/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 02:45:51,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 02:45:51,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 02:45:51,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 02:45:51,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 02:45:51,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 02:45:51,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 02:45:51,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 02:45:51,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 02:45:51,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 02:45:51,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 02:45:51,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 02:45:51,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 02:45:51,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 02:45:51,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 02:45:51,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 02:45:51,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 02:45:51,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 02:45:51,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 02:45:51,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 02:45:51,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 02:45:51,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 02:45:51,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 02:45:51,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 02:45:51,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 02:45:51,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 02:45:51,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 02:45:51,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 02:45:51,993 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 02:45:52,029 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 02:45:52,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 02:45:52,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 02:45:52,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 02:45:52,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 02:45:52,031 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 02:45:52,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 02:45:52,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 02:45:52,032 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 02:45:52,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 02:45:52,033 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 02:45:52,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 02:45:52,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 02:45:52,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 02:45:52,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 02:45:52,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 02:45:52,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 02:45:52,034 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 02:45:52,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 02:45:52,034 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 02:45:52,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 02:45:52,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 02:45:52,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 02:45:52,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 02:45:52,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 02:45:52,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:45:52,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 02:45:52,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 02:45:52,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 02:45:52,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 02:45:52,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 02:45:52,037 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 02:45:52,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 02:45:52,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 02:45:52,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 02:45:52,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 02:45:52,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 02:45:52,265 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 02:45:52,266 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 02:45:52,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2022-01-18 02:45:52,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda860109/b9eaf3a28af1481cbfa74553b4f389ea/FLAGd1e011060 [2022-01-18 02:45:52,734 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 02:45:52,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2022-01-18 02:45:52,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda860109/b9eaf3a28af1481cbfa74553b4f389ea/FLAGd1e011060 [2022-01-18 02:45:52,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eda860109/b9eaf3a28af1481cbfa74553b4f389ea [2022-01-18 02:45:52,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 02:45:52,763 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 02:45:52,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 02:45:52,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 02:45:52,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 02:45:52,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:45:52" (1/1) ... [2022-01-18 02:45:52,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525ea796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:52, skipping insertion in model container [2022-01-18 02:45:52,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:45:52" (1/1) ... [2022-01-18 02:45:52,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 02:45:52,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 02:45:52,948 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-queue-add-2.wvr.c[2696,2709] [2022-01-18 02:45:52,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:45:52,962 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 02:45:53,000 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-queue-add-2.wvr.c[2696,2709] [2022-01-18 02:45:53,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:45:53,016 INFO L208 MainTranslator]: Completed translation [2022-01-18 02:45:53,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:53 WrapperNode [2022-01-18 02:45:53,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 02:45:53,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 02:45:53,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 02:45:53,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 02:45:53,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:53" (1/1) ... [2022-01-18 02:45:53,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:53" (1/1) ... [2022-01-18 02:45:53,051 INFO L137 Inliner]: procedures = 24, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 154 [2022-01-18 02:45:53,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 02:45:53,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 02:45:53,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 02:45:53,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 02:45:53,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:53" (1/1) ... [2022-01-18 02:45:53,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:53" (1/1) ... [2022-01-18 02:45:53,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:53" (1/1) ... [2022-01-18 02:45:53,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:53" (1/1) ... [2022-01-18 02:45:53,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:53" (1/1) ... [2022-01-18 02:45:53,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:53" (1/1) ... [2022-01-18 02:45:53,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:53" (1/1) ... [2022-01-18 02:45:53,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 02:45:53,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 02:45:53,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 02:45:53,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 02:45:53,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:53" (1/1) ... [2022-01-18 02:45:53,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:45:53,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:53,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 02:45:53,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 02:45:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 02:45:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 02:45:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 02:45:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 02:45:53,143 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 02:45:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 02:45:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 02:45:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 02:45:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 02:45:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 02:45:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 02:45:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 02:45:53,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 02:45:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 02:45:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 02:45:53,146 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 02:45:53,269 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 02:45:53,271 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 02:45:53,518 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 02:45:53,593 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 02:45:53,593 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 02:45:53,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:45:53 BoogieIcfgContainer [2022-01-18 02:45:53,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 02:45:53,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 02:45:53,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 02:45:53,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 02:45:53,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 02:45:52" (1/3) ... [2022-01-18 02:45:53,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cd2c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:45:53, skipping insertion in model container [2022-01-18 02:45:53,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:45:53" (2/3) ... [2022-01-18 02:45:53,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cd2c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:45:53, skipping insertion in model container [2022-01-18 02:45:53,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:45:53" (3/3) ... [2022-01-18 02:45:53,606 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2022-01-18 02:45:53,611 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 02:45:53,611 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 02:45:53,611 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 02:45:53,611 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 02:45:53,662 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,662 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,662 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,664 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,665 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,666 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,667 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,668 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,669 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,670 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,671 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,672 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,673 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,673 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,674 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,675 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,676 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,677 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,677 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,677 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,677 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,681 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,682 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,684 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,685 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,685 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,685 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:45:53,689 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 02:45:53,729 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 02:45:53,734 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 02:45:53,734 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 02:45:53,742 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 132 places, 136 transitions, 288 flow [2022-01-18 02:45:53,801 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 490 states, 489 states have (on average 2.5848670756646217) internal successors, (1264), 489 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:53,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 490 states, 489 states have (on average 2.5848670756646217) internal successors, (1264), 489 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:53,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-18 02:45:53,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:53,821 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] [2022-01-18 02:45:53,822 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash -90218077, now seen corresponding path program 1 times [2022-01-18 02:45:53,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:53,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508121904] [2022-01-18 02:45:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:53,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:54,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:54,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508121904] [2022-01-18 02:45:54,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508121904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:45:54,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:45:54,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 02:45:54,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135685155] [2022-01-18 02:45:54,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:45:54,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 02:45:54,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:54,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 02:45:54,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:45:54,072 INFO L87 Difference]: Start difference. First operand has 490 states, 489 states have (on average 2.5848670756646217) internal successors, (1264), 489 states have internal predecessors, (1264), 0 states have call successors, (0), 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 48.5) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:54,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:54,123 INFO L93 Difference]: Finished difference Result 490 states and 1135 transitions. [2022-01-18 02:45:54,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 02:45:54,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-01-18 02:45:54,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:54,145 INFO L225 Difference]: With dead ends: 490 [2022-01-18 02:45:54,145 INFO L226 Difference]: Without dead ends: 486 [2022-01-18 02:45:54,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:45:54,153 INFO L933 BasicCegarLoop]: 110 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, 110 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:54,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:45:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-01-18 02:45:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2022-01-18 02:45:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 2.331958762886598) internal successors, (1131), 485 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:54,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1131 transitions. [2022-01-18 02:45:54,238 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1131 transitions. Word has length 97 [2022-01-18 02:45:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:54,239 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1131 transitions. [2022-01-18 02:45:54,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.5) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1131 transitions. [2022-01-18 02:45:54,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-18 02:45:54,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:54,247 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] [2022-01-18 02:45:54,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 02:45:54,248 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:54,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash 751312825, now seen corresponding path program 1 times [2022-01-18 02:45:54,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:54,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54735927] [2022-01-18 02:45:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:54,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:54,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:54,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:54,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54735927] [2022-01-18 02:45:54,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54735927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:45:54,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:45:54,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 02:45:54,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384746836] [2022-01-18 02:45:54,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:45:54,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 02:45:54,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:54,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 02:45:54,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 02:45:54,476 INFO L87 Difference]: Start difference. First operand 486 states and 1131 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:54,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:54,593 INFO L93 Difference]: Finished difference Result 579 states and 1299 transitions. [2022-01-18 02:45:54,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 02:45:54,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-18 02:45:54,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:54,598 INFO L225 Difference]: With dead ends: 579 [2022-01-18 02:45:54,598 INFO L226 Difference]: Without dead ends: 492 [2022-01-18 02:45:54,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-18 02:45:54,600 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 226 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:54,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 333 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:45:54,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-01-18 02:45:54,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 487. [2022-01-18 02:45:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 2.3292181069958846) internal successors, (1132), 486 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1132 transitions. [2022-01-18 02:45:54,614 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1132 transitions. Word has length 100 [2022-01-18 02:45:54,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:54,615 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 1132 transitions. [2022-01-18 02:45:54,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:54,615 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1132 transitions. [2022-01-18 02:45:54,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-18 02:45:54,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:54,617 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] [2022-01-18 02:45:54,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 02:45:54,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:54,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:54,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2074297026, now seen corresponding path program 1 times [2022-01-18 02:45:54,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:54,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390980130] [2022-01-18 02:45:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:54,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:45:54,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:54,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390980130] [2022-01-18 02:45:54,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390980130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:45:54,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:45:54,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 02:45:54,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530082666] [2022-01-18 02:45:54,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:45:54,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 02:45:54,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:54,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 02:45:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 02:45:54,737 INFO L87 Difference]: Start difference. First operand 487 states and 1132 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:54,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:54,767 INFO L93 Difference]: Finished difference Result 521 states and 1214 transitions. [2022-01-18 02:45:54,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 02:45:54,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-18 02:45:54,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:54,771 INFO L225 Difference]: With dead ends: 521 [2022-01-18 02:45:54,771 INFO L226 Difference]: Without dead ends: 521 [2022-01-18 02:45:54,771 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 [2022-01-18 02:45:54,772 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 3 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:54,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 164 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:45:54,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-01-18 02:45:54,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2022-01-18 02:45:54,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.3346153846153848) internal successors, (1214), 520 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1214 transitions. [2022-01-18 02:45:54,786 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1214 transitions. Word has length 107 [2022-01-18 02:45:54,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:54,786 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 1214 transitions. [2022-01-18 02:45:54,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:54,787 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1214 transitions. [2022-01-18 02:45:54,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-18 02:45:54,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:54,797 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] [2022-01-18 02:45:54,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 02:45:54,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:54,800 INFO L85 PathProgramCache]: Analyzing trace with hash -940192228, now seen corresponding path program 2 times [2022-01-18 02:45:54,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:54,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398750666] [2022-01-18 02:45:54,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:54,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:55,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:45:55,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:55,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398750666] [2022-01-18 02:45:55,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398750666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:45:55,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:45:55,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-18 02:45:55,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082907696] [2022-01-18 02:45:55,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:45:55,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 02:45:55,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 02:45:55,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-18 02:45:55,180 INFO L87 Difference]: Start difference. First operand 521 states and 1214 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:55,327 INFO L93 Difference]: Finished difference Result 856 states and 2027 transitions. [2022-01-18 02:45:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 02:45:55,328 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-18 02:45:55,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:55,332 INFO L225 Difference]: With dead ends: 856 [2022-01-18 02:45:55,332 INFO L226 Difference]: Without dead ends: 805 [2022-01-18 02:45:55,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-01-18 02:45:55,334 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 171 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:55,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 661 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:45:55,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-18 02:45:55,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 614. [2022-01-18 02:45:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 2.3148450244698204) internal successors, (1419), 613 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1419 transitions. [2022-01-18 02:45:55,352 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1419 transitions. Word has length 107 [2022-01-18 02:45:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:55,352 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 1419 transitions. [2022-01-18 02:45:55,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:55,353 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1419 transitions. [2022-01-18 02:45:55,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-18 02:45:55,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:55,355 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:55,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 02:45:55,355 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:55,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:55,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1596238760, now seen corresponding path program 1 times [2022-01-18 02:45:55,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:55,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739551686] [2022-01-18 02:45:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:55,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:55,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:55,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739551686] [2022-01-18 02:45:55,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739551686] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:55,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053640341] [2022-01-18 02:45:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:55,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:55,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:55,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:55,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 02:45:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:55,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 02:45:55,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:55,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:45:55,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 02:45:55,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053640341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:45:55,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 02:45:55,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 12 [2022-01-18 02:45:55,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813160409] [2022-01-18 02:45:55,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:45:55,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 02:45:55,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:55,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 02:45:55,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-01-18 02:45:55,929 INFO L87 Difference]: Start difference. First operand 614 states and 1419 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:55,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:55,987 INFO L93 Difference]: Finished difference Result 1238 states and 3016 transitions. [2022-01-18 02:45:55,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 02:45:55,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 111 [2022-01-18 02:45:55,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:55,993 INFO L225 Difference]: With dead ends: 1238 [2022-01-18 02:45:55,993 INFO L226 Difference]: Without dead ends: 1097 [2022-01-18 02:45:55,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-01-18 02:45:55,995 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 114 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:55,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 211 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:45:55,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-01-18 02:45:56,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 837. [2022-01-18 02:45:56,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 836 states have (on average 2.5047846889952154) internal successors, (2094), 836 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:56,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 2094 transitions. [2022-01-18 02:45:56,016 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 2094 transitions. Word has length 111 [2022-01-18 02:45:56,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:56,016 INFO L470 AbstractCegarLoop]: Abstraction has 837 states and 2094 transitions. [2022-01-18 02:45:56,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:56,017 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 2094 transitions. [2022-01-18 02:45:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 02:45:56,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:56,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:56,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 02:45:56,241 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 [2022-01-18 02:45:56,242 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:56,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash 891713281, now seen corresponding path program 1 times [2022-01-18 02:45:56,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:56,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140596824] [2022-01-18 02:45:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:56,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:56,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:56,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140596824] [2022-01-18 02:45:56,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140596824] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:56,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573230713] [2022-01-18 02:45:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:56,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:56,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:56,382 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:56,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 02:45:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:56,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 02:45:56,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:56,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:57,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573230713] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:57,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:57,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 02:45:57,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469904940] [2022-01-18 02:45:57,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:57,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 02:45:57,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 02:45:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-01-18 02:45:57,262 INFO L87 Difference]: Start difference. First operand 837 states and 2094 transitions. Second operand has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:57,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:57,472 INFO L93 Difference]: Finished difference Result 1194 states and 2907 transitions. [2022-01-18 02:45:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 02:45:57,473 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 0 states have call successors, (0), 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 112 [2022-01-18 02:45:57,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:57,477 INFO L225 Difference]: With dead ends: 1194 [2022-01-18 02:45:57,477 INFO L226 Difference]: Without dead ends: 849 [2022-01-18 02:45:57,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-01-18 02:45:57,481 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 583 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:57,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 908 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:45:57,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-01-18 02:45:57,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 844. [2022-01-18 02:45:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 2.4922894424673783) internal successors, (2101), 843 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 2101 transitions. [2022-01-18 02:45:57,503 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 2101 transitions. Word has length 112 [2022-01-18 02:45:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:57,503 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 2101 transitions. [2022-01-18 02:45:57,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 2101 transitions. [2022-01-18 02:45:57,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-18 02:45:57,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:57,506 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:57,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 02:45:57,723 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,SelfDestructingSolverStorable5 [2022-01-18 02:45:57,724 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:57,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1610634378, now seen corresponding path program 2 times [2022-01-18 02:45:57,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:57,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835509662] [2022-01-18 02:45:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:57,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:58,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:58,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:58,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835509662] [2022-01-18 02:45:58,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835509662] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:58,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782291149] [2022-01-18 02:45:58,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:45:58,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:58,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:58,622 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:58,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 02:45:58,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:45:58,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:58,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-18 02:45:58,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:59,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:45:59,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:45:59,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:46:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:00,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:46:00,476 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:46:00,477 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 45 treesize of output 45 [2022-01-18 02:46:00,481 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 24 treesize of output 18 [2022-01-18 02:46:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:02,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782291149] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:46:02,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:46:02,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 21] total 59 [2022-01-18 02:46:02,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386679500] [2022-01-18 02:46:02,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:46:02,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-18 02:46:02,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:46:02,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-18 02:46:02,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3032, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 02:46:02,121 INFO L87 Difference]: Start difference. First operand 844 states and 2101 transitions. Second operand has 59 states, 59 states have (on average 4.932203389830509) internal successors, (291), 59 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:46:04,813 INFO L93 Difference]: Finished difference Result 2577 states and 6519 transitions. [2022-01-18 02:46:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 02:46:04,813 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.932203389830509) internal successors, (291), 59 states have internal predecessors, (291), 0 states have call successors, (0), 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 119 [2022-01-18 02:46:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:46:04,823 INFO L225 Difference]: With dead ends: 2577 [2022-01-18 02:46:04,824 INFO L226 Difference]: Without dead ends: 2051 [2022-01-18 02:46:04,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1481, Invalid=7075, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 02:46:04,827 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 2899 mSDsluCounter, 3771 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2899 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:46:04,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2899 Valid, 3676 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1560 Invalid, 0 Unknown, 109 Unchecked, 0.9s Time] [2022-01-18 02:46:04,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2022-01-18 02:46:04,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1455. [2022-01-18 02:46:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 2.5536451169188448) internal successors, (3713), 1454 states have internal predecessors, (3713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 3713 transitions. [2022-01-18 02:46:04,875 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 3713 transitions. Word has length 119 [2022-01-18 02:46:04,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:46:04,875 INFO L470 AbstractCegarLoop]: Abstraction has 1455 states and 3713 transitions. [2022-01-18 02:46:04,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.932203389830509) internal successors, (291), 59 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:04,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 3713 transitions. [2022-01-18 02:46:04,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-18 02:46:04,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:46:04,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:46:04,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 02:46:05,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:05,102 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:46:05,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:46:05,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1403854876, now seen corresponding path program 3 times [2022-01-18 02:46:05,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:46:05,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210928244] [2022-01-18 02:46:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:46:05,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:46:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:05,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:46:05,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210928244] [2022-01-18 02:46:05,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210928244] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:46:05,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592439629] [2022-01-18 02:46:05,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:46:05,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:05,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:46:05,892 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:46:05,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 02:46:05,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:46:05,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:46:05,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 02:46:06,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:46:06,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:46:06,546 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:46:06,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:46:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:46:06,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:46:06,733 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_150 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_150) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 0))) is different from false [2022-01-18 02:46:06,780 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:46:06,781 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 45 treesize of output 45 [2022-01-18 02:46:06,791 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 24 treesize of output 18 [2022-01-18 02:46:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 1 not checked. [2022-01-18 02:46:07,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592439629] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:46:07,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:46:07,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 12] total 41 [2022-01-18 02:46:07,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510932312] [2022-01-18 02:46:07,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:46:07,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:46:07,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:46:07,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:46:07,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1460, Unknown=1, NotChecked=76, Total=1640 [2022-01-18 02:46:07,328 INFO L87 Difference]: Start difference. First operand 1455 states and 3713 transitions. Second operand has 41 states, 41 states have (on average 6.853658536585366) internal successors, (281), 41 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:10,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:46:10,737 INFO L93 Difference]: Finished difference Result 2095 states and 5291 transitions. [2022-01-18 02:46:10,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 02:46:10,738 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.853658536585366) internal successors, (281), 41 states have internal predecessors, (281), 0 states have call successors, (0), 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 119 [2022-01-18 02:46:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:46:10,746 INFO L225 Difference]: With dead ends: 2095 [2022-01-18 02:46:10,747 INFO L226 Difference]: Without dead ends: 2095 [2022-01-18 02:46:10,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=784, Invalid=4475, Unknown=1, NotChecked=142, Total=5402 [2022-01-18 02:46:10,749 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 2068 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:46:10,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2068 Valid, 2584 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1080 Invalid, 0 Unknown, 187 Unchecked, 0.6s Time] [2022-01-18 02:46:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states. [2022-01-18 02:46:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1394. [2022-01-18 02:46:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 2.5233309404163675) internal successors, (3515), 1393 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 3515 transitions. [2022-01-18 02:46:10,792 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 3515 transitions. Word has length 119 [2022-01-18 02:46:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:46:10,792 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 3515 transitions. [2022-01-18 02:46:10,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.853658536585366) internal successors, (281), 41 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 3515 transitions. [2022-01-18 02:46:10,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:46:10,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:46:10,796 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:46:10,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 02:46:11,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:11,015 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:46:11,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:46:11,016 INFO L85 PathProgramCache]: Analyzing trace with hash -871935768, now seen corresponding path program 1 times [2022-01-18 02:46:11,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:46:11,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851421859] [2022-01-18 02:46:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:46:11,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:46:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:12,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:46:12,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851421859] [2022-01-18 02:46:12,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851421859] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:46:12,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842835655] [2022-01-18 02:46:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:46:12,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:12,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:46:12,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:46:12,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 02:46:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:12,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-18 02:46:12,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:46:12,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:46:12,527 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:46:12,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:46:13,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:46:14,101 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 02:46:14,101 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 24 treesize of output 10 [2022-01-18 02:46:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:14,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:46:15,296 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:46:15,297 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 111 treesize of output 95 [2022-01-18 02:46:15,302 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 67 treesize of output 49 [2022-01-18 02:46:17,370 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:46:17,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:17,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842835655] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:46:17,402 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:46:17,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 84 [2022-01-18 02:46:17,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700883785] [2022-01-18 02:46:17,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:46:17,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-18 02:46:17,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:46:17,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-18 02:46:17,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=6428, Unknown=4, NotChecked=0, Total=6972 [2022-01-18 02:46:17,405 INFO L87 Difference]: Start difference. First operand 1394 states and 3515 transitions. Second operand has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:46:22,093 INFO L93 Difference]: Finished difference Result 2314 states and 5758 transitions. [2022-01-18 02:46:22,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 02:46:22,094 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 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 123 [2022-01-18 02:46:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:46:22,103 INFO L225 Difference]: With dead ends: 2314 [2022-01-18 02:46:22,103 INFO L226 Difference]: Without dead ends: 1985 [2022-01-18 02:46:22,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 196 SyntacticMatches, 15 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5359 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1756, Invalid=15269, Unknown=5, NotChecked=0, Total=17030 [2022-01-18 02:46:22,107 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 2281 mSDsluCounter, 6048 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 5650 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1160 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:46:22,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2281 Valid, 5650 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1469 Invalid, 0 Unknown, 1160 Unchecked, 0.8s Time] [2022-01-18 02:46:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-01-18 02:46:22,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1489. [2022-01-18 02:46:22,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1488 states have (on average 2.5268817204301075) internal successors, (3760), 1488 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 3760 transitions. [2022-01-18 02:46:22,146 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 3760 transitions. Word has length 123 [2022-01-18 02:46:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:46:22,146 INFO L470 AbstractCegarLoop]: Abstraction has 1489 states and 3760 transitions. [2022-01-18 02:46:22,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.607142857142857) internal successors, (303), 84 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 3760 transitions. [2022-01-18 02:46:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:46:22,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:46:22,150 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:46:22,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-18 02:46:22,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:22,363 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:46:22,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:46:22,364 INFO L85 PathProgramCache]: Analyzing trace with hash 365129222, now seen corresponding path program 2 times [2022-01-18 02:46:22,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:46:22,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767595831] [2022-01-18 02:46:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:46:22,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:46:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:23,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:46:23,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767595831] [2022-01-18 02:46:23,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767595831] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:46:23,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695069611] [2022-01-18 02:46:23,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:46:23,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:23,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:46:23,460 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:46:23,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 02:46:23,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:46:23,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:46:23,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-18 02:46:23,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:46:24,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:46:24,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:46:25,086 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 25 treesize of output 7 [2022-01-18 02:46:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:25,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:46:26,101 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:46:26,101 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 82 treesize of output 74 [2022-01-18 02:46:26,105 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 53 treesize of output 47 [2022-01-18 02:46:26,107 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 47 treesize of output 41 [2022-01-18 02:46:28,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:28,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695069611] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:46:28,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:46:28,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31, 31] total 84 [2022-01-18 02:46:28,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139967033] [2022-01-18 02:46:28,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:46:28,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-18 02:46:28,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:46:28,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-18 02:46:28,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=6532, Unknown=20, NotChecked=0, Total=6972 [2022-01-18 02:46:28,114 INFO L87 Difference]: Start difference. First operand 1489 states and 3760 transitions. Second operand has 84 states, 84 states have (on average 3.75) internal successors, (315), 84 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:32,204 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_~q_front~0 1))) (let ((.cse0 (< .cse3 0)) (.cse1 (<= c_~n~0 .cse3)) (.cse2 (and (forall ((v_ArrVal_209 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_209) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0)) (forall ((v_ArrVal_209 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_209) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))))) (and (= (select |c_#valid| |c_ULTIMATE.start_main_~#t2~0#1.base|) 1) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|) (or .cse0 .cse1 (< (+ |c_thread1Thread1of1ForFork1_#t~post1#1| 1) c_~N~0) .cse2) (or .cse0 .cse1 (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) .cse2) (= c_~s~0 0)))) is different from false [2022-01-18 02:46:34,140 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse13 (* c_~q_front~0 4))) (let ((.cse17 (+ c_~q_front~0 1)) (.cse11 (<= 0 c_~s~0)) (.cse16 (forall ((|ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| Int)) (= (+ (* c_~q_front~0 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ (* 4 c_~q_back~0) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (.cse14 (<= c_~s~0 0)) (.cse10 (+ .cse13 c_~q~0.offset)) (.cse12 (* 4 c_~q_back~0))) (let ((.cse4 (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~q~0.base))) (.cse6 (= .cse10 (+ c_~q~0.offset .cse12))) (.cse8 (and .cse11 .cse16 .cse14 (<= |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|))) (.cse15 (+ c_~N~0 |c_thread2Thread1of1ForFork0_~j~0#1|)) (.cse5 (+ c_~s~0 1)) (.cse1 (not (<= 0 c_~q_back~0))) (.cse2 (not (< c_~q_back~0 c_~n~0))) (.cse7 (< 2 |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (.cse0 (< .cse17 0)) (.cse3 (<= c_~n~0 .cse17))) (and (or .cse0 .cse1 .cse2 .cse3 (and .cse4 (<= c_~N~0 .cse5) (<= .cse5 c_~N~0) .cse6) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0)) (or .cse0 .cse1 .cse2 .cse3 .cse7 .cse8) (or .cse0 .cse1 .cse2 .cse3 (and (<= c_~s~0 |c_thread1Thread1of1ForFork1_~i~0#1|) .cse4 .cse6 (<= |c_thread1Thread1of1ForFork1_~i~0#1| c_~s~0))) (or .cse0 .cse3 (let ((.cse9 (+ c_~s~0 (select (select |c_#memory_int| c_~q~0.base) .cse10)))) (and (<= c_~N~0 .cse9) (<= .cse9 c_~N~0)))) (or .cse0 .cse1 .cse2 .cse3 (and .cse11 (= (+ .cse12 |c_ULTIMATE.start_main_#t~ret11#1.offset|) (+ .cse13 |c_ULTIMATE.start_main_#t~ret11#1.offset|)) .cse14 (not (<= |c_ULTIMATE.start_main_~#t2~0#1.base| |c_ULTIMATE.start_main_#t~ret11#1.base|)))) (or .cse0 .cse1 .cse2 .cse3 (< 2 |c_ULTIMATE.start_create_fresh_int_array_#in~size#1|) .cse8) (or .cse0 .cse1 .cse2 .cse3 (and .cse11 (< |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|) .cse14 (= (+ .cse13 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (+ .cse12 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (= c_~s~0 1) (<= .cse5 .cse15) (<= c_~N~0 1) (or .cse0 .cse1 (and .cse11 .cse4 .cse14 .cse6) .cse2 .cse3) (or (<= 1 c_~q_front~0) .cse0 .cse1 (<= 2 c_~q_back~0) .cse8) (or .cse0 .cse1 (and .cse11 .cse16 (< |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|) .cse14) .cse2 .cse3) (< 0 c_~N~0) (= |c_thread2Thread1of1ForFork0_~j~0#1| 1) (= c_~q~0.offset 0) (<= .cse15 .cse5) (or .cse0 .cse1 .cse2 .cse3 (and .cse11 .cse16 .cse14 (< |c_ULTIMATE.start_create_fresh_int_array_#t~malloc18#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|)) .cse7) (or .cse0 .cse3 (and (forall ((v_ArrVal_209 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_209) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0)) (forall ((v_ArrVal_209 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_209) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))))))))) is different from false [2022-01-18 02:46:35,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:46:35,725 INFO L93 Difference]: Finished difference Result 2790 states and 6789 transitions. [2022-01-18 02:46:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 02:46:35,726 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.75) internal successors, (315), 84 states have internal predecessors, (315), 0 states have call successors, (0), 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 123 [2022-01-18 02:46:35,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:46:35,736 INFO L225 Difference]: With dead ends: 2790 [2022-01-18 02:46:35,736 INFO L226 Difference]: Without dead ends: 2396 [2022-01-18 02:46:35,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 207 SyntacticMatches, 13 SemanticMatches, 148 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7280 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=2164, Invalid=19564, Unknown=36, NotChecked=586, Total=22350 [2022-01-18 02:46:35,741 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 3105 mSDsluCounter, 9185 mSDsCounter, 0 mSdLazyCounter, 3585 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3105 SdHoareTripleChecker+Valid, 8389 SdHoareTripleChecker+Invalid, 6334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 3585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2533 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:46:35,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3105 Valid, 8389 Invalid, 6334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 3585 Invalid, 0 Unknown, 2533 Unchecked, 1.7s Time] [2022-01-18 02:46:35,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2022-01-18 02:46:35,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 1748. [2022-01-18 02:46:35,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1747 states have (on average 2.483686319404694) internal successors, (4339), 1747 states have internal predecessors, (4339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:35,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 4339 transitions. [2022-01-18 02:46:35,786 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 4339 transitions. Word has length 123 [2022-01-18 02:46:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:46:35,786 INFO L470 AbstractCegarLoop]: Abstraction has 1748 states and 4339 transitions. [2022-01-18 02:46:35,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.75) internal successors, (315), 84 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 4339 transitions. [2022-01-18 02:46:35,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:46:35,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:46:35,791 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:46:35,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 02:46:36,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:36,008 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:46:36,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:46:36,008 INFO L85 PathProgramCache]: Analyzing trace with hash -854331734, now seen corresponding path program 3 times [2022-01-18 02:46:36,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:46:36,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028298868] [2022-01-18 02:46:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:46:36,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:46:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:37,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:46:37,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028298868] [2022-01-18 02:46:37,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028298868] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:46:37,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019113332] [2022-01-18 02:46:37,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:46:37,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:46:37,316 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:46:37,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 02:46:37,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:46:37,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:46:37,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-18 02:46:37,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:46:37,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:46:37,568 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:46:37,568 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:46:38,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:46:38,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:46:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:46:38,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:46:39,386 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:46:39,386 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 111 treesize of output 95 [2022-01-18 02:46:39,391 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 67 treesize of output 49 [2022-01-18 02:46:40,358 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:46:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:46:40,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019113332] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:46:40,393 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:46:40,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 23, 23] total 63 [2022-01-18 02:46:40,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718717415] [2022-01-18 02:46:40,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:46:40,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-18 02:46:40,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:46:40,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-18 02:46:40,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3681, Unknown=6, NotChecked=0, Total=3906 [2022-01-18 02:46:40,397 INFO L87 Difference]: Start difference. First operand 1748 states and 4339 transitions. Second operand has 63 states, 63 states have (on average 4.238095238095238) internal successors, (267), 63 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:49,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:46:49,329 INFO L93 Difference]: Finished difference Result 3531 states and 8806 transitions. [2022-01-18 02:46:49,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 02:46:49,330 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.238095238095238) internal successors, (267), 63 states have internal predecessors, (267), 0 states have call successors, (0), 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 123 [2022-01-18 02:46:49,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:46:49,343 INFO L225 Difference]: With dead ends: 3531 [2022-01-18 02:46:49,343 INFO L226 Difference]: Without dead ends: 3297 [2022-01-18 02:46:49,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 232 SyntacticMatches, 13 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6380 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1732, Invalid=19720, Unknown=10, NotChecked=0, Total=21462 [2022-01-18 02:46:49,346 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 2927 mSDsluCounter, 7180 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2927 SdHoareTripleChecker+Valid, 6736 SdHoareTripleChecker+Invalid, 4950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 676 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:46:49,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2927 Valid, 6736 Invalid, 4950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 3926 Invalid, 0 Unknown, 676 Unchecked, 1.8s Time] [2022-01-18 02:46:49,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2022-01-18 02:46:49,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 1788. [2022-01-18 02:46:49,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1787 states have (on average 2.4829322887520986) internal successors, (4437), 1787 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:49,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 4437 transitions. [2022-01-18 02:46:49,397 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 4437 transitions. Word has length 123 [2022-01-18 02:46:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:46:49,397 INFO L470 AbstractCegarLoop]: Abstraction has 1788 states and 4437 transitions. [2022-01-18 02:46:49,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.238095238095238) internal successors, (267), 63 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:46:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 4437 transitions. [2022-01-18 02:46:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:46:49,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:46:49,401 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:46:49,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 02:46:49,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:49,621 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:46:49,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:46:49,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1340828470, now seen corresponding path program 4 times [2022-01-18 02:46:49,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:46:49,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567775217] [2022-01-18 02:46:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:46:49,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:46:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:46:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:50,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:46:50,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567775217] [2022-01-18 02:46:50,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567775217] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:46:50,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917196395] [2022-01-18 02:46:50,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:46:50,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:46:50,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:46:50,726 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:46:50,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 02:46:50,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:46:50,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:46:50,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 63 conjunts are in the unsatisfiable core [2022-01-18 02:46:50,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:46:52,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:46:52,557 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 02:46:52,722 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 02:46:52,722 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 24 treesize of output 10 [2022-01-18 02:46:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:53,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:46:53,880 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:46:53,880 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 111 treesize of output 95 [2022-01-18 02:46:53,890 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 67 treesize of output 49 [2022-01-18 02:46:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:46:56,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917196395] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:46:56,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:46:56,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 36, 35] total 91 [2022-01-18 02:46:56,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030391454] [2022-01-18 02:46:56,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:46:56,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-18 02:46:56,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:46:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-18 02:46:56,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=636, Invalid=7550, Unknown=4, NotChecked=0, Total=8190 [2022-01-18 02:46:56,029 INFO L87 Difference]: Start difference. First operand 1788 states and 4437 transitions. Second operand has 91 states, 91 states have (on average 3.32967032967033) internal successors, (303), 91 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:06,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:47:06,555 INFO L93 Difference]: Finished difference Result 3683 states and 9251 transitions. [2022-01-18 02:47:06,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-18 02:47:06,555 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.32967032967033) internal successors, (303), 91 states have internal predecessors, (303), 0 states have call successors, (0), 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 123 [2022-01-18 02:47:06,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:47:06,570 INFO L225 Difference]: With dead ends: 3683 [2022-01-18 02:47:06,570 INFO L226 Difference]: Without dead ends: 3399 [2022-01-18 02:47:06,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 187 SyntacticMatches, 10 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10884 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=3397, Invalid=29171, Unknown=12, NotChecked=0, Total=32580 [2022-01-18 02:47:06,573 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 4061 mSDsluCounter, 9734 mSDsCounter, 0 mSdLazyCounter, 5307 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4061 SdHoareTripleChecker+Valid, 9063 SdHoareTripleChecker+Invalid, 6874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 5307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1113 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:47:06,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4061 Valid, 9063 Invalid, 6874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 5307 Invalid, 0 Unknown, 1113 Unchecked, 2.4s Time] [2022-01-18 02:47:06,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3399 states. [2022-01-18 02:47:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3399 to 1814. [2022-01-18 02:47:06,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1813 states have (on average 2.490899062327634) internal successors, (4516), 1813 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 4516 transitions. [2022-01-18 02:47:06,625 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 4516 transitions. Word has length 123 [2022-01-18 02:47:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:47:06,625 INFO L470 AbstractCegarLoop]: Abstraction has 1814 states and 4516 transitions. [2022-01-18 02:47:06,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.32967032967033) internal successors, (303), 91 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 4516 transitions. [2022-01-18 02:47:06,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:47:06,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:47:06,630 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:47:06,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 02:47:06,843 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,SelfDestructingSolverStorable11 [2022-01-18 02:47:06,844 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:47:06,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:47:06,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1076103478, now seen corresponding path program 5 times [2022-01-18 02:47:06,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:47:06,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019233395] [2022-01-18 02:47:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:47:06,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:47:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:08,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:47:08,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019233395] [2022-01-18 02:47:08,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019233395] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:47:08,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156716019] [2022-01-18 02:47:08,482 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:47:08,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:47:08,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:47:08,483 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:47:08,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 02:47:08,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:47:08,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:47:08,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-18 02:47:08,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:47:08,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:47:08,815 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:47:08,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:47:09,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:47:09,561 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:47:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:47:09,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:47:10,297 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:47:10,297 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 82 treesize of output 74 [2022-01-18 02:47:10,300 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 53 treesize of output 47 [2022-01-18 02:47:10,302 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 47 treesize of output 41 [2022-01-18 02:47:11,151 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:47:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:47:11,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156716019] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:47:11,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:47:11,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 22, 22] total 66 [2022-01-18 02:47:11,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803668277] [2022-01-18 02:47:11,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:47:11,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-01-18 02:47:11,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:47:11,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-01-18 02:47:11,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=4067, Unknown=2, NotChecked=0, Total=4290 [2022-01-18 02:47:11,175 INFO L87 Difference]: Start difference. First operand 1814 states and 4516 transitions. Second operand has 66 states, 66 states have (on average 4.196969696969697) internal successors, (277), 66 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) [2022-01-18 02:47:19,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:47:19,067 INFO L93 Difference]: Finished difference Result 3752 states and 9231 transitions. [2022-01-18 02:47:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 02:47:19,067 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.196969696969697) internal successors, (277), 66 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 123 [2022-01-18 02:47:19,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:47:19,075 INFO L225 Difference]: With dead ends: 3752 [2022-01-18 02:47:19,075 INFO L226 Difference]: Without dead ends: 3329 [2022-01-18 02:47:19,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 220 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5198 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1694, Invalid=18896, Unknown=2, NotChecked=0, Total=20592 [2022-01-18 02:47:19,077 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 2420 mSDsluCounter, 9102 mSDsCounter, 0 mSdLazyCounter, 4780 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 8447 SdHoareTripleChecker+Invalid, 5807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 4780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 840 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:47:19,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2420 Valid, 8447 Invalid, 5807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 4780 Invalid, 0 Unknown, 840 Unchecked, 2.0s Time] [2022-01-18 02:47:19,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2022-01-18 02:47:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 1751. [2022-01-18 02:47:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1750 states have (on average 2.513714285714286) internal successors, (4399), 1750 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 4399 transitions. [2022-01-18 02:47:19,125 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 4399 transitions. Word has length 123 [2022-01-18 02:47:19,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:47:19,125 INFO L470 AbstractCegarLoop]: Abstraction has 1751 states and 4399 transitions. [2022-01-18 02:47:19,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.196969696969697) internal successors, (277), 66 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) [2022-01-18 02:47:19,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 4399 transitions. [2022-01-18 02:47:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:47:19,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:47:19,129 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:47:19,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 02:47:19,343 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,SelfDestructingSolverStorable12 [2022-01-18 02:47:19,344 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:47:19,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:47:19,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1294464682, now seen corresponding path program 6 times [2022-01-18 02:47:19,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:47:19,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728810125] [2022-01-18 02:47:19,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:47:19,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:47:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:21,092 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:21,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:47:21,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728810125] [2022-01-18 02:47:21,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728810125] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:47:21,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335216474] [2022-01-18 02:47:21,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:47:21,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:47:21,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:47:21,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:47:21,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 02:47:21,173 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:47:21,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:47:21,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-18 02:47:21,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:47:21,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:47:21,543 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:47:21,544 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:47:21,719 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 [2022-01-18 02:47:21,892 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 [2022-01-18 02:47:22,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:47:22,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:47:22,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:47:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:23,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:47:26,384 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 02:47:26,384 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 2 case distinctions, treesize of input 112 treesize of output 88 [2022-01-18 02:47:26,416 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:47:26,416 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 305 treesize of output 353 [2022-01-18 02:47:26,430 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:47:26,431 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 353 treesize of output 345 [2022-01-18 02:47:26,443 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 197 treesize of output 185 [2022-01-18 02:47:26,452 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 185 treesize of output 161 [2022-01-18 02:47:29,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:47:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:29,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335216474] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:47:29,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:47:29,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 33, 34] total 94 [2022-01-18 02:47:29,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410296612] [2022-01-18 02:47:29,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:47:29,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-18 02:47:29,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:47:29,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-18 02:47:29,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=8091, Unknown=80, NotChecked=0, Total=8742 [2022-01-18 02:47:29,568 INFO L87 Difference]: Start difference. First operand 1751 states and 4399 transitions. Second operand has 94 states, 94 states have (on average 3.3404255319148937) internal successors, (314), 94 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:47,557 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (* 4 c_~q_back~0))) (let ((.cse3 (+ c_~q~0.offset .cse6))) (let ((.cse2 (* c_~q_front~0 4)) (.cse0 (not (= (select (select |c_#memory_int| c_~q~0.base) .cse3) 1))) (.cse4 (< c_~q_back~0 0)) (.cse7 (<= c_~n~0 (+ c_~q_back~0 1)))) (and (or (and (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| c_~q~0.base)) (or .cse0 (let ((.cse1 (+ .cse2 c_~q~0.offset))) (and (or (<= .cse1 0) (<= (+ c_~q_front~0 c_~n~0) (+ 2 c_~q_back~0))) (or (not (= .cse1 0)) (and (= c_~s~0 0) (or (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~q~0.base)) (not (<= 0 c_~N~0))))) (< 0 (+ .cse2 c_~q~0.offset 1)))))) (not (= .cse3 0))) (or (<= .cse3 0) (<= c_~n~0 2)) (= c_~q~0.offset 0) (or .cse4 (let ((.cse5 (< 2 |c_ULTIMATE.start_create_fresh_int_array_~size#1|))) (and (or (<= 0 c_~s~0) .cse5) (or .cse5 (= .cse2 .cse6)) (or .cse5 (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (<= c_~s~0 0) .cse5))) .cse7) (or (and (forall ((v_ArrVal_333 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) 1)) (forall ((v_ArrVal_333 (Array Int Int))) (<= 1 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_333) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))) .cse0 .cse4 .cse7))))) is different from false [2022-01-18 02:47:54,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:47:54,551 INFO L93 Difference]: Finished difference Result 3204 states and 7799 transitions. [2022-01-18 02:47:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-01-18 02:47:54,555 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.3404255319148937) internal successors, (314), 94 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-01-18 02:47:54,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:47:54,562 INFO L225 Difference]: With dead ends: 3204 [2022-01-18 02:47:54,562 INFO L226 Difference]: Without dead ends: 3070 [2022-01-18 02:47:54,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 209 SyntacticMatches, 40 SemanticMatches, 190 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12836 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=3650, Invalid=32445, Unknown=199, NotChecked=378, Total=36672 [2022-01-18 02:47:54,566 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 3686 mSDsluCounter, 8993 mSDsCounter, 0 mSdLazyCounter, 3637 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3686 SdHoareTripleChecker+Valid, 8266 SdHoareTripleChecker+Invalid, 7376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 3637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3397 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:47:54,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3686 Valid, 8266 Invalid, 7376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 3637 Invalid, 0 Unknown, 3397 Unchecked, 1.8s Time] [2022-01-18 02:47:54,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2022-01-18 02:47:54,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 1994. [2022-01-18 02:47:54,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 2.483692925238334) internal successors, (4950), 1993 states have internal predecessors, (4950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 4950 transitions. [2022-01-18 02:47:54,639 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 4950 transitions. Word has length 123 [2022-01-18 02:47:54,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:47:54,639 INFO L470 AbstractCegarLoop]: Abstraction has 1994 states and 4950 transitions. [2022-01-18 02:47:54,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.3404255319148937) internal successors, (314), 94 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:54,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 4950 transitions. [2022-01-18 02:47:54,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:47:54,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:47:54,644 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:47:54,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 02:47:54,866 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,SelfDestructingSolverStorable13 [2022-01-18 02:47:54,866 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:47:54,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:47:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash 581984166, now seen corresponding path program 7 times [2022-01-18 02:47:54,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:47:54,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334675302] [2022-01-18 02:47:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:47:54,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:47:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:55,794 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:55,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:47:55,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334675302] [2022-01-18 02:47:55,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334675302] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:47:55,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949969848] [2022-01-18 02:47:55,794 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:47:55,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:47:55,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:47:55,796 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:47:55,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 02:47:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:55,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-18 02:47:55,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:47:55,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:47:56,176 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:47:56,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:47:57,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:47:57,219 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 25 treesize of output 7 [2022-01-18 02:47:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:57,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:47:58,368 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:47:58,368 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 111 treesize of output 95 [2022-01-18 02:47:58,371 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 67 treesize of output 49 [2022-01-18 02:48:00,288 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:48:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:00,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949969848] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:00,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:00,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 86 [2022-01-18 02:48:00,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465165402] [2022-01-18 02:48:00,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:00,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 02:48:00,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:00,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 02:48:00,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=6756, Unknown=4, NotChecked=0, Total=7310 [2022-01-18 02:48:00,315 INFO L87 Difference]: Start difference. First operand 1994 states and 4950 transitions. Second operand has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:07,501 INFO L93 Difference]: Finished difference Result 3196 states and 7863 transitions. [2022-01-18 02:48:07,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 02:48:07,501 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 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 123 [2022-01-18 02:48:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:07,506 INFO L225 Difference]: With dead ends: 3196 [2022-01-18 02:48:07,507 INFO L226 Difference]: Without dead ends: 2745 [2022-01-18 02:48:07,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 196 SyntacticMatches, 13 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7183 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=2441, Invalid=20197, Unknown=12, NotChecked=0, Total=22650 [2022-01-18 02:48:07,509 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 2828 mSDsluCounter, 7267 mSDsCounter, 0 mSdLazyCounter, 3359 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2828 SdHoareTripleChecker+Valid, 6827 SdHoareTripleChecker+Invalid, 4647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 3359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1045 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:07,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2828 Valid, 6827 Invalid, 4647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 3359 Invalid, 0 Unknown, 1045 Unchecked, 1.4s Time] [2022-01-18 02:48:07,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2022-01-18 02:48:07,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 1973. [2022-01-18 02:48:07,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1972 states have (on average 2.483265720081136) internal successors, (4897), 1972 states have internal predecessors, (4897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 4897 transitions. [2022-01-18 02:48:07,548 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 4897 transitions. Word has length 123 [2022-01-18 02:48:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:07,548 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 4897 transitions. [2022-01-18 02:48:07,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:07,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 4897 transitions. [2022-01-18 02:48:07,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:48:07,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:07,552 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:48:07,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 02:48:07,767 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,SelfDestructingSolverStorable14 [2022-01-18 02:48:07,767 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:07,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:07,768 INFO L85 PathProgramCache]: Analyzing trace with hash 807967946, now seen corresponding path program 8 times [2022-01-18 02:48:07,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:07,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965709199] [2022-01-18 02:48:07,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:07,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:09,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:09,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965709199] [2022-01-18 02:48:09,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965709199] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:09,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830776736] [2022-01-18 02:48:09,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:48:09,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:09,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:09,013 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:09,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 02:48:09,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:48:09,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:48:09,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 67 conjunts are in the unsatisfiable core [2022-01-18 02:48:09,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:09,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:48:09,494 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:48:09,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:48:09,667 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 [2022-01-18 02:48:09,846 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 [2022-01-18 02:48:10,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:48:10,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:48:10,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:48:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:11,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:14,928 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 02:48:14,929 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 2 case distinctions, treesize of input 148 treesize of output 105 [2022-01-18 02:48:14,944 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:14,944 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 274 treesize of output 282 [2022-01-18 02:48:14,950 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 197 treesize of output 161 [2022-01-18 02:48:14,961 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:14,961 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 164 treesize of output 156 [2022-01-18 02:48:17,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:48:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:17,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830776736] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:17,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:17,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 34, 35] total 93 [2022-01-18 02:48:17,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612565367] [2022-01-18 02:48:17,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:17,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-01-18 02:48:17,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:17,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-01-18 02:48:17,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=620, Invalid=7865, Unknown=71, NotChecked=0, Total=8556 [2022-01-18 02:48:17,246 INFO L87 Difference]: Start difference. First operand 1973 states and 4897 transitions. Second operand has 93 states, 93 states have (on average 3.3978494623655915) internal successors, (316), 93 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:26,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:26,586 INFO L93 Difference]: Finished difference Result 2904 states and 7077 transitions. [2022-01-18 02:48:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 02:48:26,586 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 3.3978494623655915) internal successors, (316), 93 states have internal predecessors, (316), 0 states have call successors, (0), 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 123 [2022-01-18 02:48:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:26,592 INFO L225 Difference]: With dead ends: 2904 [2022-01-18 02:48:26,592 INFO L226 Difference]: Without dead ends: 2488 [2022-01-18 02:48:26,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 197 SyntacticMatches, 27 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8328 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=2680, Invalid=22664, Unknown=96, NotChecked=0, Total=25440 [2022-01-18 02:48:26,594 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 3089 mSDsluCounter, 7578 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3089 SdHoareTripleChecker+Valid, 7051 SdHoareTripleChecker+Invalid, 5071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2054 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:26,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3089 Valid, 7051 Invalid, 5071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2842 Invalid, 0 Unknown, 2054 Unchecked, 1.3s Time] [2022-01-18 02:48:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2022-01-18 02:48:26,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2019. [2022-01-18 02:48:26,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2018 states have (on average 2.480673934588702) internal successors, (5006), 2018 states have internal predecessors, (5006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 5006 transitions. [2022-01-18 02:48:26,632 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 5006 transitions. Word has length 123 [2022-01-18 02:48:26,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:26,632 INFO L470 AbstractCegarLoop]: Abstraction has 2019 states and 5006 transitions. [2022-01-18 02:48:26,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 3.3978494623655915) internal successors, (316), 93 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 5006 transitions. [2022-01-18 02:48:26,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:48:26,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:26,637 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:48:26,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 02:48:26,851 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,SelfDestructingSolverStorable15 [2022-01-18 02:48:26,852 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:26,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:26,852 INFO L85 PathProgramCache]: Analyzing trace with hash 349498376, now seen corresponding path program 9 times [2022-01-18 02:48:26,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:26,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420485244] [2022-01-18 02:48:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:26,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:28,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:28,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420485244] [2022-01-18 02:48:28,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420485244] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:28,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72989821] [2022-01-18 02:48:28,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:48:28,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:28,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:28,021 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:28,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 02:48:28,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:48:28,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:48:28,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-18 02:48:28,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:28,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:48:28,172 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 02:48:28,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-01-18 02:48:28,477 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 02:48:28,477 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-01-18 02:48:28,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-18 02:48:29,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:48:29,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:48:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:48:29,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:30,455 INFO L353 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-01-18 02:48:30,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 116 [2022-01-18 02:48:30,478 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:30,479 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 163 treesize of output 173 [2022-01-18 02:48:30,484 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 67 treesize of output 49 [2022-01-18 02:48:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:48:31,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72989821] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:31,418 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:31,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 25, 25] total 71 [2022-01-18 02:48:31,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777321157] [2022-01-18 02:48:31,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:31,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-18 02:48:31,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:31,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-18 02:48:31,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=4661, Unknown=7, NotChecked=0, Total=4970 [2022-01-18 02:48:31,419 INFO L87 Difference]: Start difference. First operand 2019 states and 5006 transitions. Second operand has 71 states, 71 states have (on average 4.267605633802817) internal successors, (303), 71 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:36,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:36,534 INFO L93 Difference]: Finished difference Result 3189 states and 7921 transitions. [2022-01-18 02:48:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 02:48:36,535 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.267605633802817) internal successors, (303), 71 states have internal predecessors, (303), 0 states have call successors, (0), 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 123 [2022-01-18 02:48:36,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:36,541 INFO L225 Difference]: With dead ends: 3189 [2022-01-18 02:48:36,541 INFO L226 Difference]: Without dead ends: 2765 [2022-01-18 02:48:36,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 207 SyntacticMatches, 4 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5234 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1542, Invalid=17357, Unknown=7, NotChecked=0, Total=18906 [2022-01-18 02:48:36,543 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 2401 mSDsluCounter, 5315 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 4973 SdHoareTripleChecker+Invalid, 3895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 925 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:36,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 4973 Invalid, 3895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2810 Invalid, 0 Unknown, 925 Unchecked, 1.2s Time] [2022-01-18 02:48:36,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2022-01-18 02:48:36,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2031. [2022-01-18 02:48:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2030 states have (on average 2.476354679802956) internal successors, (5027), 2030 states have internal predecessors, (5027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 5027 transitions. [2022-01-18 02:48:36,577 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 5027 transitions. Word has length 123 [2022-01-18 02:48:36,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:36,578 INFO L470 AbstractCegarLoop]: Abstraction has 2031 states and 5027 transitions. [2022-01-18 02:48:36,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.267605633802817) internal successors, (303), 71 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:36,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 5027 transitions. [2022-01-18 02:48:36,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:48:36,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:36,582 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:48:36,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 02:48:36,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 02:48:36,805 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:36,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1311724772, now seen corresponding path program 10 times [2022-01-18 02:48:36,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:36,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536547823] [2022-01-18 02:48:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:36,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:37,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:37,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536547823] [2022-01-18 02:48:37,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536547823] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:37,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065296094] [2022-01-18 02:48:37,812 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:48:37,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:37,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:37,813 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:37,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 02:48:37,887 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:48:37,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:48:37,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 02:48:37,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:39,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:48:39,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:48:39,242 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 25 treesize of output 7 [2022-01-18 02:48:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:39,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:40,348 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:40,349 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 111 treesize of output 95 [2022-01-18 02:48:40,353 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 67 treesize of output 49 [2022-01-18 02:48:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:42,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065296094] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:42,065 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:42,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 86 [2022-01-18 02:48:42,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156690342] [2022-01-18 02:48:42,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:42,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 02:48:42,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:42,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 02:48:42,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=6795, Unknown=2, NotChecked=0, Total=7310 [2022-01-18 02:48:42,067 INFO L87 Difference]: Start difference. First operand 2031 states and 5027 transitions. Second operand has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:51,642 INFO L93 Difference]: Finished difference Result 3749 states and 9367 transitions. [2022-01-18 02:48:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-18 02:48:51,642 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 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 123 [2022-01-18 02:48:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:51,650 INFO L225 Difference]: With dead ends: 3749 [2022-01-18 02:48:51,650 INFO L226 Difference]: Without dead ends: 3375 [2022-01-18 02:48:51,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 191 SyntacticMatches, 6 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9392 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2955, Invalid=27145, Unknown=2, NotChecked=0, Total=30102 [2022-01-18 02:48:51,653 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 3292 mSDsluCounter, 8411 mSDsCounter, 0 mSdLazyCounter, 4626 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 7863 SdHoareTripleChecker+Invalid, 5210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 4626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:51,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3292 Valid, 7863 Invalid, 5210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 4626 Invalid, 0 Unknown, 290 Unchecked, 2.0s Time] [2022-01-18 02:48:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2022-01-18 02:48:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 2001. [2022-01-18 02:48:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 2000 states have (on average 2.481) internal successors, (4962), 2000 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 4962 transitions. [2022-01-18 02:48:51,693 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 4962 transitions. Word has length 123 [2022-01-18 02:48:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:51,694 INFO L470 AbstractCegarLoop]: Abstraction has 2001 states and 4962 transitions. [2022-01-18 02:48:51,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 4962 transitions. [2022-01-18 02:48:51,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:48:51,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:51,698 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:48:51,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 02:48:51,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:51,907 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1025385696, now seen corresponding path program 11 times [2022-01-18 02:48:51,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:51,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103296545] [2022-01-18 02:48:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:51,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:52,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:52,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103296545] [2022-01-18 02:48:52,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103296545] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:52,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040393372] [2022-01-18 02:48:52,835 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:48:52,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:52,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:52,836 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:52,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 02:48:52,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:48:52,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:48:52,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-18 02:48:52,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:54,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:48:54,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:48:54,121 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 25 treesize of output 7 [2022-01-18 02:48:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:54,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:55,325 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:55,326 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 111 treesize of output 95 [2022-01-18 02:48:55,329 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 67 treesize of output 49 [2022-01-18 02:48:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:57,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040393372] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:57,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:57,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 86 [2022-01-18 02:48:57,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631076317] [2022-01-18 02:48:57,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:57,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 02:48:57,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:57,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 02:48:57,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=6712, Unknown=1, NotChecked=0, Total=7310 [2022-01-18 02:48:57,443 INFO L87 Difference]: Start difference. First operand 2001 states and 4962 transitions. Second operand has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:05,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:49:05,668 INFO L93 Difference]: Finished difference Result 3460 states and 8678 transitions. [2022-01-18 02:49:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 02:49:05,669 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 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 123 [2022-01-18 02:49:05,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:49:05,674 INFO L225 Difference]: With dead ends: 3460 [2022-01-18 02:49:05,674 INFO L226 Difference]: Without dead ends: 3172 [2022-01-18 02:49:05,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 191 SyntacticMatches, 8 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8495 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=3015, Invalid=24044, Unknown=1, NotChecked=0, Total=27060 [2022-01-18 02:49:05,676 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 3789 mSDsluCounter, 6787 mSDsCounter, 0 mSdLazyCounter, 3509 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3789 SdHoareTripleChecker+Valid, 6397 SdHoareTripleChecker+Invalid, 4210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 3509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:49:05,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3789 Valid, 6397 Invalid, 4210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 3509 Invalid, 0 Unknown, 321 Unchecked, 1.6s Time] [2022-01-18 02:49:05,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2022-01-18 02:49:05,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 1989. [2022-01-18 02:49:05,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1989 states, 1988 states have (on average 2.483400402414487) internal successors, (4937), 1988 states have internal predecessors, (4937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:05,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 4937 transitions. [2022-01-18 02:49:05,734 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 4937 transitions. Word has length 123 [2022-01-18 02:49:05,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:49:05,734 INFO L470 AbstractCegarLoop]: Abstraction has 1989 states and 4937 transitions. [2022-01-18 02:49:05,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.6627906976744184) internal successors, (315), 86 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:05,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 4937 transitions. [2022-01-18 02:49:05,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:49:05,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:49:05,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:49:05,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 02:49:05,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:05,955 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:49:05,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:49:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1278814812, now seen corresponding path program 12 times [2022-01-18 02:49:05,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:49:05,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567762807] [2022-01-18 02:49:05,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:49:05,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:49:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:49:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:07,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:49:07,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567762807] [2022-01-18 02:49:07,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567762807] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:49:07,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056304429] [2022-01-18 02:49:07,175 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:49:07,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:07,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:49:07,176 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) [2022-01-18 02:49:07,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 02:49:07,260 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:49:07,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:49:07,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 68 conjunts are in the unsatisfiable core [2022-01-18 02:49:07,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:49:07,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:49:07,583 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:49:07,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:49:08,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:49:08,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:49:08,922 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:49:08,922 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 21 treesize of output 10 [2022-01-18 02:49:09,379 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:09,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:49:10,024 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:49:10,024 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 82 treesize of output 74 [2022-01-18 02:49:10,030 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 53 treesize of output 47 [2022-01-18 02:49:10,033 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 47 treesize of output 41 [2022-01-18 02:49:12,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:49:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:12,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056304429] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:49:12,102 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:49:12,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 31, 31] total 86 [2022-01-18 02:49:12,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188651472] [2022-01-18 02:49:12,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:49:12,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 02:49:12,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:49:12,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 02:49:12,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=6766, Unknown=4, NotChecked=0, Total=7310 [2022-01-18 02:49:12,104 INFO L87 Difference]: Start difference. First operand 1989 states and 4937 transitions. Second operand has 86 states, 86 states have (on average 3.5232558139534884) internal successors, (303), 86 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:19,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:49:19,173 INFO L93 Difference]: Finished difference Result 3134 states and 7768 transitions. [2022-01-18 02:49:19,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 02:49:19,174 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.5232558139534884) internal successors, (303), 86 states have internal predecessors, (303), 0 states have call successors, (0), 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 123 [2022-01-18 02:49:19,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:49:19,177 INFO L225 Difference]: With dead ends: 3134 [2022-01-18 02:49:19,177 INFO L226 Difference]: Without dead ends: 2660 [2022-01-18 02:49:19,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 198 SyntacticMatches, 27 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8194 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=2395, Invalid=21777, Unknown=8, NotChecked=0, Total=24180 [2022-01-18 02:49:19,179 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 2354 mSDsluCounter, 7106 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2354 SdHoareTripleChecker+Valid, 6853 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 379 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:49:19,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2354 Valid, 6853 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2515 Invalid, 0 Unknown, 379 Unchecked, 1.1s Time] [2022-01-18 02:49:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-01-18 02:49:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2083. [2022-01-18 02:49:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 2.4817483189241116) internal successors, (5167), 2082 states have internal predecessors, (5167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 5167 transitions. [2022-01-18 02:49:19,206 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 5167 transitions. Word has length 123 [2022-01-18 02:49:19,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:49:19,206 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 5167 transitions. [2022-01-18 02:49:19,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.5232558139534884) internal successors, (303), 86 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 5167 transitions. [2022-01-18 02:49:19,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:49:19,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:49:19,211 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:49:19,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-01-18 02:49:19,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:19,423 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:49:19,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:49:19,424 INFO L85 PathProgramCache]: Analyzing trace with hash -877278444, now seen corresponding path program 13 times [2022-01-18 02:49:19,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:49:19,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121490936] [2022-01-18 02:49:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:49:19,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:49:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:49:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:20,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:49:20,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121490936] [2022-01-18 02:49:20,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121490936] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:49:20,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859031201] [2022-01-18 02:49:20,481 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:49:20,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:20,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:49:20,482 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) [2022-01-18 02:49:20,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 02:49:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:49:20,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-18 02:49:20,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:49:20,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:49:20,980 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:49:20,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:49:21,149 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 [2022-01-18 02:49:21,315 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 [2022-01-18 02:49:21,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:49:22,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:49:22,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:49:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:22,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:49:25,101 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 02:49:25,101 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 2 case distinctions, treesize of input 112 treesize of output 88 [2022-01-18 02:49:25,142 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:49:25,142 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 391 treesize of output 431 [2022-01-18 02:49:25,158 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:49:25,159 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 431 treesize of output 417 [2022-01-18 02:49:25,174 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 269 treesize of output 245 [2022-01-18 02:49:25,184 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 245 treesize of output 221 [2022-01-18 02:49:26,961 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:49:26,984 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:26,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859031201] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:49:26,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:49:26,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 34] total 89 [2022-01-18 02:49:26,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456471623] [2022-01-18 02:49:26,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:49:26,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-18 02:49:26,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:49:26,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-18 02:49:26,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=7134, Unknown=91, NotChecked=0, Total=7832 [2022-01-18 02:49:26,986 INFO L87 Difference]: Start difference. First operand 2083 states and 5167 transitions. Second operand has 89 states, 89 states have (on average 3.550561797752809) internal successors, (316), 89 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:49:34,071 INFO L93 Difference]: Finished difference Result 2973 states and 7314 transitions. [2022-01-18 02:49:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 02:49:34,071 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.550561797752809) internal successors, (316), 89 states have internal predecessors, (316), 0 states have call successors, (0), 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 123 [2022-01-18 02:49:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:49:34,074 INFO L225 Difference]: With dead ends: 2973 [2022-01-18 02:49:34,074 INFO L226 Difference]: Without dead ends: 2726 [2022-01-18 02:49:34,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 195 SyntacticMatches, 9 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6569 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=2060, Invalid=18707, Unknown=113, NotChecked=0, Total=20880 [2022-01-18 02:49:34,076 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 2263 mSDsluCounter, 5138 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 4804 SdHoareTripleChecker+Invalid, 3328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1640 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:49:34,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2263 Valid, 4804 Invalid, 3328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1609 Invalid, 0 Unknown, 1640 Unchecked, 0.7s Time] [2022-01-18 02:49:34,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2022-01-18 02:49:34,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2083. [2022-01-18 02:49:34,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2083 states, 2082 states have (on average 2.4817483189241116) internal successors, (5167), 2082 states have internal predecessors, (5167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 5167 transitions. [2022-01-18 02:49:34,106 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 5167 transitions. Word has length 123 [2022-01-18 02:49:34,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:49:34,106 INFO L470 AbstractCegarLoop]: Abstraction has 2083 states and 5167 transitions. [2022-01-18 02:49:34,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.550561797752809) internal successors, (316), 89 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:34,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 5167 transitions. [2022-01-18 02:49:34,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-18 02:49:34,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:49:34,110 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:49:34,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-01-18 02:49:34,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:34,332 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:49:34,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:49:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash 809515352, now seen corresponding path program 14 times [2022-01-18 02:49:34,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:49:34,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071145992] [2022-01-18 02:49:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:49:34,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:49:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:49:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:35,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:49:35,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071145992] [2022-01-18 02:49:35,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071145992] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:49:35,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965878207] [2022-01-18 02:49:35,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:49:35,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:35,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:49:35,250 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:49:35,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 02:49:35,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:49:35,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:49:35,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-18 02:49:35,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:49:36,365 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:49:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:36,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:49:37,127 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:49:37,127 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 40 treesize of output 32 [2022-01-18 02:49:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:38,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965878207] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:49:38,402 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:49:38,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29, 24] total 74 [2022-01-18 02:49:38,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55481482] [2022-01-18 02:49:38,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:49:38,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-18 02:49:38,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:49:38,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-18 02:49:38,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=4725, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 02:49:38,404 INFO L87 Difference]: Start difference. First operand 2083 states and 5167 transitions. Second operand has 74 states, 74 states have (on average 4.013513513513513) internal successors, (297), 74 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:42,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:49:42,060 INFO L93 Difference]: Finished difference Result 2897 states and 7141 transitions. [2022-01-18 02:49:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 02:49:42,061 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.013513513513513) internal successors, (297), 74 states have internal predecessors, (297), 0 states have call successors, (0), 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 123 [2022-01-18 02:49:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:49:42,064 INFO L225 Difference]: With dead ends: 2897 [2022-01-18 02:49:42,064 INFO L226 Difference]: Without dead ends: 2569 [2022-01-18 02:49:42,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 198 SyntacticMatches, 7 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5453 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2188, Invalid=14324, Unknown=0, NotChecked=0, Total=16512 [2022-01-18 02:49:42,066 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 2140 mSDsluCounter, 5489 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 5234 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 394 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:49:42,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 5234 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1996 Invalid, 0 Unknown, 394 Unchecked, 0.9s Time] [2022-01-18 02:49:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2022-01-18 02:49:42,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1945. [2022-01-18 02:49:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1945 states, 1944 states have (on average 2.483539094650206) internal successors, (4828), 1944 states have internal predecessors, (4828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 4828 transitions. [2022-01-18 02:49:42,094 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 4828 transitions. Word has length 123 [2022-01-18 02:49:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:49:42,094 INFO L470 AbstractCegarLoop]: Abstraction has 1945 states and 4828 transitions. [2022-01-18 02:49:42,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.013513513513513) internal successors, (297), 74 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:42,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 4828 transitions. [2022-01-18 02:49:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 02:49:42,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:49:42,098 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:49:42,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 02:49:42,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:42,307 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:49:42,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:49:42,308 INFO L85 PathProgramCache]: Analyzing trace with hash 53092897, now seen corresponding path program 15 times [2022-01-18 02:49:42,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:49:42,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103687696] [2022-01-18 02:49:42,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:49:42,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:49:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:49:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:44,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:49:44,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103687696] [2022-01-18 02:49:44,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103687696] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:49:44,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935170421] [2022-01-18 02:49:44,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:49:44,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:44,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:49:44,056 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:49:44,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 02:49:44,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:49:44,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:49:44,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-18 02:49:44,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:49:45,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:49:45,096 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:49:45,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:49:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:49:45,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:49:45,637 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_615 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_615) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))) (or (let ((.cse0 (+ c_~s~0 .cse1))) (and (<= c_~N~0 .cse0) (<= .cse0 c_~N~0))) (= .cse1 0)))) is different from false [2022-01-18 02:49:45,919 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:49:45,919 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 111 treesize of output 95 [2022-01-18 02:49:45,922 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 67 treesize of output 49 [2022-01-18 02:49:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:49:46,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935170421] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:49:46,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:49:46,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 23, 23] total 73 [2022-01-18 02:49:46,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296375306] [2022-01-18 02:49:46,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:49:46,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-18 02:49:46,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:49:46,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-18 02:49:46,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=4825, Unknown=1, NotChecked=140, Total=5256 [2022-01-18 02:49:46,888 INFO L87 Difference]: Start difference. First operand 1945 states and 4828 transitions. Second operand has 73 states, 73 states have (on average 4.219178082191781) internal successors, (308), 73 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:52,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:49:52,555 INFO L93 Difference]: Finished difference Result 3440 states and 8479 transitions. [2022-01-18 02:49:52,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 02:49:52,556 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 4.219178082191781) internal successors, (308), 73 states have internal predecessors, (308), 0 states have call successors, (0), 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 [2022-01-18 02:49:52,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:49:52,560 INFO L225 Difference]: With dead ends: 3440 [2022-01-18 02:49:52,560 INFO L226 Difference]: Without dead ends: 3176 [2022-01-18 02:49:52,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 232 SyntacticMatches, 9 SemanticMatches, 129 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4541 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1619, Invalid=15154, Unknown=1, NotChecked=256, Total=17030 [2022-01-18 02:49:52,561 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 2401 mSDsluCounter, 6682 mSDsCounter, 0 mSdLazyCounter, 3699 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 6290 SdHoareTripleChecker+Invalid, 4464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 646 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:49:52,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 6290 Invalid, 4464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3699 Invalid, 0 Unknown, 646 Unchecked, 1.6s Time] [2022-01-18 02:49:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2022-01-18 02:49:52,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 1954. [2022-01-18 02:49:52,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1953 states have (on average 2.459805427547363) internal successors, (4804), 1953 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:52,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 4804 transitions. [2022-01-18 02:49:52,594 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 4804 transitions. Word has length 130 [2022-01-18 02:49:52,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:49:52,594 INFO L470 AbstractCegarLoop]: Abstraction has 1954 states and 4804 transitions. [2022-01-18 02:49:52,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 4.219178082191781) internal successors, (308), 73 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 4804 transitions. [2022-01-18 02:49:52,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 02:49:52,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:49:52,598 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:49:52,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-01-18 02:49:52,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:52,811 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:49:52,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:49:52,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1694119649, now seen corresponding path program 16 times [2022-01-18 02:49:52,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:49:52,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101030951] [2022-01-18 02:49:52,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:49:52,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:49:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:49:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:54,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:49:54,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101030951] [2022-01-18 02:49:54,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101030951] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:49:54,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543850565] [2022-01-18 02:49:54,275 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:49:54,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:54,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:49:54,276 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:49:54,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 02:49:54,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:49:54,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:49:54,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 67 conjunts are in the unsatisfiable core [2022-01-18 02:49:54,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:49:54,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:49:54,653 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:49:54,653 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:49:55,855 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:49:55,991 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 25 treesize of output 7 [2022-01-18 02:49:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:56,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:49:57,131 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:49:57,132 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 111 treesize of output 95 [2022-01-18 02:49:57,135 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 67 treesize of output 49 [2022-01-18 02:49:59,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:49:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:59,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543850565] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:49:59,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:49:59,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 91 [2022-01-18 02:49:59,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877086810] [2022-01-18 02:49:59,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:49:59,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-18 02:49:59,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:49:59,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-18 02:49:59,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=552, Invalid=7634, Unknown=4, NotChecked=0, Total=8190 [2022-01-18 02:49:59,342 INFO L87 Difference]: Start difference. First operand 1954 states and 4804 transitions. Second operand has 91 states, 91 states have (on average 3.5824175824175826) internal successors, (326), 91 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:50:10,395 INFO L93 Difference]: Finished difference Result 4902 states and 12336 transitions. [2022-01-18 02:50:10,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-18 02:50:10,396 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.5824175824175826) internal successors, (326), 91 states have internal predecessors, (326), 0 states have call successors, (0), 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 [2022-01-18 02:50:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:50:10,403 INFO L225 Difference]: With dead ends: 4902 [2022-01-18 02:50:10,403 INFO L226 Difference]: Without dead ends: 4481 [2022-01-18 02:50:10,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 206 SyntacticMatches, 16 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11927 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=3231, Invalid=32671, Unknown=8, NotChecked=0, Total=35910 [2022-01-18 02:50:10,405 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 4128 mSDsluCounter, 7422 mSDsCounter, 0 mSdLazyCounter, 3945 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4128 SdHoareTripleChecker+Valid, 6956 SdHoareTripleChecker+Invalid, 5570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 3945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1198 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:50:10,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4128 Valid, 6956 Invalid, 5570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 3945 Invalid, 0 Unknown, 1198 Unchecked, 1.9s Time] [2022-01-18 02:50:10,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2022-01-18 02:50:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 2167. [2022-01-18 02:50:10,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2166 states have (on average 2.4778393351800556) internal successors, (5367), 2166 states have internal predecessors, (5367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:10,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 5367 transitions. [2022-01-18 02:50:10,447 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 5367 transitions. Word has length 130 [2022-01-18 02:50:10,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:50:10,448 INFO L470 AbstractCegarLoop]: Abstraction has 2167 states and 5367 transitions. [2022-01-18 02:50:10,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.5824175824175826) internal successors, (326), 91 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:10,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 5367 transitions. [2022-01-18 02:50:10,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 02:50:10,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:50:10,452 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:50:10,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 02:50:10,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 02:50:10,674 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:50:10,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:50:10,674 INFO L85 PathProgramCache]: Analyzing trace with hash 170806729, now seen corresponding path program 17 times [2022-01-18 02:50:10,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:50:10,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912406931] [2022-01-18 02:50:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:50:10,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:50:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:50:12,080 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:12,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:50:12,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912406931] [2022-01-18 02:50:12,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912406931] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:50:12,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714151280] [2022-01-18 02:50:12,080 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:50:12,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:50:12,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:50:12,081 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:50:12,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 02:50:12,175 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:50:12,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:50:12,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-18 02:50:12,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:50:12,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:50:12,360 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:50:12,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:50:12,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:50:13,008 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:50:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:50:13,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:50:13,721 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:50:13,722 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 82 treesize of output 74 [2022-01-18 02:50:13,727 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 53 treesize of output 47 [2022-01-18 02:50:13,731 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 47 treesize of output 41 [2022-01-18 02:50:14,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:50:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:50:14,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714151280] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:50:14,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:50:14,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 22, 22] total 62 [2022-01-18 02:50:14,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928609942] [2022-01-18 02:50:14,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:50:14,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-18 02:50:14,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:50:14,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-18 02:50:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3558, Unknown=4, NotChecked=0, Total=3782 [2022-01-18 02:50:14,527 INFO L87 Difference]: Start difference. First operand 2167 states and 5367 transitions. Second operand has 62 states, 62 states have (on average 4.370967741935484) internal successors, (271), 62 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:19,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:50:19,185 INFO L93 Difference]: Finished difference Result 3030 states and 7583 transitions. [2022-01-18 02:50:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 02:50:19,185 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.370967741935484) internal successors, (271), 62 states have internal predecessors, (271), 0 states have call successors, (0), 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 [2022-01-18 02:50:19,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:50:19,190 INFO L225 Difference]: With dead ends: 3030 [2022-01-18 02:50:19,190 INFO L226 Difference]: Without dead ends: 2806 [2022-01-18 02:50:19,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 238 SyntacticMatches, 3 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4422 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1451, Invalid=15056, Unknown=5, NotChecked=0, Total=16512 [2022-01-18 02:50:19,192 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 1861 mSDsluCounter, 6100 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 5784 SdHoareTripleChecker+Invalid, 3925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 717 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:50:19,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1861 Valid, 5784 Invalid, 3925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 3101 Invalid, 0 Unknown, 717 Unchecked, 1.3s Time] [2022-01-18 02:50:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-01-18 02:50:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 1973. [2022-01-18 02:50:19,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1972 states have (on average 2.496450304259635) internal successors, (4923), 1972 states have internal predecessors, (4923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:19,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 4923 transitions. [2022-01-18 02:50:19,226 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 4923 transitions. Word has length 130 [2022-01-18 02:50:19,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:50:19,227 INFO L470 AbstractCegarLoop]: Abstraction has 1973 states and 4923 transitions. [2022-01-18 02:50:19,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.370967741935484) internal successors, (271), 62 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:19,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 4923 transitions. [2022-01-18 02:50:19,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 02:50:19,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:50:19,230 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:50:19,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-01-18 02:50:19,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-18 02:50:19,443 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:50:19,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:50:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash -452051231, now seen corresponding path program 18 times [2022-01-18 02:50:19,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:50:19,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577199569] [2022-01-18 02:50:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:50:19,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:50:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:50:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:20,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:50:20,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577199569] [2022-01-18 02:50:20,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577199569] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:50:20,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225578852] [2022-01-18 02:50:20,910 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:50:20,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:50:20,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:50:20,911 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:50:20,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 02:50:21,002 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:50:21,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:50:21,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-18 02:50:21,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:50:21,030 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:50:21,188 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:50:21,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:50:21,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:50:21,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:50:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:50:22,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:50:22,715 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:50:22,715 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 111 treesize of output 95 [2022-01-18 02:50:22,718 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 67 treesize of output 49 [2022-01-18 02:50:23,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:50:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:50:23,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225578852] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:50:23,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:50:23,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 23, 23] total 63 [2022-01-18 02:50:23,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025550355] [2022-01-18 02:50:23,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:50:23,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-18 02:50:23,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:50:23,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-18 02:50:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3673, Unknown=3, NotChecked=0, Total=3906 [2022-01-18 02:50:23,546 INFO L87 Difference]: Start difference. First operand 1973 states and 4923 transitions. Second operand has 63 states, 63 states have (on average 4.285714285714286) internal successors, (270), 63 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:27,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:50:27,934 INFO L93 Difference]: Finished difference Result 2693 states and 6790 transitions. [2022-01-18 02:50:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 02:50:27,934 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.285714285714286) internal successors, (270), 63 states have internal predecessors, (270), 0 states have call successors, (0), 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 [2022-01-18 02:50:27,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:50:27,938 INFO L225 Difference]: With dead ends: 2693 [2022-01-18 02:50:27,938 INFO L226 Difference]: Without dead ends: 2528 [2022-01-18 02:50:27,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 234 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3721 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1299, Invalid=12978, Unknown=3, NotChecked=0, Total=14280 [2022-01-18 02:50:27,940 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 1778 mSDsluCounter, 5852 mSDsCounter, 0 mSdLazyCounter, 3157 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 405 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:50:27,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1778 Valid, 5567 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3157 Invalid, 0 Unknown, 405 Unchecked, 1.3s Time] [2022-01-18 02:50:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2022-01-18 02:50:27,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1944. [2022-01-18 02:50:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1943 states have (on average 2.4930519814719507) internal successors, (4844), 1943 states have internal predecessors, (4844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 4844 transitions. [2022-01-18 02:50:27,963 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 4844 transitions. Word has length 130 [2022-01-18 02:50:27,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:50:27,964 INFO L470 AbstractCegarLoop]: Abstraction has 1944 states and 4844 transitions. [2022-01-18 02:50:27,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.285714285714286) internal successors, (270), 63 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:27,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 4844 transitions. [2022-01-18 02:50:27,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 02:50:27,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:50:27,968 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:50:27,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 02:50:28,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 02:50:28,184 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:50:28,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:50:28,184 INFO L85 PathProgramCache]: Analyzing trace with hash 2009562423, now seen corresponding path program 19 times [2022-01-18 02:50:28,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:50:28,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011379839] [2022-01-18 02:50:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:50:28,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:50:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:50:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:29,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:50:29,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011379839] [2022-01-18 02:50:29,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011379839] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:50:29,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848001148] [2022-01-18 02:50:29,503 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:50:29,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:50:29,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:50:29,505 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:50:29,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 02:50:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:50:29,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-18 02:50:29,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:50:30,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:50:30,959 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:50:31,087 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 25 treesize of output 7 [2022-01-18 02:50:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:31,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:50:32,281 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:50:32,282 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 111 treesize of output 95 [2022-01-18 02:50:32,285 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 67 treesize of output 49 [2022-01-18 02:50:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:34,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848001148] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:50:34,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:50:34,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 92 [2022-01-18 02:50:34,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910883971] [2022-01-18 02:50:34,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:50:34,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-18 02:50:34,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:50:34,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-18 02:50:34,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=7892, Unknown=3, NotChecked=0, Total=8372 [2022-01-18 02:50:34,176 INFO L87 Difference]: Start difference. First operand 1944 states and 4844 transitions. Second operand has 92 states, 92 states have (on average 3.652173913043478) internal successors, (336), 92 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:50:43,808 INFO L93 Difference]: Finished difference Result 3128 states and 7793 transitions. [2022-01-18 02:50:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-18 02:50:43,808 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.652173913043478) internal successors, (336), 92 states have internal predecessors, (336), 0 states have call successors, (0), 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 [2022-01-18 02:50:43,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:50:43,812 INFO L225 Difference]: With dead ends: 3128 [2022-01-18 02:50:43,812 INFO L226 Difference]: Without dead ends: 2723 [2022-01-18 02:50:43,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 201 SyntacticMatches, 5 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9832 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=3140, Invalid=29437, Unknown=3, NotChecked=0, Total=32580 [2022-01-18 02:50:43,814 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 3613 mSDsluCounter, 7232 mSDsCounter, 0 mSdLazyCounter, 3850 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3613 SdHoareTripleChecker+Valid, 6846 SdHoareTripleChecker+Invalid, 4349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 3850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:50:43,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3613 Valid, 6846 Invalid, 4349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 3850 Invalid, 0 Unknown, 258 Unchecked, 1.7s Time] [2022-01-18 02:50:43,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-01-18 02:50:43,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1936. [2022-01-18 02:50:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1936 states, 1935 states have (on average 2.4919896640826873) internal successors, (4822), 1935 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 4822 transitions. [2022-01-18 02:50:43,847 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 4822 transitions. Word has length 130 [2022-01-18 02:50:43,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:50:43,847 INFO L470 AbstractCegarLoop]: Abstraction has 1936 states and 4822 transitions. [2022-01-18 02:50:43,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.652173913043478) internal successors, (336), 92 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 4822 transitions. [2022-01-18 02:50:43,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 02:50:43,851 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:50:43,851 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:50:43,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-01-18 02:50:44,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:50:44,068 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:50:44,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:50:44,068 INFO L85 PathProgramCache]: Analyzing trace with hash -454447819, now seen corresponding path program 20 times [2022-01-18 02:50:44,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:50:44,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432314409] [2022-01-18 02:50:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:50:44,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:50:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:50:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:45,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:50:45,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432314409] [2022-01-18 02:50:45,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432314409] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:50:45,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742346785] [2022-01-18 02:50:45,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:50:45,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:50:45,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:50:45,582 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:50:45,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 02:50:45,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:50:45,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:50:45,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 67 conjunts are in the unsatisfiable core [2022-01-18 02:50:45,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:50:45,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:50:45,951 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:50:45,951 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 11 treesize of output 11 [2022-01-18 02:50:47,118 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:50:47,253 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 25 treesize of output 7 [2022-01-18 02:50:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:47,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:50:48,488 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:50:48,488 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 111 treesize of output 95 [2022-01-18 02:50:48,492 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 67 treesize of output 49 [2022-01-18 02:50:50,634 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:50:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:50,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742346785] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:50:50,657 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:50:50,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 34, 34] total 94 [2022-01-18 02:50:50,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450827117] [2022-01-18 02:50:50,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:50:50,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-18 02:50:50,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:50:50,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-18 02:50:50,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=514, Invalid=8225, Unknown=3, NotChecked=0, Total=8742 [2022-01-18 02:50:50,659 INFO L87 Difference]: Start difference. First operand 1936 states and 4822 transitions. Second operand has 94 states, 94 states have (on average 3.4468085106382977) internal successors, (324), 94 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:00,083 INFO L93 Difference]: Finished difference Result 3499 states and 8838 transitions. [2022-01-18 02:51:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-18 02:51:00,083 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.4468085106382977) internal successors, (324), 94 states have internal predecessors, (324), 0 states have call successors, (0), 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 [2022-01-18 02:51:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:00,088 INFO L225 Difference]: With dead ends: 3499 [2022-01-18 02:51:00,088 INFO L226 Difference]: Without dead ends: 3242 [2022-01-18 02:51:00,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 205 SyntacticMatches, 9 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11186 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=3007, Invalid=32135, Unknown=14, NotChecked=0, Total=35156 [2022-01-18 02:51:00,089 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 2958 mSDsluCounter, 8099 mSDsCounter, 0 mSdLazyCounter, 4251 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2958 SdHoareTripleChecker+Valid, 7669 SdHoareTripleChecker+Invalid, 5274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 4251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 805 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:00,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2958 Valid, 7669 Invalid, 5274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 4251 Invalid, 0 Unknown, 805 Unchecked, 1.8s Time] [2022-01-18 02:51:00,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2022-01-18 02:51:00,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 2116. [2022-01-18 02:51:00,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2115 states have (on average 2.523404255319149) internal successors, (5337), 2115 states have internal predecessors, (5337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 5337 transitions. [2022-01-18 02:51:00,118 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 5337 transitions. Word has length 130 [2022-01-18 02:51:00,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:00,118 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 5337 transitions. [2022-01-18 02:51:00,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.4468085106382977) internal successors, (324), 94 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 5337 transitions. [2022-01-18 02:51:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-18 02:51:00,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:00,121 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:00,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-01-18 02:51:00,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 02:51:00,322 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:00,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:00,322 INFO L85 PathProgramCache]: Analyzing trace with hash -477262696, now seen corresponding path program 21 times [2022-01-18 02:51:00,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:00,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423255201] [2022-01-18 02:51:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:00,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:00,457 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:51:00,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:00,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423255201] [2022-01-18 02:51:00,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423255201] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:00,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085970814] [2022-01-18 02:51:00,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:51:00,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:00,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:00,460 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:00,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 02:51:00,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:51:00,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:00,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 02:51:00,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-18 02:51:00,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:51:01,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085970814] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:01,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:01,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 8] total 23 [2022-01-18 02:51:01,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186666613] [2022-01-18 02:51:01,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:01,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 02:51:01,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:01,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 02:51:01,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-01-18 02:51:01,227 INFO L87 Difference]: Start difference. First operand 2116 states and 5337 transitions. Second operand has 23 states, 23 states have (on average 12.652173913043478) internal successors, (291), 23 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:01,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:01,569 INFO L93 Difference]: Finished difference Result 3970 states and 10095 transitions. [2022-01-18 02:51:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 02:51:01,569 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.652173913043478) internal successors, (291), 23 states have internal predecessors, (291), 0 states have call successors, (0), 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 131 [2022-01-18 02:51:01,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:01,575 INFO L225 Difference]: With dead ends: 3970 [2022-01-18 02:51:01,575 INFO L226 Difference]: Without dead ends: 3427 [2022-01-18 02:51:01,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:51:01,580 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 1137 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:01,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 1281 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 02:51:01,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2022-01-18 02:51:01,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 2563. [2022-01-18 02:51:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2562 states have (on average 2.610070257611241) internal successors, (6687), 2562 states have internal predecessors, (6687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 6687 transitions. [2022-01-18 02:51:01,626 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 6687 transitions. Word has length 131 [2022-01-18 02:51:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:01,626 INFO L470 AbstractCegarLoop]: Abstraction has 2563 states and 6687 transitions. [2022-01-18 02:51:01,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.652173913043478) internal successors, (291), 23 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 6687 transitions. [2022-01-18 02:51:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-18 02:51:01,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:01,629 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:01,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 02:51:01,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 02:51:01,830 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:01,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash -491141122, now seen corresponding path program 22 times [2022-01-18 02:51:01,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:01,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898846781] [2022-01-18 02:51:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:01,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:02,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:02,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898846781] [2022-01-18 02:51:02,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898846781] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:02,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066942142] [2022-01-18 02:51:02,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:51:02,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:02,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:02,817 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:02,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 02:51:02,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:51:02,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:02,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-18 02:51:02,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:02,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:51:03,139 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:51:03,139 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:51:04,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:51:04,304 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:04,305 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 23 treesize of output 23 [2022-01-18 02:51:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:04,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:04,805 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:04,805 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 47 treesize of output 47 [2022-01-18 02:51:04,807 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 25 treesize of output 18 [2022-01-18 02:51:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:07,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066942142] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:07,122 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:07,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 74 [2022-01-18 02:51:07,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479465882] [2022-01-18 02:51:07,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:07,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-01-18 02:51:07,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:07,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-01-18 02:51:07,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=4901, Unknown=15, NotChecked=0, Total=5402 [2022-01-18 02:51:07,123 INFO L87 Difference]: Start difference. First operand 2563 states and 6687 transitions. Second operand has 74 states, 74 states have (on average 4.581081081081081) internal successors, (339), 74 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:14,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:14,201 INFO L93 Difference]: Finished difference Result 10301 states and 29821 transitions. [2022-01-18 02:51:14,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 02:51:14,202 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 4.581081081081081) internal successors, (339), 74 states have internal predecessors, (339), 0 states have call successors, (0), 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 135 [2022-01-18 02:51:14,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:14,215 INFO L225 Difference]: With dead ends: 10301 [2022-01-18 02:51:14,215 INFO L226 Difference]: Without dead ends: 9925 [2022-01-18 02:51:14,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 238 SyntacticMatches, 21 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5380 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2591, Invalid=15754, Unknown=15, NotChecked=0, Total=18360 [2022-01-18 02:51:14,216 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 2393 mSDsluCounter, 5240 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1013 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:14,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2393 Valid, 5142 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1839 Invalid, 0 Unknown, 1013 Unchecked, 0.9s Time] [2022-01-18 02:51:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9925 states. [2022-01-18 02:51:14,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9925 to 7679. [2022-01-18 02:51:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7679 states, 7678 states have (on average 2.921594165147174) internal successors, (22432), 7678 states have internal predecessors, (22432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7679 states to 7679 states and 22432 transitions. [2022-01-18 02:51:14,337 INFO L78 Accepts]: Start accepts. Automaton has 7679 states and 22432 transitions. Word has length 135 [2022-01-18 02:51:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:14,337 INFO L470 AbstractCegarLoop]: Abstraction has 7679 states and 22432 transitions. [2022-01-18 02:51:14,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 4.581081081081081) internal successors, (339), 74 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7679 states and 22432 transitions. [2022-01-18 02:51:14,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-18 02:51:14,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:14,348 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:14,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 02:51:14,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:14,549 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:14,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1444166304, now seen corresponding path program 23 times [2022-01-18 02:51:14,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:14,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546324256] [2022-01-18 02:51:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:14,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:15,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:15,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546324256] [2022-01-18 02:51:15,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546324256] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:15,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082089930] [2022-01-18 02:51:15,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:51:15,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:15,470 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:15,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 02:51:15,595 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:51:15,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:15,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-18 02:51:15,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:15,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:51:15,745 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:51:15,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:51:16,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:51:16,481 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:51:16,481 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 23 treesize of output 10 [2022-01-18 02:51:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-18 02:51:16,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:16,633 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_880 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_880) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset 4)) 0))) is different from false [2022-01-18 02:51:16,657 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:16,657 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 47 treesize of output 47 [2022-01-18 02:51:16,659 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 25 treesize of output 18 [2022-01-18 02:51:17,305 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 5 not checked. [2022-01-18 02:51:17,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082089930] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:17,305 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:17,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 16, 14] total 46 [2022-01-18 02:51:17,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852700636] [2022-01-18 02:51:17,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:17,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 02:51:17,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 02:51:17,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1866, Unknown=1, NotChecked=86, Total=2070 [2022-01-18 02:51:17,307 INFO L87 Difference]: Start difference. First operand 7679 states and 22432 transitions. Second operand has 46 states, 46 states have (on average 5.956521739130435) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:21,657 INFO L93 Difference]: Finished difference Result 21861 states and 63347 transitions. [2022-01-18 02:51:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 02:51:21,657 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.956521739130435) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 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 135 [2022-01-18 02:51:21,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:21,695 INFO L225 Difference]: With dead ends: 21861 [2022-01-18 02:51:21,695 INFO L226 Difference]: Without dead ends: 21741 [2022-01-18 02:51:21,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 259 SyntacticMatches, 5 SemanticMatches, 106 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 2608 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1086, Invalid=10259, Unknown=1, NotChecked=210, Total=11556 [2022-01-18 02:51:21,697 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 1636 mSDsluCounter, 9603 mSDsCounter, 0 mSdLazyCounter, 2783 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 9212 SdHoareTripleChecker+Invalid, 3989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1125 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:21,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1636 Valid, 9212 Invalid, 3989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2783 Invalid, 0 Unknown, 1125 Unchecked, 1.2s Time] [2022-01-18 02:51:21,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21741 states. [2022-01-18 02:51:21,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21741 to 10759. [2022-01-18 02:51:21,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10759 states, 10758 states have (on average 2.9560327198364007) internal successors, (31801), 10758 states have internal predecessors, (31801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10759 states to 10759 states and 31801 transitions. [2022-01-18 02:51:22,025 INFO L78 Accepts]: Start accepts. Automaton has 10759 states and 31801 transitions. Word has length 135 [2022-01-18 02:51:22,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:22,025 INFO L470 AbstractCegarLoop]: Abstraction has 10759 states and 31801 transitions. [2022-01-18 02:51:22,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.956521739130435) internal successors, (274), 46 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:22,025 INFO L276 IsEmpty]: Start isEmpty. Operand 10759 states and 31801 transitions. [2022-01-18 02:51:22,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-18 02:51:22,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:22,042 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:22,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-01-18 02:51:22,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:22,243 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:22,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash 442989216, now seen corresponding path program 24 times [2022-01-18 02:51:22,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:22,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859479123] [2022-01-18 02:51:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:22,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:23,162 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:23,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:23,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859479123] [2022-01-18 02:51:23,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859479123] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:23,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867471674] [2022-01-18 02:51:23,162 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:51:23,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:23,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:23,163 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:23,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 02:51:23,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:51:23,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:23,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 02:51:23,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:23,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:51:23,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 02:51:24,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:51:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:51:24,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:24,178 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_913 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_913) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset 4)) 0))) is different from false [2022-01-18 02:51:24,239 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:24,239 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 47 treesize of output 47 [2022-01-18 02:51:24,241 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 25 treesize of output 18 [2022-01-18 02:51:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 5 not checked. [2022-01-18 02:51:24,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867471674] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:24,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:24,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 14, 14] total 52 [2022-01-18 02:51:24,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464590372] [2022-01-18 02:51:24,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:24,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 02:51:24,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:24,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 02:51:24,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=2422, Unknown=1, NotChecked=98, Total=2652 [2022-01-18 02:51:24,801 INFO L87 Difference]: Start difference. First operand 10759 states and 31801 transitions. Second operand has 52 states, 52 states have (on average 6.0576923076923075) internal successors, (315), 52 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:30,821 INFO L93 Difference]: Finished difference Result 15359 states and 43251 transitions. [2022-01-18 02:51:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 02:51:30,822 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.0576923076923075) internal successors, (315), 52 states have internal predecessors, (315), 0 states have call successors, (0), 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 135 [2022-01-18 02:51:30,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:30,845 INFO L225 Difference]: With dead ends: 15359 [2022-01-18 02:51:30,845 INFO L226 Difference]: Without dead ends: 14252 [2022-01-18 02:51:30,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1409, Invalid=10584, Unknown=1, NotChecked=216, Total=12210 [2022-01-18 02:51:30,846 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 2513 mSDsluCounter, 7445 mSDsCounter, 0 mSdLazyCounter, 3562 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 7188 SdHoareTripleChecker+Invalid, 4091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 337 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:30,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2513 Valid, 7188 Invalid, 4091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3562 Invalid, 0 Unknown, 337 Unchecked, 1.6s Time] [2022-01-18 02:51:30,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14252 states. [2022-01-18 02:51:30,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14252 to 8156. [2022-01-18 02:51:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8156 states, 8155 states have (on average 2.8954015941140403) internal successors, (23612), 8155 states have internal predecessors, (23612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8156 states to 8156 states and 23612 transitions. [2022-01-18 02:51:31,019 INFO L78 Accepts]: Start accepts. Automaton has 8156 states and 23612 transitions. Word has length 135 [2022-01-18 02:51:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:31,020 INFO L470 AbstractCegarLoop]: Abstraction has 8156 states and 23612 transitions. [2022-01-18 02:51:31,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 6.0576923076923075) internal successors, (315), 52 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 8156 states and 23612 transitions. [2022-01-18 02:51:31,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 02:51:31,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:31,027 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:31,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 02:51:31,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:31,228 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:31,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:31,229 INFO L85 PathProgramCache]: Analyzing trace with hash -464051704, now seen corresponding path program 25 times [2022-01-18 02:51:31,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:31,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369149099] [2022-01-18 02:51:31,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:31,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:32,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:32,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369149099] [2022-01-18 02:51:32,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369149099] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:32,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497009460] [2022-01-18 02:51:32,786 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:51:32,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:32,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:32,787 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:32,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 02:51:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:32,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-18 02:51:32,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:32,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:51:33,211 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:51:33,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:51:34,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 02:51:34,656 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 25 treesize of output 7 [2022-01-18 02:51:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:35,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:35,763 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:35,763 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 111 treesize of output 95 [2022-01-18 02:51:35,767 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 67 treesize of output 49 [2022-01-18 02:51:38,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:51:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:38,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497009460] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:38,189 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:38,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 96 [2022-01-18 02:51:38,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914752799] [2022-01-18 02:51:38,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:38,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-18 02:51:38,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:38,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-18 02:51:38,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=8443, Unknown=4, NotChecked=0, Total=9120 [2022-01-18 02:51:38,191 INFO L87 Difference]: Start difference. First operand 8156 states and 23612 transitions. Second operand has 96 states, 96 states have (on average 3.6458333333333335) internal successors, (350), 96 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:46,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:46,105 INFO L93 Difference]: Finished difference Result 13851 states and 39296 transitions. [2022-01-18 02:51:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 02:51:46,105 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.6458333333333335) internal successors, (350), 96 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-01-18 02:51:46,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:46,127 INFO L225 Difference]: With dead ends: 13851 [2022-01-18 02:51:46,127 INFO L226 Difference]: Without dead ends: 13545 [2022-01-18 02:51:46,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 217 SyntacticMatches, 7 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10157 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=3138, Invalid=29431, Unknown=11, NotChecked=0, Total=32580 [2022-01-18 02:51:46,129 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 2612 mSDsluCounter, 7137 mSDsCounter, 0 mSdLazyCounter, 3938 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2612 SdHoareTripleChecker+Valid, 6661 SdHoareTripleChecker+Invalid, 5239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 3938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1089 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:46,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2612 Valid, 6661 Invalid, 5239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 3938 Invalid, 0 Unknown, 1089 Unchecked, 1.6s Time] [2022-01-18 02:51:46,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13545 states. [2022-01-18 02:51:46,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13545 to 8307. [2022-01-18 02:51:46,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8307 states, 8306 states have (on average 2.885384059715868) internal successors, (23966), 8306 states have internal predecessors, (23966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:46,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8307 states to 8307 states and 23966 transitions. [2022-01-18 02:51:46,295 INFO L78 Accepts]: Start accepts. Automaton has 8307 states and 23966 transitions. Word has length 137 [2022-01-18 02:51:46,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:46,295 INFO L470 AbstractCegarLoop]: Abstraction has 8307 states and 23966 transitions. [2022-01-18 02:51:46,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.6458333333333335) internal successors, (350), 96 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 8307 states and 23966 transitions. [2022-01-18 02:51:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 02:51:46,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:46,301 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:51:46,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 02:51:46,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:46,502 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:46,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:46,503 INFO L85 PathProgramCache]: Analyzing trace with hash -640819818, now seen corresponding path program 26 times [2022-01-18 02:51:46,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:46,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530658505] [2022-01-18 02:51:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:46,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:48,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:48,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530658505] [2022-01-18 02:51:48,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530658505] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:48,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486127281] [2022-01-18 02:51:48,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:51:48,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:48,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:48,030 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:48,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 02:51:48,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:51:48,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:48,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 70 conjunts are in the unsatisfiable core [2022-01-18 02:51:48,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:49,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:51:49,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 02:51:50,152 INFO L353 Elim1Store]: treesize reduction 15, result has 16.7 percent of original size [2022-01-18 02:51:50,153 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 25 treesize of output 10 [2022-01-18 02:51:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:50,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:50,927 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~q_front~0 1))) (or (< .cse0 0) (and (forall ((v_ArrVal_988 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_988) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_988 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_988) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0))) (<= c_~n~0 .cse0) (< (+ |c_thread1Thread1of1ForFork1_#t~post1#1| 1) c_~N~0))) is different from false [2022-01-18 02:51:50,983 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~q_front~0 1))) (or (< .cse0 0) (and (forall ((v_ArrVal_988 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_988) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_988 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_988) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0))) (<= c_~n~0 .cse0) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0))) is different from false [2022-01-18 02:51:51,004 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:51:51,005 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 82 treesize of output 74 [2022-01-18 02:51:51,007 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 53 treesize of output 47 [2022-01-18 02:51:51,010 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 47 treesize of output 41 [2022-01-18 02:51:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:53,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486127281] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:53,458 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:53,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 91 [2022-01-18 02:51:53,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80047393] [2022-01-18 02:51:53,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:53,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-18 02:51:53,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:53,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-18 02:51:53,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=7356, Unknown=2, NotChecked=350, Total=8190 [2022-01-18 02:51:53,459 INFO L87 Difference]: Start difference. First operand 8307 states and 23966 transitions. Second operand has 91 states, 91 states have (on average 3.6153846153846154) internal successors, (329), 91 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:58,924 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_~q_front~0 1))) (or (< .cse0 0) (and (forall ((v_ArrVal_988 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_988) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_988 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_988) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0))) (<= c_~n~0 .cse0) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0))) (= c_~s~0 0)) is different from false [2022-01-18 02:52:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:00,005 INFO L93 Difference]: Finished difference Result 11435 states and 32471 transitions. [2022-01-18 02:52:00,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-18 02:52:00,005 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.6153846153846154) internal successors, (329), 91 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-01-18 02:52:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:00,021 INFO L225 Difference]: With dead ends: 11435 [2022-01-18 02:52:00,021 INFO L226 Difference]: Without dead ends: 11121 [2022-01-18 02:52:00,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 226 SyntacticMatches, 11 SemanticMatches, 154 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 7275 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=2148, Invalid=21117, Unknown=3, NotChecked=912, Total=24180 [2022-01-18 02:52:00,023 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 1712 mSDsluCounter, 8627 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 8212 SdHoareTripleChecker+Invalid, 5101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2042 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:00,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1712 Valid, 8212 Invalid, 5101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3005 Invalid, 0 Unknown, 2042 Unchecked, 1.3s Time] [2022-01-18 02:52:00,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11121 states. [2022-01-18 02:52:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11121 to 8445. [2022-01-18 02:52:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8445 states, 8444 states have (on average 2.8750592136428232) internal successors, (24277), 8444 states have internal predecessors, (24277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8445 states to 8445 states and 24277 transitions. [2022-01-18 02:52:00,138 INFO L78 Accepts]: Start accepts. Automaton has 8445 states and 24277 transitions. Word has length 137 [2022-01-18 02:52:00,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:00,139 INFO L470 AbstractCegarLoop]: Abstraction has 8445 states and 24277 transitions. [2022-01-18 02:52:00,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.6153846153846154) internal successors, (329), 91 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 8445 states and 24277 transitions. [2022-01-18 02:52:00,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 02:52:00,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:00,146 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:52:00,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 02:52:00,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-18 02:52:00,347 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:00,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:00,348 INFO L85 PathProgramCache]: Analyzing trace with hash 108466710, now seen corresponding path program 27 times [2022-01-18 02:52:00,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:00,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322758194] [2022-01-18 02:52:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:00,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:01,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:01,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322758194] [2022-01-18 02:52:01,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322758194] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:01,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354783967] [2022-01-18 02:52:01,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:52:01,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:01,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:01,756 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:01,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 02:52:02,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:52:02,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:52:02,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-18 02:52:02,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:02,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:52:02,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:52:03,027 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:52:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:52:03,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:03,563 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:52:03,563 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 82 treesize of output 74 [2022-01-18 02:52:03,566 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 53 treesize of output 47 [2022-01-18 02:52:03,568 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 47 treesize of output 41 [2022-01-18 02:52:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:52:04,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354783967] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:04,567 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:04,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 22, 22] total 68 [2022-01-18 02:52:04,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144849815] [2022-01-18 02:52:04,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:04,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-18 02:52:04,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:04,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-18 02:52:04,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=4273, Unknown=2, NotChecked=0, Total=4556 [2022-01-18 02:52:04,569 INFO L87 Difference]: Start difference. First operand 8445 states and 24277 transitions. Second operand has 68 states, 68 states have (on average 4.455882352941177) internal successors, (303), 68 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:08,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:08,922 INFO L93 Difference]: Finished difference Result 12771 states and 36349 transitions. [2022-01-18 02:52:08,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 02:52:08,922 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.455882352941177) internal successors, (303), 68 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-01-18 02:52:08,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:08,979 INFO L225 Difference]: With dead ends: 12771 [2022-01-18 02:52:08,979 INFO L226 Difference]: Without dead ends: 12377 [2022-01-18 02:52:08,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 249 SyntacticMatches, 5 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4399 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1183, Invalid=14315, Unknown=2, NotChecked=0, Total=15500 [2022-01-18 02:52:08,980 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 1466 mSDsluCounter, 6100 mSDsCounter, 0 mSdLazyCounter, 2742 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 5612 SdHoareTripleChecker+Invalid, 4158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1349 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:08,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 5612 Invalid, 4158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2742 Invalid, 0 Unknown, 1349 Unchecked, 1.1s Time] [2022-01-18 02:52:08,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12377 states. [2022-01-18 02:52:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12377 to 8206. [2022-01-18 02:52:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8206 states, 8205 states have (on average 2.8856794637416208) internal successors, (23677), 8205 states have internal predecessors, (23677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:09,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8206 states to 8206 states and 23677 transitions. [2022-01-18 02:52:09,083 INFO L78 Accepts]: Start accepts. Automaton has 8206 states and 23677 transitions. Word has length 137 [2022-01-18 02:52:09,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:09,083 INFO L470 AbstractCegarLoop]: Abstraction has 8206 states and 23677 transitions. [2022-01-18 02:52:09,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.455882352941177) internal successors, (303), 68 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:09,083 INFO L276 IsEmpty]: Start isEmpty. Operand 8206 states and 23677 transitions. [2022-01-18 02:52:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 02:52:09,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:09,090 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:52:09,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 02:52:09,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:09,290 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:09,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:09,291 INFO L85 PathProgramCache]: Analyzing trace with hash -148608930, now seen corresponding path program 28 times [2022-01-18 02:52:09,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:09,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556321139] [2022-01-18 02:52:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:09,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:10,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:10,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556321139] [2022-01-18 02:52:10,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556321139] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:10,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040022360] [2022-01-18 02:52:10,657 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:52:10,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:10,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:10,658 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:10,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 02:52:10,762 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:52:10,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:52:10,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 70 conjunts are in the unsatisfiable core [2022-01-18 02:52:10,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:10,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:52:11,081 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:52:11,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:52:12,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:52:12,369 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 25 treesize of output 7 [2022-01-18 02:52:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:12,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:13,353 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:52:13,353 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 82 treesize of output 74 [2022-01-18 02:52:13,356 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 53 treesize of output 47 [2022-01-18 02:52:13,359 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 47 treesize of output 41 [2022-01-18 02:52:15,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:52:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:15,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040022360] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:15,661 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:15,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 94 [2022-01-18 02:52:15,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565601416] [2022-01-18 02:52:15,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:15,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-18 02:52:15,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:15,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-18 02:52:15,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=665, Invalid=8074, Unknown=3, NotChecked=0, Total=8742 [2022-01-18 02:52:15,663 INFO L87 Difference]: Start difference. First operand 8206 states and 23677 transitions. Second operand has 94 states, 94 states have (on average 3.723404255319149) internal successors, (350), 94 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:21,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:21,342 INFO L93 Difference]: Finished difference Result 12389 states and 35382 transitions. [2022-01-18 02:52:21,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 02:52:21,342 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.723404255319149) internal successors, (350), 94 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-01-18 02:52:21,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:21,360 INFO L225 Difference]: With dead ends: 12389 [2022-01-18 02:52:21,361 INFO L226 Difference]: Without dead ends: 12099 [2022-01-18 02:52:21,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 217 SyntacticMatches, 5 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8378 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2772, Invalid=24275, Unknown=13, NotChecked=0, Total=27060 [2022-01-18 02:52:21,363 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1927 mSDsluCounter, 6165 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 5816 SdHoareTripleChecker+Invalid, 3676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1086 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:21,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1927 Valid, 5816 Invalid, 3676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2485 Invalid, 0 Unknown, 1086 Unchecked, 1.0s Time] [2022-01-18 02:52:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12099 states. [2022-01-18 02:52:21,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12099 to 8194. [2022-01-18 02:52:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8194 states, 8193 states have (on average 2.8858781886976685) internal successors, (23644), 8193 states have internal predecessors, (23644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:21,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8194 states to 8194 states and 23644 transitions. [2022-01-18 02:52:21,534 INFO L78 Accepts]: Start accepts. Automaton has 8194 states and 23644 transitions. Word has length 137 [2022-01-18 02:52:21,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:21,534 INFO L470 AbstractCegarLoop]: Abstraction has 8194 states and 23644 transitions. [2022-01-18 02:52:21,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.723404255319149) internal successors, (350), 94 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:21,534 INFO L276 IsEmpty]: Start isEmpty. Operand 8194 states and 23644 transitions. [2022-01-18 02:52:21,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 02:52:21,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:21,541 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:52:21,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 02:52:21,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:21,750 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:21,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:21,751 INFO L85 PathProgramCache]: Analyzing trace with hash 161397182, now seen corresponding path program 29 times [2022-01-18 02:52:21,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:21,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739569562] [2022-01-18 02:52:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:21,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:23,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:23,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739569562] [2022-01-18 02:52:23,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739569562] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:23,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495976391] [2022-01-18 02:52:23,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:52:23,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:23,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:23,404 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:23,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 02:52:23,518 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 02:52:23,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:52:23,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-18 02:52:23,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:23,547 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:52:23,727 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:52:23,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:52:24,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:52:24,503 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-01-18 02:52:24,503 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 23 treesize of output 10 [2022-01-18 02:52:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:52:24,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:25,274 WARN L838 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1102 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1102) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (forall ((v_ArrVal_1102 (Array Int Int))) (<= (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1102) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) c_~N~0))) (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (< c_~q_front~0 0) (<= c_~q_back~0 c_~q_front~0)) is different from false [2022-01-18 02:52:25,330 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:52:25,330 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 82 treesize of output 74 [2022-01-18 02:52:25,333 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 53 treesize of output 47 [2022-01-18 02:52:25,335 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 47 treesize of output 41 [2022-01-18 02:52:26,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:52:26,946 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:52:26,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495976391] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:26,946 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:26,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 22, 22] total 71 [2022-01-18 02:52:26,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754583192] [2022-01-18 02:52:26,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:26,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-18 02:52:26,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:26,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-18 02:52:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=4558, Unknown=1, NotChecked=136, Total=4970 [2022-01-18 02:52:26,948 INFO L87 Difference]: Start difference. First operand 8194 states and 23644 transitions. Second operand has 71 states, 71 states have (on average 4.436619718309859) internal successors, (315), 71 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:32,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:32,195 INFO L93 Difference]: Finished difference Result 12789 states and 36537 transitions. [2022-01-18 02:52:32,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 02:52:32,195 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.436619718309859) internal successors, (315), 71 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-01-18 02:52:32,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:32,215 INFO L225 Difference]: With dead ends: 12789 [2022-01-18 02:52:32,216 INFO L226 Difference]: Without dead ends: 12610 [2022-01-18 02:52:32,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 250 SyntacticMatches, 5 SemanticMatches, 132 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4631 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1662, Invalid=15897, Unknown=1, NotChecked=262, Total=17822 [2022-01-18 02:52:32,217 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1852 mSDsluCounter, 5681 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 5439 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 840 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:32,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 5439 Invalid, 2952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2040 Invalid, 0 Unknown, 840 Unchecked, 0.9s Time] [2022-01-18 02:52:32,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12610 states. [2022-01-18 02:52:32,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12610 to 8186. [2022-01-18 02:52:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8186 states, 8185 states have (on average 2.8849114233353697) internal successors, (23613), 8185 states have internal predecessors, (23613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:32,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8186 states to 8186 states and 23613 transitions. [2022-01-18 02:52:32,349 INFO L78 Accepts]: Start accepts. Automaton has 8186 states and 23613 transitions. Word has length 137 [2022-01-18 02:52:32,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:32,350 INFO L470 AbstractCegarLoop]: Abstraction has 8186 states and 23613 transitions. [2022-01-18 02:52:32,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.436619718309859) internal successors, (315), 71 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:32,350 INFO L276 IsEmpty]: Start isEmpty. Operand 8186 states and 23613 transitions. [2022-01-18 02:52:32,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-18 02:52:32,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:32,357 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:52:32,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 02:52:32,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 02:52:32,566 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:32,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:32,567 INFO L85 PathProgramCache]: Analyzing trace with hash -878627714, now seen corresponding path program 30 times [2022-01-18 02:52:32,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:32,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96159850] [2022-01-18 02:52:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:32,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:34,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:34,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96159850] [2022-01-18 02:52:34,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96159850] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:34,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388379260] [2022-01-18 02:52:34,268 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:52:34,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:34,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:34,270 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:34,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 02:52:34,380 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:52:34,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:52:34,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-18 02:52:34,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:35,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:52:35,139 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 02:52:35,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 02:52:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:52:35,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:36,178 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:52:36,178 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 111 treesize of output 95 [2022-01-18 02:52:36,182 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 67 treesize of output 49 [2022-01-18 02:52:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:52:37,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388379260] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:37,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:37,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 23, 23] total 71 [2022-01-18 02:52:37,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104898177] [2022-01-18 02:52:37,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:37,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-01-18 02:52:37,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-01-18 02:52:37,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=4678, Unknown=3, NotChecked=0, Total=4970 [2022-01-18 02:52:37,247 INFO L87 Difference]: Start difference. First operand 8186 states and 23613 transitions. Second operand has 71 states, 71 states have (on average 4.295774647887324) internal successors, (305), 71 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:43,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:43,455 INFO L93 Difference]: Finished difference Result 12735 states and 36293 transitions. [2022-01-18 02:52:43,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 02:52:43,456 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.295774647887324) internal successors, (305), 71 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2022-01-18 02:52:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:43,475 INFO L225 Difference]: With dead ends: 12735 [2022-01-18 02:52:43,476 INFO L226 Difference]: Without dead ends: 12655 [2022-01-18 02:52:43,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 238 SyntacticMatches, 6 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5313 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1636, Invalid=17267, Unknown=3, NotChecked=0, Total=18906 [2022-01-18 02:52:43,477 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 2074 mSDsluCounter, 6221 mSDsCounter, 0 mSdLazyCounter, 3529 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 3764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:43,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2074 Valid, 5905 Invalid, 3764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3529 Invalid, 0 Unknown, 150 Unchecked, 1.5s Time] [2022-01-18 02:52:43,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12655 states. [2022-01-18 02:52:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12655 to 8174. [2022-01-18 02:52:43,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8174 states, 8173 states have (on average 2.8862106937477057) internal successors, (23589), 8173 states have internal predecessors, (23589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:43,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8174 states to 8174 states and 23589 transitions. [2022-01-18 02:52:43,632 INFO L78 Accepts]: Start accepts. Automaton has 8174 states and 23589 transitions. Word has length 137 [2022-01-18 02:52:43,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:43,632 INFO L470 AbstractCegarLoop]: Abstraction has 8174 states and 23589 transitions. [2022-01-18 02:52:43,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.295774647887324) internal successors, (305), 71 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:43,632 INFO L276 IsEmpty]: Start isEmpty. Operand 8174 states and 23589 transitions. [2022-01-18 02:52:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:52:43,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:43,641 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:52:43,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-01-18 02:52:43,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 02:52:43,860 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:43,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:43,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1523455396, now seen corresponding path program 31 times [2022-01-18 02:52:43,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:43,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714245672] [2022-01-18 02:52:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:43,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:45,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:45,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714245672] [2022-01-18 02:52:45,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714245672] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:45,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057195224] [2022-01-18 02:52:45,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:52:45,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:45,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:45,448 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:45,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 02:52:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:45,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-18 02:52:45,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:47,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:52:47,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-01-18 02:52:48,773 INFO L353 Elim1Store]: treesize reduction 84, result has 16.0 percent of original size [2022-01-18 02:52:48,774 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 46 treesize of output 28 [2022-01-18 02:52:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:49,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:50,989 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 02:52:50,990 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 198 treesize of output 183 [2022-01-18 02:52:50,998 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 02:52:50,999 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 107 treesize of output 68 [2022-01-18 02:52:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:54,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057195224] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:54,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:54,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 108 [2022-01-18 02:52:54,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060677988] [2022-01-18 02:52:54,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:54,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-01-18 02:52:54,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:54,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-01-18 02:52:54,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=944, Invalid=10591, Unknown=21, NotChecked=0, Total=11556 [2022-01-18 02:52:54,626 INFO L87 Difference]: Start difference. First operand 8174 states and 23589 transitions. Second operand has 108 states, 108 states have (on average 3.25) internal successors, (351), 108 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:00,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:53:00,852 INFO L93 Difference]: Finished difference Result 12657 states and 36072 transitions. [2022-01-18 02:53:00,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 02:53:00,852 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 3.25) internal successors, (351), 108 states have internal predecessors, (351), 0 states have call successors, (0), 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 139 [2022-01-18 02:53:00,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:53:00,873 INFO L225 Difference]: With dead ends: 12657 [2022-01-18 02:53:00,873 INFO L226 Difference]: Without dead ends: 12408 [2022-01-18 02:53:00,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 220 SyntacticMatches, 15 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8445 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=2299, Invalid=23762, Unknown=21, NotChecked=0, Total=26082 [2022-01-18 02:53:00,875 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 2349 mSDsluCounter, 9495 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 8801 SdHoareTripleChecker+Invalid, 4472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2105 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:53:00,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2349 Valid, 8801 Invalid, 4472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2262 Invalid, 0 Unknown, 2105 Unchecked, 1.0s Time] [2022-01-18 02:53:00,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12408 states. [2022-01-18 02:53:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12408 to 8329. [2022-01-18 02:53:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8329 states, 8328 states have (on average 2.881844380403458) internal successors, (24000), 8328 states have internal predecessors, (24000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8329 states to 8329 states and 24000 transitions. [2022-01-18 02:53:01,004 INFO L78 Accepts]: Start accepts. Automaton has 8329 states and 24000 transitions. Word has length 139 [2022-01-18 02:53:01,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:53:01,004 INFO L470 AbstractCegarLoop]: Abstraction has 8329 states and 24000 transitions. [2022-01-18 02:53:01,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 3.25) internal successors, (351), 108 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:01,004 INFO L276 IsEmpty]: Start isEmpty. Operand 8329 states and 24000 transitions. [2022-01-18 02:53:01,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:53:01,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:53:01,014 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:53:01,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 02:53:01,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 02:53:01,236 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:53:01,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:53:01,237 INFO L85 PathProgramCache]: Analyzing trace with hash -286390406, now seen corresponding path program 32 times [2022-01-18 02:53:01,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:53:01,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813365456] [2022-01-18 02:53:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:53:01,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:53:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:53:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:02,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:53:02,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813365456] [2022-01-18 02:53:02,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813365456] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:53:02,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894004379] [2022-01-18 02:53:02,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:53:02,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:02,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:53:02,920 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:53:02,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 02:53:03,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:53:03,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:53:03,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 93 conjunts are in the unsatisfiable core [2022-01-18 02:53:03,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:53:03,639 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 02:53:03,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 02:53:03,992 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 02:53:04,445 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:53:05,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:53:05,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-01-18 02:53:05,773 INFO L353 Elim1Store]: treesize reduction 37, result has 27.5 percent of original size [2022-01-18 02:53:05,773 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 46 treesize of output 27 [2022-01-18 02:53:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:06,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:53:21,678 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-01-18 02:53:21,678 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 314 treesize of output 156 [2022-01-18 02:53:21,715 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 02:53:21,715 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 347 treesize of output 342 [2022-01-18 02:53:21,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:53:21,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 241 treesize of output 181 [2022-01-18 02:53:21,757 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 02:53:21,758 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 209 treesize of output 218 [2022-01-18 02:53:24,595 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:24,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894004379] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:53:24,595 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:53:24,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 43] total 114 [2022-01-18 02:53:24,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126045424] [2022-01-18 02:53:24,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:53:24,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-01-18 02:53:24,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:53:24,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-01-18 02:53:24,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=671, Invalid=12168, Unknown=43, NotChecked=0, Total=12882 [2022-01-18 02:53:24,597 INFO L87 Difference]: Start difference. First operand 8329 states and 24000 transitions. Second operand has 114 states, 114 states have (on average 3.192982456140351) internal successors, (364), 114 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:53:42,134 INFO L93 Difference]: Finished difference Result 10315 states and 28963 transitions. [2022-01-18 02:53:42,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 02:53:42,134 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 3.192982456140351) internal successors, (364), 114 states have internal predecessors, (364), 0 states have call successors, (0), 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 139 [2022-01-18 02:53:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:53:42,149 INFO L225 Difference]: With dead ends: 10315 [2022-01-18 02:53:42,149 INFO L226 Difference]: Without dead ends: 9803 [2022-01-18 02:53:42,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 231 SyntacticMatches, 41 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15646 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=3228, Invalid=35735, Unknown=43, NotChecked=0, Total=39006 [2022-01-18 02:53:42,151 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 4349 mSDsluCounter, 14743 mSDsCounter, 0 mSdLazyCounter, 6078 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4349 SdHoareTripleChecker+Valid, 13480 SdHoareTripleChecker+Invalid, 10638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 6078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4295 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:53:42,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4349 Valid, 13480 Invalid, 10638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 6078 Invalid, 0 Unknown, 4295 Unchecked, 2.8s Time] [2022-01-18 02:53:42,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9803 states. [2022-01-18 02:53:42,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9803 to 8282. [2022-01-18 02:53:42,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8282 states, 8281 states have (on average 2.8768264702330635) internal successors, (23823), 8281 states have internal predecessors, (23823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8282 states to 8282 states and 23823 transitions. [2022-01-18 02:53:42,273 INFO L78 Accepts]: Start accepts. Automaton has 8282 states and 23823 transitions. Word has length 139 [2022-01-18 02:53:42,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:53:42,273 INFO L470 AbstractCegarLoop]: Abstraction has 8282 states and 23823 transitions. [2022-01-18 02:53:42,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 3.192982456140351) internal successors, (364), 114 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 8282 states and 23823 transitions. [2022-01-18 02:53:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:53:42,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:53:42,282 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:53:42,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 02:53:42,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 02:53:42,483 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:53:42,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:53:42,483 INFO L85 PathProgramCache]: Analyzing trace with hash -774168868, now seen corresponding path program 33 times [2022-01-18 02:53:42,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:53:42,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032562030] [2022-01-18 02:53:42,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:53:42,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:53:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:53:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:44,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:53:44,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032562030] [2022-01-18 02:53:44,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032562030] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:53:44,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040000011] [2022-01-18 02:53:44,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:53:44,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:44,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:53:44,999 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:53:44,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 02:53:45,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:53:45,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:53:45,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 02:53:45,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:53:46,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:53:46,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-01-18 02:53:47,337 INFO L353 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2022-01-18 02:53:47,337 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 45 treesize of output 25 [2022-01-18 02:53:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:53:47,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:53:49,677 INFO L353 Elim1Store]: treesize reduction 60, result has 38.1 percent of original size [2022-01-18 02:53:49,678 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 134 treesize of output 122 [2022-01-18 02:53:49,685 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 02:53:49,686 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 77 treesize of output 65 [2022-01-18 02:53:49,691 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 02:53:49,692 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 65 treesize of output 53 [2022-01-18 02:53:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:53:51,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040000011] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:53:51,128 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:53:51,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 29, 29] total 91 [2022-01-18 02:53:51,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591658524] [2022-01-18 02:53:51,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:53:51,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-01-18 02:53:51,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:53:51,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-01-18 02:53:51,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=812, Invalid=7372, Unknown=6, NotChecked=0, Total=8190 [2022-01-18 02:53:51,130 INFO L87 Difference]: Start difference. First operand 8282 states and 23823 transitions. Second operand has 91 states, 91 states have (on average 3.6923076923076925) internal successors, (336), 91 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:24,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:54:24,400 INFO L93 Difference]: Finished difference Result 18201 states and 50982 transitions. [2022-01-18 02:54:24,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-01-18 02:54:24,400 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.6923076923076925) internal successors, (336), 91 states have internal predecessors, (336), 0 states have call successors, (0), 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 139 [2022-01-18 02:54:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:54:24,429 INFO L225 Difference]: With dead ends: 18201 [2022-01-18 02:54:24,429 INFO L226 Difference]: Without dead ends: 17335 [2022-01-18 02:54:24,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 268 SyntacticMatches, 16 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27636 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=5511, Invalid=73156, Unknown=13, NotChecked=0, Total=78680 [2022-01-18 02:54:24,432 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 3902 mSDsluCounter, 12407 mSDsCounter, 0 mSdLazyCounter, 4767 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3902 SdHoareTripleChecker+Valid, 11879 SdHoareTripleChecker+Invalid, 11151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 4767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5929 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:54:24,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3902 Valid, 11879 Invalid, 11151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 4767 Invalid, 0 Unknown, 5929 Unchecked, 2.7s Time] [2022-01-18 02:54:24,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17335 states. [2022-01-18 02:54:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17335 to 12417. [2022-01-18 02:54:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12417 states, 12416 states have (on average 2.8891752577319587) internal successors, (35872), 12416 states have internal predecessors, (35872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:24,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12417 states to 12417 states and 35872 transitions. [2022-01-18 02:54:24,678 INFO L78 Accepts]: Start accepts. Automaton has 12417 states and 35872 transitions. Word has length 139 [2022-01-18 02:54:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:54:24,678 INFO L470 AbstractCegarLoop]: Abstraction has 12417 states and 35872 transitions. [2022-01-18 02:54:24,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.6923076923076925) internal successors, (336), 91 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 12417 states and 35872 transitions. [2022-01-18 02:54:24,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:54:24,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:54:24,690 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:54:24,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-18 02:54:24,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:24,891 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:54:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:54:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1928290016, now seen corresponding path program 34 times [2022-01-18 02:54:24,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:54:24,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073611147] [2022-01-18 02:54:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:54:24,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:54:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:54:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:26,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:54:26,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073611147] [2022-01-18 02:54:26,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073611147] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:54:26,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118908493] [2022-01-18 02:54:26,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:54:26,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:54:26,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:54:26,677 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:54:26,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 02:54:26,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:54:26,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:54:26,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 86 conjunts are in the unsatisfiable core [2022-01-18 02:54:26,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:54:26,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:54:27,252 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:54:27,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:54:27,631 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 [2022-01-18 02:54:27,826 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 [2022-01-18 02:54:28,313 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:54:29,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-01-18 02:54:30,126 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 02:54:30,127 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 47 treesize of output 16 [2022-01-18 02:54:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:30,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:54:44,377 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-18 02:54:44,377 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 2 case distinctions, treesize of input 289 treesize of output 170 [2022-01-18 02:54:44,453 INFO L353 Elim1Store]: treesize reduction 62, result has 62.4 percent of original size [2022-01-18 02:54:44,453 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 445 treesize of output 472 [2022-01-18 02:54:44,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:54:44,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 309 treesize of output 231 [2022-01-18 02:54:44,507 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 02:54:44,507 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 237 treesize of output 238 [2022-01-18 02:54:52,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:54:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:54:52,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118908493] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:54:52,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:54:52,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 42, 43] total 115 [2022-01-18 02:54:52,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367866540] [2022-01-18 02:54:52,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:54:52,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-01-18 02:54:52,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:54:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-01-18 02:54:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1011, Invalid=12048, Unknown=51, NotChecked=0, Total=13110 [2022-01-18 02:54:52,417 INFO L87 Difference]: Start difference. First operand 12417 states and 35872 transitions. Second operand has 115 states, 115 states have (on average 3.1652173913043478) internal successors, (364), 115 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:58,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:54:58,963 INFO L93 Difference]: Finished difference Result 13888 states and 39651 transitions. [2022-01-18 02:54:58,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 02:54:58,964 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 3.1652173913043478) internal successors, (364), 115 states have internal predecessors, (364), 0 states have call successors, (0), 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 139 [2022-01-18 02:54:58,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:54:58,986 INFO L225 Difference]: With dead ends: 13888 [2022-01-18 02:54:58,987 INFO L226 Difference]: Without dead ends: 13724 [2022-01-18 02:54:58,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 224 SyntacticMatches, 16 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9129 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=2236, Invalid=25095, Unknown=59, NotChecked=0, Total=27390 [2022-01-18 02:54:58,988 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 2002 mSDsluCounter, 8686 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2002 SdHoareTripleChecker+Valid, 8350 SdHoareTripleChecker+Invalid, 4031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2205 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:54:58,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2002 Valid, 8350 Invalid, 4031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1762 Invalid, 0 Unknown, 2205 Unchecked, 0.8s Time] [2022-01-18 02:54:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13724 states. [2022-01-18 02:54:59,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13724 to 12466. [2022-01-18 02:54:59,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12466 states, 12465 states have (on average 2.8876052948255113) internal successors, (35994), 12465 states have internal predecessors, (35994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12466 states to 12466 states and 35994 transitions. [2022-01-18 02:54:59,205 INFO L78 Accepts]: Start accepts. Automaton has 12466 states and 35994 transitions. Word has length 139 [2022-01-18 02:54:59,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:54:59,205 INFO L470 AbstractCegarLoop]: Abstraction has 12466 states and 35994 transitions. [2022-01-18 02:54:59,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 3.1652173913043478) internal successors, (364), 115 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:54:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 12466 states and 35994 transitions. [2022-01-18 02:54:59,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:54:59,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:54:59,217 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:54:59,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 02:54:59,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 02:54:59,418 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:54:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:54:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2011659514, now seen corresponding path program 35 times [2022-01-18 02:54:59,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:54:59,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438431954] [2022-01-18 02:54:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:54:59,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:54:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:55:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:55:01,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:55:01,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438431954] [2022-01-18 02:55:01,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438431954] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:55:01,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378261910] [2022-01-18 02:55:01,269 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:55:01,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:55:01,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:55:01,270 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:55:01,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 02:55:01,391 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:55:01,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:55:01,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 86 conjunts are in the unsatisfiable core [2022-01-18 02:55:01,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:55:01,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:55:01,678 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:55:01,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 02:55:03,554 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-01-18 02:55:04,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:55:04,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:55:04,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:55:04,259 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:55:04,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 16 [2022-01-18 02:55:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:55:04,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:55:05,027 WARN L838 $PredicateComparison]: unable to prove that (or (<= c_~n~0 c_~q_back~0) (< c_~q_front~0 0) (and (forall ((v_ArrVal_1318 (Array Int Int))) (<= c_~N~0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))))) (forall ((v_ArrVal_1318 (Array Int Int))) (<= (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset)))) c_~N~0))) (<= c_~q_back~0 c_~q_front~0)) is different from false [2022-01-18 02:55:05,091 WARN L838 $PredicateComparison]: unable to prove that (or (< |c_thread1Thread1of1ForFork1_~i~0#1| c_~N~0) (<= c_~n~0 c_~q_back~0) (< c_~q_front~0 0) (and (forall ((v_ArrVal_1318 (Array Int Int))) (<= c_~N~0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))))) (forall ((v_ArrVal_1318 (Array Int Int))) (<= (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset)))) c_~N~0))) (<= c_~q_back~0 c_~q_front~0)) is different from false [2022-01-18 02:55:05,123 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork1_#t~post1#1| 1) c_~N~0) (<= c_~n~0 c_~q_back~0) (< c_~q_front~0 0) (and (forall ((v_ArrVal_1318 (Array Int Int))) (<= c_~N~0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))))) (forall ((v_ArrVal_1318 (Array Int Int))) (<= (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset)))) c_~N~0))) (<= c_~q_back~0 c_~q_front~0)) is different from false [2022-01-18 02:55:05,141 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork1_~i~0#1| 1) c_~N~0) (<= c_~n~0 c_~q_back~0) (< c_~q_front~0 0) (and (forall ((v_ArrVal_1318 (Array Int Int))) (<= c_~N~0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))))) (forall ((v_ArrVal_1318 (Array Int Int))) (<= (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1318) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (+ c_~s~0 (select .cse2 (+ .cse3 c_~q~0.offset 4)) (select .cse2 (+ .cse3 c_~q~0.offset)))) c_~N~0))) (<= c_~q_back~0 c_~q_front~0)) is different from false [2022-01-18 02:55:05,637 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 02:55:05,638 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 138 treesize of output 140 [2022-01-18 02:55:05,645 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 02:55:05,646 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 79 treesize of output 66 [2022-01-18 02:55:05,660 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 02:55:05,660 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 66 treesize of output 53 [2022-01-18 02:55:09,803 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 02:55:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-01-18 02:55:09,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378261910] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:55:09,827 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:55:09,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 38, 38] total 104 [2022-01-18 02:55:09,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194409731] [2022-01-18 02:55:09,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:55:09,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-01-18 02:55:09,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:55:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-01-18 02:55:09,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=9143, Unknown=9, NotChecked=796, Total=10712 [2022-01-18 02:55:09,829 INFO L87 Difference]: Start difference. First operand 12466 states and 35994 transitions. Second operand has 104 states, 104 states have (on average 3.375) internal successors, (351), 104 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:55:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:55:19,365 INFO L93 Difference]: Finished difference Result 15463 states and 43963 transitions. [2022-01-18 02:55:19,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 02:55:19,366 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.375) internal successors, (351), 104 states have internal predecessors, (351), 0 states have call successors, (0), 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 139 [2022-01-18 02:55:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:55:19,390 INFO L225 Difference]: With dead ends: 15463 [2022-01-18 02:55:19,390 INFO L226 Difference]: Without dead ends: 15425 [2022-01-18 02:55:19,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 221 SyntacticMatches, 33 SemanticMatches, 172 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 10706 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=2462, Invalid=26275, Unknown=9, NotChecked=1356, Total=30102 [2022-01-18 02:55:19,392 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 2735 mSDsluCounter, 10348 mSDsCounter, 0 mSdLazyCounter, 4256 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 9552 SdHoareTripleChecker+Invalid, 7992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 4256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3566 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:55:19,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 9552 Invalid, 7992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 4256 Invalid, 0 Unknown, 3566 Unchecked, 2.0s Time] [2022-01-18 02:55:19,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15425 states. [2022-01-18 02:55:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15425 to 12753. [2022-01-18 02:55:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12753 states, 12752 states have (on average 2.8844102885821834) internal successors, (36782), 12752 states have internal predecessors, (36782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:55:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12753 states to 12753 states and 36782 transitions. [2022-01-18 02:55:19,601 INFO L78 Accepts]: Start accepts. Automaton has 12753 states and 36782 transitions. Word has length 139 [2022-01-18 02:55:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:55:19,601 INFO L470 AbstractCegarLoop]: Abstraction has 12753 states and 36782 transitions. [2022-01-18 02:55:19,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.375) internal successors, (351), 104 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:55:19,601 INFO L276 IsEmpty]: Start isEmpty. Operand 12753 states and 36782 transitions. [2022-01-18 02:55:19,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:55:19,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:55:19,613 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:55:19,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 02:55:19,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-01-18 02:55:19,822 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:55:19,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:55:19,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1217538124, now seen corresponding path program 36 times [2022-01-18 02:55:19,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:55:19,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11300928] [2022-01-18 02:55:19,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:55:19,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:55:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:55:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:55:21,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:55:21,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11300928] [2022-01-18 02:55:21,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11300928] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:55:21,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198180586] [2022-01-18 02:55:21,293 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:55:21,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:55:21,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:55:21,295 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:55:21,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 02:55:21,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:55:21,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:55:21,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 77 conjunts are in the unsatisfiable core [2022-01-18 02:55:21,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:55:23,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:55:23,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-01-18 02:55:24,819 INFO L353 Elim1Store]: treesize reduction 84, result has 16.0 percent of original size [2022-01-18 02:55:24,819 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 46 treesize of output 28 [2022-01-18 02:55:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:55:25,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:55:27,884 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 02:55:27,885 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 156 treesize of output 151 [2022-01-18 02:55:27,894 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 02:55:27,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 53 [2022-01-18 02:55:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:55:32,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198180586] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:55:32,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:55:32,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 39, 40] total 107 [2022-01-18 02:55:32,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35131294] [2022-01-18 02:55:32,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:55:32,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-18 02:55:32,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:55:32,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-18 02:55:32,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=618, Invalid=10722, Unknown=2, NotChecked=0, Total=11342 [2022-01-18 02:55:32,363 INFO L87 Difference]: Start difference. First operand 12753 states and 36782 transitions. Second operand has 107 states, 107 states have (on average 3.2803738317757007) internal successors, (351), 107 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:55:40,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:55:40,839 INFO L93 Difference]: Finished difference Result 14694 states and 41635 transitions. [2022-01-18 02:55:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 02:55:40,840 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 3.2803738317757007) internal successors, (351), 107 states have internal predecessors, (351), 0 states have call successors, (0), 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 139 [2022-01-18 02:55:40,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:55:40,862 INFO L225 Difference]: With dead ends: 14694 [2022-01-18 02:55:40,862 INFO L226 Difference]: Without dead ends: 14667 [2022-01-18 02:55:40,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 232 SyntacticMatches, 12 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9318 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=2206, Invalid=25848, Unknown=2, NotChecked=0, Total=28056 [2022-01-18 02:55:40,863 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 2557 mSDsluCounter, 12512 mSDsCounter, 0 mSdLazyCounter, 3769 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2557 SdHoareTripleChecker+Valid, 12144 SdHoareTripleChecker+Invalid, 5333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 3769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1378 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:55:40,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2557 Valid, 12144 Invalid, 5333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 3769 Invalid, 0 Unknown, 1378 Unchecked, 1.9s Time] [2022-01-18 02:55:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14667 states. [2022-01-18 02:55:41,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14667 to 12956. [2022-01-18 02:55:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12956 states, 12955 states have (on average 2.880509455808568) internal successors, (37317), 12955 states have internal predecessors, (37317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:55:41,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12956 states to 12956 states and 37317 transitions. [2022-01-18 02:55:41,059 INFO L78 Accepts]: Start accepts. Automaton has 12956 states and 37317 transitions. Word has length 139 [2022-01-18 02:55:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:55:41,060 INFO L470 AbstractCegarLoop]: Abstraction has 12956 states and 37317 transitions. [2022-01-18 02:55:41,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 3.2803738317757007) internal successors, (351), 107 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:55:41,060 INFO L276 IsEmpty]: Start isEmpty. Operand 12956 states and 37317 transitions. [2022-01-18 02:55:41,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:55:41,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:55:41,071 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:55:41,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 02:55:41,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-01-18 02:55:41,271 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:55:41,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:55:41,272 INFO L85 PathProgramCache]: Analyzing trace with hash 308802818, now seen corresponding path program 37 times [2022-01-18 02:55:41,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:55:41,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996401776] [2022-01-18 02:55:41,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:55:41,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:55:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:55:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:55:42,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:55:42,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996401776] [2022-01-18 02:55:42,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996401776] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:55:42,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914147356] [2022-01-18 02:55:42,831 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:55:42,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:55:42,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:55:42,832 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:55:42,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 02:55:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:55:42,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 84 conjunts are in the unsatisfiable core [2022-01-18 02:55:42,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:55:45,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:55:45,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-01-18 02:55:45,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:55:45,836 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:55:45,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 13 [2022-01-18 02:55:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:55:46,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:55:47,729 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 02:55:47,730 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 199 treesize of output 183 [2022-01-18 02:55:47,736 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 02:55:47,737 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 107 treesize of output 68 [2022-01-18 02:55:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:55:50,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914147356] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:55:50,114 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:55:50,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 110 [2022-01-18 02:55:50,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641624328] [2022-01-18 02:55:50,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:55:50,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-01-18 02:55:50,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:55:50,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-01-18 02:55:50,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=11022, Unknown=20, NotChecked=0, Total=11990 [2022-01-18 02:55:50,115 INFO L87 Difference]: Start difference. First operand 12956 states and 37317 transitions. Second operand has 110 states, 110 states have (on average 3.3) internal successors, (363), 110 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:02,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:56:02,946 INFO L93 Difference]: Finished difference Result 18975 states and 54293 transitions. [2022-01-18 02:56:02,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-18 02:56:02,947 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.3) internal successors, (363), 110 states have internal predecessors, (363), 0 states have call successors, (0), 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 139 [2022-01-18 02:56:02,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:56:02,980 INFO L225 Difference]: With dead ends: 18975 [2022-01-18 02:56:02,980 INFO L226 Difference]: Without dead ends: 18260 [2022-01-18 02:56:02,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 221 SyntacticMatches, 6 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15019 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=3978, Invalid=39867, Unknown=45, NotChecked=0, Total=43890 [2022-01-18 02:56:02,983 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 4367 mSDsluCounter, 12497 mSDsCounter, 0 mSdLazyCounter, 5782 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4367 SdHoareTripleChecker+Valid, 11446 SdHoareTripleChecker+Invalid, 9619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 5782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3358 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:56:02,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4367 Valid, 11446 Invalid, 9619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 5782 Invalid, 0 Unknown, 3358 Unchecked, 2.7s Time] [2022-01-18 02:56:02,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18260 states. [2022-01-18 02:56:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18260 to 12422. [2022-01-18 02:56:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12422 states, 12421 states have (on average 2.8879317285242734) internal successors, (35871), 12421 states have internal predecessors, (35871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:03,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12422 states to 12422 states and 35871 transitions. [2022-01-18 02:56:03,186 INFO L78 Accepts]: Start accepts. Automaton has 12422 states and 35871 transitions. Word has length 139 [2022-01-18 02:56:03,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:56:03,186 INFO L470 AbstractCegarLoop]: Abstraction has 12422 states and 35871 transitions. [2022-01-18 02:56:03,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.3) internal successors, (363), 110 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:03,187 INFO L276 IsEmpty]: Start isEmpty. Operand 12422 states and 35871 transitions. [2022-01-18 02:56:03,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:56:03,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:56:03,197 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:56:03,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 02:56:03,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:56:03,397 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:56:03,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:56:03,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1566198338, now seen corresponding path program 38 times [2022-01-18 02:56:03,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:56:03,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739700660] [2022-01-18 02:56:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:56:03,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:56:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:56:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:05,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:56:05,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739700660] [2022-01-18 02:56:05,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739700660] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:56:05,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006822107] [2022-01-18 02:56:05,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:56:05,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:56:05,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:56:05,601 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:56:05,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 02:56:05,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:56:05,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:56:05,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 96 conjunts are in the unsatisfiable core [2022-01-18 02:56:05,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:56:06,365 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 02:56:06,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 02:56:06,761 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 [2022-01-18 02:56:07,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:56:08,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:56:08,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-01-18 02:56:09,329 INFO L353 Elim1Store]: treesize reduction 96, result has 6.8 percent of original size [2022-01-18 02:56:09,329 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 47 treesize of output 19 [2022-01-18 02:56:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:09,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:56:18,826 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-01-18 02:56:18,827 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 270 treesize of output 140 [2022-01-18 02:56:18,973 INFO L353 Elim1Store]: treesize reduction 142, result has 60.0 percent of original size [2022-01-18 02:56:18,973 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 444 treesize of output 563 [2022-01-18 02:56:19,013 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 02:56:19,014 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 563 treesize of output 564 [2022-01-18 02:56:19,034 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 02:56:19,034 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 251 treesize of output 199 [2022-01-18 02:56:19,056 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 02:56:19,056 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 199 treesize of output 173 [2022-01-18 02:56:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 41 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:59,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006822107] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:56:59,393 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:56:59,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 41, 43] total 115 [2022-01-18 02:56:59,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751558339] [2022-01-18 02:56:59,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:56:59,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2022-01-18 02:56:59,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:56:59,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2022-01-18 02:56:59,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1080, Invalid=11920, Unknown=110, NotChecked=0, Total=13110 [2022-01-18 02:56:59,396 INFO L87 Difference]: Start difference. First operand 12422 states and 35871 transitions. Second operand has 115 states, 115 states have (on average 3.1652173913043478) internal successors, (364), 115 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:57:08,972 INFO L93 Difference]: Finished difference Result 18184 states and 51863 transitions. [2022-01-18 02:57:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 02:57:08,973 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 3.1652173913043478) internal successors, (364), 115 states have internal predecessors, (364), 0 states have call successors, (0), 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 139 [2022-01-18 02:57:08,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:57:09,002 INFO L225 Difference]: With dead ends: 18184 [2022-01-18 02:57:09,002 INFO L226 Difference]: Without dead ends: 18133 [2022-01-18 02:57:09,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 232 SyntacticMatches, 14 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9205 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=3224, Invalid=28164, Unknown=118, NotChecked=0, Total=31506 [2022-01-18 02:57:09,003 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 2738 mSDsluCounter, 9350 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2738 SdHoareTripleChecker+Valid, 8985 SdHoareTripleChecker+Invalid, 4589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1965 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:57:09,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2738 Valid, 8985 Invalid, 4589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2445 Invalid, 0 Unknown, 1965 Unchecked, 1.2s Time] [2022-01-18 02:57:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18133 states. [2022-01-18 02:57:09,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18133 to 12601. [2022-01-18 02:57:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12601 states, 12600 states have (on average 2.8837301587301587) internal successors, (36335), 12600 states have internal predecessors, (36335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:09,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12601 states to 12601 states and 36335 transitions. [2022-01-18 02:57:09,198 INFO L78 Accepts]: Start accepts. Automaton has 12601 states and 36335 transitions. Word has length 139 [2022-01-18 02:57:09,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:57:09,198 INFO L470 AbstractCegarLoop]: Abstraction has 12601 states and 36335 transitions. [2022-01-18 02:57:09,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 3.1652173913043478) internal successors, (364), 115 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:09,198 INFO L276 IsEmpty]: Start isEmpty. Operand 12601 states and 36335 transitions. [2022-01-18 02:57:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:57:09,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:57:09,208 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:57:09,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 02:57:09,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:57:09,409 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:57:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:57:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1164899590, now seen corresponding path program 39 times [2022-01-18 02:57:09,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:57:09,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530818951] [2022-01-18 02:57:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:57:09,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:57:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:57:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:11,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:57:11,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530818951] [2022-01-18 02:57:11,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530818951] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:57:11,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811592367] [2022-01-18 02:57:11,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:57:11,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:57:11,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:57:11,681 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:57:11,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 02:57:11,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:57:11,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:57:11,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 02:57:11,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:57:13,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:57:13,242 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-01-18 02:57:13,941 INFO L353 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2022-01-18 02:57:13,942 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 49 treesize of output 29 [2022-01-18 02:57:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:57:14,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:57:16,288 INFO L353 Elim1Store]: treesize reduction 60, result has 38.1 percent of original size [2022-01-18 02:57:16,289 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 134 treesize of output 122 [2022-01-18 02:57:16,297 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 02:57:16,297 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 77 treesize of output 65 [2022-01-18 02:57:16,302 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-18 02:57:16,303 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 65 treesize of output 53 [2022-01-18 02:57:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:57:17,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811592367] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:57:17,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:57:17,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 29, 29] total 92 [2022-01-18 02:57:17,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522924432] [2022-01-18 02:57:17,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:57:17,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-01-18 02:57:17,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:57:17,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-01-18 02:57:17,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=7766, Unknown=7, NotChecked=0, Total=8372 [2022-01-18 02:57:17,762 INFO L87 Difference]: Start difference. First operand 12601 states and 36335 transitions. Second operand has 92 states, 92 states have (on average 3.652173913043478) internal successors, (336), 92 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:29,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:57:29,488 INFO L93 Difference]: Finished difference Result 14980 states and 42218 transitions. [2022-01-18 02:57:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-18 02:57:29,488 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.652173913043478) internal successors, (336), 92 states have internal predecessors, (336), 0 states have call successors, (0), 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 139 [2022-01-18 02:57:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:57:29,509 INFO L225 Difference]: With dead ends: 14980 [2022-01-18 02:57:29,509 INFO L226 Difference]: Without dead ends: 14910 [2022-01-18 02:57:29,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 258 SyntacticMatches, 7 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8339 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=2590, Invalid=26811, Unknown=11, NotChecked=0, Total=29412 [2022-01-18 02:57:29,511 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 2789 mSDsluCounter, 10337 mSDsCounter, 0 mSdLazyCounter, 2640 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2789 SdHoareTripleChecker+Valid, 9794 SdHoareTripleChecker+Invalid, 5007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2287 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:57:29,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2789 Valid, 9794 Invalid, 5007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2640 Invalid, 0 Unknown, 2287 Unchecked, 1.3s Time] [2022-01-18 02:57:29,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14910 states. [2022-01-18 02:57:29,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14910 to 13020. [2022-01-18 02:57:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13020 states, 13019 states have (on average 2.8757201013902756) internal successors, (37439), 13019 states have internal predecessors, (37439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13020 states to 13020 states and 37439 transitions. [2022-01-18 02:57:29,703 INFO L78 Accepts]: Start accepts. Automaton has 13020 states and 37439 transitions. Word has length 139 [2022-01-18 02:57:29,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:57:29,703 INFO L470 AbstractCegarLoop]: Abstraction has 13020 states and 37439 transitions. [2022-01-18 02:57:29,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.652173913043478) internal successors, (336), 92 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 13020 states and 37439 transitions. [2022-01-18 02:57:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 02:57:29,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:57:29,713 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:57:29,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 02:57:29,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 02:57:29,914 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:57:29,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:57:29,914 INFO L85 PathProgramCache]: Analyzing trace with hash 370778200, now seen corresponding path program 40 times [2022-01-18 02:57:29,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:57:29,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857460103] [2022-01-18 02:57:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:57:29,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:57:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:57:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:32,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:57:32,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857460103] [2022-01-18 02:57:32,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857460103] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:57:32,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788573189] [2022-01-18 02:57:32,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:57:32,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:57:32,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:57:32,189 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:57:32,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 02:57:32,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:57:32,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:57:32,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 94 conjunts are in the unsatisfiable core [2022-01-18 02:57:32,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:57:32,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 02:57:33,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 02:57:33,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 02:57:33,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 02:57:35,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:57:35,030 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-01-18 02:57:35,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:57:35,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:57:35,815 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:57:35,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 16 [2022-01-18 02:57:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:36,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-01-18 02:57:46,084 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:57:46,084 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:57:46,085 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 02:57:46,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 02:57:46,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 02:57:46,286 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 140 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 104 known predicates. [2022-01-18 02:57:46,287 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 02:57:46,287 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 02:57:46,289 INFO L732 BasicCegarLoop]: Path program histogram: [40, 3, 2, 1, 1, 1] [2022-01-18 02:57:46,291 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 02:57:46,291 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 02:57:46,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 02:57:46 BasicIcfg [2022-01-18 02:57:46,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 02:57:46,292 INFO L158 Benchmark]: Toolchain (without parser) took 713529.34ms. Allocated memory was 362.8MB in the beginning and 1.2GB in the end (delta: 790.6MB). Free memory was 309.1MB in the beginning and 336.5MB in the end (delta: -27.4MB). Peak memory consumption was 764.9MB. Max. memory is 16.0GB. [2022-01-18 02:57:46,292 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 325.7MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 02:57:46,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.49ms. Allocated memory is still 362.8MB. Free memory was 309.0MB in the beginning and 333.4MB in the end (delta: -24.4MB). Peak memory consumption was 17.3MB. Max. memory is 16.0GB. [2022-01-18 02:57:46,293 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.33ms. Allocated memory is still 362.8MB. Free memory was 333.4MB in the beginning and 331.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 02:57:46,293 INFO L158 Benchmark]: Boogie Preprocessor took 21.07ms. Allocated memory is still 362.8MB. Free memory was 331.3MB in the beginning and 330.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 02:57:46,293 INFO L158 Benchmark]: RCFGBuilder took 521.58ms. Allocated memory is still 362.8MB. Free memory was 330.2MB in the beginning and 308.2MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2022-01-18 02:57:46,293 INFO L158 Benchmark]: TraceAbstraction took 712695.97ms. Allocated memory was 362.8MB in the beginning and 1.2GB in the end (delta: 790.6MB). Free memory was 307.1MB in the beginning and 336.5MB in the end (delta: -29.4MB). Peak memory consumption was 762.3MB. Max. memory is 16.0GB. [2022-01-18 02:57:46,293 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 362.8MB. Free memory is still 325.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 251.49ms. Allocated memory is still 362.8MB. Free memory was 309.0MB in the beginning and 333.4MB in the end (delta: -24.4MB). Peak memory consumption was 17.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.33ms. Allocated memory is still 362.8MB. Free memory was 333.4MB in the beginning and 331.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.07ms. Allocated memory is still 362.8MB. Free memory was 331.3MB in the beginning and 330.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 521.58ms. Allocated memory is still 362.8MB. Free memory was 330.2MB in the beginning and 308.2MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 712695.97ms. Allocated memory was 362.8MB in the beginning and 1.2GB in the end (delta: 790.6MB). Free memory was 307.1MB in the beginning and 336.5MB in the end (delta: -29.4MB). Peak memory consumption was 762.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 140 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 104 known predicates. - TimeoutResultAtElement [Line: 93]: 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 140 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 104 known predicates. - TimeoutResultAtElement [Line: 92]: 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 140 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 104 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 146 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 712.6s, OverallIterations: 48, TraceHistogramMax: 4, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.3s, AutomataDifference: 343.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 110549 SdHoareTripleChecker+Valid, 59.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110549 mSDsluCounter, 299211 SdHoareTripleChecker+Invalid, 50.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 57211 IncrementalHoareTripleChecker+Unchecked, 316726 mSDsCounter, 7963 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 131002 IncrementalHoareTripleChecker+Invalid, 196176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7963 mSolverCounterUnsat, 8393 mSDtfsCounter, 131002 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16112 GetRequests, 9398 SyntacticMatches, 468 SemanticMatches, 6246 ConstructedPredicates, 15 IntricatePredicates, 2 DeprecatedPredicates, 319423 ImplicationChecksByTransitivity, 401.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13020occurred in iteration=47, InterpolantAutomatonStates: 3479, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 47 MinimizatonAttempts, 96394 StatesRemovedByMinimization, 45 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 332.2s InterpolantComputationTime, 11555 NumberOfCodeBlocks, 11399 NumberOfCodeBlocksAsserted, 141 NumberOfCheckSat, 16884 ConstructedInterpolants, 1658 QuantifiedInterpolants, 372914 SizeOfPredicates, 1377 NumberOfNonLiveVariables, 12745 ConjunctsInSsa, 2401 ConjunctsInUnsatCore, 132 InterpolantComputations, 5 PerfectInterpolantSequences, 777/3684 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