317 states and 7538 transitions. [2022-01-10 07:10:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:00,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 07:10:00,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:00,729 INFO L225 Difference]: With dead ends: 5317 [2022-01-10 07:10:00,729 INFO L226 Difference]: Without dead ends: 3677 [2022-01-10 07:10:00,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:00,731 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 385 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:00,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 1462 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:10:00,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2022-01-10 07:10:00,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3661. [2022-01-10 07:10:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3661 states, 3654 states have (on average 1.4025725232621784) internal successors, (5125), 3660 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 5125 transitions. [2022-01-10 07:10:00,909 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 5125 transitions. Word has length 67 [2022-01-10 07:10:00,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:00,909 INFO L470 AbstractCegarLoop]: Abstraction has 3661 states and 5125 transitions. [2022-01-10 07:10:00,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:00,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 5125 transitions. [2022-01-10 07:10:00,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:10:00,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:00,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:00,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:01,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:01,119 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:01,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:01,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1820809986, now seen corresponding path program 1 times [2022-01-10 07:10:01,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:01,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567158974] [2022-01-10 07:10:01,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:01,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:01,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:01,121 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:01,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:10:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:01,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:01,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:01,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:01,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:01,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567158974] [2022-01-10 07:10:01,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567158974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:01,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:01,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:01,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439931070] [2022-01-10 07:10:01,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:01,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:01,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:01,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:01,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:01,419 INFO L87 Difference]: Start difference. First operand 3661 states and 5125 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:01,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:01,707 INFO L93 Difference]: Finished difference Result 8919 states and 12570 transitions. [2022-01-10 07:10:01,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:01,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 07:10:01,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:01,717 INFO L225 Difference]: With dead ends: 8919 [2022-01-10 07:10:01,718 INFO L226 Difference]: Without dead ends: 6267 [2022-01-10 07:10:01,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:01,722 INFO L933 BasicCegarLoop]: 845 mSDtfsCounter, 398 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:01,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 1397 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:10:01,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2022-01-10 07:10:02,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 6259. [2022-01-10 07:10:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6259 states, 6252 states have (on average 1.3862763915547025) internal successors, (8667), 6258 states have internal predecessors, (8667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6259 states to 6259 states and 8667 transitions. [2022-01-10 07:10:02,051 INFO L78 Accepts]: Start accepts. Automaton has 6259 states and 8667 transitions. Word has length 68 [2022-01-10 07:10:02,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:02,051 INFO L470 AbstractCegarLoop]: Abstraction has 6259 states and 8667 transitions. [2022-01-10 07:10:02,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6259 states and 8667 transitions. [2022-01-10 07:10:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:10:02,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:02,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:02,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:02,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:02,265 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:02,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:02,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1573022676, now seen corresponding path program 1 times [2022-01-10 07:10:02,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:02,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927306417] [2022-01-10 07:10:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:02,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:02,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:02,267 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:02,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:10:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:02,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:02,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:02,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:02,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:02,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:02,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927306417] [2022-01-10 07:10:02,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927306417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:02,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:02,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:02,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052598180] [2022-01-10 07:10:02,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:02,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:02,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:02,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:02,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:02,698 INFO L87 Difference]: Start difference. First operand 6259 states and 8667 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:03,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:03,180 INFO L93 Difference]: Finished difference Result 8141 states and 11332 transitions. [2022-01-10 07:10:03,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:03,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 07:10:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:03,190 INFO L225 Difference]: With dead ends: 8141 [2022-01-10 07:10:03,190 INFO L226 Difference]: Without dead ends: 6252 [2022-01-10 07:10:03,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:03,194 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 34 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:03,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1245 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2022-01-10 07:10:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6252 states. [2022-01-10 07:10:03,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6252 to 6252. [2022-01-10 07:10:03,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6245 states have (on average 1.3865492393915133) internal successors, (8659), 6251 states have internal predecessors, (8659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 8659 transitions. [2022-01-10 07:10:03,575 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 8659 transitions. Word has length 68 [2022-01-10 07:10:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:03,576 INFO L470 AbstractCegarLoop]: Abstraction has 6252 states and 8659 transitions. [2022-01-10 07:10:03,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 8659 transitions. [2022-01-10 07:10:03,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:10:03,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:03,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:03,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:03,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:03,779 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:03,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash -770234336, now seen corresponding path program 1 times [2022-01-10 07:10:03,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:03,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360426125] [2022-01-10 07:10:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:03,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:03,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:03,781 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:03,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:10:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:04,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:04,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:04,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:04,607 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:04,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360426125] [2022-01-10 07:10:04,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360426125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:04,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:04,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:10:04,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719157331] [2022-01-10 07:10:04,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:04,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:10:04,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:04,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:10:04,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:04,608 INFO L87 Difference]: Start difference. First operand 6252 states and 8659 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:05,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:05,119 INFO L93 Difference]: Finished difference Result 7194 states and 9970 transitions. [2022-01-10 07:10:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:10:05,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 07:10:05,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:05,128 INFO L225 Difference]: With dead ends: 7194 [2022-01-10 07:10:05,128 INFO L226 Difference]: Without dead ends: 6269 [2022-01-10 07:10:05,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:05,131 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 77 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:05,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1365 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 245 Invalid, 0 Unknown, 65 Unchecked, 0.2s Time] [2022-01-10 07:10:05,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2022-01-10 07:10:05,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 6261. [2022-01-10 07:10:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6261 states, 6254 states have (on average 1.3866325551646945) internal successors, (8672), 6260 states have internal predecessors, (8672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 8672 transitions. [2022-01-10 07:10:05,465 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 8672 transitions. Word has length 68 [2022-01-10 07:10:05,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:05,466 INFO L470 AbstractCegarLoop]: Abstraction has 6261 states and 8672 transitions. [2022-01-10 07:10:05,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:05,466 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 8672 transitions. [2022-01-10 07:10:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:10:05,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:05,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:05,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-01-10 07:10:05,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:05,676 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:05,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:05,677 INFO L85 PathProgramCache]: Analyzing trace with hash -42534738, now seen corresponding path program 1 times [2022-01-10 07:10:05,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:05,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464483891] [2022-01-10 07:10:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:05,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:05,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:05,678 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:05,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:10:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:05,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:05,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:06,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:06,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:06,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464483891] [2022-01-10 07:10:06,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464483891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:06,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:06,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:06,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833740605] [2022-01-10 07:10:06,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:06,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:06,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:06,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:06,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:06,107 INFO L87 Difference]: Start difference. First operand 6261 states and 8672 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:06,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:06,657 INFO L93 Difference]: Finished difference Result 8457 states and 11739 transitions. [2022-01-10 07:10:06,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:06,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 07:10:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:06,667 INFO L225 Difference]: With dead ends: 8457 [2022-01-10 07:10:06,668 INFO L226 Difference]: Without dead ends: 6241 [2022-01-10 07:10:06,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:06,672 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 24 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:06,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 2054 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 511 Invalid, 0 Unknown, 275 Unchecked, 0.3s Time] [2022-01-10 07:10:06,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2022-01-10 07:10:06,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6241. [2022-01-10 07:10:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6241 states, 6234 states have (on average 1.3870709015078602) internal successors, (8647), 6240 states have internal predecessors, (8647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:06,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6241 states to 6241 states and 8647 transitions. [2022-01-10 07:10:06,996 INFO L78 Accepts]: Start accepts. Automaton has 6241 states and 8647 transitions. Word has length 68 [2022-01-10 07:10:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:06,996 INFO L470 AbstractCegarLoop]: Abstraction has 6241 states and 8647 transitions. [2022-01-10 07:10:06,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:06,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6241 states and 8647 transitions. [2022-01-10 07:10:07,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:10:07,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:07,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:07,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:07,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:07,208 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:07,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash 77730287, now seen corresponding path program 1 times [2022-01-10 07:10:07,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:07,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107124171] [2022-01-10 07:10:07,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:07,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:07,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:07,211 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:07,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:10:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:07,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:07,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:07,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:07,655 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:07,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107124171] [2022-01-10 07:10:07,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107124171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:07,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:07,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:07,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045606958] [2022-01-10 07:10:07,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:07,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:07,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:07,657 INFO L87 Difference]: Start difference. First operand 6241 states and 8647 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:08,193 INFO L93 Difference]: Finished difference Result 8199 states and 11412 transitions. [2022-01-10 07:10:08,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:08,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 07:10:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:08,201 INFO L225 Difference]: With dead ends: 8199 [2022-01-10 07:10:08,201 INFO L226 Difference]: Without dead ends: 6238 [2022-01-10 07:10:08,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:08,205 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 35 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:08,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1195 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 23 Unchecked, 0.2s Time] [2022-01-10 07:10:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2022-01-10 07:10:08,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 6238. [2022-01-10 07:10:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 6231 states have (on average 1.3870967741935485) internal successors, (8643), 6237 states have internal predecessors, (8643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 8643 transitions. [2022-01-10 07:10:08,498 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 8643 transitions. Word has length 68 [2022-01-10 07:10:08,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:08,498 INFO L470 AbstractCegarLoop]: Abstraction has 6238 states and 8643 transitions. [2022-01-10 07:10:08,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:08,499 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 8643 transitions. [2022-01-10 07:10:08,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 07:10:08,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:08,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:08,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:08,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:08,710 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:08,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:08,711 INFO L85 PathProgramCache]: Analyzing trace with hash -69166531, now seen corresponding path program 1 times [2022-01-10 07:10:08,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:08,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740145114] [2022-01-10 07:10:08,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:08,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:08,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:08,712 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:08,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:10:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:08,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:08,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:09,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:09,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:09,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:09,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740145114] [2022-01-10 07:10:09,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740145114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:09,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:09,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:09,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294261180] [2022-01-10 07:10:09,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:09,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:09,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:09,161 INFO L87 Difference]: Start difference. First operand 6238 states and 8643 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:09,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:09,727 INFO L93 Difference]: Finished difference Result 11294 states and 15831 transitions. [2022-01-10 07:10:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:09,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 07:10:09,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:09,736 INFO L225 Difference]: With dead ends: 11294 [2022-01-10 07:10:09,736 INFO L226 Difference]: Without dead ends: 6218 [2022-01-10 07:10:09,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:09,743 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 24 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 265 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:09,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1966 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 487 Invalid, 0 Unknown, 265 Unchecked, 0.3s Time] [2022-01-10 07:10:09,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2022-01-10 07:10:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 6218. [2022-01-10 07:10:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6218 states, 6211 states have (on average 1.3875382386089197) internal successors, (8618), 6217 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 8618 transitions. [2022-01-10 07:10:10,070 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 8618 transitions. Word has length 68 [2022-01-10 07:10:10,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:10,070 INFO L470 AbstractCegarLoop]: Abstraction has 6218 states and 8618 transitions. [2022-01-10 07:10:10,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:10,070 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 8618 transitions. [2022-01-10 07:10:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:10,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:10,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:10,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:10,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:10,282 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:10,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:10,283 INFO L85 PathProgramCache]: Analyzing trace with hash 43383936, now seen corresponding path program 1 times [2022-01-10 07:10:10,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:10,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735387025] [2022-01-10 07:10:10,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:10,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:10,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:10,284 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:10,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:10:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:10,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:10:10,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:10,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:10,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:10,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:10,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735387025] [2022-01-10 07:10:10,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735387025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:10,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:10,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:10:10,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726208375] [2022-01-10 07:10:10,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:10,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:10:10,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:10,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:10:10,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:10:10,821 INFO L87 Difference]: Start difference. First operand 6218 states and 8618 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:11,253 INFO L93 Difference]: Finished difference Result 8064 states and 11234 transitions. [2022-01-10 07:10:11,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:10:11,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 07:10:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:11,261 INFO L225 Difference]: With dead ends: 8064 [2022-01-10 07:10:11,261 INFO L226 Difference]: Without dead ends: 6182 [2022-01-10 07:10:11,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:11,264 INFO L933 BasicCegarLoop]: 689 mSDtfsCounter, 38 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:11,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1240 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 0 Unknown, 30 Unchecked, 0.2s Time] [2022-01-10 07:10:11,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6182 states. [2022-01-10 07:10:11,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6182 to 6182. [2022-01-10 07:10:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 6175 states have (on average 1.3875303643724697) internal successors, (8568), 6181 states have internal predecessors, (8568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:11,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 8568 transitions. [2022-01-10 07:10:11,566 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 8568 transitions. Word has length 69 [2022-01-10 07:10:11,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:11,566 INFO L470 AbstractCegarLoop]: Abstraction has 6182 states and 8568 transitions. [2022-01-10 07:10:11,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:11,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 8568 transitions. [2022-01-10 07:10:11,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:11,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:11,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:11,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:11,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:11,772 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 530036588, now seen corresponding path program 1 times [2022-01-10 07:10:11,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:11,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736109378] [2022-01-10 07:10:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:11,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:11,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:11,774 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:11,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:10:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:11,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:10:11,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:12,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:12,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:12,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736109378] [2022-01-10 07:10:12,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736109378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:12,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:12,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:10:12,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12563858] [2022-01-10 07:10:12,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:12,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:10:12,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:12,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:10:12,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:12,151 INFO L87 Difference]: Start difference. First operand 6182 states and 8568 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:13,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:13,920 INFO L93 Difference]: Finished difference Result 24524 states and 34437 transitions. [2022-01-10 07:10:13,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 07:10:13,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 07:10:13,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:13,948 INFO L225 Difference]: With dead ends: 24524 [2022-01-10 07:10:13,948 INFO L226 Difference]: Without dead ends: 20726 [2022-01-10 07:10:13,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:10:13,957 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 2331 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2331 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:13,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2331 Valid, 1398 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:10:13,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20726 states. [2022-01-10 07:10:14,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20726 to 6270. [2022-01-10 07:10:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6270 states, 6263 states have (on average 1.3763372185853424) internal successors, (8620), 6269 states have internal predecessors, (8620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6270 states to 6270 states and 8620 transitions. [2022-01-10 07:10:14,422 INFO L78 Accepts]: Start accepts. Automaton has 6270 states and 8620 transitions. Word has length 69 [2022-01-10 07:10:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:14,422 INFO L470 AbstractCegarLoop]: Abstraction has 6270 states and 8620 transitions. [2022-01-10 07:10:14,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 6270 states and 8620 transitions. [2022-01-10 07:10:14,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:14,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:14,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:14,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-01-10 07:10:14,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:14,633 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:14,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:14,634 INFO L85 PathProgramCache]: Analyzing trace with hash 80806030, now seen corresponding path program 1 times [2022-01-10 07:10:14,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:14,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188937942] [2022-01-10 07:10:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:14,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:14,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:14,636 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:14,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:10:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:14,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:14,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:15,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:15,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:15,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188937942] [2022-01-10 07:10:15,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188937942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:15,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:15,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:10:15,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040272072] [2022-01-10 07:10:15,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:15,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:10:15,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:15,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:10:15,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:15,446 INFO L87 Difference]: Start difference. First operand 6270 states and 8620 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:16,086 INFO L93 Difference]: Finished difference Result 8116 states and 11205 transitions. [2022-01-10 07:10:16,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:10:16,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 07:10:16,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:16,093 INFO L225 Difference]: With dead ends: 8116 [2022-01-10 07:10:16,093 INFO L226 Difference]: Without dead ends: 6237 [2022-01-10 07:10:16,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:16,096 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 42 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:16,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 2090 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 459 Invalid, 0 Unknown, 271 Unchecked, 0.3s Time] [2022-01-10 07:10:16,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2022-01-10 07:10:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 6237. [2022-01-10 07:10:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6237 states, 6230 states have (on average 1.3754414125200642) internal successors, (8569), 6236 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6237 states to 6237 states and 8569 transitions. [2022-01-10 07:10:16,436 INFO L78 Accepts]: Start accepts. Automaton has 6237 states and 8569 transitions. Word has length 69 [2022-01-10 07:10:16,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:16,436 INFO L470 AbstractCegarLoop]: Abstraction has 6237 states and 8569 transitions. [2022-01-10 07:10:16,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:16,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6237 states and 8569 transitions. [2022-01-10 07:10:16,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:16,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:16,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:16,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:16,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:16,640 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:16,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:16,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1560265185, now seen corresponding path program 1 times [2022-01-10 07:10:16,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:16,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39219526] [2022-01-10 07:10:16,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:16,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:16,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:16,642 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:16,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:10:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:16,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:16,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:17,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:17,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:17,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:17,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39219526] [2022-01-10 07:10:17,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39219526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:17,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:17,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:10:17,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532430756] [2022-01-10 07:10:17,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:17,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:10:17,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:17,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:10:17,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:17,391 INFO L87 Difference]: Start difference. First operand 6237 states and 8569 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:17,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:17,993 INFO L93 Difference]: Finished difference Result 8165 states and 11269 transitions. [2022-01-10 07:10:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:10:17,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 07:10:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:18,000 INFO L225 Difference]: With dead ends: 8165 [2022-01-10 07:10:18,000 INFO L226 Difference]: Without dead ends: 6288 [2022-01-10 07:10:18,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:18,003 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 99 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:18,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 1739 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 457 Invalid, 0 Unknown, 128 Unchecked, 0.3s Time] [2022-01-10 07:10:18,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6288 states. [2022-01-10 07:10:18,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6288 to 6239. [2022-01-10 07:10:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6239 states, 6232 states have (on average 1.3753209242618742) internal successors, (8571), 6238 states have internal predecessors, (8571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6239 states to 6239 states and 8571 transitions. [2022-01-10 07:10:18,340 INFO L78 Accepts]: Start accepts. Automaton has 6239 states and 8571 transitions. Word has length 69 [2022-01-10 07:10:18,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:18,340 INFO L470 AbstractCegarLoop]: Abstraction has 6239 states and 8571 transitions. [2022-01-10 07:10:18,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:18,340 INFO L276 IsEmpty]: Start isEmpty. Operand 6239 states and 8571 transitions. [2022-01-10 07:10:18,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:18,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:18,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:18,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:18,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:18,544 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:18,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:18,544 INFO L85 PathProgramCache]: Analyzing trace with hash 146781408, now seen corresponding path program 1 times [2022-01-10 07:10:18,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:18,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176346167] [2022-01-10 07:10:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:18,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:18,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:18,546 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:18,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:10:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:18,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:10:18,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:19,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:19,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:19,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176346167] [2022-01-10 07:10:19,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176346167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:19,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:19,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 07:10:19,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662026452] [2022-01-10 07:10:19,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:19,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:10:19,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:19,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:10:19,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:10:19,092 INFO L87 Difference]: Start difference. First operand 6239 states and 8571 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:19,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:19,702 INFO L93 Difference]: Finished difference Result 8193 states and 11300 transitions. [2022-01-10 07:10:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 07:10:19,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 07:10:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:19,709 INFO L225 Difference]: With dead ends: 8193 [2022-01-10 07:10:19,709 INFO L226 Difference]: Without dead ends: 6239 [2022-01-10 07:10:19,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:19,712 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 35 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 485 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:19,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2446 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 493 Invalid, 0 Unknown, 485 Unchecked, 0.3s Time] [2022-01-10 07:10:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6239 states. [2022-01-10 07:10:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6239 to 6239. [2022-01-10 07:10:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6239 states, 6232 states have (on average 1.375160462130937) internal successors, (8570), 6238 states have internal predecessors, (8570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:20,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6239 states to 6239 states and 8570 transitions. [2022-01-10 07:10:20,055 INFO L78 Accepts]: Start accepts. Automaton has 6239 states and 8570 transitions. Word has length 69 [2022-01-10 07:10:20,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:20,056 INFO L470 AbstractCegarLoop]: Abstraction has 6239 states and 8570 transitions. [2022-01-10 07:10:20,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:20,056 INFO L276 IsEmpty]: Start isEmpty. Operand 6239 states and 8570 transitions. [2022-01-10 07:10:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:20,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:20,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:20,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 07:10:20,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:20,260 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:20,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash 912191322, now seen corresponding path program 1 times [2022-01-10 07:10:20,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:20,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064235378] [2022-01-10 07:10:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:20,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:20,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:20,261 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:20,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:10:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:20,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:10:20,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:20,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:20,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:20,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064235378] [2022-01-10 07:10:20,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064235378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:20,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:20,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:10:20,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255185692] [2022-01-10 07:10:20,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:20,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:10:20,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:20,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:10:20,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:10:20,702 INFO L87 Difference]: Start difference. First operand 6239 states and 8570 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:21,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:21,198 INFO L93 Difference]: Finished difference Result 10232 states and 14237 transitions. [2022-01-10 07:10:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:10:21,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 07:10:21,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:21,205 INFO L225 Difference]: With dead ends: 10232 [2022-01-10 07:10:21,205 INFO L226 Difference]: Without dead ends: 6232 [2022-01-10 07:10:21,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:10:21,209 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 35 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:21,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1145 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 23 Unchecked, 0.2s Time] [2022-01-10 07:10:21,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6232 states. [2022-01-10 07:10:21,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6232 to 6232. [2022-01-10 07:10:21,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 6225 states have (on average 1.375421686746988) internal successors, (8562), 6231 states have internal predecessors, (8562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:21,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 8562 transitions. [2022-01-10 07:10:21,572 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 8562 transitions. Word has length 69 [2022-01-10 07:10:21,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:21,572 INFO L470 AbstractCegarLoop]: Abstraction has 6232 states and 8562 transitions. [2022-01-10 07:10:21,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:21,572 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 8562 transitions. [2022-01-10 07:10:21,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 07:10:21,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:21,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:21,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-01-10 07:10:21,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:21,777 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:21,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:21,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1474423363, now seen corresponding path program 1 times [2022-01-10 07:10:21,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:21,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008131141] [2022-01-10 07:10:21,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:21,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:21,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:21,778 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:21,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:10:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:21,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:21,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:22,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:22,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:22,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008131141] [2022-01-10 07:10:22,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008131141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:22,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:22,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:10:22,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357657588] [2022-01-10 07:10:22,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:22,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:10:22,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:22,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:10:22,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:22,503 INFO L87 Difference]: Start difference. First operand 6232 states and 8562 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:22,988 INFO L93 Difference]: Finished difference Result 8151 states and 11253 transitions. [2022-01-10 07:10:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:10:22,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 07:10:22,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:22,995 INFO L225 Difference]: With dead ends: 8151 [2022-01-10 07:10:22,996 INFO L226 Difference]: Without dead ends: 6288 [2022-01-10 07:10:22,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:22,999 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 82 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 363 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:22,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 1752 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 363 Unchecked, 0.2s Time] [2022-01-10 07:10:23,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6288 states. [2022-01-10 07:10:23,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6288 to 6245. [2022-01-10 07:10:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6245 states, 6238 states have (on average 1.3759217697980122) internal successors, (8583), 6244 states have internal predecessors, (8583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6245 states to 6245 states and 8583 transitions. [2022-01-10 07:10:23,424 INFO L78 Accepts]: Start accepts. Automaton has 6245 states and 8583 transitions. Word has length 69 [2022-01-10 07:10:23,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:23,424 INFO L470 AbstractCegarLoop]: Abstraction has 6245 states and 8583 transitions. [2022-01-10 07:10:23,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:23,424 INFO L276 IsEmpty]: Start isEmpty. Operand 6245 states and 8583 transitions. [2022-01-10 07:10:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:23,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:23,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:23,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:23,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:23,629 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:23,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:23,629 INFO L85 PathProgramCache]: Analyzing trace with hash -688548458, now seen corresponding path program 1 times [2022-01-10 07:10:23,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:23,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218422936] [2022-01-10 07:10:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:23,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:23,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:23,630 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:23,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 07:10:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:23,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 07:10:23,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:25,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:25,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:25,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218422936] [2022-01-10 07:10:25,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218422936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:25,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:25,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-10 07:10:25,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306114888] [2022-01-10 07:10:25,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:25,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 07:10:25,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 07:10:25,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-10 07:10:25,182 INFO L87 Difference]: Start difference. First operand 6245 states and 8583 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:25,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:25,714 INFO L93 Difference]: Finished difference Result 8087 states and 11168 transitions. [2022-01-10 07:10:25,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 07:10:25,715 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 07:10:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:25,721 INFO L225 Difference]: With dead ends: 8087 [2022-01-10 07:10:25,721 INFO L226 Difference]: Without dead ends: 6251 [2022-01-10 07:10:25,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-01-10 07:10:25,723 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 53 mSDsluCounter, 4435 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 5125 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 973 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:25,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 5125 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 973 Unchecked, 0.2s Time] [2022-01-10 07:10:25,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2022-01-10 07:10:26,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 6251. [2022-01-10 07:10:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6251 states, 6244 states have (on average 1.376040999359385) internal successors, (8592), 6250 states have internal predecessors, (8592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:26,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6251 states to 6251 states and 8592 transitions. [2022-01-10 07:10:26,062 INFO L78 Accepts]: Start accepts. Automaton has 6251 states and 8592 transitions. Word has length 70 [2022-01-10 07:10:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:26,063 INFO L470 AbstractCegarLoop]: Abstraction has 6251 states and 8592 transitions. [2022-01-10 07:10:26,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 6251 states and 8592 transitions. [2022-01-10 07:10:26,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:26,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:26,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:26,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:26,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:26,267 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:26,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:26,267 INFO L85 PathProgramCache]: Analyzing trace with hash -391371757, now seen corresponding path program 1 times [2022-01-10 07:10:26,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:26,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573647089] [2022-01-10 07:10:26,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:26,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:26,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:26,269 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:26,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 07:10:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:26,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:26,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:26,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:26,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:26,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573647089] [2022-01-10 07:10:26,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573647089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:26,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:26,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:26,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068466941] [2022-01-10 07:10:26,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:26,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:26,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:26,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:26,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:26,566 INFO L87 Difference]: Start difference. First operand 6251 states and 8592 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:27,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:27,219 INFO L93 Difference]: Finished difference Result 13198 states and 18190 transitions. [2022-01-10 07:10:27,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:27,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 07:10:27,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:27,232 INFO L225 Difference]: With dead ends: 13198 [2022-01-10 07:10:27,232 INFO L226 Difference]: Without dead ends: 10384 [2022-01-10 07:10:27,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:27,237 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 530 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:27,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 768 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:10:27,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10384 states. [2022-01-10 07:10:27,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10384 to 10344. [2022-01-10 07:10:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10344 states, 10337 states have (on average 1.3851214085324561) internal successors, (14318), 10343 states have internal predecessors, (14318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10344 states to 10344 states and 14318 transitions. [2022-01-10 07:10:27,891 INFO L78 Accepts]: Start accepts. Automaton has 10344 states and 14318 transitions. Word has length 70 [2022-01-10 07:10:27,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:27,891 INFO L470 AbstractCegarLoop]: Abstraction has 10344 states and 14318 transitions. [2022-01-10 07:10:27,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:27,891 INFO L276 IsEmpty]: Start isEmpty. Operand 10344 states and 14318 transitions. [2022-01-10 07:10:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:27,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:27,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:27,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:28,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:28,096 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:28,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:28,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1888316168, now seen corresponding path program 1 times [2022-01-10 07:10:28,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:28,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893963928] [2022-01-10 07:10:28,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:28,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:28,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:28,098 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:28,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 07:10:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:28,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:28,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:28,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:28,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:28,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893963928] [2022-01-10 07:10:28,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893963928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:28,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:28,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:28,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346562984] [2022-01-10 07:10:28,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:28,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:28,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:28,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:28,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:28,392 INFO L87 Difference]: Start difference. First operand 10344 states and 14318 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:29,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:29,587 INFO L93 Difference]: Finished difference Result 22130 states and 30712 transitions. [2022-01-10 07:10:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:29,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 07:10:29,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:29,606 INFO L225 Difference]: With dead ends: 22130 [2022-01-10 07:10:29,607 INFO L226 Difference]: Without dead ends: 17284 [2022-01-10 07:10:29,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:29,613 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 462 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:29,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 645 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:10:29,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17284 states. [2022-01-10 07:10:30,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17284 to 17212. [2022-01-10 07:10:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17212 states, 17205 states have (on average 1.3947108398721302) internal successors, (23996), 17211 states have internal predecessors, (23996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17212 states to 17212 states and 23996 transitions. [2022-01-10 07:10:30,863 INFO L78 Accepts]: Start accepts. Automaton has 17212 states and 23996 transitions. Word has length 70 [2022-01-10 07:10:30,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:30,864 INFO L470 AbstractCegarLoop]: Abstraction has 17212 states and 23996 transitions. [2022-01-10 07:10:30,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:30,864 INFO L276 IsEmpty]: Start isEmpty. Operand 17212 states and 23996 transitions. [2022-01-10 07:10:30,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:30,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:30,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:30,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 07:10:31,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:31,069 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:31,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1142484158, now seen corresponding path program 1 times [2022-01-10 07:10:31,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:31,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334572236] [2022-01-10 07:10:31,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:31,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:31,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:31,071 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:31,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 07:10:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:31,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 07:10:31,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:32,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:32,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:32,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334572236] [2022-01-10 07:10:32,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334572236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:32,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:32,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 07:10:32,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637280266] [2022-01-10 07:10:32,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:32,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 07:10:32,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:32,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 07:10:32,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-01-10 07:10:32,312 INFO L87 Difference]: Start difference. First operand 17212 states and 23996 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:33,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:33,567 INFO L93 Difference]: Finished difference Result 24293 states and 33921 transitions. [2022-01-10 07:10:33,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 07:10:33,568 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 07:10:33,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:33,587 INFO L225 Difference]: With dead ends: 24293 [2022-01-10 07:10:33,587 INFO L226 Difference]: Without dead ends: 17246 [2022-01-10 07:10:33,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-01-10 07:10:33,596 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 144 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 300 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:33,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 2301 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 300 Unchecked, 0.1s Time] [2022-01-10 07:10:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17246 states. [2022-01-10 07:10:34,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17246 to 17209. [2022-01-10 07:10:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17209 states, 17202 states have (on average 1.3947215440065108) internal successors, (23992), 17208 states have internal predecessors, (23992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17209 states to 17209 states and 23992 transitions. [2022-01-10 07:10:34,807 INFO L78 Accepts]: Start accepts. Automaton has 17209 states and 23992 transitions. Word has length 70 [2022-01-10 07:10:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:34,807 INFO L470 AbstractCegarLoop]: Abstraction has 17209 states and 23992 transitions. [2022-01-10 07:10:34,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:34,807 INFO L276 IsEmpty]: Start isEmpty. Operand 17209 states and 23992 transitions. [2022-01-10 07:10:34,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:34,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:34,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:34,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-01-10 07:10:35,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:35,012 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:35,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1056904861, now seen corresponding path program 1 times [2022-01-10 07:10:35,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:35,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350813742] [2022-01-10 07:10:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:35,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:35,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:35,014 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:35,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 07:10:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:35,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 07:10:35,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:36,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:36,310 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:36,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350813742] [2022-01-10 07:10:36,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350813742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:36,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:36,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 07:10:36,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861638354] [2022-01-10 07:10:36,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:36,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 07:10:36,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:36,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 07:10:36,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-01-10 07:10:36,312 INFO L87 Difference]: Start difference. First operand 17209 states and 23992 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:37,666 INFO L93 Difference]: Finished difference Result 24204 states and 33812 transitions. [2022-01-10 07:10:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 07:10:37,666 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 07:10:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:37,686 INFO L225 Difference]: With dead ends: 24204 [2022-01-10 07:10:37,686 INFO L226 Difference]: Without dead ends: 17171 [2022-01-10 07:10:37,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-10 07:10:37,695 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 56 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 220 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:37,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 3237 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 220 Unchecked, 0.1s Time] [2022-01-10 07:10:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17171 states. [2022-01-10 07:10:38,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17171 to 17171. [2022-01-10 07:10:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17171 states, 17164 states have (on average 1.3951876019575857) internal successors, (23947), 17170 states have internal predecessors, (23947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:38,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17171 states to 17171 states and 23947 transitions. [2022-01-10 07:10:38,910 INFO L78 Accepts]: Start accepts. Automaton has 17171 states and 23947 transitions. Word has length 70 [2022-01-10 07:10:38,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:38,910 INFO L470 AbstractCegarLoop]: Abstraction has 17171 states and 23947 transitions. [2022-01-10 07:10:38,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:38,910 INFO L276 IsEmpty]: Start isEmpty. Operand 17171 states and 23947 transitions. [2022-01-10 07:10:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:38,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:38,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:38,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-01-10 07:10:39,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:39,115 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:39,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:39,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1346201798, now seen corresponding path program 1 times [2022-01-10 07:10:39,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:39,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852496054] [2022-01-10 07:10:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:39,116 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:39,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:39,117 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:39,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 07:10:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:39,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:10:39,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:39,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:39,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:39,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:39,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852496054] [2022-01-10 07:10:39,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852496054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:39,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:39,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:10:39,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815549904] [2022-01-10 07:10:39,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:39,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:10:39,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:39,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:10:39,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:39,409 INFO L87 Difference]: Start difference. First operand 17171 states and 23947 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:40,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:40,578 INFO L93 Difference]: Finished difference Result 24275 states and 33887 transitions. [2022-01-10 07:10:40,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:10:40,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 07:10:40,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:40,600 INFO L225 Difference]: With dead ends: 24275 [2022-01-10 07:10:40,600 INFO L226 Difference]: Without dead ends: 16748 [2022-01-10 07:10:40,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:10:40,611 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 401 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:40,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 903 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:10:40,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16748 states. [2022-01-10 07:10:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16748 to 12471. [2022-01-10 07:10:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12471 states, 12464 states have (on average 1.3810975609756098) internal successors, (17214), 12470 states have internal predecessors, (17214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12471 states to 12471 states and 17214 transitions. [2022-01-10 07:10:41,849 INFO L78 Accepts]: Start accepts. Automaton has 12471 states and 17214 transitions. Word has length 70 [2022-01-10 07:10:41,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:10:41,849 INFO L470 AbstractCegarLoop]: Abstraction has 12471 states and 17214 transitions. [2022-01-10 07:10:41,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 12471 states and 17214 transitions. [2022-01-10 07:10:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 07:10:41,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:10:41,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:10:41,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-01-10 07:10:42,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:10:42,053 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-01-10 07:10:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:10:42,053 INFO L85 PathProgramCache]: Analyzing trace with hash -765240281, now seen corresponding path program 1 times [2022-01-10 07:10:42,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:10:42,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605705105] [2022-01-10 07:10:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:10:42,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:10:42,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:10:42,055 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:10:42,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 07:10:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:10:42,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:10:42,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:10:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:10:42,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:10:42,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:10:42,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605705105] [2022-01-10 07:10:42,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605705105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:10:42,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:10:42,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 07:10:42,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830205541] [2022-01-10 07:10:42,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:10:42,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 07:10:42,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:10:42,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 07:10:42,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 07:10:42,889 INFO L87 Difference]: Start difference. First operand 12471 states and 17214 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 07:10:44,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:10:44,318 INFO L93 Difference]: Finished difference Result 18073 states and 25081 transitions. [2022-01-10 07:10:44,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 07:10:44,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 07:10:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:10:44,335 INFO L225 Difference]: With dead ends: 18073 [2022-01-10 07:10:44,335 INFO L226 Difference]: Without dead ends: 14277 [2022-01-10 07:10:44,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-10 07:10:44,341 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 321 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 302 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:10:44,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 1373 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 302 Unchecked, 0.1s Time] [2022-01-10 07:10:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14277 states.