/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-pthread/cs_lazy.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:26:39,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:26:39,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:26:39,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:26:39,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:26:39,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:26:39,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:26:39,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:26:39,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:26:39,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:26:39,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:26:39,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:26:39,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:26:39,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:26:39,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:26:39,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:26:39,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:26:39,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:26:39,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:26:39,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:26:39,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:26:39,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:26:39,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:26:39,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:26:39,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 07:26:39,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 07:26:39,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 07:26:39,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 07:26:39,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 07:26:39,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 07:26:39,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:26:39,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:26:39,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:26:39,828 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 07:26:39,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:26:39,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:26:39,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:26:39,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:26:39,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:26:39,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:26:39,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:26:39,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:26:39,848 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:26:39,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:26:39,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:26:39,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:26:39,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:26:39,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:26:39,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:26:39,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:26:39,849 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:26:39,849 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:26:39,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:26:39,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:26:39,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:26:39,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:26:39,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:26:39,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:26:39,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:26:39,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:26:39,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:26:39,850 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:26:39,850 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:26:39,850 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:26:39,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:26:39,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:26:39,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:26:39,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:26:40,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:26:40,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:26:40,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:26:40,188 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:26:40,191 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:26:40,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_lazy.i [2022-01-10 07:26:40,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273530aec/99d0edbae46a43c589abbe68924af2cf/FLAGc09c826d5 [2022-01-10 07:26:40,622 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:26:40,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_lazy.i [2022-01-10 07:26:40,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273530aec/99d0edbae46a43c589abbe68924af2cf/FLAGc09c826d5 [2022-01-10 07:26:41,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273530aec/99d0edbae46a43c589abbe68924af2cf [2022-01-10 07:26:41,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:26:41,036 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:26:41,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:26:41,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:26:41,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:26:41,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:26:41" (1/1) ... [2022-01-10 07:26:41,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6bb6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41, skipping insertion in model container [2022-01-10 07:26:41,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:26:41" (1/1) ... [2022-01-10 07:26:41,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:26:41,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:26:41,390 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-pthread/cs_lazy.i[23394,23407] [2022-01-10 07:26:41,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:26:41,497 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:26:41,528 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-pthread/cs_lazy.i[23394,23407] [2022-01-10 07:26:41,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:26:41,600 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:26:41,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41 WrapperNode [2022-01-10 07:26:41,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:26:41,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:26:41,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:26:41,602 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:26:41,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41" (1/1) ... [2022-01-10 07:26:41,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41" (1/1) ... [2022-01-10 07:26:41,674 INFO L137 Inliner]: procedures = 149, calls = 212, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 501 [2022-01-10 07:26:41,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:26:41,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:26:41,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:26:41,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:26:41,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41" (1/1) ... [2022-01-10 07:26:41,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41" (1/1) ... [2022-01-10 07:26:41,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41" (1/1) ... [2022-01-10 07:26:41,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41" (1/1) ... [2022-01-10 07:26:41,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41" (1/1) ... [2022-01-10 07:26:41,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41" (1/1) ... [2022-01-10 07:26:41,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41" (1/1) ... [2022-01-10 07:26:41,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:26:41,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:26:41,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:26:41,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:26:41,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41" (1/1) ... [2022-01-10 07:26:41,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:26:41,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:26:41,798 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 07:26:41,812 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 07:26:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-01-10 07:26:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 07:26:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:26:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 07:26:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 07:26:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-01-10 07:26:41,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-01-10 07:26:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-01-10 07:26:41,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-01-10 07:26:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 07:26:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-01-10 07:26:41,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-01-10 07:26:41,841 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-01-10 07:26:41,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-01-10 07:26:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-01-10 07:26:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 07:26:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 07:26:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 07:26:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:26:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 07:26:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-01-10 07:26:41,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-01-10 07:26:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-01-10 07:26:41,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-01-10 07:26:41,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:26:41,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:26:41,964 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:26:41,965 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:26:42,261 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);thread3_#res#1.base, thread3_#res#1.offset := 0bv64, 0bv64; [2022-01-10 07:26:42,261 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:26:42,262 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);thread3_#res#1.base, thread3_#res#1.offset := 0bv64, 0bv64; [2022-01-10 07:26:42,262 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:26:42,262 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L714: SUMMARY for call __CS_cs(); srcloc: null [2022-01-10 07:26:42,262 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L714-1: assume 0bv32 != ~zero_extendFrom8To32(~__CS_ret~0);thread3_#res#1.base, thread3_#res#1.offset := 0bv64, 0bv64; [2022-01-10 07:26:42,262 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L714-1: assume !(0bv32 != ~zero_extendFrom8To32(~__CS_ret~0)); [2022-01-10 07:26:44,779 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:26:44,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:26:44,792 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 07:26:44,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:26:44 BoogieIcfgContainer [2022-01-10 07:26:44,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:26:44,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:26:44,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:26:44,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:26:44,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:26:41" (1/3) ... [2022-01-10 07:26:44,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c58f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:26:44, skipping insertion in model container [2022-01-10 07:26:44,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:26:41" (2/3) ... [2022-01-10 07:26:44,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c58f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:26:44, skipping insertion in model container [2022-01-10 07:26:44,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:26:44" (3/3) ... [2022-01-10 07:26:44,800 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_lazy.i [2022-01-10 07:26:44,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:26:44,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 07:26:44,850 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:26:44,855 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 07:26:44,855 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 07:26:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 119 states have (on average 1.495798319327731) internal successors, (178), 120 states have internal predecessors, (178), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-10 07:26:44,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 07:26:44,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:26:44,888 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] [2022-01-10 07:26:44,889 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:26:44,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:26:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1643557001, now seen corresponding path program 1 times [2022-01-10 07:26:44,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:26:44,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345614540] [2022-01-10 07:26:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:26:44,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:26:44,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:26:44,906 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 07:26:44,908 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 07:26:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:26:45,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 07:26:45,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:26:45,455 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 07:26:45,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:26:45,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:26:45,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345614540] [2022-01-10 07:26:45,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345614540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:26:45,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:26:45,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:26:45,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112894691] [2022-01-10 07:26:45,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:26:45,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 07:26:45,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:26:45,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 07:26:45,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 07:26:45,487 INFO L87 Difference]: Start difference. First operand has 164 states, 119 states have (on average 1.495798319327731) internal successors, (178), 120 states have internal predecessors, (178), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 07:26:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:26:45,535 INFO L93 Difference]: Finished difference Result 326 states and 530 transitions. [2022-01-10 07:26:45,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 07:26:45,537 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2022-01-10 07:26:45,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:26:45,547 INFO L225 Difference]: With dead ends: 326 [2022-01-10 07:26:45,547 INFO L226 Difference]: Without dead ends: 160 [2022-01-10 07:26:45,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 07:26:45,558 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:26:45,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:26:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-10 07:26:45,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-01-10 07:26:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 116 states have (on average 1.3706896551724137) internal successors, (159), 116 states have internal predecessors, (159), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-10 07:26:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 233 transitions. [2022-01-10 07:26:45,610 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 233 transitions. Word has length 34 [2022-01-10 07:26:45,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:26:45,610 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 233 transitions. [2022-01-10 07:26:45,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 07:26:45,610 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 233 transitions. [2022-01-10 07:26:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 07:26:45,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:26:45,616 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] [2022-01-10 07:26:45,633 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 07:26:45,830 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 07:26:45,831 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:26:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:26:45,832 INFO L85 PathProgramCache]: Analyzing trace with hash 819536951, now seen corresponding path program 1 times [2022-01-10 07:26:45,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:26:45,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155608553] [2022-01-10 07:26:45,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:26:45,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:26:45,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:26:45,839 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 07:26:45,840 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 07:26:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:26:46,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:26:46,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:26:46,273 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 07:26:46,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:26:46,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:26:46,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155608553] [2022-01-10 07:26:46,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155608553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:26:46,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:26:46,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:26:46,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234091977] [2022-01-10 07:26:46,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:26:46,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:26:46,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:26:46,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:26:46,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:26:46,277 INFO L87 Difference]: Start difference. First operand 160 states and 233 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 07:26:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:26:46,368 INFO L93 Difference]: Finished difference Result 318 states and 464 transitions. [2022-01-10 07:26:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:26:46,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2022-01-10 07:26:46,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:26:46,373 INFO L225 Difference]: With dead ends: 318 [2022-01-10 07:26:46,373 INFO L226 Difference]: Without dead ends: 165 [2022-01-10 07:26:46,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 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 07:26:46,375 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 5 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:26:46,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 456 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:26:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-01-10 07:26:46,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2022-01-10 07:26:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 117 states have (on average 1.3675213675213675) internal successors, (160), 117 states have internal predecessors, (160), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-10 07:26:46,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 234 transitions. [2022-01-10 07:26:46,392 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 234 transitions. Word has length 34 [2022-01-10 07:26:46,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:26:46,393 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 234 transitions. [2022-01-10 07:26:46,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 07:26:46,393 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 234 transitions. [2022-01-10 07:26:46,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 07:26:46,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:26:46,394 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] [2022-01-10 07:26:46,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 07:26:46,608 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 07:26:46,608 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:26:46,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:26:46,609 INFO L85 PathProgramCache]: Analyzing trace with hash -883018881, now seen corresponding path program 1 times [2022-01-10 07:26:46,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:26:46,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488142254] [2022-01-10 07:26:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:26:46,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:26:46,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:26:46,611 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 07:26:46,613 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 07:26:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:26:46,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:26:46,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:26:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:26:47,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:26:47,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:26:47,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488142254] [2022-01-10 07:26:47,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488142254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:26:47,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:26:47,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:26:47,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662381013] [2022-01-10 07:26:47,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:26:47,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:26:47,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:26:47,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:26:47,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:26:47,057 INFO L87 Difference]: Start difference. First operand 161 states and 234 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 07:26:47,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:26:47,147 INFO L93 Difference]: Finished difference Result 321 states and 468 transitions. [2022-01-10 07:26:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:26:47,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2022-01-10 07:26:47,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:26:47,156 INFO L225 Difference]: With dead ends: 321 [2022-01-10 07:26:47,156 INFO L226 Difference]: Without dead ends: 163 [2022-01-10 07:26:47,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 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 07:26:47,160 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:26:47,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 459 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:26:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-01-10 07:26:47,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2022-01-10 07:26:47,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 118 states have (on average 1.3644067796610169) internal successors, (161), 118 states have internal predecessors, (161), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-10 07:26:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 235 transitions. [2022-01-10 07:26:47,176 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 235 transitions. Word has length 38 [2022-01-10 07:26:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:26:47,176 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 235 transitions. [2022-01-10 07:26:47,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 07:26:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 235 transitions. [2022-01-10 07:26:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 07:26:47,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:26:47,177 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] [2022-01-10 07:26:47,201 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 07:26:47,392 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 07:26:47,392 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:26:47,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:26:47,395 INFO L85 PathProgramCache]: Analyzing trace with hash -786448707, now seen corresponding path program 1 times [2022-01-10 07:26:47,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:26:47,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435853486] [2022-01-10 07:26:47,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:26:47,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:26:47,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:26:47,397 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 07:26:47,436 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 07:26:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:26:47,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:26:47,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:26:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:26:47,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:26:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:26:47,976 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:26:47,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435853486] [2022-01-10 07:26:47,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435853486] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:26:47,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:26:47,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 07:26:47,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356464356] [2022-01-10 07:26:47,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:26:47,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:26:47,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:26:47,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:26:47,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:26:47,977 INFO L87 Difference]: Start difference. First operand 162 states and 235 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 07:26:48,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:26:48,117 INFO L93 Difference]: Finished difference Result 327 states and 476 transitions. [2022-01-10 07:26:48,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:26:48,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 40 [2022-01-10 07:26:48,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:26:48,121 INFO L225 Difference]: With dead ends: 327 [2022-01-10 07:26:48,121 INFO L226 Difference]: Without dead ends: 168 [2022-01-10 07:26:48,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:26:48,122 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 4 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:26:48,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1143 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:26:48,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-01-10 07:26:48,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-01-10 07:26:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.346774193548387) internal successors, (167), 124 states have internal predecessors, (167), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-10 07:26:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 241 transitions. [2022-01-10 07:26:48,130 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 241 transitions. Word has length 40 [2022-01-10 07:26:48,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:26:48,130 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 241 transitions. [2022-01-10 07:26:48,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 07:26:48,130 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 241 transitions. [2022-01-10 07:26:48,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 07:26:48,131 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:26:48,132 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:26:48,148 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 07:26:48,344 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 07:26:48,345 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:26:48,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:26:48,345 INFO L85 PathProgramCache]: Analyzing trace with hash 386454391, now seen corresponding path program 2 times [2022-01-10 07:26:48,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:26:48,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783868940] [2022-01-10 07:26:48,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 07:26:48,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:26:48,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:26:48,348 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 07:26:48,350 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 07:26:48,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 07:26:48,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 07:26:48,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 07:26:48,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:26:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 07:26:48,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:26:48,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:26:48,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783868940] [2022-01-10 07:26:48,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783868940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:26:48,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:26:48,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:26:48,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248081157] [2022-01-10 07:26:48,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:26:48,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:26:48,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:26:48,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:26:48,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:26:48,881 INFO L87 Difference]: Start difference. First operand 168 states and 241 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 07:26:48,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:26:48,900 INFO L93 Difference]: Finished difference Result 316 states and 457 transitions. [2022-01-10 07:26:48,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:26:48,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 46 [2022-01-10 07:26:48,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:26:48,904 INFO L225 Difference]: With dead ends: 316 [2022-01-10 07:26:48,904 INFO L226 Difference]: Without dead ends: 168 [2022-01-10 07:26:48,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 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 07:26:48,906 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 0 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:26:48,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 460 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:26:48,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-01-10 07:26:48,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-01-10 07:26:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.3387096774193548) internal successors, (166), 124 states have internal predecessors, (166), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-10 07:26:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 240 transitions. [2022-01-10 07:26:48,921 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 240 transitions. Word has length 46 [2022-01-10 07:26:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:26:48,921 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 240 transitions. [2022-01-10 07:26:48,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 07:26:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 240 transitions. [2022-01-10 07:26:48,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 07:26:48,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:26:48,923 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:26:48,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:26:49,131 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 07:26:49,132 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:26:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:26:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1136086573, now seen corresponding path program 1 times [2022-01-10 07:26:49,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:26:49,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285524774] [2022-01-10 07:26:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:26:49,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:26:49,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:26:49,135 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 07:26:49,135 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 07:26:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:26:49,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 07:26:49,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:26:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 07:26:49,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:26:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 07:26:49,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:26:49,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285524774] [2022-01-10 07:26:49,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285524774] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:26:49,897 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:26:49,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 07:26:49,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632686482] [2022-01-10 07:26:49,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:26:49,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 07:26:49,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:26:49,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 07:26:49,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:26:49,898 INFO L87 Difference]: Start difference. First operand 168 states and 240 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-10 07:26:50,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:26:50,077 INFO L93 Difference]: Finished difference Result 344 states and 489 transitions. [2022-01-10 07:26:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:26:50,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2022-01-10 07:26:50,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:26:50,079 INFO L225 Difference]: With dead ends: 344 [2022-01-10 07:26:50,079 INFO L226 Difference]: Without dead ends: 191 [2022-01-10 07:26:50,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:26:50,080 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 14 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:26:50,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 1132 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:26:50,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-01-10 07:26:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 180. [2022-01-10 07:26:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 136 states have (on average 1.3161764705882353) internal successors, (179), 136 states have internal predecessors, (179), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-10 07:26:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 253 transitions. [2022-01-10 07:26:50,087 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 253 transitions. Word has length 64 [2022-01-10 07:26:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:26:50,088 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 253 transitions. [2022-01-10 07:26:50,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-10 07:26:50,088 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 253 transitions. [2022-01-10 07:26:50,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 07:26:50,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:26:50,090 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:26:50,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:26:50,319 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 07:26:50,320 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:26:50,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:26:50,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1095643411, now seen corresponding path program 2 times [2022-01-10 07:26:50,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:26:50,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045478875] [2022-01-10 07:26:50,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 07:26:50,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:26:50,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:26:50,322 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 07:26:50,323 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 07:26:50,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 07:26:50,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 07:26:50,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:26:50,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:26:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-01-10 07:26:50,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:26:50,976 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:26:50,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045478875] [2022-01-10 07:26:50,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045478875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:26:50,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:26:50,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:26:50,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096150017] [2022-01-10 07:26:50,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:26:50,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:26:50,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:26:50,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:26:50,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:26:50,978 INFO L87 Difference]: Start difference. First operand 180 states and 253 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 07:26:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:26:51,833 INFO L93 Difference]: Finished difference Result 361 states and 535 transitions. [2022-01-10 07:26:51,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:26:51,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2022-01-10 07:26:51,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:26:51,837 INFO L225 Difference]: With dead ends: 361 [2022-01-10 07:26:51,838 INFO L226 Difference]: Without dead ends: 335 [2022-01-10 07:26:51,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:26:51,839 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 303 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 07:26:51,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 699 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 07:26:51,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-01-10 07:26:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 334. [2022-01-10 07:26:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 237 states have (on average 1.3670886075949367) internal successors, (324), 236 states have internal predecessors, (324), 81 states have call successors, (81), 12 states have call predecessors, (81), 15 states have return successors, (101), 85 states have call predecessors, (101), 81 states have call successors, (101) [2022-01-10 07:26:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 506 transitions. [2022-01-10 07:26:51,884 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 506 transitions. Word has length 76 [2022-01-10 07:26:51,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:26:51,884 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 506 transitions. [2022-01-10 07:26:51,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-10 07:26:51,884 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 506 transitions. [2022-01-10 07:26:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 07:26:51,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:26:51,887 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:26:51,901 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 07:26:52,102 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 07:26:52,102 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:26:52,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:26:52,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1669023574, now seen corresponding path program 1 times [2022-01-10 07:26:52,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:26:52,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687303036] [2022-01-10 07:26:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:26:52,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:26:52,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:26:52,105 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 07:26:52,107 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 07:26:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:26:52,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:26:52,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:26:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-01-10 07:26:53,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:26:53,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:26:53,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687303036] [2022-01-10 07:26:53,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687303036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:26:53,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:26:53,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:26:53,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193097836] [2022-01-10 07:26:53,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:26:53,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:26:53,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:26:53,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:26:53,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:26:53,130 INFO L87 Difference]: Start difference. First operand 334 states and 506 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:26:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:26:53,841 INFO L93 Difference]: Finished difference Result 809 states and 1302 transitions. [2022-01-10 07:26:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:26:53,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 121 [2022-01-10 07:26:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:26:53,845 INFO L225 Difference]: With dead ends: 809 [2022-01-10 07:26:53,846 INFO L226 Difference]: Without dead ends: 505 [2022-01-10 07:26:53,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 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 07:26:53,854 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 306 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 07:26:53,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 495 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 07:26:53,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-01-10 07:26:53,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 467. [2022-01-10 07:26:53,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 347 states have (on average 1.2564841498559078) internal successors, (436), 298 states have internal predecessors, (436), 95 states have call successors, (95), 14 states have call predecessors, (95), 24 states have return successors, (190), 154 states have call predecessors, (190), 95 states have call successors, (190) [2022-01-10 07:26:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 721 transitions. [2022-01-10 07:26:53,906 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 721 transitions. Word has length 121 [2022-01-10 07:26:53,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:26:53,908 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 721 transitions. [2022-01-10 07:26:53,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:26:53,908 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 721 transitions. [2022-01-10 07:26:53,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 07:26:53,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:26:53,912 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:26:53,974 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 07:26:54,129 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 07:26:54,130 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:26:54,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:26:54,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1837039795, now seen corresponding path program 1 times [2022-01-10 07:26:54,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:26:54,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486223913] [2022-01-10 07:26:54,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:26:54,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:26:54,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:26:54,133 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 07:26:54,134 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 07:26:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:26:55,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:26:55,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:26:55,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-01-10 07:26:55,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-01-10 07:26:55,820 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 07:26:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-01-10 07:26:55,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:26:55,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-01-10 07:26:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-01-10 07:26:56,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:26:56,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486223913] [2022-01-10 07:26:56,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486223913] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:26:56,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:26:56,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 07:26:56,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061473261] [2022-01-10 07:26:56,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:26:56,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:26:56,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:26:56,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:26:56,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:26:56,217 INFO L87 Difference]: Start difference. First operand 467 states and 721 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-01-10 07:26:58,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 07:26:59,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:26:59,502 INFO L93 Difference]: Finished difference Result 1084 states and 1758 transitions. [2022-01-10 07:26:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 07:26:59,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 122 [2022-01-10 07:26:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:26:59,510 INFO L225 Difference]: With dead ends: 1084 [2022-01-10 07:26:59,510 INFO L226 Difference]: Without dead ends: 1056 [2022-01-10 07:26:59,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:26:59,514 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 711 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 389 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:26:59,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 633 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 317 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 07:26:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-01-10 07:26:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1004. [2022-01-10 07:26:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 719 states have (on average 1.262865090403338) internal successors, (908), 616 states have internal predecessors, (908), 224 states have call successors, (224), 28 states have call predecessors, (224), 60 states have return successors, (520), 359 states have call predecessors, (520), 224 states have call successors, (520) [2022-01-10 07:26:59,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1652 transitions. [2022-01-10 07:26:59,639 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1652 transitions. Word has length 122 [2022-01-10 07:26:59,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:26:59,640 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 1652 transitions. [2022-01-10 07:26:59,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-01-10 07:26:59,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1652 transitions. [2022-01-10 07:26:59,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 07:26:59,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:26:59,645 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:26:59,689 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 07:26:59,846 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 07:26:59,846 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:26:59,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:26:59,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2094798163, now seen corresponding path program 1 times [2022-01-10 07:26:59,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:26:59,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690468392] [2022-01-10 07:26:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:26:59,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:26:59,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:26:59,848 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 07:26:59,884 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 07:27:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:01,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:27:01,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:01,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-01-10 07:27:01,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-01-10 07:27:01,609 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 07:27:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-01-10 07:27:01,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:27:01,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-01-10 07:27:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-01-10 07:27:02,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:02,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690468392] [2022-01-10 07:27:02,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690468392] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:27:02,111 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:27:02,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 07:27:02,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138314133] [2022-01-10 07:27:02,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:27:02,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:27:02,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:02,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:27:02,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:27:02,112 INFO L87 Difference]: Start difference. First operand 1004 states and 1652 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-01-10 07:27:04,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 07:27:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:05,539 INFO L93 Difference]: Finished difference Result 1653 states and 2632 transitions. [2022-01-10 07:27:05,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 07:27:05,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 122 [2022-01-10 07:27:05,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:05,545 INFO L225 Difference]: With dead ends: 1653 [2022-01-10 07:27:05,545 INFO L226 Difference]: Without dead ends: 1056 [2022-01-10 07:27:05,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:27:05,549 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 395 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 186 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:05,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 750 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 430 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-01-10 07:27:05,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-01-10 07:27:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1010. [2022-01-10 07:27:05,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 723 states have (on average 1.2614107883817427) internal successors, (912), 622 states have internal predecessors, (912), 224 states have call successors, (224), 28 states have call predecessors, (224), 62 states have return successors, (518), 359 states have call predecessors, (518), 224 states have call successors, (518) [2022-01-10 07:27:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1654 transitions. [2022-01-10 07:27:05,589 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1654 transitions. Word has length 122 [2022-01-10 07:27:05,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:05,590 INFO L470 AbstractCegarLoop]: Abstraction has 1010 states and 1654 transitions. [2022-01-10 07:27:05,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-01-10 07:27:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1654 transitions. [2022-01-10 07:27:05,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 07:27:05,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:05,593 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:27:05,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 07:27:05,811 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 07:27:05,812 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:05,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:05,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1285087731, now seen corresponding path program 1 times [2022-01-10 07:27:05,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:05,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517353732] [2022-01-10 07:27:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:05,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:05,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:05,815 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 07:27:05,816 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 07:27:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:07,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:27:07,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:07,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-01-10 07:27:07,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-01-10 07:27:07,493 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 07:27:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-01-10 07:27:07,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:27:07,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-01-10 07:27:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-01-10 07:27:07,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:07,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517353732] [2022-01-10 07:27:07,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517353732] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:27:07,903 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:27:07,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 07:27:07,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894925732] [2022-01-10 07:27:07,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:27:07,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:27:07,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:07,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:27:07,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:27:07,904 INFO L87 Difference]: Start difference. First operand 1010 states and 1654 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-01-10 07:27:09,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 07:27:11,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:11,387 INFO L93 Difference]: Finished difference Result 1994 states and 3215 transitions. [2022-01-10 07:27:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 07:27:11,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 122 [2022-01-10 07:27:11,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:11,393 INFO L225 Difference]: With dead ends: 1994 [2022-01-10 07:27:11,393 INFO L226 Difference]: Without dead ends: 1026 [2022-01-10 07:27:11,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:27:11,397 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 453 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 249 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:11,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 887 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 445 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-01-10 07:27:11,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2022-01-10 07:27:11,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 980. [2022-01-10 07:27:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 703 states have (on average 1.2588904694167853) internal successors, (885), 605 states have internal predecessors, (885), 216 states have call successors, (216), 28 states have call predecessors, (216), 60 states have return successors, (495), 346 states have call predecessors, (495), 216 states have call successors, (495) [2022-01-10 07:27:11,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1596 transitions. [2022-01-10 07:27:11,434 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1596 transitions. Word has length 122 [2022-01-10 07:27:11,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:11,434 INFO L470 AbstractCegarLoop]: Abstraction has 980 states and 1596 transitions. [2022-01-10 07:27:11,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-01-10 07:27:11,435 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1596 transitions. [2022-01-10 07:27:11,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 07:27:11,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:11,437 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:27:11,457 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 07:27:11,657 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 07:27:11,658 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:11,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:11,658 INFO L85 PathProgramCache]: Analyzing trace with hash -892722353, now seen corresponding path program 1 times [2022-01-10 07:27:11,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:11,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768162463] [2022-01-10 07:27:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:11,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:11,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:11,672 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 07:27:11,673 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 07:27:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:12,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:27:12,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:12,427 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 07:27:12,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-10 07:27:12,454 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-01-10 07:27:12,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-01-10 07:27:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-01-10 07:27:12,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:27:12,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:12,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768162463] [2022-01-10 07:27:12,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768162463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:27:12,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:27:12,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:27:12,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410796287] [2022-01-10 07:27:12,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:27:12,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:27:12,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:27:12,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:27:12,647 INFO L87 Difference]: Start difference. First operand 980 states and 1596 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:27:13,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:13,407 INFO L93 Difference]: Finished difference Result 1980 states and 3213 transitions. [2022-01-10 07:27:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:27:13,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 104 [2022-01-10 07:27:13,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:13,418 INFO L225 Difference]: With dead ends: 1980 [2022-01-10 07:27:13,418 INFO L226 Difference]: Without dead ends: 1001 [2022-01-10 07:27:13,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:27:13,425 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 269 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:13,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 721 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 07:27:13,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-01-10 07:27:13,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 949. [2022-01-10 07:27:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 681 states have (on average 1.2555066079295154) internal successors, (855), 590 states have internal predecessors, (855), 207 states have call successors, (207), 28 states have call predecessors, (207), 60 states have return successors, (490), 330 states have call predecessors, (490), 207 states have call successors, (490) [2022-01-10 07:27:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1552 transitions. [2022-01-10 07:27:13,489 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1552 transitions. Word has length 104 [2022-01-10 07:27:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:13,489 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1552 transitions. [2022-01-10 07:27:13,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:27:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1552 transitions. [2022-01-10 07:27:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 07:27:13,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:13,492 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:27:13,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:27:13,716 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 07:27:13,716 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:13,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:13,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1964731096, now seen corresponding path program 1 times [2022-01-10 07:27:13,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:13,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329207194] [2022-01-10 07:27:13,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:13,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:13,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:13,728 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 07:27:13,730 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 07:27:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:15,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 07:27:15,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:15,250 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-01-10 07:27:15,373 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-01-10 07:27:15,578 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-10 07:27:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-01-10 07:27:15,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 07:27:15,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-01-10 07:27:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-01-10 07:27:16,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:16,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329207194] [2022-01-10 07:27:16,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329207194] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 07:27:16,048 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 07:27:16,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 07:27:16,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907608399] [2022-01-10 07:27:16,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 07:27:16,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 07:27:16,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:27:16,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 07:27:16,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:27:16,049 INFO L87 Difference]: Start difference. First operand 949 states and 1552 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-01-10 07:27:18,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 07:27:19,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:27:19,483 INFO L93 Difference]: Finished difference Result 1041 states and 1676 transitions. [2022-01-10 07:27:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 07:27:19,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 136 [2022-01-10 07:27:19,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:27:19,490 INFO L225 Difference]: With dead ends: 1041 [2022-01-10 07:27:19,490 INFO L226 Difference]: Without dead ends: 1013 [2022-01-10 07:27:19,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 07:27:19,491 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 409 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 216 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:27:19,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 804 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 415 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-01-10 07:27:19,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-01-10 07:27:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 961. [2022-01-10 07:27:19,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 689 states have (on average 1.2525399129172714) internal successors, (863), 602 states have internal predecessors, (863), 207 states have call successors, (207), 28 states have call predecessors, (207), 64 states have return successors, (502), 330 states have call predecessors, (502), 207 states have call successors, (502) [2022-01-10 07:27:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1572 transitions. [2022-01-10 07:27:19,550 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1572 transitions. Word has length 136 [2022-01-10 07:27:19,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:27:19,550 INFO L470 AbstractCegarLoop]: Abstraction has 961 states and 1572 transitions. [2022-01-10 07:27:19,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-01-10 07:27:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1572 transitions. [2022-01-10 07:27:19,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 07:27:19,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:27:19,553 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:27:19,577 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 07:27:19,767 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 07:27:19,767 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:27:19,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:27:19,768 INFO L85 PathProgramCache]: Analyzing trace with hash -462837888, now seen corresponding path program 1 times [2022-01-10 07:27:19,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:27:19,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55069833] [2022-01-10 07:27:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:27:19,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:27:19,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:27:19,784 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 07:27:19,785 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 07:27:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:27:23,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 134 conjunts are in the unsatisfiable core [2022-01-10 07:27:23,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:27:23,527 INFO L353 Elim1Store]: treesize reduction 40, result has 45.2 percent of original size [2022-01-10 07:27:23,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 41 treesize of output 61 [2022-01-10 07:27:25,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 07:27:30,380 WARN L228 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 90 DAG size of output: 57 (called from [L 350] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-01-10 07:27:30,381 INFO L353 Elim1Store]: treesize reduction 343, result has 26.2 percent of original size [2022-01-10 07:27:30,381 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 516 treesize of output 234 [2022-01-10 07:27:30,459 INFO L353 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2022-01-10 07:27:30,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 192 treesize of output 212 [2022-01-10 07:27:30,563 INFO L353 Elim1Store]: treesize reduction 61, result has 12.9 percent of original size [2022-01-10 07:27:30,564 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 139 treesize of output 163 [2022-01-10 07:27:31,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 07:27:31,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 07:27:40,751 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 07:27:40,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2022-01-10 07:27:40,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-01-10 07:27:40,784 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-01-10 07:27:40,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 07:27:40,806 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-01-10 07:27:40,823 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 07:27:41,586 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 07:27:41,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 147 [2022-01-10 07:27:41,609 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 07:27:41,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 143 [2022-01-10 07:27:41,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:27:41,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55069833] [2022-01-10 07:27:41,617 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-10 07:27:41,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-01-10 07:27:41,818 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 07:27:41,818 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Should have been eliminated by DER at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:154) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:126) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:95) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:90) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:904) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:496) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-10 07:27:41,821 INFO L158 Benchmark]: Toolchain (without parser) took 60785.71ms. Allocated memory was 201.3MB in the beginning and 298.8MB in the end (delta: 97.5MB). Free memory was 145.1MB in the beginning and 162.9MB in the end (delta: -17.7MB). Peak memory consumption was 157.8MB. Max. memory is 8.0GB. [2022-01-10 07:27:41,822 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 163.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 07:27:41,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.94ms. Allocated memory was 201.3MB in the beginning and 248.5MB in the end (delta: 47.2MB). Free memory was 144.9MB in the beginning and 204.8MB in the end (delta: -59.9MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. [2022-01-10 07:27:41,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.00ms. Allocated memory is still 248.5MB. Free memory was 204.8MB in the beginning and 200.7MB in the end (delta: 4.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-01-10 07:27:41,822 INFO L158 Benchmark]: Boogie Preprocessor took 58.96ms. Allocated memory is still 248.5MB. Free memory was 200.7MB in the beginning and 196.9MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 07:27:41,822 INFO L158 Benchmark]: RCFGBuilder took 3047.94ms. Allocated memory is still 248.5MB. Free memory was 196.9MB in the beginning and 208.1MB in the end (delta: -11.2MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. [2022-01-10 07:27:41,822 INFO L158 Benchmark]: TraceAbstraction took 57025.23ms. Allocated memory was 248.5MB in the beginning and 298.8MB in the end (delta: 50.3MB). Free memory was 207.6MB in the beginning and 162.9MB in the end (delta: 44.7MB). Peak memory consumption was 172.6MB. Max. memory is 8.0GB. [2022-01-10 07:27:41,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 163.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 561.94ms. Allocated memory was 201.3MB in the beginning and 248.5MB in the end (delta: 47.2MB). Free memory was 144.9MB in the beginning and 204.8MB in the end (delta: -59.9MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 73.00ms. Allocated memory is still 248.5MB. Free memory was 204.8MB in the beginning and 200.7MB in the end (delta: 4.1MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.96ms. Allocated memory is still 248.5MB. Free memory was 200.7MB in the beginning and 196.9MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 3047.94ms. Allocated memory is still 248.5MB. Free memory was 196.9MB in the beginning and 208.1MB in the end (delta: -11.2MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. * TraceAbstraction took 57025.23ms. Allocated memory was 248.5MB in the beginning and 298.8MB in the end (delta: 50.3MB). Free memory was 207.6MB in the beginning and 162.9MB in the end (delta: 44.7MB). Peak memory consumption was 172.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Should have been eliminated by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Should have been eliminated by DER: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:108) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-10 07:27:41,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...