/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 02:13:05,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 02:13:05,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 02:13:05,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 02:13:05,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 02:13:05,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 02:13:05,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 02:13:05,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 02:13:05,236 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 02:13:05,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 02:13:05,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 02:13:05,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 02:13:05,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 02:13:05,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 02:13:05,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 02:13:05,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 02:13:05,238 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 02:13:05,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 02:13:05,238 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 02:13:05,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 02:13:05,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 02:13:05,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 02:13:05,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 02:13:05,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 02:13:05,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 02:13:05,239 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 02:13:05,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 02:13:05,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 02:13:05,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 02:13:05,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 02:13:05,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 02:13:05,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 02:13:05,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 02:13:05,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:13:05,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 02:13:05,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 02:13:05,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 02:13:05,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 02:13:05,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 02:13:05,241 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 02:13:05,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 02:13:05,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 02:13:05,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 02:13:05,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 02:13:05,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 02:13:05,485 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 02:13:05,485 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 02:13:05,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c [2022-01-18 02:13:05,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48746a215/e4c579063c624897a2203d1509d5b564/FLAG565e8927a [2022-01-18 02:13:05,935 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 02:13:05,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c [2022-01-18 02:13:05,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48746a215/e4c579063c624897a2203d1509d5b564/FLAG565e8927a [2022-01-18 02:13:05,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48746a215/e4c579063c624897a2203d1509d5b564 [2022-01-18 02:13:05,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 02:13:05,952 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 02:13:05,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 02:13:05,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 02:13:05,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 02:13:05,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:13:05" (1/1) ... [2022-01-18 02:13:05,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af37902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:05, skipping insertion in model container [2022-01-18 02:13:05,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:13:05" (1/1) ... [2022-01-18 02:13:05,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 02:13:05,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 02:13:06,148 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2022-01-18 02:13:06,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:13:06,161 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 02:13:06,179 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-inc-subseq.wvr.c[2924,2937] [2022-01-18 02:13:06,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:13:06,193 INFO L208 MainTranslator]: Completed translation [2022-01-18 02:13:06,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:06 WrapperNode [2022-01-18 02:13:06,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 02:13:06,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 02:13:06,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 02:13:06,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 02:13:06,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:06" (1/1) ... [2022-01-18 02:13:06,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:06" (1/1) ... [2022-01-18 02:13:06,229 INFO L137 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 191 [2022-01-18 02:13:06,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 02:13:06,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 02:13:06,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 02:13:06,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 02:13:06,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:06" (1/1) ... [2022-01-18 02:13:06,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:06" (1/1) ... [2022-01-18 02:13:06,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:06" (1/1) ... [2022-01-18 02:13:06,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:06" (1/1) ... [2022-01-18 02:13:06,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:06" (1/1) ... [2022-01-18 02:13:06,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:06" (1/1) ... [2022-01-18 02:13:06,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:06" (1/1) ... [2022-01-18 02:13:06,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 02:13:06,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 02:13:06,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 02:13:06,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 02:13:06,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:06" (1/1) ... [2022-01-18 02:13:06,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:13:06,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:13:06,308 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) [2022-01-18 02:13:06,320 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 [2022-01-18 02:13:06,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 02:13:06,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 02:13:06,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 02:13:06,347 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 02:13:06,347 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 02:13:06,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 02:13:06,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 02:13:06,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 02:13:06,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 02:13:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 02:13:06,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 02:13:06,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 02:13:06,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 02:13:06,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 02:13:06,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 02:13:06,353 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 02:13:06,455 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 02:13:06,456 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 02:13:06,705 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 02:13:06,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 02:13:06,759 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-18 02:13:06,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:13:06 BoogieIcfgContainer [2022-01-18 02:13:06,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 02:13:06,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 02:13:06,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 02:13:06,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 02:13:06,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 02:13:05" (1/3) ... [2022-01-18 02:13:06,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dcf58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:13:06, skipping insertion in model container [2022-01-18 02:13:06,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:13:06" (2/3) ... [2022-01-18 02:13:06,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61dcf58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:13:06, skipping insertion in model container [2022-01-18 02:13:06,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:13:06" (3/3) ... [2022-01-18 02:13:06,770 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2022-01-18 02:13:06,774 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 02:13:06,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 02:13:06,774 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 02:13:06,774 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 02:13:06,809 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,810 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,810 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,810 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,810 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,811 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,811 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,812 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,812 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,812 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,812 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,816 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,818 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,818 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,818 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,825 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,825 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,825 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,826 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,826 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,826 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,826 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,826 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,826 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,826 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,827 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:13:06,834 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 02:13:06,868 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 02:13:06,873 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=FINITE_AUTOMATA, 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 [2022-01-18 02:13:06,874 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 02:13:06,885 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 181 places, 189 transitions, 394 flow [2022-01-18 02:13:06,957 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 704 states, 703 states have (on average 2.52773826458037) internal successors, (1777), 703 states have internal predecessors, (1777), 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) [2022-01-18 02:13:06,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 704 states, 703 states have (on average 2.52773826458037) internal successors, (1777), 703 states have internal predecessors, (1777), 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) [2022-01-18 02:13:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-18 02:13:06,979 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:13:06,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:13:06,980 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:13:06,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:13:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash -7555604, now seen corresponding path program 1 times [2022-01-18 02:13:06,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:13:06,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926890992] [2022-01-18 02:13:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:13:06,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:13:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:13:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:13:07,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:13:07,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926890992] [2022-01-18 02:13:07,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926890992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:13:07,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:13:07,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 02:13:07,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013936623] [2022-01-18 02:13:07,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:13:07,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 02:13:07,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:13:07,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 02:13:07,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:13:07,337 INFO L87 Difference]: Start difference. First operand has 704 states, 703 states have (on average 2.52773826458037) internal successors, (1777), 703 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2022-01-18 02:13:07,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:13:07,395 INFO L93 Difference]: Finished difference Result 704 states and 1672 transitions. [2022-01-18 02:13:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 02:13:07,398 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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 132 [2022-01-18 02:13:07,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:13:07,420 INFO L225 Difference]: With dead ends: 704 [2022-01-18 02:13:07,420 INFO L226 Difference]: Without dead ends: 698 [2022-01-18 02:13:07,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:13:07,425 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:13:07,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:13:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-01-18 02:13:07,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2022-01-18 02:13:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 2.3902439024390243) internal successors, (1666), 697 states have internal predecessors, (1666), 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) [2022-01-18 02:13:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1666 transitions. [2022-01-18 02:13:07,510 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1666 transitions. Word has length 132 [2022-01-18 02:13:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:13:07,511 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 1666 transitions. [2022-01-18 02:13:07,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2022-01-18 02:13:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1666 transitions. [2022-01-18 02:13:07,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-18 02:13:07,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:13:07,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:13:07,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 02:13:07,517 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:13:07,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:13:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash 962025419, now seen corresponding path program 1 times [2022-01-18 02:13:07,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:13:07,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161846492] [2022-01-18 02:13:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:13:07,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:13:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:13:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:13:07,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:13:07,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161846492] [2022-01-18 02:13:07,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161846492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:13:07,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:13:07,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 02:13:07,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380812211] [2022-01-18 02:13:07,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:13:07,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 02:13:07,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:13:07,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 02:13:07,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-18 02:13:07,803 INFO L87 Difference]: Start difference. First operand 698 states and 1666 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2022-01-18 02:13:07,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:13:07,971 INFO L93 Difference]: Finished difference Result 1118 states and 2818 transitions. [2022-01-18 02:13:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 02:13:07,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 132 [2022-01-18 02:13:07,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:13:07,979 INFO L225 Difference]: With dead ends: 1118 [2022-01-18 02:13:07,979 INFO L226 Difference]: Without dead ends: 1118 [2022-01-18 02:13:07,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 02:13:07,987 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 132 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:13:07,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 431 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:13:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-01-18 02:13:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 740. [2022-01-18 02:13:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 2.404600811907984) internal successors, (1777), 739 states have internal predecessors, (1777), 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) [2022-01-18 02:13:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1777 transitions. [2022-01-18 02:13:08,026 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1777 transitions. Word has length 132 [2022-01-18 02:13:08,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:13:08,028 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 1777 transitions. [2022-01-18 02:13:08,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2022-01-18 02:13:08,029 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1777 transitions. [2022-01-18 02:13:08,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 02:13:08,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:13:08,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:13:08,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 02:13:08,033 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:13:08,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:13:08,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1932159763, now seen corresponding path program 1 times [2022-01-18 02:13:08,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:13:08,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714538903] [2022-01-18 02:13:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:13:08,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:13:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:13:08,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:13:08,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:13:08,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714538903] [2022-01-18 02:13:08,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714538903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:13:08,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:13:08,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 02:13:08,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279290338] [2022-01-18 02:13:08,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:13:08,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 02:13:08,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:13:08,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 02:13:08,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-18 02:13:08,228 INFO L87 Difference]: Start difference. First operand 740 states and 1777 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2022-01-18 02:13:08,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:13:08,354 INFO L93 Difference]: Finished difference Result 1185 states and 2913 transitions. [2022-01-18 02:13:08,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 02:13:08,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 137 [2022-01-18 02:13:08,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:13:08,361 INFO L225 Difference]: With dead ends: 1185 [2022-01-18 02:13:08,361 INFO L226 Difference]: Without dead ends: 1124 [2022-01-18 02:13:08,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-01-18 02:13:08,367 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 318 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:13:08,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 484 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:13:08,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-01-18 02:13:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 741. [2022-01-18 02:13:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 2.402702702702703) internal successors, (1778), 740 states have internal predecessors, (1778), 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) [2022-01-18 02:13:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1778 transitions. [2022-01-18 02:13:08,391 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1778 transitions. Word has length 137 [2022-01-18 02:13:08,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:13:08,392 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 1778 transitions. [2022-01-18 02:13:08,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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) [2022-01-18 02:13:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1778 transitions. [2022-01-18 02:13:08,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-18 02:13:08,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:13:08,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:13:08,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 02:13:08,396 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:13:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:13:08,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1113696768, now seen corresponding path program 1 times [2022-01-18 02:13:08,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:13:08,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796884876] [2022-01-18 02:13:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:13:08,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:13:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:13:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:13:08,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:13:08,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796884876] [2022-01-18 02:13:08,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796884876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:13:08,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:13:08,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 02:13:08,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282240325] [2022-01-18 02:13:08,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:13:08,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 02:13:08,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:13:08,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 02:13:08,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 02:13:08,531 INFO L87 Difference]: Start difference. First operand 741 states and 1778 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2022-01-18 02:13:08,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:13:08,603 INFO L93 Difference]: Finished difference Result 1101 states and 2768 transitions. [2022-01-18 02:13:08,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 02:13:08,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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 144 [2022-01-18 02:13:08,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:13:08,608 INFO L225 Difference]: With dead ends: 1101 [2022-01-18 02:13:08,608 INFO L226 Difference]: Without dead ends: 918 [2022-01-18 02:13:08,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 02:13:08,614 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 19 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:13:08,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 483 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:13:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2022-01-18 02:13:08,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 800. [2022-01-18 02:13:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 2.430538172715895) internal successors, (1942), 799 states have internal predecessors, (1942), 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) [2022-01-18 02:13:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1942 transitions. [2022-01-18 02:13:08,641 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1942 transitions. Word has length 144 [2022-01-18 02:13:08,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:13:08,642 INFO L470 AbstractCegarLoop]: Abstraction has 800 states and 1942 transitions. [2022-01-18 02:13:08,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2022-01-18 02:13:08,642 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1942 transitions. [2022-01-18 02:13:08,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-18 02:13:08,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:13:08,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:13:08,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 02:13:08,645 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:13:08,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:13:08,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1975010592, now seen corresponding path program 1 times [2022-01-18 02:13:08,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:13:08,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301488389] [2022-01-18 02:13:08,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:13:08,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:13:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:13:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:13:08,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:13:08,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301488389] [2022-01-18 02:13:08,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301488389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:13:08,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:13:08,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 02:13:08,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941294856] [2022-01-18 02:13:08,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:13:08,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 02:13:08,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:13:08,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 02:13:08,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 02:13:08,808 INFO L87 Difference]: Start difference. First operand 800 states and 1942 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 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) [2022-01-18 02:13:08,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:13:08,864 INFO L93 Difference]: Finished difference Result 976 states and 2324 transitions. [2022-01-18 02:13:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 02:13:08,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 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 149 [2022-01-18 02:13:08,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:13:08,869 INFO L225 Difference]: With dead ends: 976 [2022-01-18 02:13:08,869 INFO L226 Difference]: Without dead ends: 898 [2022-01-18 02:13:08,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 02:13:08,870 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 36 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:13:08,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 524 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:13:08,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2022-01-18 02:13:08,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 880. [2022-01-18 02:13:08,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 2.4175199089874857) internal successors, (2125), 879 states have internal predecessors, (2125), 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) [2022-01-18 02:13:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 2125 transitions. [2022-01-18 02:13:08,896 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 2125 transitions. Word has length 149 [2022-01-18 02:13:08,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:13:08,896 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 2125 transitions. [2022-01-18 02:13:08,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 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) [2022-01-18 02:13:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 2125 transitions. [2022-01-18 02:13:08,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-18 02:13:08,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:13:08,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:13:08,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 02:13:08,900 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:13:08,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:13:08,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1498906467, now seen corresponding path program 1 times [2022-01-18 02:13:08,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:13:08,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974924510] [2022-01-18 02:13:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:13:08,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:13:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:13:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:13:08,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:13:08,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974924510] [2022-01-18 02:13:08,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974924510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:13:08,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:13:08,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 02:13:08,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117332847] [2022-01-18 02:13:08,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:13:08,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 02:13:08,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:13:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 02:13:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 02:13:08,985 INFO L87 Difference]: Start difference. First operand 880 states and 2125 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2022-01-18 02:13:09,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:13:09,084 INFO L93 Difference]: Finished difference Result 1065 states and 2473 transitions. [2022-01-18 02:13:09,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 02:13:09,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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 153 [2022-01-18 02:13:09,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:13:09,089 INFO L225 Difference]: With dead ends: 1065 [2022-01-18 02:13:09,089 INFO L226 Difference]: Without dead ends: 886 [2022-01-18 02:13:09,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 02:13:09,091 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 107 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:13:09,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 632 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:13:09,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2022-01-18 02:13:09,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 881. [2022-01-18 02:13:09,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 880 states have (on average 2.415909090909091) internal successors, (2126), 880 states have internal predecessors, (2126), 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) [2022-01-18 02:13:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 2126 transitions. [2022-01-18 02:13:09,138 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 2126 transitions. Word has length 153 [2022-01-18 02:13:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:13:09,138 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 2126 transitions. [2022-01-18 02:13:09,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 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) [2022-01-18 02:13:09,138 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 2126 transitions. [2022-01-18 02:13:09,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-18 02:13:09,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:13:09,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:13:09,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 02:13:09,142 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:13:09,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:13:09,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1833342822, now seen corresponding path program 1 times [2022-01-18 02:13:09,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:13:09,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56368405] [2022-01-18 02:13:09,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:13:09,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:13:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:13:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:13:11,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:13:11,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56368405] [2022-01-18 02:13:11,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56368405] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:13:11,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931279301] [2022-01-18 02:13:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:13:11,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:13:11,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:13:11,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:13:11,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 02:13:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:13:11,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 02:13:11,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:13:11,476 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 [2022-01-18 02:13:11,924 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:13:11,924 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 11 treesize of output 11 [2022-01-18 02:13:13,458 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-01-18 02:13:13,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 44 [2022-01-18 02:13:13,486 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 27 treesize of output 15 [2022-01-18 02:13:13,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:13:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:13:13,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:13:14,818 INFO L353 Elim1Store]: treesize reduction 23, result has 58.2 percent of original size [2022-01-18 02:13:14,819 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 68 [2022-01-18 02:13:14,825 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 29 treesize of output 23 [2022-01-18 02:13:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:13:17,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931279301] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:13:17,891 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:13:17,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 26, 27] total 79 [2022-01-18 02:13:17,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427509572] [2022-01-18 02:13:17,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:13:17,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-18 02:13:17,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:13:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-18 02:13:17,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=5589, Unknown=3, NotChecked=0, Total=6162 [2022-01-18 02:13:17,895 INFO L87 Difference]: Start difference. First operand 881 states and 2126 transitions. Second operand has 79 states, 79 states have (on average 5.518987341772152) internal successors, (436), 79 states have internal predecessors, (436), 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) [2022-01-18 02:13:49,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:13:49,639 INFO L93 Difference]: Finished difference Result 10937 states and 28877 transitions. [2022-01-18 02:13:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-01-18 02:13:49,640 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 5.518987341772152) internal successors, (436), 79 states have internal predecessors, (436), 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 160 [2022-01-18 02:13:49,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:13:49,688 INFO L225 Difference]: With dead ends: 10937 [2022-01-18 02:13:49,688 INFO L226 Difference]: Without dead ends: 9815 [2022-01-18 02:13:49,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 316 SyntacticMatches, 56 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 37198 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=9078, Invalid=70080, Unknown=84, NotChecked=0, Total=79242 [2022-01-18 02:13:49,702 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 9147 mSDsluCounter, 12491 mSDsCounter, 0 mSdLazyCounter, 6096 mSolverCounterSat, 894 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9147 SdHoareTripleChecker+Valid, 11390 SdHoareTripleChecker+Invalid, 11201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 894 IncrementalHoareTripleChecker+Valid, 6096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4211 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:13:49,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9147 Valid, 11390 Invalid, 11201 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [894 Valid, 6096 Invalid, 0 Unknown, 4211 Unchecked, 3.7s Time] [2022-01-18 02:13:49,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9815 states. [2022-01-18 02:13:49,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9815 to 1914. [2022-01-18 02:13:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 2.4662833246210143) internal successors, (4718), 1913 states have internal predecessors, (4718), 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) [2022-01-18 02:13:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 4718 transitions. [2022-01-18 02:13:49,850 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 4718 transitions. Word has length 160 [2022-01-18 02:13:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:13:49,850 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 4718 transitions. [2022-01-18 02:13:49,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 5.518987341772152) internal successors, (436), 79 states have internal predecessors, (436), 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) [2022-01-18 02:13:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 4718 transitions. [2022-01-18 02:13:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-18 02:13:49,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:13:49,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:13:49,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 02:13:50,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:13:50,072 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:13:50,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:13:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2000453552, now seen corresponding path program 2 times [2022-01-18 02:13:50,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:13:50,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371526421] [2022-01-18 02:13:50,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:13:50,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:13:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:13:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:13:51,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:13:51,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371526421] [2022-01-18 02:13:51,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371526421] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:13:51,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011850718] [2022-01-18 02:13:51,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:13:51,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:13:51,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:13:51,436 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:13:51,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 02:13:51,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:13:51,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:13:51,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-18 02:13:51,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:13:51,650 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 [2022-01-18 02:13:52,174 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 02:13:52,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 02:13:52,820 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:13:52,821 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 11 treesize of output 11 [2022-01-18 02:13:53,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:13:53,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-18 02:13:53,628 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-01-18 02:13:54,141 INFO L353 Elim1Store]: treesize reduction 50, result has 5.7 percent of original size [2022-01-18 02:13:54,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 13 [2022-01-18 02:13:54,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:13:54,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:13:55,410 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:13:55,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 938 treesize of output 894 [2022-01-18 02:13:55,439 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:13:55,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 794 treesize of output 740 [2022-01-18 02:13:55,464 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:13:55,464 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 692 treesize of output 536 [2022-01-18 02:14:06,923 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 10 treesize of output 8 [2022-01-18 02:14:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:14:07,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011850718] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:14:07,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:14:07,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 28, 28] total 77 [2022-01-18 02:14:07,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306879478] [2022-01-18 02:14:07,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:14:07,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-18 02:14:07,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:14:07,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-18 02:14:07,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=5278, Unknown=13, NotChecked=0, Total=5852 [2022-01-18 02:14:07,024 INFO L87 Difference]: Start difference. First operand 1914 states and 4718 transitions. Second operand has 77 states, 77 states have (on average 5.675324675324675) internal successors, (437), 77 states have internal predecessors, (437), 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) [2022-01-18 02:14:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:14:23,545 INFO L93 Difference]: Finished difference Result 8574 states and 22484 transitions. [2022-01-18 02:14:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-01-18 02:14:23,545 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 5.675324675324675) internal successors, (437), 77 states have internal predecessors, (437), 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 160 [2022-01-18 02:14:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:14:23,582 INFO L225 Difference]: With dead ends: 8574 [2022-01-18 02:14:23,582 INFO L226 Difference]: Without dead ends: 8421 [2022-01-18 02:14:23,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 299 SyntacticMatches, 27 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14044 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=4689, Invalid=33842, Unknown=81, NotChecked=0, Total=38612 [2022-01-18 02:14:23,585 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 4778 mSDsluCounter, 9688 mSDsCounter, 0 mSdLazyCounter, 3752 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4778 SdHoareTripleChecker+Valid, 9019 SdHoareTripleChecker+Invalid, 8268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 3752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4197 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:14:23,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4778 Valid, 9019 Invalid, 8268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 3752 Invalid, 0 Unknown, 4197 Unchecked, 2.1s Time] [2022-01-18 02:14:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8421 states. [2022-01-18 02:14:23,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8421 to 2939. [2022-01-18 02:14:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2938 states have (on average 2.5500340367597003) internal successors, (7492), 2938 states have internal predecessors, (7492), 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) [2022-01-18 02:14:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 7492 transitions. [2022-01-18 02:14:23,738 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 7492 transitions. Word has length 160 [2022-01-18 02:14:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:14:23,739 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 7492 transitions. [2022-01-18 02:14:23,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 5.675324675324675) internal successors, (437), 77 states have internal predecessors, (437), 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) [2022-01-18 02:14:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 7492 transitions. [2022-01-18 02:14:23,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-18 02:14:23,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:14:23,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:14:23,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 02:14:23,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-01-18 02:14:23,970 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:14:23,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:14:23,971 INFO L85 PathProgramCache]: Analyzing trace with hash 790906228, now seen corresponding path program 3 times [2022-01-18 02:14:23,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:14:23,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556681669] [2022-01-18 02:14:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:14:23,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:14:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:14:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:14:24,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:14:24,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556681669] [2022-01-18 02:14:24,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556681669] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:14:24,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980666800] [2022-01-18 02:14:24,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:14:24,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:14:24,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:14:24,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:14:24,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 02:14:24,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:14:24,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:14:24,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:14:24,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:14:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:14:24,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:14:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:14:24,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980666800] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:14:24,572 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:14:24,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-01-18 02:14:24,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991380378] [2022-01-18 02:14:24,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:14:24,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 02:14:24,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:14:24,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 02:14:24,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-18 02:14:24,574 INFO L87 Difference]: Start difference. First operand 2939 states and 7492 transitions. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 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) [2022-01-18 02:14:24,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:14:24,672 INFO L93 Difference]: Finished difference Result 4035 states and 10526 transitions. [2022-01-18 02:14:24,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 02:14:24,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 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 160 [2022-01-18 02:14:24,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:14:24,683 INFO L225 Difference]: With dead ends: 4035 [2022-01-18 02:14:24,683 INFO L226 Difference]: Without dead ends: 4035 [2022-01-18 02:14:24,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 312 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 02:14:24,684 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 136 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:14:24,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1003 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:14:24,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2022-01-18 02:14:24,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 2907. [2022-01-18 02:14:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2907 states, 2906 states have (on average 2.5478320715760496) internal successors, (7404), 2906 states have internal predecessors, (7404), 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) [2022-01-18 02:14:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 7404 transitions. [2022-01-18 02:14:24,749 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 7404 transitions. Word has length 160 [2022-01-18 02:14:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:14:24,750 INFO L470 AbstractCegarLoop]: Abstraction has 2907 states and 7404 transitions. [2022-01-18 02:14:24,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 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) [2022-01-18 02:14:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 7404 transitions. [2022-01-18 02:14:24,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-18 02:14:24,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:14:24,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:14:24,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 02:14:24,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:14:24,972 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:14:24,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:14:24,972 INFO L85 PathProgramCache]: Analyzing trace with hash 228136074, now seen corresponding path program 4 times [2022-01-18 02:14:24,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:14:24,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988070168] [2022-01-18 02:14:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:14:24,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:14:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:14:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:14:26,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:14:26,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988070168] [2022-01-18 02:14:26,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988070168] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:14:26,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57326590] [2022-01-18 02:14:26,155 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:14:26,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:14:26,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:14:26,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:14:26,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 02:14:26,236 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:14:26,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:14:26,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-18 02:14:26,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:14:26,664 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 [2022-01-18 02:14:26,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 02:14:27,545 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:14:27,546 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 11 treesize of output 11 [2022-01-18 02:14:27,792 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:14:28,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:14:29,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:14:29,069 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2022-01-18 02:14:29,403 INFO L353 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-01-18 02:14:29,403 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 42 treesize of output 10 [2022-01-18 02:14:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:14:29,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:14:38,001 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:14:38,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 92 [2022-01-18 02:14:38,050 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:14:38,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4204 treesize of output 3906 [2022-01-18 02:14:38,087 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:14:38,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3852 treesize of output 3372 [2022-01-18 02:14:38,122 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:14:38,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3324 treesize of output 3108 [2022-01-18 02:14:38,159 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:14:38,160 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3060 treesize of output 2244 [2022-01-18 02:15:01,814 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 10 treesize of output 8 [2022-01-18 02:15:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:15:02,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57326590] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:15:02,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:15:02,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 35, 34] total 90 [2022-01-18 02:15:02,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882802279] [2022-01-18 02:15:02,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:15:02,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-18 02:15:02,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:15:02,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-18 02:15:02,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=830, Invalid=7102, Unknown=78, NotChecked=0, Total=8010 [2022-01-18 02:15:02,364 INFO L87 Difference]: Start difference. First operand 2907 states and 7404 transitions. Second operand has 90 states, 90 states have (on average 4.7) internal successors, (423), 90 states have internal predecessors, (423), 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) [2022-01-18 02:15:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:15:10,867 INFO L93 Difference]: Finished difference Result 6127 states and 16012 transitions. [2022-01-18 02:15:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 02:15:10,868 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 4.7) internal successors, (423), 90 states have internal predecessors, (423), 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 160 [2022-01-18 02:15:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:15:10,883 INFO L225 Difference]: With dead ends: 6127 [2022-01-18 02:15:10,883 INFO L226 Difference]: Without dead ends: 5632 [2022-01-18 02:15:10,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 274 SyntacticMatches, 7 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7587 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=2974, Invalid=21268, Unknown=250, NotChecked=0, Total=24492 [2022-01-18 02:15:10,886 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 2515 mSDsluCounter, 10130 mSDsCounter, 0 mSdLazyCounter, 3158 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2515 SdHoareTripleChecker+Valid, 9478 SdHoareTripleChecker+Invalid, 5770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 3158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2460 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:15:10,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2515 Valid, 9478 Invalid, 5770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 3158 Invalid, 0 Unknown, 2460 Unchecked, 1.5s Time] [2022-01-18 02:15:10,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5632 states. [2022-01-18 02:15:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5632 to 3022. [2022-01-18 02:15:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 3021 states have (on average 2.5435286329030125) internal successors, (7684), 3021 states have internal predecessors, (7684), 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) [2022-01-18 02:15:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 7684 transitions. [2022-01-18 02:15:11,009 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 7684 transitions. Word has length 160 [2022-01-18 02:15:11,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:15:11,009 INFO L470 AbstractCegarLoop]: Abstraction has 3022 states and 7684 transitions. [2022-01-18 02:15:11,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 4.7) internal successors, (423), 90 states have internal predecessors, (423), 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) [2022-01-18 02:15:11,011 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 7684 transitions. [2022-01-18 02:15:11,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-18 02:15:11,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:15:11,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:15:11,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 02:15:11,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:15:11,232 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:15:11,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:15:11,232 INFO L85 PathProgramCache]: Analyzing trace with hash 399907180, now seen corresponding path program 5 times [2022-01-18 02:15:11,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:15:11,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296842017] [2022-01-18 02:15:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:15:11,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:15:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:15:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:15:12,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:15:12,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296842017] [2022-01-18 02:15:12,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296842017] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:15:12,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28468750] [2022-01-18 02:15:12,963 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:15:12,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:15:12,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:15:12,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:15:12,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 02:15:13,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:15:13,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:15:13,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 74 conjunts are in the unsatisfiable core [2022-01-18 02:15:13,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:15:14,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-18 02:15:15,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:15:15,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-01-18 02:15:15,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:15:15,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-01-18 02:15:15,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:15:15,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:15:15,876 INFO L353 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-01-18 02:15:15,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 13 [2022-01-18 02:15:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:15:15,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:15:21,839 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:15:21,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 79 [2022-01-18 02:15:21,876 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:15:21,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 979 treesize of output 951 [2022-01-18 02:15:21,931 INFO L353 Elim1Store]: treesize reduction 44, result has 54.6 percent of original size [2022-01-18 02:15:21,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1315 treesize of output 1304 [2022-01-18 02:15:21,962 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:15:21,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1316 treesize of output 1124 [2022-01-18 02:15:21,995 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:15:21,995 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1076 treesize of output 1004 [2022-01-18 02:15:35,876 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:15:35,877 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 233 treesize of output 226 [2022-01-18 02:15:36,112 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:15:36,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 97 [2022-01-18 02:15:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:15:38,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28468750] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:15:38,483 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:15:38,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 29] total 90 [2022-01-18 02:15:38,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542861343] [2022-01-18 02:15:38,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:15:38,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-18 02:15:38,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:15:38,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-18 02:15:38,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=641, Invalid=7307, Unknown=62, NotChecked=0, Total=8010 [2022-01-18 02:15:38,485 INFO L87 Difference]: Start difference. First operand 3022 states and 7684 transitions. Second operand has 90 states, 90 states have (on average 4.844444444444444) internal successors, (436), 90 states have internal predecessors, (436), 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) [2022-01-18 02:15:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:15:53,708 INFO L93 Difference]: Finished difference Result 5074 states and 12946 transitions. [2022-01-18 02:15:53,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 02:15:53,708 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 4.844444444444444) internal successors, (436), 90 states have internal predecessors, (436), 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 160 [2022-01-18 02:15:53,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:15:53,721 INFO L225 Difference]: With dead ends: 5074 [2022-01-18 02:15:53,721 INFO L226 Difference]: Without dead ends: 4732 [2022-01-18 02:15:53,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 275 SyntacticMatches, 10 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10921 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=4683, Invalid=31165, Unknown=62, NotChecked=0, Total=35910 [2022-01-18 02:15:53,724 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 4406 mSDsluCounter, 8217 mSDsCounter, 0 mSdLazyCounter, 4008 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4406 SdHoareTripleChecker+Valid, 7788 SdHoareTripleChecker+Invalid, 6386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 4008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1994 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:15:53,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4406 Valid, 7788 Invalid, 6386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 4008 Invalid, 0 Unknown, 1994 Unchecked, 2.1s Time] [2022-01-18 02:15:53,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2022-01-18 02:15:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 3022. [2022-01-18 02:15:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3022 states, 3021 states have (on average 2.5435286329030125) internal successors, (7684), 3021 states have internal predecessors, (7684), 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) [2022-01-18 02:15:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 7684 transitions. [2022-01-18 02:15:53,810 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 7684 transitions. Word has length 160 [2022-01-18 02:15:53,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:15:53,810 INFO L470 AbstractCegarLoop]: Abstraction has 3022 states and 7684 transitions. [2022-01-18 02:15:53,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 4.844444444444444) internal successors, (436), 90 states have internal predecessors, (436), 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) [2022-01-18 02:15:53,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 7684 transitions. [2022-01-18 02:15:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-18 02:15:53,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:15:53,819 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:15:53,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 02:15:54,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-18 02:15:54,044 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:15:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:15:54,044 INFO L85 PathProgramCache]: Analyzing trace with hash -400624774, now seen corresponding path program 6 times [2022-01-18 02:15:54,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:15:54,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277010473] [2022-01-18 02:15:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:15:54,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:15:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:15:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:15:54,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:15:54,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277010473] [2022-01-18 02:15:54,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277010473] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:15:54,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577692126] [2022-01-18 02:15:54,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:15:54,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:15:54,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:15:54,142 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:15:54,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 02:15:54,294 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:15:54,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:15:54,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 02:15:54,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:15:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:15:54,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:15:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:15:54,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577692126] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:15:54,933 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:15:54,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2022-01-18 02:15:54,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685969690] [2022-01-18 02:15:54,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:15:54,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 02:15:54,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:15:54,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 02:15:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 02:15:54,935 INFO L87 Difference]: Start difference. First operand 3022 states and 7684 transitions. Second operand has 20 states, 20 states have (on average 15.7) internal successors, (314), 20 states have internal predecessors, (314), 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) [2022-01-18 02:15:55,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:15:55,306 INFO L93 Difference]: Finished difference Result 7409 states and 19270 transitions. [2022-01-18 02:15:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 02:15:55,307 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 15.7) internal successors, (314), 20 states have internal predecessors, (314), 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 165 [2022-01-18 02:15:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:15:55,318 INFO L225 Difference]: With dead ends: 7409 [2022-01-18 02:15:55,318 INFO L226 Difference]: Without dead ends: 5709 [2022-01-18 02:15:55,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:15:55,319 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 1825 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1825 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:15:55,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1825 Valid, 1745 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:15:55,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5709 states. [2022-01-18 02:15:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5709 to 4282. [2022-01-18 02:15:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 4281 states have (on average 2.4982480728801684) internal successors, (10695), 4281 states have internal predecessors, (10695), 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) [2022-01-18 02:15:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 10695 transitions. [2022-01-18 02:15:55,419 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 10695 transitions. Word has length 165 [2022-01-18 02:15:55,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:15:55,420 INFO L470 AbstractCegarLoop]: Abstraction has 4282 states and 10695 transitions. [2022-01-18 02:15:55,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 15.7) internal successors, (314), 20 states have internal predecessors, (314), 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) [2022-01-18 02:15:55,420 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 10695 transitions. [2022-01-18 02:15:55,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-18 02:15:55,429 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:15:55,429 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:15:55,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 02:15:55,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:15:55,653 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:15:55,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:15:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1907307964, now seen corresponding path program 1 times [2022-01-18 02:15:55,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:15:55,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432368325] [2022-01-18 02:15:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:15:55,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:15:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:15:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:15:55,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:15:55,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432368325] [2022-01-18 02:15:55,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432368325] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:15:55,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221940209] [2022-01-18 02:15:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:15:55,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:15:55,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:15:55,760 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:15:55,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 02:15:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:15:55,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:15:55,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:15:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:15:56,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:15:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:15:56,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221940209] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:15:56,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:15:56,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2022-01-18 02:15:56,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29759341] [2022-01-18 02:15:56,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:15:56,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 02:15:56,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:15:56,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 02:15:56,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2022-01-18 02:15:56,591 INFO L87 Difference]: Start difference. First operand 4282 states and 10695 transitions. Second operand has 24 states, 24 states have (on average 14.708333333333334) internal successors, (353), 24 states have internal predecessors, (353), 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) [2022-01-18 02:15:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:15:56,880 INFO L93 Difference]: Finished difference Result 5708 states and 13963 transitions. [2022-01-18 02:15:56,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 02:15:56,880 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 14.708333333333334) internal successors, (353), 24 states have internal predecessors, (353), 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 165 [2022-01-18 02:15:56,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:15:56,888 INFO L225 Difference]: With dead ends: 5708 [2022-01-18 02:15:56,888 INFO L226 Difference]: Without dead ends: 5066 [2022-01-18 02:15:56,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=321, Invalid=939, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 02:15:56,889 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1292 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:15:56,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 1045 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:15:56,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5066 states. [2022-01-18 02:15:56,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5066 to 4537. [2022-01-18 02:15:56,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 4536 states have (on average 2.486552028218695) internal successors, (11279), 4536 states have internal predecessors, (11279), 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) [2022-01-18 02:15:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 11279 transitions. [2022-01-18 02:15:56,975 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 11279 transitions. Word has length 165 [2022-01-18 02:15:56,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:15:56,975 INFO L470 AbstractCegarLoop]: Abstraction has 4537 states and 11279 transitions. [2022-01-18 02:15:56,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 14.708333333333334) internal successors, (353), 24 states have internal predecessors, (353), 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) [2022-01-18 02:15:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 11279 transitions. [2022-01-18 02:15:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-18 02:15:56,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:15:56,985 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:15:57,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 02:15:57,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:15:57,204 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:15:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:15:57,204 INFO L85 PathProgramCache]: Analyzing trace with hash -589330423, now seen corresponding path program 7 times [2022-01-18 02:15:57,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:15:57,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078889456] [2022-01-18 02:15:57,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:15:57,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:15:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:15:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:15:59,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:15:59,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078889456] [2022-01-18 02:15:59,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078889456] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:15:59,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525907754] [2022-01-18 02:15:59,723 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:15:59,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:15:59,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:15:59,724 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:15:59,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 02:15:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:15:59,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 02:15:59,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:16:01,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:16:01,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2022-01-18 02:16:01,568 INFO L353 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-01-18 02:16:01,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 44 treesize of output 10 [2022-01-18 02:16:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:16:01,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:16:02,368 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:16:02,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 157 [2022-01-18 02:16:02,385 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:16:02,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 118 [2022-01-18 02:16:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:16:04,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525907754] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:16:04,787 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:16:04,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 30, 30] total 90 [2022-01-18 02:16:04,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491042984] [2022-01-18 02:16:04,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:16:04,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-01-18 02:16:04,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:16:04,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-01-18 02:16:04,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=919, Invalid=7090, Unknown=1, NotChecked=0, Total=8010 [2022-01-18 02:16:04,789 INFO L87 Difference]: Start difference. First operand 4537 states and 11279 transitions. Second operand has 90 states, 90 states have (on average 5.0777777777777775) internal successors, (457), 90 states have internal predecessors, (457), 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) [2022-01-18 02:16:13,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:16:13,858 INFO L93 Difference]: Finished difference Result 13260 states and 34754 transitions. [2022-01-18 02:16:13,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 02:16:13,859 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 5.0777777777777775) internal successors, (457), 90 states have internal predecessors, (457), 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 167 [2022-01-18 02:16:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:16:13,876 INFO L225 Difference]: With dead ends: 13260 [2022-01-18 02:16:13,876 INFO L226 Difference]: Without dead ends: 10389 [2022-01-18 02:16:13,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11654 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=4436, Invalid=30340, Unknown=6, NotChecked=0, Total=34782 [2022-01-18 02:16:13,879 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 4147 mSDsluCounter, 6028 mSDsCounter, 0 mSdLazyCounter, 3228 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4147 SdHoareTripleChecker+Valid, 5766 SdHoareTripleChecker+Invalid, 4430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 3228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 908 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:16:13,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4147 Valid, 5766 Invalid, 4430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 3228 Invalid, 0 Unknown, 908 Unchecked, 1.6s Time] [2022-01-18 02:16:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10389 states. [2022-01-18 02:16:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10389 to 3699. [2022-01-18 02:16:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3699 states, 3698 states have (on average 2.493510005408329) internal successors, (9221), 3698 states have internal predecessors, (9221), 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) [2022-01-18 02:16:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3699 states to 3699 states and 9221 transitions. [2022-01-18 02:16:14,008 INFO L78 Accepts]: Start accepts. Automaton has 3699 states and 9221 transitions. Word has length 167 [2022-01-18 02:16:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:16:14,008 INFO L470 AbstractCegarLoop]: Abstraction has 3699 states and 9221 transitions. [2022-01-18 02:16:14,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 5.0777777777777775) internal successors, (457), 90 states have internal predecessors, (457), 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) [2022-01-18 02:16:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3699 states and 9221 transitions. [2022-01-18 02:16:14,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-18 02:16:14,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:16:14,017 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:16:14,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 02:16:14,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 02:16:14,241 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:16:14,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:16:14,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1950097392, now seen corresponding path program 8 times [2022-01-18 02:16:14,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:16:14,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665225358] [2022-01-18 02:16:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:16:14,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:16:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:16:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:16:15,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:16:15,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665225358] [2022-01-18 02:16:15,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665225358] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:16:15,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105456879] [2022-01-18 02:16:15,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:16:15,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:16:15,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:16:15,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:16:15,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 02:16:15,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:16:15,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:16:15,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 91 conjunts are in the unsatisfiable core [2022-01-18 02:16:15,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:16:15,906 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 [2022-01-18 02:16:15,947 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 02:16:15,947 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-01-18 02:16:16,496 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-01-18 02:16:16,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-01-18 02:16:17,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 02:16:18,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:16:18,733 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-01-18 02:16:18,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 21 [2022-01-18 02:16:19,008 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-01-18 02:16:19,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:16:19,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-18 02:16:20,327 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-18 02:16:20,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2022-01-18 02:16:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:16:20,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:16:26,439 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:16:26,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 80 [2022-01-18 02:16:26,452 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:16:26,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2008 treesize of output 1944 [2022-01-18 02:16:26,477 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:16:26,478 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1928 treesize of output 1544 [2022-01-18 02:16:26,520 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:16:26,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1496 treesize of output 1392 [2022-01-18 02:16:26,556 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:16:26,556 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1308 treesize of output 1140 [2022-01-18 02:16:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:16:43,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105456879] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:16:43,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:16:43,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 37, 40] total 100 [2022-01-18 02:16:43,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477073128] [2022-01-18 02:16:43,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:16:43,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-18 02:16:43,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:16:43,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-18 02:16:43,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=977, Invalid=8847, Unknown=76, NotChecked=0, Total=9900 [2022-01-18 02:16:43,313 INFO L87 Difference]: Start difference. First operand 3699 states and 9221 transitions. Second operand has 100 states, 100 states have (on average 4.7) internal successors, (470), 100 states have internal predecessors, (470), 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) [2022-01-18 02:17:00,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:00,193 INFO L93 Difference]: Finished difference Result 7287 states and 18459 transitions. [2022-01-18 02:17:00,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-01-18 02:17:00,194 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 4.7) internal successors, (470), 100 states have internal predecessors, (470), 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 174 [2022-01-18 02:17:00,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:00,205 INFO L225 Difference]: With dead ends: 7287 [2022-01-18 02:17:00,206 INFO L226 Difference]: Without dead ends: 7261 [2022-01-18 02:17:00,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 291 SyntacticMatches, 6 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10876 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=4885, Invalid=27908, Unknown=149, NotChecked=0, Total=32942 [2022-01-18 02:17:00,208 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 2973 mSDsluCounter, 8328 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 8027 SdHoareTripleChecker+Invalid, 5298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2976 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:00,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2973 Valid, 8027 Invalid, 5298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2217 Invalid, 0 Unknown, 2976 Unchecked, 2.4s Time] [2022-01-18 02:17:00,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2022-01-18 02:17:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 4268. [2022-01-18 02:17:00,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4268 states, 4267 states have (on average 2.4642606046402626) internal successors, (10515), 4267 states have internal predecessors, (10515), 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) [2022-01-18 02:17:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 10515 transitions. [2022-01-18 02:17:00,297 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 10515 transitions. Word has length 174 [2022-01-18 02:17:00,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:00,297 INFO L470 AbstractCegarLoop]: Abstraction has 4268 states and 10515 transitions. [2022-01-18 02:17:00,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 4.7) internal successors, (470), 100 states have internal predecessors, (470), 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) [2022-01-18 02:17:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 10515 transitions. [2022-01-18 02:17:00,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-18 02:17:00,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:00,306 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:17:00,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 02:17:00,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 02:17:00,519 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:00,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash 9903012, now seen corresponding path program 9 times [2022-01-18 02:17:00,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:00,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759064980] [2022-01-18 02:17:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:00,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:04,693 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:17:04,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:04,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759064980] [2022-01-18 02:17:04,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759064980] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:17:04,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364853245] [2022-01-18 02:17:04,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:17:04,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:17:04,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:17:04,696 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:17:04,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 02:17:04,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:17:04,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:17:04,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-18 02:17:04,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:17:06,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:17:06,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2022-01-18 02:17:07,754 INFO L353 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-01-18 02:17:07,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 42 treesize of output 10 [2022-01-18 02:17:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-18 02:17:07,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:17:09,228 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:17:09,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 157 [2022-01-18 02:17:09,271 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:17:09,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 118 [2022-01-18 02:17:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-18 02:17:13,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364853245] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:17:13,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:17:13,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 20, 21] total 64 [2022-01-18 02:17:13,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882179420] [2022-01-18 02:17:13,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:17:13,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 02:17:13,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:13,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 02:17:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=3575, Unknown=5, NotChecked=0, Total=4032 [2022-01-18 02:17:13,266 INFO L87 Difference]: Start difference. First operand 4268 states and 10515 transitions. Second operand has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 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) [2022-01-18 02:17:26,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:26,469 INFO L93 Difference]: Finished difference Result 11049 states and 28935 transitions. [2022-01-18 02:17:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 02:17:26,469 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 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 174 [2022-01-18 02:17:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:26,483 INFO L225 Difference]: With dead ends: 11049 [2022-01-18 02:17:26,483 INFO L226 Difference]: Without dead ends: 9712 [2022-01-18 02:17:26,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 326 SyntacticMatches, 3 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5261 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=2649, Invalid=15978, Unknown=5, NotChecked=0, Total=18632 [2022-01-18 02:17:26,486 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 2414 mSDsluCounter, 5328 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2414 SdHoareTripleChecker+Valid, 5049 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 828 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:26,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2414 Valid, 5049 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2130 Invalid, 0 Unknown, 828 Unchecked, 3.0s Time] [2022-01-18 02:17:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2022-01-18 02:17:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 3243. [2022-01-18 02:17:26,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 3242 states have (on average 2.540715607649599) internal successors, (8237), 3242 states have internal predecessors, (8237), 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) [2022-01-18 02:17:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 8237 transitions. [2022-01-18 02:17:26,583 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 8237 transitions. Word has length 174 [2022-01-18 02:17:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:26,583 INFO L470 AbstractCegarLoop]: Abstraction has 3243 states and 8237 transitions. [2022-01-18 02:17:26,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.640625) internal successors, (425), 64 states have internal predecessors, (425), 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) [2022-01-18 02:17:26,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 8237 transitions. [2022-01-18 02:17:26,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-18 02:17:26,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:26,590 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:17:26,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 02:17:26,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 02:17:26,804 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:26,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:26,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1088583688, now seen corresponding path program 2 times [2022-01-18 02:17:26,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:26,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794312905] [2022-01-18 02:17:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:26,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-18 02:17:27,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:27,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794312905] [2022-01-18 02:17:27,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794312905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:17:27,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:17:27,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-18 02:17:27,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331598858] [2022-01-18 02:17:27,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:17:27,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 02:17:27,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:27,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 02:17:27,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-18 02:17:27,476 INFO L87 Difference]: Start difference. First operand 3243 states and 8237 transitions. Second operand has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 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) [2022-01-18 02:17:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:28,509 INFO L93 Difference]: Finished difference Result 3239 states and 8259 transitions. [2022-01-18 02:17:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 02:17:28,509 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 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 179 [2022-01-18 02:17:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:28,514 INFO L225 Difference]: With dead ends: 3239 [2022-01-18 02:17:28,514 INFO L226 Difference]: Without dead ends: 3239 [2022-01-18 02:17:28,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2022-01-18 02:17:28,515 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 343 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:28,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1005 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:17:28,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states. [2022-01-18 02:17:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 2973. [2022-01-18 02:17:28,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2973 states, 2972 states have (on average 2.5565275908479137) internal successors, (7598), 2972 states have internal predecessors, (7598), 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) [2022-01-18 02:17:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 7598 transitions. [2022-01-18 02:17:28,559 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 7598 transitions. Word has length 179 [2022-01-18 02:17:28,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:28,559 INFO L470 AbstractCegarLoop]: Abstraction has 2973 states and 7598 transitions. [2022-01-18 02:17:28,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 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) [2022-01-18 02:17:28,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 7598 transitions. [2022-01-18 02:17:28,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-18 02:17:28,564 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:28,564 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:17:28,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 02:17:28,564 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:28,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:28,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1272571933, now seen corresponding path program 10 times [2022-01-18 02:17:28,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:28,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748160743] [2022-01-18 02:17:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:28,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:17:28,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:28,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748160743] [2022-01-18 02:17:28,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748160743] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:17:28,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092415855] [2022-01-18 02:17:28,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:17:28,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:17:28,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:17:28,925 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:17:28,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 02:17:29,014 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:17:29,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:17:29,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:17:29,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:17:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 02:17:29,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:17:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-18 02:17:30,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092415855] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:17:30,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:17:30,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2022-01-18 02:17:30,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524134564] [2022-01-18 02:17:30,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:17:30,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 02:17:30,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:17:30,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 02:17:30,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2022-01-18 02:17:30,611 INFO L87 Difference]: Start difference. First operand 2973 states and 7598 transitions. Second operand has 26 states, 26 states have (on average 13.692307692307692) internal successors, (356), 26 states have internal predecessors, (356), 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) [2022-01-18 02:17:33,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:17:33,264 INFO L93 Difference]: Finished difference Result 4109 states and 10313 transitions. [2022-01-18 02:17:33,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 02:17:33,265 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.692307692307692) internal successors, (356), 26 states have internal predecessors, (356), 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 185 [2022-01-18 02:17:33,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:17:33,270 INFO L225 Difference]: With dead ends: 4109 [2022-01-18 02:17:33,270 INFO L226 Difference]: Without dead ends: 3395 [2022-01-18 02:17:33,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=881, Invalid=4231, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 02:17:33,271 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1841 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:17:33,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1841 Valid, 2451 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:17:33,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2022-01-18 02:17:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3144. [2022-01-18 02:17:33,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3144 states, 3143 states have (on average 2.605154311167674) internal successors, (8188), 3143 states have internal predecessors, (8188), 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) [2022-01-18 02:17:33,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 8188 transitions. [2022-01-18 02:17:33,310 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 8188 transitions. Word has length 185 [2022-01-18 02:17:33,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:17:33,310 INFO L470 AbstractCegarLoop]: Abstraction has 3144 states and 8188 transitions. [2022-01-18 02:17:33,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.692307692307692) internal successors, (356), 26 states have internal predecessors, (356), 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) [2022-01-18 02:17:33,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 8188 transitions. [2022-01-18 02:17:33,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-18 02:17:33,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:17:33,314 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:17:33,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-18 02:17:33,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 02:17:33,517 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:17:33,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:17:33,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1641267285, now seen corresponding path program 11 times [2022-01-18 02:17:33,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:17:33,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845731838] [2022-01-18 02:17:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:17:33,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:17:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:17:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:17:39,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:17:39,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845731838] [2022-01-18 02:17:39,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845731838] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:17:39,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783196619] [2022-01-18 02:17:39,473 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:17:39,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:17:39,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:17:39,474 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:17:39,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 02:17:39,592 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:17:39,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:17:39,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-18 02:17:39,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:17:39,640 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 [2022-01-18 02:17:40,513 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:17:40,513 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 11 treesize of output 11 [2022-01-18 02:17:46,952 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-01-18 02:17:46,952 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 74 [2022-01-18 02:17:46,989 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:17:46,989 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 59 treesize of output 45 [2022-01-18 02:17:48,704 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 02:17:48,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 13 [2022-01-18 02:17:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:17:49,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:17:50,628 WARN L838 $PredicateComparison]: unable to prove that (or (< c_~start~0 0) (and (forall ((v_ArrVal_542 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_542 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base)) (.cse1 (* c_~start~0 4))) (<= (select .cse0 (+ .cse1 c_~queue~0.offset)) (select .cse0 (+ .cse1 c_~queue~0.offset 4)))))) (<= c_~n~0 c_~start~0)) is different from false [2022-01-18 02:17:53,817 INFO L353 Elim1Store]: treesize reduction 89, result has 67.0 percent of original size [2022-01-18 02:17:53,817 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 154 treesize of output 253 [2022-01-18 02:17:53,839 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 58 treesize of output 52 [2022-01-18 02:17:53,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:17:53,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 39 [2022-01-18 02:18:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 6 not checked. [2022-01-18 02:18:09,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783196619] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:18:09,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:18:09,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 36, 37] total 107 [2022-01-18 02:18:09,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921457711] [2022-01-18 02:18:09,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:18:09,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-18 02:18:09,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:18:09,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-18 02:18:09,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=10300, Unknown=7, NotChecked=208, Total=11342 [2022-01-18 02:18:09,890 INFO L87 Difference]: Start difference. First operand 3144 states and 8188 transitions. Second operand has 107 states, 107 states have (on average 4.607476635514018) internal successors, (493), 107 states have internal predecessors, (493), 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) [2022-01-18 02:18:47,450 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< c_~start~0 0)) (.cse1 (and (forall ((v_ArrVal_542 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_542 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base)) (.cse6 (* c_~start~0 4))) (<= (select .cse5 (+ .cse6 c_~queue~0.offset)) (select .cse5 (+ .cse6 c_~queue~0.offset 4))))))) (.cse4 (<= c_~n~0 c_~start~0))) (and (or (not (< c_~end~0 c_~n~0)) .cse0 .cse1 (not (<= 0 c_~end~0)) (forall ((v_~i~0_50 Int)) (let ((.cse3 (select |c_#memory_int| c_~A~0.base))) (let ((.cse2 (select .cse3 (+ (* v_~i~0_50 4) c_~A~0.offset)))) (or (< .cse2 (select .cse3 (+ c_~A~0.offset (* c_~i~0 4)))) (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse2)))))) .cse4) (or .cse0 .cse1 .cse4))) is different from false [2022-01-18 02:18:47,548 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< c_~start~0 0)) (.cse1 (and (forall ((v_ArrVal_542 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_542 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base)) (.cse5 (* c_~start~0 4))) (<= (select .cse4 (+ .cse5 c_~queue~0.offset)) (select .cse4 (+ .cse5 c_~queue~0.offset 4))))))) (.cse2 (<= c_~n~0 c_~start~0))) (and (or .cse0 .cse1 .cse2) (or (not (< c_~end~0 c_~n~0)) (forall ((~i~0 Int)) (let ((.cse3 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* ~i~0 4))))) (or (< .cse3 |c_thread1Thread1of1ForFork0_#t~mem5#1|) (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse3))))) .cse0 .cse1 (not (<= 0 c_~end~0)) .cse2))) is different from false [2022-01-18 02:18:47,568 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< c_~start~0 0)) (.cse1 (and (forall ((v_ArrVal_542 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_542 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_542) c_~queue~0.base)) (.cse5 (* c_~start~0 4))) (<= (select .cse4 (+ .cse5 c_~queue~0.offset)) (select .cse4 (+ .cse5 c_~queue~0.offset 4))))))) (.cse2 (<= c_~n~0 c_~start~0))) (and (or .cse0 .cse1 .cse2) (or (not (< c_~end~0 c_~n~0)) .cse0 .cse1 (not (<= 0 c_~end~0)) (forall ((~i~0 Int)) (let ((.cse3 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* ~i~0 4))))) (or (< .cse3 c_~last~0) (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse3))))) .cse2))) is different from false [2022-01-18 02:18:48,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:18:48,575 INFO L93 Difference]: Finished difference Result 8303 states and 21603 transitions. [2022-01-18 02:18:48,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-18 02:18:48,576 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 4.607476635514018) internal successors, (493), 107 states have internal predecessors, (493), 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 188 [2022-01-18 02:18:48,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:18:48,588 INFO L225 Difference]: With dead ends: 8303 [2022-01-18 02:18:48,588 INFO L226 Difference]: Without dead ends: 8294 [2022-01-18 02:18:48,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 335 SyntacticMatches, 32 SemanticMatches, 199 ConstructedPredicates, 4 IntricatePredicates, 4 DeprecatedPredicates, 12870 ImplicationChecksByTransitivity, 47.4s TimeCoverageRelationStatistics Valid=4135, Invalid=34469, Unknown=24, NotChecked=1572, Total=40200 [2022-01-18 02:18:48,591 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 5308 mSDsluCounter, 10757 mSDsCounter, 0 mSdLazyCounter, 3232 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 10518 SdHoareTripleChecker+Invalid, 6553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 3232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2992 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:18:48,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5308 Valid, 10518 Invalid, 6553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 3232 Invalid, 0 Unknown, 2992 Unchecked, 4.8s Time] [2022-01-18 02:18:48,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8294 states. [2022-01-18 02:18:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8294 to 4526. [2022-01-18 02:18:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4526 states, 4525 states have (on average 2.5608839779005526) internal successors, (11588), 4525 states have internal predecessors, (11588), 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) [2022-01-18 02:18:48,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 11588 transitions. [2022-01-18 02:18:48,691 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 11588 transitions. Word has length 188 [2022-01-18 02:18:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:18:48,691 INFO L470 AbstractCegarLoop]: Abstraction has 4526 states and 11588 transitions. [2022-01-18 02:18:48,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 4.607476635514018) internal successors, (493), 107 states have internal predecessors, (493), 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) [2022-01-18 02:18:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 11588 transitions. [2022-01-18 02:18:48,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-18 02:18:48,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:18:48,703 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:18:48,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 02:18:48,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:48,909 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:18:48,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:18:48,909 INFO L85 PathProgramCache]: Analyzing trace with hash 21361953, now seen corresponding path program 12 times [2022-01-18 02:18:48,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:18:48,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67395315] [2022-01-18 02:18:48,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:18:48,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:18:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:18:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:18:52,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:18:52,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67395315] [2022-01-18 02:18:52,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67395315] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:18:52,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53527210] [2022-01-18 02:18:52,404 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:18:52,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:18:52,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:18:52,405 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:18:52,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 02:18:52,514 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:18:52,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:18:52,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 79 conjunts are in the unsatisfiable core [2022-01-18 02:18:52,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:18:52,549 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 [2022-01-18 02:18:53,032 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:18:53,032 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 11 treesize of output 11 [2022-01-18 02:18:59,851 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-01-18 02:18:59,852 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 75 [2022-01-18 02:18:59,894 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:18:59,894 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 60 treesize of output 46 [2022-01-18 02:19:01,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:19:01,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:19:01,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:19:01,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:19:01,633 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:19:01,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 16 [2022-01-18 02:19:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:19:01,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:19:02,899 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_584 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_584 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base)) (.cse1 (* c_~start~0 4))) (<= (select .cse0 (+ .cse1 c_~queue~0.offset)) (select .cse0 (+ .cse1 c_~queue~0.offset 4)))))) is different from false [2022-01-18 02:19:05,141 INFO L353 Elim1Store]: treesize reduction 93, result has 66.2 percent of original size [2022-01-18 02:19:05,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 155 treesize of output 254 [2022-01-18 02:19:05,153 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 58 treesize of output 52 [2022-01-18 02:19:05,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:19:05,163 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 39 [2022-01-18 02:19:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 6 not checked. [2022-01-18 02:19:16,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53527210] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:19:16,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:19:16,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 37, 36] total 86 [2022-01-18 02:19:16,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077299312] [2022-01-18 02:19:16,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:19:16,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 02:19:16,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:19:16,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 02:19:16,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=736, Invalid=6407, Unknown=1, NotChecked=166, Total=7310 [2022-01-18 02:19:16,860 INFO L87 Difference]: Start difference. First operand 4526 states and 11588 transitions. Second operand has 86 states, 86 states have (on average 4.6395348837209305) internal successors, (399), 86 states have internal predecessors, (399), 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) [2022-01-18 02:19:35,168 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_584 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset))))) (.cse1 (not (= (mod c_~ok~0 256) 0))) (.cse2 (forall ((v_ArrVal_584 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base)) (.cse6 (* c_~start~0 4))) (<= (select .cse5 (+ .cse6 c_~queue~0.offset)) (select .cse5 (+ .cse6 c_~queue~0.offset 4))))))) (and .cse0 .cse1 .cse2 (or (<= c_~n~0 c_~end~0) (< c_~end~0 0) (and .cse0 .cse1 .cse2) (forall ((v_~i~0_54 Int)) (let ((.cse4 (select |c_#memory_int| c_~A~0.base))) (let ((.cse3 (select .cse4 (+ c_~A~0.offset (* v_~i~0_54 4))))) (or (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse3)) (< .cse3 (select .cse4 (+ c_~A~0.offset (* c_~i~0 4))))))))))) is different from false [2022-01-18 02:19:35,518 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_584 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset))))) (.cse1 (not (= (mod c_~ok~0 256) 0))) (.cse2 (forall ((v_ArrVal_584 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base)) (.cse5 (* c_~start~0 4))) (<= (select .cse4 (+ .cse5 c_~queue~0.offset)) (select .cse4 (+ .cse5 c_~queue~0.offset 4))))))) (and .cse0 .cse1 .cse2 (or (<= c_~n~0 c_~end~0) (< c_~end~0 0) (forall ((~i~0 Int)) (let ((.cse3 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* ~i~0 4))))) (or (< .cse3 |c_thread1Thread1of1ForFork0_#t~mem5#1|) (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse3))))) (and .cse0 .cse1 .cse2)))) is different from false [2022-01-18 02:19:35,545 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_584 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset))))) (.cse1 (not (= (mod c_~ok~0 256) 0))) (.cse2 (forall ((v_ArrVal_584 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_584) c_~queue~0.base)) (.cse5 (* c_~start~0 4))) (<= (select .cse4 (+ .cse5 c_~queue~0.offset)) (select .cse4 (+ .cse5 c_~queue~0.offset 4))))))) (and (or (<= c_~n~0 c_~end~0) (< c_~end~0 0) (and .cse0 .cse1 .cse2) (forall ((~i~0 Int)) (let ((.cse3 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* ~i~0 4))))) (or (< .cse3 c_~last~0) (not (= (select (select |c_#memory_int| c_~queue~0.base) (+ (* c_~end~0 4) c_~queue~0.offset)) .cse3)))))) .cse0 .cse1 .cse2)) is different from false [2022-01-18 02:19:39,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:19:39,986 INFO L93 Difference]: Finished difference Result 9927 states and 25976 transitions. [2022-01-18 02:19:39,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-18 02:19:39,987 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.6395348837209305) internal successors, (399), 86 states have internal predecessors, (399), 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 188 [2022-01-18 02:19:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:19:40,002 INFO L225 Difference]: With dead ends: 9927 [2022-01-18 02:19:40,002 INFO L226 Difference]: Without dead ends: 9918 [2022-01-18 02:19:40,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 342 SyntacticMatches, 20 SemanticMatches, 176 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 10505 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=3458, Invalid=26647, Unknown=13, NotChecked=1388, Total=31506 [2022-01-18 02:19:40,005 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 2796 mSDsluCounter, 9148 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2796 SdHoareTripleChecker+Valid, 8914 SdHoareTripleChecker+Invalid, 6238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3412 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:19:40,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2796 Valid, 8914 Invalid, 6238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2635 Invalid, 0 Unknown, 3412 Unchecked, 4.0s Time] [2022-01-18 02:19:40,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9918 states. [2022-01-18 02:19:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9918 to 5424. [2022-01-18 02:19:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5423 states have (on average 2.5718237138115434) internal successors, (13947), 5423 states have internal predecessors, (13947), 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) [2022-01-18 02:19:40,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 13947 transitions. [2022-01-18 02:19:40,170 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 13947 transitions. Word has length 188 [2022-01-18 02:19:40,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:19:40,171 INFO L470 AbstractCegarLoop]: Abstraction has 5424 states and 13947 transitions. [2022-01-18 02:19:40,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.6395348837209305) internal successors, (399), 86 states have internal predecessors, (399), 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) [2022-01-18 02:19:40,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 13947 transitions. [2022-01-18 02:19:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-18 02:19:40,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:19:40,181 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:19:40,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-18 02:19:40,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-01-18 02:19:40,382 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:19:40,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:19:40,382 INFO L85 PathProgramCache]: Analyzing trace with hash -545428089, now seen corresponding path program 13 times [2022-01-18 02:19:40,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:19:40,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150359460] [2022-01-18 02:19:40,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:19:40,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:19:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:19:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:19:44,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:19:44,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150359460] [2022-01-18 02:19:44,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150359460] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:19:44,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834637273] [2022-01-18 02:19:44,260 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:19:44,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:19:44,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:19:44,262 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:19:44,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 02:19:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:19:44,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-18 02:19:44,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:19:44,413 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 [2022-01-18 02:19:45,381 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:19:45,381 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 11 treesize of output 11 [2022-01-18 02:19:52,622 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-01-18 02:19:52,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 74 [2022-01-18 02:19:52,653 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:19:52,654 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 59 treesize of output 45 [2022-01-18 02:19:54,066 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 02:19:54,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 13 [2022-01-18 02:19:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:19:54,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:19:55,777 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~start~0 1))) (or (< .cse0 0) (<= c_~n~0 .cse0) (and (forall ((v_ArrVal_626 (Array Int Int))) (<= c_~v_old~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_626) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)))) (not (= (mod c_~ok~0 256) 0)) (forall ((v_ArrVal_626 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_626) c_~queue~0.base)) (.cse2 (* c_~start~0 4))) (<= (select .cse1 (+ .cse2 c_~queue~0.offset)) (select .cse1 (+ .cse2 c_~queue~0.offset 4)))))))) is different from false [2022-01-18 02:19:59,045 INFO L353 Elim1Store]: treesize reduction 89, result has 67.0 percent of original size [2022-01-18 02:19:59,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 154 treesize of output 253 [2022-01-18 02:19:59,065 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 58 treesize of output 52 [2022-01-18 02:19:59,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:19:59,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 39 [2022-01-18 02:20:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 6 not checked. [2022-01-18 02:20:29,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834637273] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:20:29,960 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:20:29,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 36, 37] total 99 [2022-01-18 02:20:29,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680723104] [2022-01-18 02:20:29,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:20:29,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-01-18 02:20:29,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:20:29,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-01-18 02:20:29,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=8553, Unknown=7, NotChecked=192, Total=9702 [2022-01-18 02:20:29,962 INFO L87 Difference]: Start difference. First operand 5424 states and 13947 transitions. Second operand has 99 states, 99 states have (on average 4.898989898989899) internal successors, (485), 99 states have internal predecessors, (485), 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) [2022-01-18 02:21:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:21:19,180 INFO L93 Difference]: Finished difference Result 15870 states and 41887 transitions. [2022-01-18 02:21:19,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-18 02:21:19,181 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 4.898989898989899) internal successors, (485), 99 states have internal predecessors, (485), 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 188 [2022-01-18 02:21:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:21:19,244 INFO L225 Difference]: With dead ends: 15870 [2022-01-18 02:21:19,244 INFO L226 Difference]: Without dead ends: 15657 [2022-01-18 02:21:19,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 339 SyntacticMatches, 41 SemanticMatches, 201 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 15243 ImplicationChecksByTransitivity, 56.0s TimeCoverageRelationStatistics Valid=4274, Invalid=36206, Unknown=126, NotChecked=400, Total=41006 [2022-01-18 02:21:19,246 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 3008 mSDsluCounter, 10901 mSDsCounter, 0 mSdLazyCounter, 3239 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3008 SdHoareTripleChecker+Valid, 10460 SdHoareTripleChecker+Invalid, 9125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 3239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5707 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:21:19,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3008 Valid, 10460 Invalid, 9125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 3239 Invalid, 0 Unknown, 5707 Unchecked, 5.3s Time] [2022-01-18 02:21:19,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15657 states. [2022-01-18 02:21:19,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15657 to 6247. [2022-01-18 02:21:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6247 states, 6246 states have (on average 2.61831572206212) internal successors, (16354), 6246 states have internal predecessors, (16354), 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) [2022-01-18 02:21:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6247 states to 6247 states and 16354 transitions. [2022-01-18 02:21:19,389 INFO L78 Accepts]: Start accepts. Automaton has 6247 states and 16354 transitions. Word has length 188 [2022-01-18 02:21:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:21:19,389 INFO L470 AbstractCegarLoop]: Abstraction has 6247 states and 16354 transitions. [2022-01-18 02:21:19,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 4.898989898989899) internal successors, (485), 99 states have internal predecessors, (485), 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) [2022-01-18 02:21:19,390 INFO L276 IsEmpty]: Start isEmpty. Operand 6247 states and 16354 transitions. [2022-01-18 02:21:19,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-18 02:21:19,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:21:19,400 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:21:19,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 02:21:19,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:21:19,602 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:21:19,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:21:19,603 INFO L85 PathProgramCache]: Analyzing trace with hash -752671369, now seen corresponding path program 14 times [2022-01-18 02:21:19,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:21:19,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261160359] [2022-01-18 02:21:19,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:21:19,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:21:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:21:22,794 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:21:22,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:21:22,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261160359] [2022-01-18 02:21:22,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261160359] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:21:22,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258888050] [2022-01-18 02:21:22,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:21:22,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:21:22,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:21:22,797 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:21:22,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 02:21:22,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:21:22,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:21:22,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 85 conjunts are in the unsatisfiable core [2022-01-18 02:21:22,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:21:24,047 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 [2022-01-18 02:21:25,127 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 02:21:26,721 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:21:26,721 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 11 treesize of output 11 [2022-01-18 02:21:27,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:21:27,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:21:28,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:21:31,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:21:31,563 INFO L353 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-01-18 02:21:31,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 74 [2022-01-18 02:21:31,599 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:21:31,599 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 59 treesize of output 45 [2022-01-18 02:21:33,554 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 02:21:33,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 13 [2022-01-18 02:21:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 02:21:33,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:24:35,292 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:24:35,293 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 295 treesize of output 187 [2022-01-18 02:24:35,717 INFO L353 Elim1Store]: treesize reduction 66, result has 82.3 percent of original size [2022-01-18 02:24:35,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 4401 treesize of output 4151 [2022-01-18 02:24:35,990 INFO L353 Elim1Store]: treesize reduction 51, result has 79.3 percent of original size [2022-01-18 02:24:35,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 4151 treesize of output 3933 [2022-01-18 02:24:36,332 INFO L353 Elim1Store]: treesize reduction 51, result has 79.3 percent of original size [2022-01-18 02:24:36,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 3933 treesize of output 3303 [2022-01-18 02:24:36,463 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 1635 treesize of output 1443 [2022-01-18 02:24:36,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:24:36,553 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1443 treesize of output 1235 Received shutdown request... [2022-01-18 02:26:00,060 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-18 02:26:00,062 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 02:26:00,074 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:26:00,075 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:26:00,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-18 02:26:00,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:26:00,263 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 189 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 20ms.. [2022-01-18 02:26:00,264 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 02:26:00,264 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 02:26:00,266 INFO L732 BasicCegarLoop]: Path program histogram: [14, 2, 1, 1, 1, 1, 1, 1] [2022-01-18 02:26:00,268 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 02:26:00,268 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 02:26:00,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 02:26:00 BasicIcfg [2022-01-18 02:26:00,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 02:26:00,270 INFO L158 Benchmark]: Toolchain (without parser) took 774317.74ms. Allocated memory was 350.2MB in the beginning and 975.2MB in the end (delta: 625.0MB). Free memory was 297.2MB in the beginning and 514.5MB in the end (delta: -217.2MB). Peak memory consumption was 634.2MB. Max. memory is 16.0GB. [2022-01-18 02:26:00,270 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 350.2MB. Free memory is still 314.3MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 02:26:00,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.46ms. Allocated memory is still 350.2MB. Free memory was 297.1MB in the beginning and 322.5MB in the end (delta: -25.4MB). Peak memory consumption was 14.1MB. Max. memory is 16.0GB. [2022-01-18 02:26:00,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.54ms. Allocated memory is still 350.2MB. Free memory was 322.5MB in the beginning and 320.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 02:26:00,270 INFO L158 Benchmark]: Boogie Preprocessor took 38.65ms. Allocated memory is still 350.2MB. Free memory was 320.4MB in the beginning and 319.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 02:26:00,271 INFO L158 Benchmark]: RCFGBuilder took 491.95ms. Allocated memory is still 350.2MB. Free memory was 318.7MB in the beginning and 297.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2022-01-18 02:26:00,271 INFO L158 Benchmark]: TraceAbstraction took 773507.64ms. Allocated memory was 350.2MB in the beginning and 975.2MB in the end (delta: 625.0MB). Free memory was 297.3MB in the beginning and 514.5MB in the end (delta: -217.2MB). Peak memory consumption was 634.8MB. Max. memory is 16.0GB. [2022-01-18 02:26:00,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 350.2MB. Free memory is still 314.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 240.46ms. Allocated memory is still 350.2MB. Free memory was 297.1MB in the beginning and 322.5MB in the end (delta: -25.4MB). Peak memory consumption was 14.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.54ms. Allocated memory is still 350.2MB. Free memory was 322.5MB in the beginning and 320.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.65ms. Allocated memory is still 350.2MB. Free memory was 320.4MB in the beginning and 319.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 491.95ms. Allocated memory is still 350.2MB. Free memory was 318.7MB in the beginning and 297.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 773507.64ms. Allocated memory was 350.2MB in the beginning and 975.2MB in the end (delta: 625.0MB). Free memory was 297.3MB in the beginning and 514.5MB in the end (delta: -217.2MB). Peak memory consumption was 634.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 189 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 20ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 189 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 20ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 189 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 20ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 199 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 773.4s, OverallIterations: 22, TraceHistogramMax: 3, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.2s, AutomataDifference: 227.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47541 SdHoareTripleChecker+Valid, 32.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47541 mSDsluCounter, 96373 SdHoareTripleChecker+Invalid, 29.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 29685 IncrementalHoareTripleChecker+Unchecked, 99611 mSDsCounter, 3110 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36026 IncrementalHoareTripleChecker+Invalid, 68821 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3110 mSolverCounterUnsat, 3940 mSDtfsCounter, 36026 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6713 GetRequests, 4409 SyntacticMatches, 207 SemanticMatches, 2097 ConstructedPredicates, 9 IntricatePredicates, 7 DeprecatedPredicates, 138333 ImplicationChecksByTransitivity, 253.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6247occurred in iteration=21, InterpolantAutomatonStates: 1369, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 21 MinimizatonAttempts, 56030 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 257.1s InterpolantComputationTime, 5814 NumberOfCodeBlocks, 5784 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 8159 ConstructedInterpolants, 709 QuantifiedInterpolants, 163774 SizeOfPredicates, 498 NumberOfNonLiveVariables, 5246 ConjunctsInSsa, 710 ConjunctsInUnsatCore, 49 InterpolantComputations, 7 PerfectInterpolantSequences, 333/796 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown