/usr/bin/java -Xmx8000000000 -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-send-receive-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-01 16:11:55,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-01 16:11:55,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-01 16:11:55,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-01 16:11:55,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-01 16:11:55,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-01 16:11:55,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-01 16:11:55,763 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 [2022-03-01 16:11:55,781 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-01 16:11:55,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-01 16:11:55,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-01 16:11:55,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-01 16:11:55,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-01 16:11:55,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-01 16:11:55,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-01 16:11:55,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-01 16:11:55,783 INFO L138 SettingsManager]: * Use SBE=true [2022-03-01 16:11:55,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-01 16:11:55,783 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-01 16:11:55,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-01 16:11:55,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-01 16:11:55,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-01 16:11:55,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-01 16:11:55,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-01 16:11:55,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-01 16:11:55,784 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-01 16:11:55,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-01 16:11:55,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-01 16:11:55,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-01 16:11:55,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-01 16:11:55,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-01 16:11:55,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-01 16:11:55,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-01 16:11:55,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 16:11:55,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-01 16:11:55,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-01 16:11:55,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-01 16:11:55,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-01 16:11:55,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-01 16:11:55,786 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-01 16:11:55,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-01 16:11:55,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-01 16:11:56,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-01 16:11:56,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-01 16:11:56,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-01 16:11:56,025 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-01 16:11:56,026 INFO L275 PluginConnector]: CDTParser initialized [2022-03-01 16:11:56,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-03-01 16:11:56,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd57db70/f3942d6b038248529324c733e5db001f/FLAG9ec43abf6 [2022-03-01 16:11:56,539 INFO L306 CDTParser]: Found 1 translation units. [2022-03-01 16:11:56,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-03-01 16:11:56,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd57db70/f3942d6b038248529324c733e5db001f/FLAG9ec43abf6 [2022-03-01 16:11:56,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd57db70/f3942d6b038248529324c733e5db001f [2022-03-01 16:11:56,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-01 16:11:56,559 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-01 16:11:56,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-01 16:11:56,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-01 16:11:56,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-01 16:11:56,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 04:11:56" (1/1) ... [2022-03-01 16:11:56,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e217b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56, skipping insertion in model container [2022-03-01 16:11:56,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.03 04:11:56" (1/1) ... [2022-03-01 16:11:56,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-01 16:11:56,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-01 16:11:56,760 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-send-receive-alt.wvr.c[2650,2663] [2022-03-01 16:11:56,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 16:11:56,781 INFO L203 MainTranslator]: Completed pre-run [2022-03-01 16:11:56,804 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-send-receive-alt.wvr.c[2650,2663] [2022-03-01 16:11:56,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-01 16:11:56,821 INFO L208 MainTranslator]: Completed translation [2022-03-01 16:11:56,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56 WrapperNode [2022-03-01 16:11:56,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-01 16:11:56,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-01 16:11:56,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-01 16:11:56,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-01 16:11:56,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56" (1/1) ... [2022-03-01 16:11:56,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56" (1/1) ... [2022-03-01 16:11:56,850 INFO L137 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 142 [2022-03-01 16:11:56,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-01 16:11:56,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-01 16:11:56,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-01 16:11:56,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-01 16:11:56,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56" (1/1) ... [2022-03-01 16:11:56,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56" (1/1) ... [2022-03-01 16:11:56,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56" (1/1) ... [2022-03-01 16:11:56,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56" (1/1) ... [2022-03-01 16:11:56,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56" (1/1) ... [2022-03-01 16:11:56,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56" (1/1) ... [2022-03-01 16:11:56,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56" (1/1) ... [2022-03-01 16:11:56,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-01 16:11:56,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-01 16:11:56,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-01 16:11:56,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-01 16:11:56,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56" (1/1) ... [2022-03-01 16:11:56,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-01 16:11:56,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:11:56,901 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) [2022-03-01 16:11:56,931 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 [2022-03-01 16:11:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-01 16:11:56,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-01 16:11:56,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-01 16:11:56,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-01 16:11:56,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-01 16:11:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-01 16:11:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-01 16:11:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-01 16:11:56,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-01 16:11:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-01 16:11:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-01 16:11:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-01 16:11:56,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-01 16:11:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-01 16:11:56,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-01 16:11:56,951 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-01 16:11:57,062 INFO L234 CfgBuilder]: Building ICFG [2022-03-01 16:11:57,064 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-01 16:11:57,287 INFO L275 CfgBuilder]: Performing block encoding [2022-03-01 16:11:57,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-01 16:11:57,368 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-01 16:11:57,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 04:11:57 BoogieIcfgContainer [2022-03-01 16:11:57,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-01 16:11:57,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-01 16:11:57,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-01 16:11:57,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-01 16:11:57,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.03 04:11:56" (1/3) ... [2022-03-01 16:11:57,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cac3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 04:11:57, skipping insertion in model container [2022-03-01 16:11:57,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.03 04:11:56" (2/3) ... [2022-03-01 16:11:57,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cac3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.03 04:11:57, skipping insertion in model container [2022-03-01 16:11:57,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.03 04:11:57" (3/3) ... [2022-03-01 16:11:57,376 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2022-03-01 16:11:57,380 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-01 16:11:57,380 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-01 16:11:57,380 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-01 16:11:57,381 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-01 16:11:57,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,425 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,425 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,425 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,425 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,425 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,425 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,426 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,426 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,426 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,426 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,426 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,426 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,427 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,432 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,433 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-01 16:11:57,436 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-01 16:11:57,467 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-01 16:11:57,473 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, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-01 16:11:57,473 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-01 16:11:57,483 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 129 places, 133 transitions, 282 flow [2022-03-01 16:11:57,564 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 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) [2022-03-01 16:11:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 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) [2022-03-01 16:11:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-01 16:11:57,587 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:57,588 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] [2022-03-01 16:11:57,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:11:57,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:57,593 INFO L85 PathProgramCache]: Analyzing trace with hash -386855673, now seen corresponding path program 1 times [2022-03-01 16:11:57,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:57,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535261604] [2022-03-01 16:11:57,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:57,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:11:57,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:57,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535261604] [2022-03-01 16:11:57,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535261604] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:11:57,799 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:11:57,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-01 16:11:57,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228190103] [2022-03-01 16:11:57,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:11:57,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-01 16:11:57,806 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:11:57,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-01 16:11:57,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-01 16:11:57,836 INFO L87 Difference]: Start difference. First operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 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 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-03-01 16:11:57,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:11:57,886 INFO L93 Difference]: Finished difference Result 676 states and 1686 transitions. [2022-03-01 16:11:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-01 16:11:57,892 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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 86 [2022-03-01 16:11:57,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:11:57,917 INFO L225 Difference]: With dead ends: 676 [2022-03-01 16:11:57,917 INFO L226 Difference]: Without dead ends: 642 [2022-03-01 16:11:57,918 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 [2022-03-01 16:11:57,921 INFO L933 BasicCegarLoop]: 108 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, 108 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 [2022-03-01 16:11:57,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:11:57,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-03-01 16:11:57,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2022-03-01 16:11:57,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 2.49609984399376) internal successors, (1600), 641 states have internal predecessors, (1600), 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) [2022-03-01 16:11:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1600 transitions. [2022-03-01 16:11:57,994 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1600 transitions. Word has length 86 [2022-03-01 16:11:57,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:11:57,995 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 1600 transitions. [2022-03-01 16:11:57,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-03-01 16:11:57,995 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1600 transitions. [2022-03-01 16:11:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-01 16:11:58,000 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:58,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:11:58,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-01 16:11:58,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:11:58,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:58,001 INFO L85 PathProgramCache]: Analyzing trace with hash -897208069, now seen corresponding path program 1 times [2022-03-01 16:11:58,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:58,002 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18019937] [2022-03-01 16:11:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:58,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:11:58,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:58,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18019937] [2022-03-01 16:11:58,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18019937] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:11:58,208 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:11:58,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-01 16:11:58,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986670798] [2022-03-01 16:11:58,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:11:58,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-01 16:11:58,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:11:58,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-01 16:11:58,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-01 16:11:58,211 INFO L87 Difference]: Start difference. First operand 642 states and 1600 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2022-03-01 16:11:58,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:11:58,291 INFO L93 Difference]: Finished difference Result 1217 states and 3132 transitions. [2022-03-01 16:11:58,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-01 16:11:58,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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 88 [2022-03-01 16:11:58,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:11:58,299 INFO L225 Difference]: With dead ends: 1217 [2022-03-01 16:11:58,299 INFO L226 Difference]: Without dead ends: 864 [2022-03-01 16:11:58,299 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 [2022-03-01 16:11:58,300 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:11:58,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 344 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:11:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-03-01 16:11:58,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 716. [2022-03-01 16:11:58,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 2.521678321678322) internal successors, (1803), 715 states have internal predecessors, (1803), 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) [2022-03-01 16:11:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1803 transitions. [2022-03-01 16:11:58,349 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1803 transitions. Word has length 88 [2022-03-01 16:11:58,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:11:58,352 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1803 transitions. [2022-03-01 16:11:58,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 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) [2022-03-01 16:11:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1803 transitions. [2022-03-01 16:11:58,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-01 16:11:58,357 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:58,358 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] [2022-03-01 16:11:58,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-01 16:11:58,359 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:11:58,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:58,359 INFO L85 PathProgramCache]: Analyzing trace with hash -672454208, now seen corresponding path program 1 times [2022-03-01 16:11:58,360 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:58,360 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271681043] [2022-03-01 16:11:58,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:58,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:11:58,525 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:58,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271681043] [2022-03-01 16:11:58,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271681043] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:11:58,526 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:11:58,526 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 16:11:58,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678449611] [2022-03-01 16:11:58,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:11:58,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 16:11:58,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:11:58,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 16:11:58,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 16:11:58,528 INFO L87 Difference]: Start difference. First operand 716 states and 1803 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-03-01 16:11:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:11:58,555 INFO L93 Difference]: Finished difference Result 843 states and 2119 transitions. [2022-03-01 16:11:58,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 16:11:58,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2022-03-01 16:11:58,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:11:58,560 INFO L225 Difference]: With dead ends: 843 [2022-03-01 16:11:58,560 INFO L226 Difference]: Without dead ends: 795 [2022-03-01 16:11:58,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 16:11:58,561 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:11:58,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 147 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:11:58,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-03-01 16:11:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2022-03-01 16:11:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 2.522670025188917) internal successors, (2003), 794 states have internal predecessors, (2003), 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) [2022-03-01 16:11:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2003 transitions. [2022-03-01 16:11:58,584 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2003 transitions. Word has length 91 [2022-03-01 16:11:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:11:58,585 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 2003 transitions. [2022-03-01 16:11:58,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2022-03-01 16:11:58,585 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2003 transitions. [2022-03-01 16:11:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-01 16:11:58,587 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:58,588 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] [2022-03-01 16:11:58,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-01 16:11:58,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:11:58,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:58,589 INFO L85 PathProgramCache]: Analyzing trace with hash 855435936, now seen corresponding path program 1 times [2022-03-01 16:11:58,589 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:58,589 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189608838] [2022-03-01 16:11:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:58,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:11:58,762 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:58,762 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189608838] [2022-03-01 16:11:58,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189608838] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:11:58,763 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:11:58,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-01 16:11:58,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734971747] [2022-03-01 16:11:58,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:11:58,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-01 16:11:58,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:11:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-01 16:11:58,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-01 16:11:58,765 INFO L87 Difference]: Start difference. First operand 795 states and 2003 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2022-03-01 16:11:58,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:11:58,972 INFO L93 Difference]: Finished difference Result 924 states and 2269 transitions. [2022-03-01 16:11:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-01 16:11:58,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 102 [2022-03-01 16:11:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:11:58,976 INFO L225 Difference]: With dead ends: 924 [2022-03-01 16:11:58,976 INFO L226 Difference]: Without dead ends: 801 [2022-03-01 16:11:58,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-03-01 16:11:58,978 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 269 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:11:58,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 484 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:11:58,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-03-01 16:11:59,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 796. [2022-03-01 16:11:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 2.520754716981132) internal successors, (2004), 795 states have internal predecessors, (2004), 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) [2022-03-01 16:11:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2004 transitions. [2022-03-01 16:11:59,009 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2004 transitions. Word has length 102 [2022-03-01 16:11:59,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:11:59,009 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 2004 transitions. [2022-03-01 16:11:59,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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) [2022-03-01 16:11:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2004 transitions. [2022-03-01 16:11:59,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-01 16:11:59,012 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:11:59,012 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] [2022-03-01 16:11:59,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-01 16:11:59,013 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:11:59,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:11:59,013 INFO L85 PathProgramCache]: Analyzing trace with hash -881340959, now seen corresponding path program 1 times [2022-03-01 16:11:59,014 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:11:59,014 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891201702] [2022-03-01 16:11:59,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:59,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:11:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:11:59,238 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:11:59,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891201702] [2022-03-01 16:11:59,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891201702] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:11:59,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60859374] [2022-03-01 16:11:59,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:11:59,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:11:59,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:11:59,241 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) [2022-03-01 16:11:59,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-01 16:11:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:11:59,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-01 16:11:59,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:00,235 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 [2022-03-01 16:12:00,608 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 [2022-03-01 16:12:00,705 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 [2022-03-01 16:12:00,964 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 [2022-03-01 16:12:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:12:01,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:02,428 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:02,428 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 96 treesize of output 72 [2022-03-01 16:12:02,441 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:02,443 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 494 treesize of output 462 [2022-03-01 16:12:02,455 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:02,456 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 446 treesize of output 426 [2022-03-01 16:12:02,470 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:02,470 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 410 treesize of output 354 [2022-03-01 16:12:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:12:03,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60859374] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:03,778 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:03,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 23] total 49 [2022-03-01 16:12:03,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892896199] [2022-03-01 16:12:03,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:03,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-01 16:12:03,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:03,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-01 16:12:03,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=1741, Unknown=50, NotChecked=0, Total=2352 [2022-03-01 16:12:03,781 INFO L87 Difference]: Start difference. First operand 796 states and 2004 transitions. Second operand has 49 states, 49 states have (on average 5.673469387755102) internal successors, (278), 49 states have internal predecessors, (278), 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) [2022-03-01 16:12:04,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:04,726 INFO L93 Difference]: Finished difference Result 1865 states and 4861 transitions. [2022-03-01 16:12:04,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-01 16:12:04,726 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.673469387755102) internal successors, (278), 49 states have internal predecessors, (278), 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 109 [2022-03-01 16:12:04,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:04,736 INFO L225 Difference]: With dead ends: 1865 [2022-03-01 16:12:04,737 INFO L226 Difference]: Without dead ends: 1831 [2022-03-01 16:12:04,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 174 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1036, Invalid=3074, Unknown=50, NotChecked=0, Total=4160 [2022-03-01 16:12:04,739 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 769 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:04,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 1916 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 478 Invalid, 0 Unknown, 91 Unchecked, 0.3s Time] [2022-03-01 16:12:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-03-01 16:12:04,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1004. [2022-03-01 16:12:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 2.5692921236291126) internal successors, (2577), 1003 states have internal predecessors, (2577), 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) [2022-03-01 16:12:04,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 2577 transitions. [2022-03-01 16:12:04,775 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 2577 transitions. Word has length 109 [2022-03-01 16:12:04,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:04,776 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 2577 transitions. [2022-03-01 16:12:04,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.673469387755102) internal successors, (278), 49 states have internal predecessors, (278), 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) [2022-03-01 16:12:04,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 2577 transitions. [2022-03-01 16:12:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-01 16:12:04,779 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:04,779 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] [2022-03-01 16:12:04,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-01 16:12:04,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:04,996 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:12:04,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:04,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1367436801, now seen corresponding path program 1 times [2022-03-01 16:12:04,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:04,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815826057] [2022-03-01 16:12:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:04,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:12:05,046 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:05,046 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815826057] [2022-03-01 16:12:05,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815826057] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:12:05,046 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:12:05,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-01 16:12:05,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511632787] [2022-03-01 16:12:05,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:12:05,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-01 16:12:05,047 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:05,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-01 16:12:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 16:12:05,048 INFO L87 Difference]: Start difference. First operand 1004 states and 2577 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2022-03-01 16:12:05,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:05,075 INFO L93 Difference]: Finished difference Result 983 states and 2495 transitions. [2022-03-01 16:12:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-01 16:12:05,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2022-03-01 16:12:05,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:05,081 INFO L225 Difference]: With dead ends: 983 [2022-03-01 16:12:05,081 INFO L226 Difference]: Without dead ends: 983 [2022-03-01 16:12:05,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-01 16:12:05,085 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 15 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:05,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 207 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:12:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-03-01 16:12:05,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 932. [2022-03-01 16:12:05,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 931 states have (on average 2.5381310418904404) internal successors, (2363), 931 states have internal predecessors, (2363), 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) [2022-03-01 16:12:05,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2363 transitions. [2022-03-01 16:12:05,109 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2363 transitions. Word has length 109 [2022-03-01 16:12:05,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:05,109 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 2363 transitions. [2022-03-01 16:12:05,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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) [2022-03-01 16:12:05,109 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2363 transitions. [2022-03-01 16:12:05,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-01 16:12:05,114 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:05,114 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] [2022-03-01 16:12:05,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-01 16:12:05,114 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:12:05,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:05,115 INFO L85 PathProgramCache]: Analyzing trace with hash -82845087, now seen corresponding path program 2 times [2022-03-01 16:12:05,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:05,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155303262] [2022-03-01 16:12:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:05,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:05,254 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:05,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155303262] [2022-03-01 16:12:05,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155303262] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:05,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658848258] [2022-03-01 16:12:05,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:12:05,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:05,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:05,256 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) [2022-03-01 16:12:05,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-01 16:12:05,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:12:05,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:12:05,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-01 16:12:05,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:05,393 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 [2022-03-01 16:12:05,889 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 16:12:05,890 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 [2022-03-01 16:12:06,085 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 15 treesize of output 11 [2022-03-01 16:12:06,430 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 [2022-03-01 16:12:06,514 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 [2022-03-01 16:12:06,711 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 [2022-03-01 16:12:06,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:12:06,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:07,924 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:07,924 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 96 treesize of output 72 [2022-03-01 16:12:07,933 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:07,933 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 232 treesize of output 224 [2022-03-01 16:12:07,943 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:07,943 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 208 treesize of output 188 [2022-03-01 16:12:07,951 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:07,951 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 172 treesize of output 170 [2022-03-01 16:12:09,269 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 [2022-03-01 16:12:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:12:09,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658848258] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:09,348 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:09,348 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 25] total 51 [2022-03-01 16:12:09,348 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120072334] [2022-03-01 16:12:09,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:09,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-01 16:12:09,349 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:09,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-01 16:12:09,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=1883, Unknown=55, NotChecked=0, Total=2550 [2022-03-01 16:12:09,351 INFO L87 Difference]: Start difference. First operand 932 states and 2363 transitions. Second operand has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 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) [2022-03-01 16:12:11,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:11,100 INFO L93 Difference]: Finished difference Result 3828 states and 10142 transitions. [2022-03-01 16:12:11,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-01 16:12:11,101 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 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 109 [2022-03-01 16:12:11,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:11,113 INFO L225 Difference]: With dead ends: 3828 [2022-03-01 16:12:11,113 INFO L226 Difference]: Without dead ends: 2560 [2022-03-01 16:12:11,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 177 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2234 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1548, Invalid=5537, Unknown=55, NotChecked=0, Total=7140 [2022-03-01 16:12:11,116 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 1194 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 608 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:11,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 2204 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 660 Invalid, 0 Unknown, 608 Unchecked, 0.4s Time] [2022-03-01 16:12:11,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-03-01 16:12:11,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1334. [2022-03-01 16:12:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 2.557389347336834) internal successors, (3409), 1333 states have internal predecessors, (3409), 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) [2022-03-01 16:12:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 3409 transitions. [2022-03-01 16:12:11,155 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 3409 transitions. Word has length 109 [2022-03-01 16:12:11,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:11,155 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 3409 transitions. [2022-03-01 16:12:11,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 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) [2022-03-01 16:12:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 3409 transitions. [2022-03-01 16:12:11,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-03-01 16:12:11,159 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:11,159 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-01 16:12:11,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-01 16:12:11,379 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,SelfDestructingSolverStorable6 [2022-03-01 16:12:11,379 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:12:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2079156415, now seen corresponding path program 3 times [2022-03-01 16:12:11,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:11,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896019363] [2022-03-01 16:12:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:11,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-01 16:12:11,486 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:11,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896019363] [2022-03-01 16:12:11,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896019363] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:11,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135654458] [2022-03-01 16:12:11,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:12:11,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:11,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:11,492 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) [2022-03-01 16:12:11,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-01 16:12:11,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-01 16:12:11,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:12:11,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-01 16:12:11,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-01 16:12:11,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-01 16:12:12,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135654458] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:12,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:12,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 17 [2022-03-01 16:12:12,133 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817492397] [2022-03-01 16:12:12,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:12,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-01 16:12:12,135 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:12,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-01 16:12:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-03-01 16:12:12,136 INFO L87 Difference]: Start difference. First operand 1334 states and 3409 transitions. Second operand has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 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) [2022-03-01 16:12:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:12,454 INFO L93 Difference]: Finished difference Result 3437 states and 8954 transitions. [2022-03-01 16:12:12,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-01 16:12:12,455 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 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 115 [2022-03-01 16:12:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:12,464 INFO L225 Difference]: With dead ends: 3437 [2022-03-01 16:12:12,464 INFO L226 Difference]: Without dead ends: 2222 [2022-03-01 16:12:12,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=750, Unknown=0, NotChecked=0, Total=1056 [2022-03-01 16:12:12,465 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 1043 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:12,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 888 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:12:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2022-03-01 16:12:12,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1591. [2022-03-01 16:12:12,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 2.69811320754717) internal successors, (4290), 1590 states have internal predecessors, (4290), 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) [2022-03-01 16:12:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 4290 transitions. [2022-03-01 16:12:12,552 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 4290 transitions. Word has length 115 [2022-03-01 16:12:12,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:12,552 INFO L470 AbstractCegarLoop]: Abstraction has 1591 states and 4290 transitions. [2022-03-01 16:12:12,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 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) [2022-03-01 16:12:12,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 4290 transitions. [2022-03-01 16:12:12,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-01 16:12:12,556 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:12,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:12:12,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-01 16:12:12,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:12,767 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:12:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:12,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1436284997, now seen corresponding path program 4 times [2022-03-01 16:12:12,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:12,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349487507] [2022-03-01 16:12:12,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:12,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-01 16:12:12,874 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:12,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349487507] [2022-03-01 16:12:12,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349487507] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-01 16:12:12,874 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-01 16:12:12,874 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-01 16:12:12,874 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456316756] [2022-03-01 16:12:12,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-01 16:12:12,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-01 16:12:12,875 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:12,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-01 16:12:12,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 16:12:12,876 INFO L87 Difference]: Start difference. First operand 1591 states and 4290 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-03-01 16:12:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:12,908 INFO L93 Difference]: Finished difference Result 2542 states and 6823 transitions. [2022-03-01 16:12:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-01 16:12:12,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 130 [2022-03-01 16:12:12,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:12,919 INFO L225 Difference]: With dead ends: 2542 [2022-03-01 16:12:12,919 INFO L226 Difference]: Without dead ends: 2542 [2022-03-01 16:12:12,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-01 16:12:12,921 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 62 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:12,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 347 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:12:12,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2022-03-01 16:12:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2281. [2022-03-01 16:12:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 2280 states have (on average 2.7092105263157893) internal successors, (6177), 2280 states have internal predecessors, (6177), 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) [2022-03-01 16:12:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 6177 transitions. [2022-03-01 16:12:12,978 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 6177 transitions. Word has length 130 [2022-03-01 16:12:12,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:12,978 INFO L470 AbstractCegarLoop]: Abstraction has 2281 states and 6177 transitions. [2022-03-01 16:12:12,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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) [2022-03-01 16:12:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 6177 transitions. [2022-03-01 16:12:12,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-01 16:12:12,984 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:12,984 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-01 16:12:12,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-01 16:12:12,984 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:12:12,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:12,985 INFO L85 PathProgramCache]: Analyzing trace with hash -997919845, now seen corresponding path program 1 times [2022-03-01 16:12:12,985 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:12,985 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273296573] [2022-03-01 16:12:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:12,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:12:13,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:13,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273296573] [2022-03-01 16:12:13,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273296573] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:13,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060328122] [2022-03-01 16:12:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:13,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:13,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:13,196 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) [2022-03-01 16:12:13,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-01 16:12:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:13,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-01 16:12:13,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:14,388 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-01 16:12:14,389 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 48 treesize of output 14 [2022-03-01 16:12:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:12:14,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:14,903 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-01 16:12:14,904 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 77 treesize of output 78 [2022-03-01 16:12:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:12:16,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060328122] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:16,213 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:16,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21, 20] total 41 [2022-03-01 16:12:16,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963683613] [2022-03-01 16:12:16,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:16,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-01 16:12:16,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-01 16:12:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1266, Unknown=0, NotChecked=0, Total=1640 [2022-03-01 16:12:16,215 INFO L87 Difference]: Start difference. First operand 2281 states and 6177 transitions. Second operand has 41 states, 41 states have (on average 7.878048780487805) internal successors, (323), 41 states have internal predecessors, (323), 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) [2022-03-01 16:12:18,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:18,309 INFO L93 Difference]: Finished difference Result 13672 states and 36888 transitions. [2022-03-01 16:12:18,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-01 16:12:18,309 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.878048780487805) internal successors, (323), 41 states have internal predecessors, (323), 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 130 [2022-03-01 16:12:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:18,358 INFO L225 Difference]: With dead ends: 13672 [2022-03-01 16:12:18,358 INFO L226 Difference]: Without dead ends: 8898 [2022-03-01 16:12:18,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 228 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1418, Invalid=6238, Unknown=0, NotChecked=0, Total=7656 [2022-03-01 16:12:18,361 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1915 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:18,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 3373 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-01 16:12:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2022-03-01 16:12:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 4847. [2022-03-01 16:12:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4847 states, 4846 states have (on average 2.73937267849773) internal successors, (13275), 4846 states have internal predecessors, (13275), 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) [2022-03-01 16:12:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 13275 transitions. [2022-03-01 16:12:18,525 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 13275 transitions. Word has length 130 [2022-03-01 16:12:18,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:18,525 INFO L470 AbstractCegarLoop]: Abstraction has 4847 states and 13275 transitions. [2022-03-01 16:12:18,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.878048780487805) internal successors, (323), 41 states have internal predecessors, (323), 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) [2022-03-01 16:12:18,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 13275 transitions. [2022-03-01 16:12:18,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-01 16:12:18,537 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:18,537 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-01 16:12:18,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-01 16:12:18,750 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 [2022-03-01 16:12:18,750 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:12:18,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:18,751 INFO L85 PathProgramCache]: Analyzing trace with hash -116894547, now seen corresponding path program 2 times [2022-03-01 16:12:18,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:18,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662408752] [2022-03-01 16:12:18,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:18,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-01 16:12:18,998 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:18,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662408752] [2022-03-01 16:12:18,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662408752] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:18,998 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618386452] [2022-03-01 16:12:18,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:12:18,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:18,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:19,000 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) [2022-03-01 16:12:19,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-01 16:12:19,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:12:19,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:12:19,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-01 16:12:19,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:19,146 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 [2022-03-01 16:12:19,569 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 16:12:19,570 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 [2022-03-01 16:12:19,904 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 15 treesize of output 11 [2022-03-01 16:12:20,199 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 [2022-03-01 16:12:20,266 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 [2022-03-01 16:12:20,698 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-01 16:12:20,698 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 48 treesize of output 14 [2022-03-01 16:12:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:12:20,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:22,565 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:12:22,566 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 185 treesize of output 125 [2022-03-01 16:12:22,607 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-03-01 16:12:22,607 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 808 treesize of output 744 [2022-03-01 16:12:22,643 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-03-01 16:12:22,644 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 706 treesize of output 588 [2022-03-01 16:12:22,683 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-03-01 16:12:22,684 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 550 treesize of output 510 [2022-03-01 16:12:25,233 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 [2022-03-01 16:12:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:12:25,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618386452] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:25,277 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:25,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 30, 28] total 59 [2022-03-01 16:12:25,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001339194] [2022-03-01 16:12:25,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:25,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-03-01 16:12:25,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:25,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-03-01 16:12:25,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=2587, Unknown=71, NotChecked=0, Total=3422 [2022-03-01 16:12:25,280 INFO L87 Difference]: Start difference. First operand 4847 states and 13275 transitions. Second operand has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 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) [2022-03-01 16:12:29,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:29,250 INFO L93 Difference]: Finished difference Result 14477 states and 39566 transitions. [2022-03-01 16:12:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-01 16:12:29,251 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 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 130 [2022-03-01 16:12:29,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:29,292 INFO L225 Difference]: With dead ends: 14477 [2022-03-01 16:12:29,292 INFO L226 Difference]: Without dead ends: 13878 [2022-03-01 16:12:29,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 217 SyntacticMatches, 5 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3428 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2045, Invalid=8799, Unknown=76, NotChecked=0, Total=10920 [2022-03-01 16:12:29,296 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 2356 mSDsluCounter, 3779 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2356 SdHoareTripleChecker+Valid, 3795 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 594 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:29,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2356 Valid, 3795 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 995 Invalid, 0 Unknown, 594 Unchecked, 0.5s Time] [2022-03-01 16:12:29,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13878 states. [2022-03-01 16:12:29,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13878 to 7145. [2022-03-01 16:12:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 7144 states have (on average 2.788073908174692) internal successors, (19918), 7144 states have internal predecessors, (19918), 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) [2022-03-01 16:12:29,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 19918 transitions. [2022-03-01 16:12:29,522 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 19918 transitions. Word has length 130 [2022-03-01 16:12:29,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:29,522 INFO L470 AbstractCegarLoop]: Abstraction has 7145 states and 19918 transitions. [2022-03-01 16:12:29,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 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) [2022-03-01 16:12:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 19918 transitions. [2022-03-01 16:12:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-03-01 16:12:29,540 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:29,541 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:12:29,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-01 16:12:29,756 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 [2022-03-01 16:12:29,756 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:12:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:29,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2097043391, now seen corresponding path program 3 times [2022-03-01 16:12:29,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:29,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822790362] [2022-03-01 16:12:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-01 16:12:29,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:29,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822790362] [2022-03-01 16:12:29,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822790362] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:29,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601245391] [2022-03-01 16:12:29,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:12:29,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:29,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:29,858 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) [2022-03-01 16:12:29,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-01 16:12:29,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-01 16:12:29,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:12:29,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-01 16:12:29,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-01 16:12:30,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:30,567 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-01 16:12:30,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601245391] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:30,568 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:30,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 10 [2022-03-01 16:12:30,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654319066] [2022-03-01 16:12:30,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:30,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-01 16:12:30,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:30,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-01 16:12:30,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-01 16:12:30,569 INFO L87 Difference]: Start difference. First operand 7145 states and 19918 transitions. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 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) [2022-03-01 16:12:30,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:30,670 INFO L93 Difference]: Finished difference Result 13384 states and 36944 transitions. [2022-03-01 16:12:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-01 16:12:30,671 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 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 140 [2022-03-01 16:12:30,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:30,708 INFO L225 Difference]: With dead ends: 13384 [2022-03-01 16:12:30,708 INFO L226 Difference]: Without dead ends: 13144 [2022-03-01 16:12:30,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-01 16:12:30,709 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 409 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:30,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 423 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-01 16:12:30,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13144 states. [2022-03-01 16:12:30,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13144 to 10193. [2022-03-01 16:12:30,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10193 states, 10192 states have (on average 2.8116169544740974) internal successors, (28656), 10192 states have internal predecessors, (28656), 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) [2022-03-01 16:12:30,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 28656 transitions. [2022-03-01 16:12:30,940 INFO L78 Accepts]: Start accepts. Automaton has 10193 states and 28656 transitions. Word has length 140 [2022-03-01 16:12:30,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:30,941 INFO L470 AbstractCegarLoop]: Abstraction has 10193 states and 28656 transitions. [2022-03-01 16:12:30,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 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) [2022-03-01 16:12:30,941 INFO L276 IsEmpty]: Start isEmpty. Operand 10193 states and 28656 transitions. [2022-03-01 16:12:30,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-01 16:12:30,994 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:30,995 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:12:31,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-01 16:12:31,208 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 [2022-03-01 16:12:31,208 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:12:31,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:31,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1592177699, now seen corresponding path program 4 times [2022-03-01 16:12:31,209 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:31,209 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319254848] [2022-03-01 16:12:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:31,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:31,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:31,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319254848] [2022-03-01 16:12:31,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319254848] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:31,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422259136] [2022-03-01 16:12:31,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:12:31,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:31,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:31,483 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) [2022-03-01 16:12:31,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-01 16:12:31,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:12:31,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:12:31,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-01 16:12:31,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:32,139 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:32,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-01 16:12:32,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422259136] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:32,897 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:32,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 15] total 42 [2022-03-01 16:12:32,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938460989] [2022-03-01 16:12:32,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:32,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-01 16:12:32,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:32,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-01 16:12:32,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1438, Unknown=0, NotChecked=0, Total=1722 [2022-03-01 16:12:32,899 INFO L87 Difference]: Start difference. First operand 10193 states and 28656 transitions. Second operand has 42 states, 42 states have (on average 7.428571428571429) internal successors, (312), 42 states have internal predecessors, (312), 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) [2022-03-01 16:12:34,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:12:34,010 INFO L93 Difference]: Finished difference Result 5994 states and 16419 transitions. [2022-03-01 16:12:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-01 16:12:34,010 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.428571428571429) internal successors, (312), 42 states have internal predecessors, (312), 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 141 [2022-03-01 16:12:34,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:12:34,021 INFO L225 Difference]: With dead ends: 5994 [2022-03-01 16:12:34,021 INFO L226 Difference]: Without dead ends: 4775 [2022-03-01 16:12:34,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1231, Invalid=4025, Unknown=0, NotChecked=0, Total=5256 [2022-03-01 16:12:34,023 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 957 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-01 16:12:34,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [957 Valid, 2485 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-01 16:12:34,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2022-03-01 16:12:34,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4770. [2022-03-01 16:12:34,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4769 states have (on average 2.8179911931222477) internal successors, (13439), 4769 states have internal predecessors, (13439), 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) [2022-03-01 16:12:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 13439 transitions. [2022-03-01 16:12:34,118 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 13439 transitions. Word has length 141 [2022-03-01 16:12:34,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:12:34,118 INFO L470 AbstractCegarLoop]: Abstraction has 4770 states and 13439 transitions. [2022-03-01 16:12:34,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.428571428571429) internal successors, (312), 42 states have internal predecessors, (312), 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) [2022-03-01 16:12:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 13439 transitions. [2022-03-01 16:12:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-01 16:12:34,127 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:12:34,127 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:12:34,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-01 16:12:34,350 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 [2022-03-01 16:12:34,351 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:12:34,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:12:34,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1379001184, now seen corresponding path program 5 times [2022-03-01 16:12:34,351 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:12:34,351 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899093319] [2022-03-01 16:12:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:12:34,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:12:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:12:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:12:36,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:12:36,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899093319] [2022-03-01 16:12:36,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899093319] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:12:36,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238512644] [2022-03-01 16:12:36,418 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:12:36,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:12:36,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:12:36,420 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) [2022-03-01 16:12:36,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-01 16:12:36,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-01 16:12:36,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:12:36,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-01 16:12:36,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:12:37,793 INFO L353 Elim1Store]: treesize reduction 63, result has 40.6 percent of original size [2022-03-01 16:12:37,794 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 51 treesize of output 58 [2022-03-01 16:12:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:12:38,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:12:38,799 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-03-01 16:12:38,799 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 77 treesize of output 64 [2022-03-01 16:12:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:12:40,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238512644] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:12:40,432 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:12:40,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 22, 22] total 72 [2022-03-01 16:12:40,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546666874] [2022-03-01 16:12:40,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:12:40,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-03-01 16:12:40,433 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:12:40,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-03-01 16:12:40,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=4529, Unknown=0, NotChecked=0, Total=5112 [2022-03-01 16:12:40,434 INFO L87 Difference]: Start difference. First operand 4770 states and 13439 transitions. Second operand has 72 states, 72 states have (on average 5.513888888888889) internal successors, (397), 72 states have internal predecessors, (397), 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) [2022-03-01 16:13:55,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:13:55,713 INFO L93 Difference]: Finished difference Result 62401 states and 172212 transitions. [2022-03-01 16:13:55,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 388 states. [2022-03-01 16:13:55,713 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 5.513888888888889) internal successors, (397), 72 states have internal predecessors, (397), 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 148 [2022-03-01 16:13:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:13:55,810 INFO L225 Difference]: With dead ends: 62401 [2022-03-01 16:13:55,810 INFO L226 Difference]: Without dead ends: 46433 [2022-03-01 16:13:55,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 260 SyntacticMatches, 3 SemanticMatches, 448 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72942 ImplicationChecksByTransitivity, 68.1s TimeCoverageRelationStatistics Valid=32421, Invalid=169629, Unknown=0, NotChecked=0, Total=202050 [2022-03-01 16:13:55,823 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 9532 mSDsluCounter, 23679 mSDsCounter, 0 mSdLazyCounter, 9305 mSolverCounterSat, 905 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9532 SdHoareTripleChecker+Valid, 22142 SdHoareTripleChecker+Invalid, 10210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 905 IncrementalHoareTripleChecker+Valid, 9305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-03-01 16:13:55,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9532 Valid, 22142 Invalid, 10210 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [905 Valid, 9305 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-03-01 16:13:55,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46433 states. [2022-03-01 16:13:56,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46433 to 18997. [2022-03-01 16:13:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18997 states, 18996 states have (on average 2.859391450831754) internal successors, (54317), 18996 states have internal predecessors, (54317), 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) [2022-03-01 16:13:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18997 states to 18997 states and 54317 transitions. [2022-03-01 16:13:56,556 INFO L78 Accepts]: Start accepts. Automaton has 18997 states and 54317 transitions. Word has length 148 [2022-03-01 16:13:56,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:13:56,557 INFO L470 AbstractCegarLoop]: Abstraction has 18997 states and 54317 transitions. [2022-03-01 16:13:56,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 5.513888888888889) internal successors, (397), 72 states have internal predecessors, (397), 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) [2022-03-01 16:13:56,557 INFO L276 IsEmpty]: Start isEmpty. Operand 18997 states and 54317 transitions. [2022-03-01 16:13:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-01 16:13:56,579 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:13:56,579 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-01 16:13:56,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-01 16:13:56,802 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 [2022-03-01 16:13:56,802 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:13:56,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:13:56,803 INFO L85 PathProgramCache]: Analyzing trace with hash -681406591, now seen corresponding path program 6 times [2022-03-01 16:13:56,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:13:56,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167872390] [2022-03-01 16:13:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:13:56,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:13:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:13:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:13:57,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:13:57,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167872390] [2022-03-01 16:13:57,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167872390] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:13:57,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687868190] [2022-03-01 16:13:57,729 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:13:57,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:13:57,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:13:57,730 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) [2022-03-01 16:13:57,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-01 16:13:57,933 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-01 16:13:57,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:13:57,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-01 16:13:57,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:13:58,792 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-03-01 16:13:59,273 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 [2022-03-01 16:13:59,351 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 [2022-03-01 16:14:00,373 INFO L353 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2022-03-01 16:14:00,374 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 72 treesize of output 18 [2022-03-01 16:14:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:14:00,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:14:03,299 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:14:03,299 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 272 treesize of output 176 [2022-03-01 16:14:03,383 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-03-01 16:14:03,384 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 1106 treesize of output 1028 [2022-03-01 16:14:03,472 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-03-01 16:14:03,472 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 950 treesize of output 908 [2022-03-01 16:14:03,558 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-03-01 16:14:03,558 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 830 treesize of output 668 [2022-03-01 16:14:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:14:08,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687868190] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:14:08,802 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:14:08,802 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 34, 31] total 86 [2022-03-01 16:14:08,802 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489835818] [2022-03-01 16:14:08,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:14:08,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-03-01 16:14:08,802 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:14:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-03-01 16:14:08,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1478, Invalid=5786, Unknown=46, NotChecked=0, Total=7310 [2022-03-01 16:14:08,804 INFO L87 Difference]: Start difference. First operand 18997 states and 54317 transitions. Second operand has 86 states, 86 states have (on average 4.6976744186046515) internal successors, (404), 86 states have internal predecessors, (404), 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) [2022-03-01 16:14:28,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:14:28,666 INFO L93 Difference]: Finished difference Result 41656 states and 114549 transitions. [2022-03-01 16:14:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2022-03-01 16:14:28,667 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.6976744186046515) internal successors, (404), 86 states have internal predecessors, (404), 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 151 [2022-03-01 16:14:28,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:14:28,737 INFO L225 Difference]: With dead ends: 41656 [2022-03-01 16:14:28,737 INFO L226 Difference]: Without dead ends: 30816 [2022-03-01 16:14:28,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 260 SyntacticMatches, 4 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24204 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=7352, Invalid=51361, Unknown=93, NotChecked=0, Total=58806 [2022-03-01 16:14:28,743 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 4259 mSDsluCounter, 13846 mSDsCounter, 0 mSdLazyCounter, 4724 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4259 SdHoareTripleChecker+Valid, 13250 SdHoareTripleChecker+Invalid, 6925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 4724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1940 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:14:28,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4259 Valid, 13250 Invalid, 6925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 4724 Invalid, 0 Unknown, 1940 Unchecked, 2.7s Time] [2022-03-01 16:14:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30816 states. [2022-03-01 16:14:29,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30816 to 20819. [2022-03-01 16:14:29,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20819 states, 20818 states have (on average 2.8467191853203957) internal successors, (59263), 20818 states have internal predecessors, (59263), 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) [2022-03-01 16:14:29,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20819 states to 20819 states and 59263 transitions. [2022-03-01 16:14:29,274 INFO L78 Accepts]: Start accepts. Automaton has 20819 states and 59263 transitions. Word has length 151 [2022-03-01 16:14:29,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:14:29,274 INFO L470 AbstractCegarLoop]: Abstraction has 20819 states and 59263 transitions. [2022-03-01 16:14:29,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.6976744186046515) internal successors, (404), 86 states have internal predecessors, (404), 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) [2022-03-01 16:14:29,275 INFO L276 IsEmpty]: Start isEmpty. Operand 20819 states and 59263 transitions. [2022-03-01 16:14:29,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-01 16:14:29,293 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:14:29,294 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-01 16:14:29,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-01 16:14:29,518 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 [2022-03-01 16:14:29,518 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:14:29,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:14:29,519 INFO L85 PathProgramCache]: Analyzing trace with hash 3636753, now seen corresponding path program 7 times [2022-03-01 16:14:29,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:14:29,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195800568] [2022-03-01 16:14:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:14:29,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:14:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:14:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-01 16:14:29,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:14:29,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195800568] [2022-03-01 16:14:29,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195800568] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:14:29,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360793129] [2022-03-01 16:14:29,764 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:14:29,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:14:29,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:14:29,766 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) [2022-03-01 16:14:29,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-01 16:14:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:14:29,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-01 16:14:29,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:14:31,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 16:14:31,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 16:14:31,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-01 16:14:31,522 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:14:31,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 18 [2022-03-01 16:14:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:14:31,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:14:32,346 INFO L353 Elim1Store]: treesize reduction 154, result has 41.0 percent of original size [2022-03-01 16:14:32,347 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 110 treesize of output 138 [2022-03-01 16:14:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:14:34,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360793129] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:14:34,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:14:34,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 31, 25] total 57 [2022-03-01 16:14:34,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826225600] [2022-03-01 16:14:34,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:14:34,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-01 16:14:34,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:14:34,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-01 16:14:34,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=2536, Unknown=0, NotChecked=0, Total=3192 [2022-03-01 16:14:34,303 INFO L87 Difference]: Start difference. First operand 20819 states and 59263 transitions. Second operand has 57 states, 57 states have (on average 6.649122807017544) internal successors, (379), 57 states have internal predecessors, (379), 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) [2022-03-01 16:14:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:14:42,600 INFO L93 Difference]: Finished difference Result 75157 states and 209644 transitions. [2022-03-01 16:14:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-03-01 16:14:42,600 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 6.649122807017544) internal successors, (379), 57 states have internal predecessors, (379), 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 151 [2022-03-01 16:14:42,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:14:42,712 INFO L225 Difference]: With dead ends: 75157 [2022-03-01 16:14:42,713 INFO L226 Difference]: Without dead ends: 54838 [2022-03-01 16:14:42,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 253 SyntacticMatches, 6 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15826 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=4822, Invalid=36998, Unknown=0, NotChecked=0, Total=41820 [2022-03-01 16:14:42,716 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 3899 mSDsluCounter, 8751 mSDsCounter, 0 mSdLazyCounter, 3323 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3899 SdHoareTripleChecker+Valid, 8454 SdHoareTripleChecker+Invalid, 3547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 3323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:14:42,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3899 Valid, 8454 Invalid, 3547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 3323 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-01 16:14:42,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54838 states. [2022-03-01 16:14:43,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54838 to 28967. [2022-03-01 16:14:43,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28967 states, 28966 states have (on average 2.8235172270938342) internal successors, (81786), 28966 states have internal predecessors, (81786), 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) [2022-03-01 16:14:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28967 states to 28967 states and 81786 transitions. [2022-03-01 16:14:43,593 INFO L78 Accepts]: Start accepts. Automaton has 28967 states and 81786 transitions. Word has length 151 [2022-03-01 16:14:43,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:14:43,594 INFO L470 AbstractCegarLoop]: Abstraction has 28967 states and 81786 transitions. [2022-03-01 16:14:43,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 6.649122807017544) internal successors, (379), 57 states have internal predecessors, (379), 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) [2022-03-01 16:14:43,594 INFO L276 IsEmpty]: Start isEmpty. Operand 28967 states and 81786 transitions. [2022-03-01 16:14:43,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-01 16:14:43,609 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:14:43,610 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-01 16:14:43,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-01 16:14:43,826 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 [2022-03-01 16:14:43,826 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:14:43,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:14:43,827 INFO L85 PathProgramCache]: Analyzing trace with hash -687760343, now seen corresponding path program 8 times [2022-03-01 16:14:43,827 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:14:43,827 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646684435] [2022-03-01 16:14:43,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:14:43,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:14:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:14:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-01 16:14:44,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:14:44,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646684435] [2022-03-01 16:14:44,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646684435] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:14:44,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957140356] [2022-03-01 16:14:44,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:14:44,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:14:44,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:14:44,132 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) [2022-03-01 16:14:44,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-01 16:14:44,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:14:44,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:14:44,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 91 conjunts are in the unsatisfiable core [2022-03-01 16:14:44,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:14:45,171 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 [2022-03-01 16:14:45,479 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 [2022-03-01 16:14:45,555 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 [2022-03-01 16:14:46,367 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-03-01 16:14:46,368 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 74 treesize of output 22 [2022-03-01 16:14:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:14:46,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:14:48,772 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:14:48,773 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 272 treesize of output 176 [2022-03-01 16:14:48,828 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-03-01 16:14:48,828 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 528 treesize of output 528 [2022-03-01 16:14:48,885 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-03-01 16:14:48,886 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 450 treesize of output 408 [2022-03-01 16:14:48,947 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-03-01 16:14:48,948 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 330 treesize of output 348 [2022-03-01 16:14:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:14:54,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957140356] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:14:54,036 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:14:54,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 38, 34] total 75 [2022-03-01 16:14:54,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009197936] [2022-03-01 16:14:54,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:14:54,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-03-01 16:14:54,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:14:54,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-03-01 16:14:54,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=4477, Unknown=67, NotChecked=0, Total=5550 [2022-03-01 16:14:54,037 INFO L87 Difference]: Start difference. First operand 28967 states and 81786 transitions. Second operand has 75 states, 75 states have (on average 5.2) internal successors, (390), 75 states have internal predecessors, (390), 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) [2022-03-01 16:15:10,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:15:10,750 INFO L93 Difference]: Finished difference Result 93572 states and 259918 transitions. [2022-03-01 16:15:10,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-03-01 16:15:10,750 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 5.2) internal successors, (390), 75 states have internal predecessors, (390), 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 151 [2022-03-01 16:15:10,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:15:11,015 INFO L225 Difference]: With dead ends: 93572 [2022-03-01 16:15:11,016 INFO L226 Difference]: Without dead ends: 73592 [2022-03-01 16:15:11,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 237 SyntacticMatches, 5 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25091 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=7240, Invalid=59515, Unknown=67, NotChecked=0, Total=66822 [2022-03-01 16:15:11,018 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 7045 mSDsluCounter, 13550 mSDsCounter, 0 mSdLazyCounter, 4590 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7045 SdHoareTripleChecker+Valid, 12753 SdHoareTripleChecker+Invalid, 6824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 4590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1773 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:15:11,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7045 Valid, 12753 Invalid, 6824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 4590 Invalid, 0 Unknown, 1773 Unchecked, 2.5s Time] [2022-03-01 16:15:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73592 states. [2022-03-01 16:15:11,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73592 to 32625. [2022-03-01 16:15:11,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32625 states, 32624 states have (on average 2.8049288867091713) internal successors, (91508), 32624 states have internal predecessors, (91508), 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) [2022-03-01 16:15:11,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32625 states to 32625 states and 91508 transitions. [2022-03-01 16:15:11,955 INFO L78 Accepts]: Start accepts. Automaton has 32625 states and 91508 transitions. Word has length 151 [2022-03-01 16:15:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:15:11,955 INFO L470 AbstractCegarLoop]: Abstraction has 32625 states and 91508 transitions. [2022-03-01 16:15:11,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 5.2) internal successors, (390), 75 states have internal predecessors, (390), 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) [2022-03-01 16:15:11,956 INFO L276 IsEmpty]: Start isEmpty. Operand 32625 states and 91508 transitions. [2022-03-01 16:15:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-01 16:15:11,979 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:15:11,979 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-01 16:15:11,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-01 16:15:12,179 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,SelfDestructingSolverStorable16 [2022-03-01 16:15:12,180 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:15:12,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:15:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash -914560453, now seen corresponding path program 9 times [2022-03-01 16:15:12,181 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:15:12,181 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656828385] [2022-03-01 16:15:12,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:15:12,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:15:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:15:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-01 16:15:12,428 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:15:12,428 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656828385] [2022-03-01 16:15:12,428 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656828385] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:15:12,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972993702] [2022-03-01 16:15:12,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-01 16:15:12,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:15:12,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:15:12,430 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) [2022-03-01 16:15:12,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-01 16:15:12,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-01 16:15:12,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:15:12,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-01 16:15:12,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:15:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-01 16:15:12,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:15:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-01 16:15:13,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972993702] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:15:13,448 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:15:13,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 9] total 14 [2022-03-01 16:15:13,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159227190] [2022-03-01 16:15:13,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:15:13,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-01 16:15:13,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:15:13,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-01 16:15:13,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-03-01 16:15:13,449 INFO L87 Difference]: Start difference. First operand 32625 states and 91508 transitions. Second operand has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 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) [2022-03-01 16:15:13,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:15:13,758 INFO L93 Difference]: Finished difference Result 53388 states and 149861 transitions. [2022-03-01 16:15:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-01 16:15:13,759 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 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 161 [2022-03-01 16:15:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:15:13,858 INFO L225 Difference]: With dead ends: 53388 [2022-03-01 16:15:13,858 INFO L226 Difference]: Without dead ends: 52604 [2022-03-01 16:15:13,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-03-01 16:15:13,859 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 660 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-01 16:15:13,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 596 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-01 16:15:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52604 states. [2022-03-01 16:15:14,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52604 to 38395. [2022-03-01 16:15:14,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38395 states, 38394 states have (on average 2.8217690264103767) internal successors, (108339), 38394 states have internal predecessors, (108339), 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) [2022-03-01 16:15:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38395 states to 38395 states and 108339 transitions. [2022-03-01 16:15:14,661 INFO L78 Accepts]: Start accepts. Automaton has 38395 states and 108339 transitions. Word has length 161 [2022-03-01 16:15:14,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:15:14,661 INFO L470 AbstractCegarLoop]: Abstraction has 38395 states and 108339 transitions. [2022-03-01 16:15:14,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 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) [2022-03-01 16:15:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 38395 states and 108339 transitions. [2022-03-01 16:15:14,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-03-01 16:15:14,686 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:15:14,687 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:15:14,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-01 16:15:14,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-01 16:15:14,908 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:15:14,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:15:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1215682146, now seen corresponding path program 10 times [2022-03-01 16:15:14,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:15:14,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764532180] [2022-03-01 16:15:14,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:15:14,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:15:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:15:15,122 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 42 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-01 16:15:15,122 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:15:15,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764532180] [2022-03-01 16:15:15,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764532180] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:15:15,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745479644] [2022-03-01 16:15:15,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-01 16:15:15,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:15:15,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:15:15,128 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) [2022-03-01 16:15:15,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-01 16:15:15,229 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-01 16:15:15,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:15:15,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-01 16:15:15,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:15:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 72 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-01 16:15:16,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:15:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 15 proven. 81 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-01 16:15:16,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745479644] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:15:16,753 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:15:16,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 44 [2022-03-01 16:15:16,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256467725] [2022-03-01 16:15:16,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:15:16,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-01 16:15:16,757 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:15:16,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-01 16:15:16,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2022-03-01 16:15:16,758 INFO L87 Difference]: Start difference. First operand 38395 states and 108339 transitions. Second operand has 44 states, 44 states have (on average 7.795454545454546) internal successors, (343), 44 states have internal predecessors, (343), 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) [2022-03-01 16:15:18,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:15:18,754 INFO L93 Difference]: Finished difference Result 12302 states and 33231 transitions. [2022-03-01 16:15:18,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-01 16:15:18,755 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 7.795454545454546) internal successors, (343), 44 states have internal predecessors, (343), 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 [2022-03-01 16:15:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:15:18,767 INFO L225 Difference]: With dead ends: 12302 [2022-03-01 16:15:18,767 INFO L226 Difference]: Without dead ends: 9263 [2022-03-01 16:15:18,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1725, Invalid=5931, Unknown=0, NotChecked=0, Total=7656 [2022-03-01 16:15:18,768 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1413 mSDsluCounter, 4928 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 5173 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-01 16:15:18,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 5173 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-01 16:15:18,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9263 states. [2022-03-01 16:15:18,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9263 to 9263. [2022-03-01 16:15:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9263 states, 9262 states have (on average 2.7618225005398402) internal successors, (25580), 9262 states have internal predecessors, (25580), 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) [2022-03-01 16:15:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 25580 transitions. [2022-03-01 16:15:18,881 INFO L78 Accepts]: Start accepts. Automaton has 9263 states and 25580 transitions. Word has length 165 [2022-03-01 16:15:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:15:18,881 INFO L470 AbstractCegarLoop]: Abstraction has 9263 states and 25580 transitions. [2022-03-01 16:15:18,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 7.795454545454546) internal successors, (343), 44 states have internal predecessors, (343), 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) [2022-03-01 16:15:18,881 INFO L276 IsEmpty]: Start isEmpty. Operand 9263 states and 25580 transitions. [2022-03-01 16:15:18,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-03-01 16:15:18,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:15:18,920 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:15:18,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-01 16:15:19,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:15:19,132 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:15:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:15:19,132 INFO L85 PathProgramCache]: Analyzing trace with hash 761820768, now seen corresponding path program 11 times [2022-03-01 16:15:19,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:15:19,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322513105] [2022-03-01 16:15:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:15:19,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:15:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:15:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 20 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:15:21,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:15:21,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322513105] [2022-03-01 16:15:21,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322513105] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:15:21,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30352239] [2022-03-01 16:15:21,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-01 16:15:21,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:15:21,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:15:21,460 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) [2022-03-01 16:15:21,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-01 16:15:21,583 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-01 16:15:21,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:15:21,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-01 16:15:21,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:15:24,639 INFO L353 Elim1Store]: treesize reduction 162, result has 4.1 percent of original size [2022-03-01 16:15:24,639 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 28 [2022-03-01 16:15:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 20 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:15:24,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:15:25,793 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-03-01 16:15:25,793 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 108 treesize of output 152 [2022-03-01 16:15:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 11 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:15:28,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30352239] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:15:28,751 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:15:28,751 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 30, 30] total 90 [2022-03-01 16:15:28,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099640796] [2022-03-01 16:15:28,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:15:28,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-03-01 16:15:28,752 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:15:28,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-03-01 16:15:28,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=7394, Unknown=0, NotChecked=0, Total=8010 [2022-03-01 16:15:28,753 INFO L87 Difference]: Start difference. First operand 9263 states and 25580 transitions. Second operand has 90 states, 90 states have (on average 5.088888888888889) internal successors, (458), 90 states have internal predecessors, (458), 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) [2022-03-01 16:15:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:15:39,221 INFO L93 Difference]: Finished difference Result 54033 states and 148244 transitions. [2022-03-01 16:15:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-01 16:15:39,223 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 5.088888888888889) internal successors, (458), 90 states have internal predecessors, (458), 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 169 [2022-03-01 16:15:39,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:15:39,339 INFO L225 Difference]: With dead ends: 54033 [2022-03-01 16:15:39,339 INFO L226 Difference]: Without dead ends: 53459 [2022-03-01 16:15:39,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 297 SyntacticMatches, 5 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9789 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=3149, Invalid=29431, Unknown=0, NotChecked=0, Total=32580 [2022-03-01 16:15:39,342 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 4056 mSDsluCounter, 20921 mSDsCounter, 0 mSdLazyCounter, 4907 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 19939 SdHoareTripleChecker+Invalid, 7870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 4907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2750 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-01 16:15:39,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4056 Valid, 19939 Invalid, 7870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 4907 Invalid, 0 Unknown, 2750 Unchecked, 2.5s Time] [2022-03-01 16:15:39,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53459 states. [2022-03-01 16:15:39,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53459 to 29629. [2022-03-01 16:15:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29629 states, 29628 states have (on average 2.8401174564601055) internal successors, (84147), 29628 states have internal predecessors, (84147), 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) [2022-03-01 16:15:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29629 states to 29629 states and 84147 transitions. [2022-03-01 16:15:40,050 INFO L78 Accepts]: Start accepts. Automaton has 29629 states and 84147 transitions. Word has length 169 [2022-03-01 16:15:40,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:15:40,050 INFO L470 AbstractCegarLoop]: Abstraction has 29629 states and 84147 transitions. [2022-03-01 16:15:40,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 5.088888888888889) internal successors, (458), 90 states have internal predecessors, (458), 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) [2022-03-01 16:15:40,050 INFO L276 IsEmpty]: Start isEmpty. Operand 29629 states and 84147 transitions. [2022-03-01 16:15:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-03-01 16:15:40,074 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:15:40,075 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-01 16:15:40,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-03-01 16:15:40,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:15:40,275 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:15:40,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:15:40,276 INFO L85 PathProgramCache]: Analyzing trace with hash 841327630, now seen corresponding path program 12 times [2022-03-01 16:15:40,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:15:40,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288536507] [2022-03-01 16:15:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:15:40,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:15:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:15:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:15:42,609 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:15:42,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288536507] [2022-03-01 16:15:42,610 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288536507] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:15:42,610 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565909784] [2022-03-01 16:15:42,610 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-01 16:15:42,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:15:42,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:15:42,611 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) [2022-03-01 16:15:42,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-01 16:15:42,901 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-01 16:15:42,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:15:42,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-01 16:15:42,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:15:44,002 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-03-01 16:15:44,002 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 70 treesize of output 18 [2022-03-01 16:15:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-01 16:15:44,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:15:44,713 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-03-01 16:15:44,713 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 110 treesize of output 152 [2022-03-01 16:15:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 20 proven. 58 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-01 16:15:45,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565909784] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:15:45,432 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:15:45,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 17, 12] total 60 [2022-03-01 16:15:45,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640550767] [2022-03-01 16:15:45,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:15:45,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-03-01 16:15:45,433 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:15:45,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-03-01 16:15:45,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=3265, Unknown=0, NotChecked=0, Total=3540 [2022-03-01 16:15:45,434 INFO L87 Difference]: Start difference. First operand 29629 states and 84147 transitions. Second operand has 60 states, 60 states have (on average 7.15) internal successors, (429), 60 states have internal predecessors, (429), 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) [2022-03-01 16:16:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:16:03,384 INFO L93 Difference]: Finished difference Result 76773 states and 212793 transitions. [2022-03-01 16:16:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-03-01 16:16:03,384 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 7.15) internal successors, (429), 60 states have internal predecessors, (429), 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 169 [2022-03-01 16:16:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:16:03,514 INFO L225 Difference]: With dead ends: 76773 [2022-03-01 16:16:03,515 INFO L226 Difference]: Without dead ends: 64836 [2022-03-01 16:16:03,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14255 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=3883, Invalid=39173, Unknown=0, NotChecked=0, Total=43056 [2022-03-01 16:16:03,517 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 3746 mSDsluCounter, 13517 mSDsCounter, 0 mSdLazyCounter, 5201 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 13385 SdHoareTripleChecker+Invalid, 5554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 5201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-01 16:16:03,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 13385 Invalid, 5554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 5201 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-01 16:16:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64836 states. [2022-03-01 16:16:04,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64836 to 37154. [2022-03-01 16:16:04,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37154 states, 37153 states have (on average 2.858234866632573) internal successors, (106192), 37153 states have internal predecessors, (106192), 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) [2022-03-01 16:16:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37154 states to 37154 states and 106192 transitions. [2022-03-01 16:16:04,262 INFO L78 Accepts]: Start accepts. Automaton has 37154 states and 106192 transitions. Word has length 169 [2022-03-01 16:16:04,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:16:04,262 INFO L470 AbstractCegarLoop]: Abstraction has 37154 states and 106192 transitions. [2022-03-01 16:16:04,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 7.15) internal successors, (429), 60 states have internal predecessors, (429), 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) [2022-03-01 16:16:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 37154 states and 106192 transitions. [2022-03-01 16:16:04,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-01 16:16:04,520 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:16:04,520 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-01 16:16:04,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-01 16:16:04,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:16:04,744 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:16:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:16:04,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1266953787, now seen corresponding path program 13 times [2022-03-01 16:16:04,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:16:04,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355045435] [2022-03-01 16:16:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:16:04,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:16:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:16:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:16:06,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:16:06,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355045435] [2022-03-01 16:16:06,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355045435] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:16:06,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387366444] [2022-03-01 16:16:06,001 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-01 16:16:06,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:16:06,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:16:06,002 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:16:06,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-01 16:16:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:16:06,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 111 conjunts are in the unsatisfiable core [2022-03-01 16:16:06,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:16:06,190 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 [2022-03-01 16:16:06,699 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-01 16:16:06,700 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 [2022-03-01 16:16:07,092 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 15 treesize of output 11 [2022-03-01 16:16:07,317 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 15 treesize of output 11 [2022-03-01 16:16:07,591 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 15 treesize of output 11 [2022-03-01 16:16:07,988 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 [2022-03-01 16:16:08,066 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 [2022-03-01 16:16:10,288 INFO L353 Elim1Store]: treesize reduction 345, result has 2.8 percent of original size [2022-03-01 16:16:10,289 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 95 treesize of output 36 [2022-03-01 16:16:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:16:10,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:16:28,202 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-03-01 16:16:28,202 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 3 case distinctions, treesize of input 550 treesize of output 252 [2022-03-01 16:16:28,422 INFO L353 Elim1Store]: treesize reduction 253, result has 46.2 percent of original size [2022-03-01 16:16:28,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 668 treesize of output 782 [2022-03-01 16:16:28,623 INFO L353 Elim1Store]: treesize reduction 253, result has 46.2 percent of original size [2022-03-01 16:16:28,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 566 treesize of output 626 [2022-03-01 16:16:28,811 INFO L353 Elim1Store]: treesize reduction 253, result has 46.2 percent of original size [2022-03-01 16:16:28,811 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 410 treesize of output 548 [2022-03-01 16:22:29,394 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 [2022-03-01 16:22:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 20 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:29,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387366444] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-01 16:22:29,442 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-01 16:22:29,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 41, 41] total 107 [2022-03-01 16:22:29,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233666379] [2022-03-01 16:22:29,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-01 16:22:29,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-03-01 16:22:29,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-01 16:22:29,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-03-01 16:22:29,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1287, Invalid=9966, Unknown=89, NotChecked=0, Total=11342 [2022-03-01 16:22:29,444 INFO L87 Difference]: Start difference. First operand 37154 states and 106192 transitions. Second operand has 107 states, 107 states have (on average 4.364485981308412) internal successors, (467), 107 states have internal predecessors, (467), 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) [2022-03-01 16:22:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-01 16:22:34,081 INFO L93 Difference]: Finished difference Result 48691 states and 137252 transitions. [2022-03-01 16:22:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-01 16:22:34,081 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 4.364485981308412) internal successors, (467), 107 states have internal predecessors, (467), 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 172 [2022-03-01 16:22:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-01 16:22:34,188 INFO L225 Difference]: With dead ends: 48691 [2022-03-01 16:22:34,188 INFO L226 Difference]: Without dead ends: 47694 [2022-03-01 16:22:34,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 287 SyntacticMatches, 10 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7655 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=2828, Invalid=20035, Unknown=89, NotChecked=0, Total=22952 [2022-03-01 16:22:34,191 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2707 mSDsluCounter, 9531 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2707 SdHoareTripleChecker+Valid, 9584 SdHoareTripleChecker+Invalid, 4281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2770 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-01 16:22:34,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2707 Valid, 9584 Invalid, 4281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1460 Invalid, 0 Unknown, 2770 Unchecked, 0.7s Time] [2022-03-01 16:22:34,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47694 states. [2022-03-01 16:22:34,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47694 to 38969. [2022-03-01 16:22:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38969 states, 38968 states have (on average 2.845976185588175) internal successors, (110902), 38968 states have internal predecessors, (110902), 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) [2022-03-01 16:22:35,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38969 states to 38969 states and 110902 transitions. [2022-03-01 16:22:35,056 INFO L78 Accepts]: Start accepts. Automaton has 38969 states and 110902 transitions. Word has length 172 [2022-03-01 16:22:35,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-01 16:22:35,056 INFO L470 AbstractCegarLoop]: Abstraction has 38969 states and 110902 transitions. [2022-03-01 16:22:35,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 4.364485981308412) internal successors, (467), 107 states have internal predecessors, (467), 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) [2022-03-01 16:22:35,057 INFO L276 IsEmpty]: Start isEmpty. Operand 38969 states and 110902 transitions. [2022-03-01 16:22:35,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-01 16:22:35,079 INFO L506 BasicCegarLoop]: Found error trace [2022-03-01 16:22:35,080 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-03-01 16:22:35,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-01 16:22:35,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-01 16:22:35,281 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-01 16:22:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-01 16:22:35,282 INFO L85 PathProgramCache]: Analyzing trace with hash -966067763, now seen corresponding path program 14 times [2022-03-01 16:22:35,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-01 16:22:35,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641373877] [2022-03-01 16:22:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-01 16:22:35,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-01 16:22:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-01 16:22:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:37,188 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-01 16:22:37,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641373877] [2022-03-01 16:22:37,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641373877] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-01 16:22:37,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658658897] [2022-03-01 16:22:37,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-01 16:22:37,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:22:37,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-01 16:22:37,190 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-01 16:22:37,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-01 16:22:37,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-01 16:22:37,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-01 16:22:37,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 103 conjunts are in the unsatisfiable core [2022-03-01 16:22:37,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-01 16:22:38,761 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 [2022-03-01 16:22:39,211 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 [2022-03-01 16:22:39,304 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 [2022-03-01 16:22:41,316 INFO L353 Elim1Store]: treesize reduction 345, result has 2.8 percent of original size [2022-03-01 16:22:41,317 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 92 treesize of output 33 [2022-03-01 16:22:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-01 16:22:41,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-01 16:23:52,296 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-01 16:23:52,296 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 355 treesize of output 223 [2022-03-01 16:23:52,475 INFO L353 Elim1Store]: treesize reduction 253, result has 46.2 percent of original size [2022-03-01 16:23:52,476 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 656 treesize of output 773 [2022-03-01 16:23:52,669 INFO L353 Elim1Store]: treesize reduction 253, result has 46.2 percent of original size [2022-03-01 16:23:52,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 557 treesize of output 623 [2022-03-01 16:23:52,875 INFO L353 Elim1Store]: treesize reduction 253, result has 46.2 percent of original size [2022-03-01 16:23:52,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 407 treesize of output 548 Received shutdown request... [2022-03-01 16:25:03,642 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-03-01 16:25:03,643 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-01 16:25:03,658 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 [2022-03-01 16:25:03,658 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-01 16:25:03,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-01 16:25:03,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-01 16:25:03,844 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 173 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 40ms.. [2022-03-01 16:25:03,846 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-01 16:25:03,846 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-01 16:25:03,848 INFO L732 BasicCegarLoop]: Path program histogram: [14, 4, 1, 1, 1, 1, 1] [2022-03-01 16:25:03,849 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-01 16:25:03,849 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-01 16:25:03,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.03 04:25:03 BasicIcfg [2022-03-01 16:25:03,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-01 16:25:03,851 INFO L158 Benchmark]: Toolchain (without parser) took 787292.69ms. Allocated memory was 204.5MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 152.9MB in the beginning and 485.8MB in the end (delta: -332.9MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2022-03-01 16:25:03,851 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 204.5MB. Free memory was 169.6MB in the beginning and 169.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-01 16:25:03,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.17ms. Allocated memory is still 204.5MB. Free memory was 152.8MB in the beginning and 179.1MB in the end (delta: -26.4MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2022-03-01 16:25:03,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.78ms. Allocated memory is still 204.5MB. Free memory was 179.1MB in the beginning and 177.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-01 16:25:03,852 INFO L158 Benchmark]: Boogie Preprocessor took 22.91ms. Allocated memory is still 204.5MB. Free memory was 177.0MB in the beginning and 176.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-01 16:25:03,858 INFO L158 Benchmark]: RCFGBuilder took 494.84ms. Allocated memory is still 204.5MB. Free memory was 175.5MB in the beginning and 157.1MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-03-01 16:25:03,858 INFO L158 Benchmark]: TraceAbstraction took 786480.03ms. Allocated memory was 204.5MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 156.6MB in the beginning and 485.8MB in the end (delta: -329.2MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2022-03-01 16:25:03,859 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 204.5MB. Free memory was 169.6MB in the beginning and 169.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 258.17ms. Allocated memory is still 204.5MB. Free memory was 152.8MB in the beginning and 179.1MB in the end (delta: -26.4MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.78ms. Allocated memory is still 204.5MB. Free memory was 179.1MB in the beginning and 177.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.91ms. Allocated memory is still 204.5MB. Free memory was 177.0MB in the beginning and 176.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 494.84ms. Allocated memory is still 204.5MB. Free memory was 175.5MB in the beginning and 157.1MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 786480.03ms. Allocated memory was 204.5MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 156.6MB in the beginning and 485.8MB in the end (delta: -329.2MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 173 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 40ms.. - TimeoutResultAtElement [Line: 89]: 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 173 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 40ms.. - TimeoutResultAtElement [Line: 88]: 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 173 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 40ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 786.4s, OverallIterations: 23, TraceHistogramMax: 4, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.6s, AutomataDifference: 167.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46358 SdHoareTripleChecker+Valid, 21.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46358 mSDsluCounter, 121997 SdHoareTripleChecker+Invalid, 18.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 10526 IncrementalHoareTripleChecker+Unchecked, 125017 mSDsCounter, 3082 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39159 IncrementalHoareTripleChecker+Invalid, 52767 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3082 mSolverCounterUnsat, 4976 mSDtfsCounter, 39159 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6396 GetRequests, 4096 SyntacticMatches, 51 SemanticMatches, 2249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182264 ImplicationChecksByTransitivity, 162.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38969occurred in iteration=22, InterpolantAutomatonStates: 1601, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 195606 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 455.0s InterpolantComputationTime, 5228 NumberOfCodeBlocks, 5175 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 7485 ConstructedInterpolants, 329 QuantifiedInterpolants, 162140 SizeOfPredicates, 459 NumberOfNonLiveVariables, 5079 ConjunctsInSsa, 877 ConjunctsInUnsatCore, 54 InterpolantComputations, 6 PerfectInterpolantSequences, 869/3144 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