/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 14:29:41,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 14:29:41,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 14:29:41,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 14:29:41,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 14:29:41,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 14:29:41,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 14:29:41,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 14:29:41,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 14:29:41,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 14:29:41,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 14:29:41,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2022-03-15 14:29:41,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 14:29:41,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 14:29:41,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 14:29:41,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-15 14:29:41,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 14:29:41,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 14:29:41,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 14:29:41,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 14:29:41,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 14:29:41,906 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 14:29:41,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 14:29:41,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 14:29:41,907 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 14:29:41,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 14:29:41,908 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 14:29:41,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 14:29:41,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 14:29:41,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 14:29:41,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 14:29:41,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 14:29:41,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 14:29:41,908 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 14:29:41,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 14:29:41,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 14:29:41,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 14:29:41,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 14:29:41,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 14:29:41,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 14:29:41,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 14:29:41,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:29:41,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 14:29:41,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 14:29:41,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 14:29:41,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 14:29:41,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 14:29:41,910 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 14:29:41,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 14:29:41,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 14:29:42,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 14:29:42,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 14:29:42,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 14:29:42,131 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 14:29:42,131 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 14:29:42,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-03-15 14:29:42,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e96d18106/63df9c4a57f64a6a93056441cbe599d5/FLAG17870f822 [2022-03-15 14:29:42,526 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 14:29:42,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-03-15 14:29:42,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e96d18106/63df9c4a57f64a6a93056441cbe599d5/FLAG17870f822 [2022-03-15 14:29:42,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e96d18106/63df9c4a57f64a6a93056441cbe599d5 [2022-03-15 14:29:42,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 14:29:42,552 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 14:29:42,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 14:29:42,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 14:29:42,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 14:29:42,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:29:42" (1/1) ... [2022-03-15 14:29:42,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af341c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42, skipping insertion in model container [2022-03-15 14:29:42,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 02:29:42" (1/1) ... [2022-03-15 14:29:42,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 14:29:42,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 14:29:42,786 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2022-03-15 14:29:42,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:29:42,804 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 14:29:42,842 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2022-03-15 14:29:42,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 14:29:42,854 INFO L208 MainTranslator]: Completed translation [2022-03-15 14:29:42,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42 WrapperNode [2022-03-15 14:29:42,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 14:29:42,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 14:29:42,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 14:29:42,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 14:29:42,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42" (1/1) ... [2022-03-15 14:29:42,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42" (1/1) ... [2022-03-15 14:29:42,897 INFO L137 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 142 [2022-03-15 14:29:42,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 14:29:42,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 14:29:42,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 14:29:42,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 14:29:42,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42" (1/1) ... [2022-03-15 14:29:42,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42" (1/1) ... [2022-03-15 14:29:42,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42" (1/1) ... [2022-03-15 14:29:42,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42" (1/1) ... [2022-03-15 14:29:42,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42" (1/1) ... [2022-03-15 14:29:42,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42" (1/1) ... [2022-03-15 14:29:42,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42" (1/1) ... [2022-03-15 14:29:42,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 14:29:42,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 14:29:42,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 14:29:42,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 14:29:42,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42" (1/1) ... [2022-03-15 14:29:42,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 14:29:42,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:29:42,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 14:29:42,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 14:29:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 14:29:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 14:29:42,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 14:29:42,998 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 14:29:42,998 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 14:29:42,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 14:29:42,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 14:29:42,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 14:29:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 14:29:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 14:29:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-15 14:29:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 14:29:43,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 14:29:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 14:29:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 14:29:43,002 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 14:29:43,075 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 14:29:43,077 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 14:29:43,324 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 14:29:43,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 14:29:43,364 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-15 14:29:43,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:29:43 BoogieIcfgContainer [2022-03-15 14:29:43,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 14:29:43,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 14:29:43,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 14:29:43,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 14:29:43,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 02:29:42" (1/3) ... [2022-03-15 14:29:43,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9778d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:29:43, skipping insertion in model container [2022-03-15 14:29:43,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 02:29:42" (2/3) ... [2022-03-15 14:29:43,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9778d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 02:29:43, skipping insertion in model container [2022-03-15 14:29:43,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 02:29:43" (3/3) ... [2022-03-15 14:29:43,371 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2022-03-15 14:29:43,375 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 14:29:43,375 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 14:29:43,375 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 14:29:43,375 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 14:29:43,400 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,400 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,401 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,401 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,401 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,401 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,401 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,401 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,401 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,402 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,402 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,402 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,402 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,402 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,402 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,402 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,403 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,403 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,403 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,403 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,403 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,405 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,406 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,407 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,407 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,407 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,407 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,407 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,407 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,407 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,410 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,410 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,410 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,410 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 14:29:43,416 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 14:29:43,443 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 14:29:43,447 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 14:29:43,448 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 14:29:43,460 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 129 places, 133 transitions, 282 flow [2022-03-15 14:29:43,529 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:43,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:43,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-15 14:29:43,551 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:29:43,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:29:43,552 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:29:43,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:29:43,557 INFO L85 PathProgramCache]: Analyzing trace with hash -386855673, now seen corresponding path program 1 times [2022-03-15 14:29:43,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:29:43,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398276684] [2022-03-15 14:29:43,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:43,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:29:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:29:43,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:29:43,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398276684] [2022-03-15 14:29:43,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398276684] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:29:43,778 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:29:43,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 14:29:43,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753076652] [2022-03-15 14:29:43,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:29:43,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 14:29:43,783 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:29:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 14:29:43,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 14:29:43,803 INFO L87 Difference]: Start difference. First operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:43,844 INFO L93 Difference]: Finished difference Result 676 states and 1686 transitions. [2022-03-15 14:29:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 14:29:43,846 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-03-15 14:29:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:29:43,858 INFO L225 Difference]: With dead ends: 676 [2022-03-15 14:29:43,858 INFO L226 Difference]: Without dead ends: 642 [2022-03-15 14:29:43,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 14:29:43,866 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:29:43,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:29:43,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-03-15 14:29:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2022-03-15 14:29:43,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 2.49609984399376) internal successors, (1600), 641 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:43,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1600 transitions. [2022-03-15 14:29:43,936 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1600 transitions. Word has length 86 [2022-03-15 14:29:43,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:29:43,936 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 1600 transitions. [2022-03-15 14:29:43,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:43,937 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1600 transitions. [2022-03-15 14:29:43,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-15 14:29:43,940 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:29:43,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:29:43,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 14:29:43,940 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:29:43,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:29:43,941 INFO L85 PathProgramCache]: Analyzing trace with hash -897208069, now seen corresponding path program 1 times [2022-03-15 14:29:43,941 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:29:43,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553286283] [2022-03-15 14:29:43,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:43,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:29:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:29:44,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:29:44,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553286283] [2022-03-15 14:29:44,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553286283] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:29:44,084 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:29:44,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 14:29:44,084 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629809938] [2022-03-15 14:29:44,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:29:44,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 14:29:44,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:29:44,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 14:29:44,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-15 14:29:44,086 INFO L87 Difference]: Start difference. First operand 642 states and 1600 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:44,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:44,142 INFO L93 Difference]: Finished difference Result 1217 states and 3132 transitions. [2022-03-15 14:29:44,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 14:29:44,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-03-15 14:29:44,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:29:44,150 INFO L225 Difference]: With dead ends: 1217 [2022-03-15 14:29:44,150 INFO L226 Difference]: Without dead ends: 864 [2022-03-15 14:29:44,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 14:29:44,153 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:29:44,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 344 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:29:44,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-03-15 14:29:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 716. [2022-03-15 14:29:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 2.521678321678322) internal successors, (1803), 715 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:44,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1803 transitions. [2022-03-15 14:29:44,189 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1803 transitions. Word has length 88 [2022-03-15 14:29:44,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:29:44,190 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1803 transitions. [2022-03-15 14:29:44,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1803 transitions. [2022-03-15 14:29:44,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-15 14:29:44,194 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:29:44,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:29:44,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 14:29:44,195 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:29:44,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:29:44,195 INFO L85 PathProgramCache]: Analyzing trace with hash -672454208, now seen corresponding path program 1 times [2022-03-15 14:29:44,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:29:44,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690614419] [2022-03-15 14:29:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:44,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:29:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:29:44,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:29:44,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690614419] [2022-03-15 14:29:44,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690614419] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:29:44,367 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:29:44,367 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 14:29:44,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583633256] [2022-03-15 14:29:44,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:29:44,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 14:29:44,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:29:44,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 14:29:44,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 14:29:44,369 INFO L87 Difference]: Start difference. First operand 716 states and 1803 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:44,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:44,412 INFO L93 Difference]: Finished difference Result 843 states and 2119 transitions. [2022-03-15 14:29:44,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 14:29:44,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-03-15 14:29:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:29:44,416 INFO L225 Difference]: With dead ends: 843 [2022-03-15 14:29:44,416 INFO L226 Difference]: Without dead ends: 795 [2022-03-15 14:29:44,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 14:29:44,422 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:29:44,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 147 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:29:44,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-03-15 14:29:44,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2022-03-15 14:29:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 2.522670025188917) internal successors, (2003), 794 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:44,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2003 transitions. [2022-03-15 14:29:44,447 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2003 transitions. Word has length 91 [2022-03-15 14:29:44,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:29:44,448 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 2003 transitions. [2022-03-15 14:29:44,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:44,448 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2003 transitions. [2022-03-15 14:29:44,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-15 14:29:44,449 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:29:44,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:29:44,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 14:29:44,450 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:29:44,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:29:44,450 INFO L85 PathProgramCache]: Analyzing trace with hash 855435936, now seen corresponding path program 1 times [2022-03-15 14:29:44,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:29:44,450 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46549754] [2022-03-15 14:29:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:44,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:29:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:29:44,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:29:44,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46549754] [2022-03-15 14:29:44,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46549754] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:29:44,593 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:29:44,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:29:44,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969993607] [2022-03-15 14:29:44,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:29:44,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:29:44,594 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:29:44,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:29:44,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:29:44,595 INFO L87 Difference]: Start difference. First operand 795 states and 2003 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:44,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:44,730 INFO L93 Difference]: Finished difference Result 924 states and 2269 transitions. [2022-03-15 14:29:44,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 14:29:44,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-03-15 14:29:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:29:44,734 INFO L225 Difference]: With dead ends: 924 [2022-03-15 14:29:44,734 INFO L226 Difference]: Without dead ends: 801 [2022-03-15 14:29:44,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:29:44,737 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 269 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:29:44,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 484 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:29:44,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-03-15 14:29:44,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 796. [2022-03-15 14:29:44,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 2.520754716981132) internal successors, (2004), 795 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2004 transitions. [2022-03-15 14:29:44,753 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2004 transitions. Word has length 102 [2022-03-15 14:29:44,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:29:44,753 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 2004 transitions. [2022-03-15 14:29:44,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:44,753 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2004 transitions. [2022-03-15 14:29:44,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-15 14:29:44,755 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:29:44,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:29:44,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 14:29:44,756 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:29:44,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:29:44,757 INFO L85 PathProgramCache]: Analyzing trace with hash -881340959, now seen corresponding path program 1 times [2022-03-15 14:29:44,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:29:44,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514078013] [2022-03-15 14:29:44,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:44,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:29:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:29:45,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:29:45,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514078013] [2022-03-15 14:29:45,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514078013] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:29:45,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613240895] [2022-03-15 14:29:45,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:45,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:29:45,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:29:45,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:29:45,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 14:29:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:45,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-15 14:29:45,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:29:45,869 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:29:46,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:29:46,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:29:46,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-15 14:29:46,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:29:46,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:29:47,595 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:29:47,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 72 [2022-03-15 14:29:47,604 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:29:47,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 494 treesize of output 462 [2022-03-15 14:29:47,622 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:29:47,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 446 treesize of output 426 [2022-03-15 14:29:47,636 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:29:47,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 410 treesize of output 354 [2022-03-15 14:29:48,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:29:48,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613240895] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:29:48,709 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:29:48,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 23] total 49 [2022-03-15 14:29:48,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838365087] [2022-03-15 14:29:48,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:29:48,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-15 14:29:48,711 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:29:48,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-15 14:29:48,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=1741, Unknown=50, NotChecked=0, Total=2352 [2022-03-15 14:29:48,713 INFO L87 Difference]: Start difference. First operand 796 states and 2004 transitions. Second operand has 49 states, 49 states have (on average 5.673469387755102) internal successors, (278), 49 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:49,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:49,410 INFO L93 Difference]: Finished difference Result 1865 states and 4861 transitions. [2022-03-15 14:29:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:29:49,411 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.673469387755102) internal successors, (278), 49 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-03-15 14:29:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:29:49,418 INFO L225 Difference]: With dead ends: 1865 [2022-03-15 14:29:49,418 INFO L226 Difference]: Without dead ends: 1831 [2022-03-15 14:29:49,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 174 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1036, Invalid=3074, Unknown=50, NotChecked=0, Total=4160 [2022-03-15 14:29:49,420 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 769 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:29:49,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 1916 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 478 Invalid, 0 Unknown, 91 Unchecked, 0.2s Time] [2022-03-15 14:29:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-03-15 14:29:49,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1004. [2022-03-15 14:29:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 2.5692921236291126) internal successors, (2577), 1003 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:49,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 2577 transitions. [2022-03-15 14:29:49,442 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 2577 transitions. Word has length 109 [2022-03-15 14:29:49,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:29:49,442 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 2577 transitions. [2022-03-15 14:29:49,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.673469387755102) internal successors, (278), 49 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:49,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 2577 transitions. [2022-03-15 14:29:49,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-15 14:29:49,444 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:29:49,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:29:49,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 14:29:49,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:29:49,661 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:29:49,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:29:49,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1367436801, now seen corresponding path program 1 times [2022-03-15 14:29:49,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:29:49,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081647648] [2022-03-15 14:29:49,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:49,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:29:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:29:49,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:29:49,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081647648] [2022-03-15 14:29:49,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081647648] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:29:49,697 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:29:49,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 14:29:49,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085016793] [2022-03-15 14:29:49,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:29:49,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 14:29:49,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:29:49,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 14:29:49,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 14:29:49,698 INFO L87 Difference]: Start difference. First operand 1004 states and 2577 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:49,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:49,714 INFO L93 Difference]: Finished difference Result 983 states and 2495 transitions. [2022-03-15 14:29:49,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 14:29:49,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-03-15 14:29:49,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:29:49,718 INFO L225 Difference]: With dead ends: 983 [2022-03-15 14:29:49,718 INFO L226 Difference]: Without dead ends: 983 [2022-03-15 14:29:49,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 14:29:49,718 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 15 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:29:49,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 207 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:29:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-03-15 14:29:49,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 932. [2022-03-15 14:29:49,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 931 states have (on average 2.5381310418904404) internal successors, (2363), 931 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2363 transitions. [2022-03-15 14:29:49,734 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2363 transitions. Word has length 109 [2022-03-15 14:29:49,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:29:49,734 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 2363 transitions. [2022-03-15 14:29:49,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:49,735 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2363 transitions. [2022-03-15 14:29:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-15 14:29:49,736 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:29:49,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:29:49,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 14:29:49,737 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:29:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:29:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash -82845087, now seen corresponding path program 2 times [2022-03-15 14:29:49,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:29:49,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952817726] [2022-03-15 14:29:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:49,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:29:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:29:49,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:29:49,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952817726] [2022-03-15 14:29:49,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952817726] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:29:49,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18762039] [2022-03-15 14:29:49,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:29:49,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:29:49,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:29:49,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:29:49,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 14:29:49,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:29:49,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:29:49,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-15 14:29:49,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:29:49,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:29:50,466 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:29:50,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:29:50,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:29:50,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:29:51,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:29:51,242 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 23 treesize of output 7 [2022-03-15 14:29:51,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:29:51,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:29:52,302 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:29:52,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 72 [2022-03-15 14:29:52,312 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:29:52,312 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 232 treesize of output 224 [2022-03-15 14:29:52,320 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:29:52,321 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 208 treesize of output 188 [2022-03-15 14:29:52,330 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:29:52,330 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 170 [2022-03-15 14:29:53,513 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-15 14:29:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:29:53,575 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18762039] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:29:53,575 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:29:53,575 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 25] total 51 [2022-03-15 14:29:53,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773393768] [2022-03-15 14:29:53,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:29:53,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-15 14:29:53,576 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:29:53,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-15 14:29:53,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=1883, Unknown=55, NotChecked=0, Total=2550 [2022-03-15 14:29:53,577 INFO L87 Difference]: Start difference. First operand 932 states and 2363 transitions. Second operand has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:55,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:55,140 INFO L93 Difference]: Finished difference Result 3828 states and 10142 transitions. [2022-03-15 14:29:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 14:29:55,141 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-03-15 14:29:55,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:29:55,149 INFO L225 Difference]: With dead ends: 3828 [2022-03-15 14:29:55,149 INFO L226 Difference]: Without dead ends: 2560 [2022-03-15 14:29:55,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 177 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2234 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1548, Invalid=5537, Unknown=55, NotChecked=0, Total=7140 [2022-03-15 14:29:55,151 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 1194 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 608 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:29:55,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1194 Valid, 2204 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 660 Invalid, 0 Unknown, 608 Unchecked, 0.4s Time] [2022-03-15 14:29:55,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-03-15 14:29:55,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1334. [2022-03-15 14:29:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 2.557389347336834) internal successors, (3409), 1333 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 3409 transitions. [2022-03-15 14:29:55,180 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 3409 transitions. Word has length 109 [2022-03-15 14:29:55,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:29:55,181 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 3409 transitions. [2022-03-15 14:29:55,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:55,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 3409 transitions. [2022-03-15 14:29:55,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-03-15 14:29:55,185 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:29:55,185 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:29:55,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 14:29:55,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-03-15 14:29:55,391 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:29:55,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:29:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2079156415, now seen corresponding path program 3 times [2022-03-15 14:29:55,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:29:55,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405174174] [2022-03-15 14:29:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:55,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:29:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:29:55,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:29:55,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405174174] [2022-03-15 14:29:55,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405174174] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:29:55,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208956963] [2022-03-15 14:29:55,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:29:55,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:29:55,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:29:55,464 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:29:55,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 14:29:55,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 14:29:55,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:29:55,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 14:29:55,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:29:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 14:29:55,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:29:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 14:29:56,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208956963] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:29:56,049 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:29:56,049 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 17 [2022-03-15 14:29:56,049 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685387343] [2022-03-15 14:29:56,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:29:56,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 14:29:56,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:29:56,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 14:29:56,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-03-15 14:29:56,050 INFO L87 Difference]: Start difference. First operand 1334 states and 3409 transitions. Second operand has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:56,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:56,350 INFO L93 Difference]: Finished difference Result 3437 states and 8954 transitions. [2022-03-15 14:29:56,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 14:29:56,350 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-03-15 14:29:56,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:29:56,358 INFO L225 Difference]: With dead ends: 3437 [2022-03-15 14:29:56,358 INFO L226 Difference]: Without dead ends: 2222 [2022-03-15 14:29:56,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=750, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:29:56,359 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 1043 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:29:56,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 888 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:29:56,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2022-03-15 14:29:56,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1591. [2022-03-15 14:29:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 2.69811320754717) internal successors, (4290), 1590 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 4290 transitions. [2022-03-15 14:29:56,392 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 4290 transitions. Word has length 115 [2022-03-15 14:29:56,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:29:56,392 INFO L470 AbstractCegarLoop]: Abstraction has 1591 states and 4290 transitions. [2022-03-15 14:29:56,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 4290 transitions. [2022-03-15 14:29:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-15 14:29:56,396 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:29:56,396 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:29:56,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 14:29:56,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:29:56,613 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:29:56,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:29:56,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1436284997, now seen corresponding path program 4 times [2022-03-15 14:29:56,614 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:29:56,614 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963354573] [2022-03-15 14:29:56,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:56,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:29:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:56,669 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-15 14:29:56,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:29:56,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963354573] [2022-03-15 14:29:56,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963354573] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:29:56,670 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:29:56,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 14:29:56,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758912856] [2022-03-15 14:29:56,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:29:56,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 14:29:56,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:29:56,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 14:29:56,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 14:29:56,671 INFO L87 Difference]: Start difference. First operand 1591 states and 4290 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:56,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:29:56,696 INFO L93 Difference]: Finished difference Result 2542 states and 6823 transitions. [2022-03-15 14:29:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 14:29:56,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-03-15 14:29:56,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:29:56,705 INFO L225 Difference]: With dead ends: 2542 [2022-03-15 14:29:56,705 INFO L226 Difference]: Without dead ends: 2542 [2022-03-15 14:29:56,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 14:29:56,706 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 62 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:29:56,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 347 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:29:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2022-03-15 14:29:56,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2281. [2022-03-15 14:29:56,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 2280 states have (on average 2.7092105263157893) internal successors, (6177), 2280 states have internal predecessors, (6177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:56,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 6177 transitions. [2022-03-15 14:29:56,747 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 6177 transitions. Word has length 130 [2022-03-15 14:29:56,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:29:56,747 INFO L470 AbstractCegarLoop]: Abstraction has 2281 states and 6177 transitions. [2022-03-15 14:29:56,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:29:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 6177 transitions. [2022-03-15 14:29:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-15 14:29:56,751 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:29:56,751 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:29:56,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-15 14:29:56,751 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:29:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:29:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash -997919845, now seen corresponding path program 1 times [2022-03-15 14:29:56,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:29:56,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501431456] [2022-03-15 14:29:56,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:56,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:29:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:29:56,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:29:56,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501431456] [2022-03-15 14:29:56,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501431456] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:29:56,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012370849] [2022-03-15 14:29:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:29:56,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:29:56,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:29:56,923 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:29:56,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 14:29:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:29:57,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-15 14:29:57,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:29:57,963 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-15 14:29:57,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 14 [2022-03-15 14:29:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:29:57,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:29:58,428 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-15 14:29:58,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 78 [2022-03-15 14:29:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:29:59,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012370849] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:29:59,722 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:29:59,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21, 20] total 41 [2022-03-15 14:29:59,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134587083] [2022-03-15 14:29:59,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:29:59,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 14:29:59,722 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:29:59,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 14:29:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1266, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:29:59,723 INFO L87 Difference]: Start difference. First operand 2281 states and 6177 transitions. Second operand has 41 states, 41 states have (on average 7.878048780487805) internal successors, (323), 41 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:01,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:30:01,645 INFO L93 Difference]: Finished difference Result 13672 states and 36888 transitions. [2022-03-15 14:30:01,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 14:30:01,645 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.878048780487805) internal successors, (323), 41 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-03-15 14:30:01,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:30:01,686 INFO L225 Difference]: With dead ends: 13672 [2022-03-15 14:30:01,686 INFO L226 Difference]: Without dead ends: 8898 [2022-03-15 14:30:01,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 228 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1418, Invalid=6238, Unknown=0, NotChecked=0, Total=7656 [2022-03-15 14:30:01,689 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1915 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:30:01,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 3373 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 14:30:01,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2022-03-15 14:30:01,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 4847. [2022-03-15 14:30:01,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4847 states, 4846 states have (on average 2.73937267849773) internal successors, (13275), 4846 states have internal predecessors, (13275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 13275 transitions. [2022-03-15 14:30:01,854 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 13275 transitions. Word has length 130 [2022-03-15 14:30:01,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:30:01,854 INFO L470 AbstractCegarLoop]: Abstraction has 4847 states and 13275 transitions. [2022-03-15 14:30:01,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.878048780487805) internal successors, (323), 41 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:01,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 13275 transitions. [2022-03-15 14:30:01,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-03-15 14:30:01,862 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:30:01,862 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:30:01,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 14:30:02,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:02,080 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:30:02,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:30:02,080 INFO L85 PathProgramCache]: Analyzing trace with hash -116894547, now seen corresponding path program 2 times [2022-03-15 14:30:02,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:30:02,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630360256] [2022-03-15 14:30:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:30:02,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:30:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:30:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-15 14:30:02,263 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:30:02,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630360256] [2022-03-15 14:30:02,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630360256] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:30:02,263 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957477569] [2022-03-15 14:30:02,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:30:02,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:02,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:30:02,264 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:30:02,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 14:30:02,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:30:02,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:30:02,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-15 14:30:02,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:30:02,374 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:30:02,742 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:30:02,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:30:03,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:30:03,371 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:30:03,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:30:03,855 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-15 14:30:03,855 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 14 [2022-03-15 14:30:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:30:03,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:30:05,571 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:30:05,571 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 125 [2022-03-15 14:30:05,600 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-03-15 14:30:05,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 808 treesize of output 744 [2022-03-15 14:30:05,629 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-03-15 14:30:05,629 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 706 treesize of output 588 [2022-03-15 14:30:05,657 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-03-15 14:30:05,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 550 treesize of output 510 [2022-03-15 14:30:07,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-15 14:30:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:30:08,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957477569] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:30:08,009 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:30:08,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 30, 28] total 59 [2022-03-15 14:30:08,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959368144] [2022-03-15 14:30:08,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:30:08,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-03-15 14:30:08,010 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:30:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-03-15 14:30:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=2587, Unknown=71, NotChecked=0, Total=3422 [2022-03-15 14:30:08,011 INFO L87 Difference]: Start difference. First operand 4847 states and 13275 transitions. Second operand has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:11,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:30:11,872 INFO L93 Difference]: Finished difference Result 14477 states and 39566 transitions. [2022-03-15 14:30:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-15 14:30:11,872 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-03-15 14:30:11,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:30:11,904 INFO L225 Difference]: With dead ends: 14477 [2022-03-15 14:30:11,904 INFO L226 Difference]: Without dead ends: 13878 [2022-03-15 14:30:11,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 217 SyntacticMatches, 5 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3428 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2045, Invalid=8799, Unknown=76, NotChecked=0, Total=10920 [2022-03-15 14:30:11,907 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 2356 mSDsluCounter, 3779 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2356 SdHoareTripleChecker+Valid, 3795 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 594 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:30:11,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2356 Valid, 3795 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 995 Invalid, 0 Unknown, 594 Unchecked, 0.6s Time] [2022-03-15 14:30:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13878 states. [2022-03-15 14:30:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13878 to 7145. [2022-03-15 14:30:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7145 states, 7144 states have (on average 2.788073908174692) internal successors, (19918), 7144 states have internal predecessors, (19918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7145 states to 7145 states and 19918 transitions. [2022-03-15 14:30:12,143 INFO L78 Accepts]: Start accepts. Automaton has 7145 states and 19918 transitions. Word has length 130 [2022-03-15 14:30:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:30:12,144 INFO L470 AbstractCegarLoop]: Abstraction has 7145 states and 19918 transitions. [2022-03-15 14:30:12,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 7145 states and 19918 transitions. [2022-03-15 14:30:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-03-15 14:30:12,157 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:30:12,157 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:30:12,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-15 14:30:12,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-15 14:30:12,373 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:30:12,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:30:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2097043391, now seen corresponding path program 3 times [2022-03-15 14:30:12,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:30:12,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545949460] [2022-03-15 14:30:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:30:12,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:30:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:30:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-15 14:30:12,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:30:12,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545949460] [2022-03-15 14:30:12,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545949460] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:30:12,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519590650] [2022-03-15 14:30:12,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:30:12,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:12,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:30:12,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:30:12,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 14:30:12,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 14:30:12,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:30:12,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 14:30:12,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:30:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-15 14:30:12,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:30:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-15 14:30:13,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519590650] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:30:13,134 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:30:13,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 10 [2022-03-15 14:30:13,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393298957] [2022-03-15 14:30:13,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:30:13,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 14:30:13,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:30:13,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 14:30:13,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-15 14:30:13,137 INFO L87 Difference]: Start difference. First operand 7145 states and 19918 transitions. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:13,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:30:13,282 INFO L93 Difference]: Finished difference Result 13384 states and 36944 transitions. [2022-03-15 14:30:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 14:30:13,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-03-15 14:30:13,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:30:13,313 INFO L225 Difference]: With dead ends: 13384 [2022-03-15 14:30:13,313 INFO L226 Difference]: Without dead ends: 13144 [2022-03-15 14:30:13,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-15 14:30:13,315 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 409 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:30:13,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 423 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:30:13,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13144 states. [2022-03-15 14:30:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13144 to 10193. [2022-03-15 14:30:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10193 states, 10192 states have (on average 2.8116169544740974) internal successors, (28656), 10192 states have internal predecessors, (28656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 28656 transitions. [2022-03-15 14:30:13,558 INFO L78 Accepts]: Start accepts. Automaton has 10193 states and 28656 transitions. Word has length 140 [2022-03-15 14:30:13,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:30:13,558 INFO L470 AbstractCegarLoop]: Abstraction has 10193 states and 28656 transitions. [2022-03-15 14:30:13,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:13,559 INFO L276 IsEmpty]: Start isEmpty. Operand 10193 states and 28656 transitions. [2022-03-15 14:30:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 14:30:13,575 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:30:13,575 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:30:13,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-15 14:30:13,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:13,793 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:30:13,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:30:13,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1592177699, now seen corresponding path program 4 times [2022-03-15 14:30:13,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:30:13,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576847663] [2022-03-15 14:30:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:30:13,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:30:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:30:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:30:14,028 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:30:14,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576847663] [2022-03-15 14:30:14,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576847663] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:30:14,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697959899] [2022-03-15 14:30:14,028 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:30:14,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:14,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:30:14,029 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:30:14,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 14:30:14,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:30:14,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:30:14,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 14:30:14,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:30:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:30:14,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:30:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:30:15,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697959899] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:30:15,438 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:30:15,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 15] total 42 [2022-03-15 14:30:15,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386090689] [2022-03-15 14:30:15,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:30:15,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:30:15,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:30:15,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:30:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1438, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:30:15,440 INFO L87 Difference]: Start difference. First operand 10193 states and 28656 transitions. Second operand has 42 states, 42 states have (on average 7.428571428571429) internal successors, (312), 42 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:16,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:30:16,543 INFO L93 Difference]: Finished difference Result 5994 states and 16419 transitions. [2022-03-15 14:30:16,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:30:16,543 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.428571428571429) internal successors, (312), 42 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 14:30:16,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:30:16,552 INFO L225 Difference]: With dead ends: 5994 [2022-03-15 14:30:16,552 INFO L226 Difference]: Without dead ends: 4775 [2022-03-15 14:30:16,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1231, Invalid=4025, Unknown=0, NotChecked=0, Total=5256 [2022-03-15 14:30:16,553 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 957 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:30:16,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [957 Valid, 2485 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:30:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2022-03-15 14:30:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4770. [2022-03-15 14:30:16,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4769 states have (on average 2.8179911931222477) internal successors, (13439), 4769 states have internal predecessors, (13439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 13439 transitions. [2022-03-15 14:30:16,620 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 13439 transitions. Word has length 141 [2022-03-15 14:30:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:30:16,621 INFO L470 AbstractCegarLoop]: Abstraction has 4770 states and 13439 transitions. [2022-03-15 14:30:16,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.428571428571429) internal successors, (312), 42 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:30:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 13439 transitions. [2022-03-15 14:30:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 14:30:16,631 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:30:16,631 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:30:16,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 14:30:16,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:16,847 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:30:16,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:30:16,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1379001184, now seen corresponding path program 5 times [2022-03-15 14:30:16,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:30:16,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432983603] [2022-03-15 14:30:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:30:16,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:30:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:30:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:30:18,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:30:18,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432983603] [2022-03-15 14:30:18,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432983603] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:30:18,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568160341] [2022-03-15 14:30:18,798 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:30:18,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:30:18,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:30:18,800 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:30:18,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 14:30:18,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 14:30:18,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:30:18,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 58 conjunts are in the unsatisfiable core [2022-03-15 14:30:18,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:30:20,120 INFO L353 Elim1Store]: treesize reduction 63, result has 40.6 percent of original size [2022-03-15 14:30:20,121 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 58 [2022-03-15 14:30:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 9 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:30:20,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:30:21,041 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-03-15 14:30:21,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 64 [2022-03-15 14:30:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:30:22,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568160341] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:30:22,607 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:30:22,607 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 22, 22] total 72 [2022-03-15 14:30:22,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34443373] [2022-03-15 14:30:22,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:30:22,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-03-15 14:30:22,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:30:22,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-03-15 14:30:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=583, Invalid=4529, Unknown=0, NotChecked=0, Total=5112 [2022-03-15 14:30:22,609 INFO L87 Difference]: Start difference. First operand 4770 states and 13439 transitions. Second operand has 72 states, 72 states have (on average 5.513888888888889) internal successors, (397), 72 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:31:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:31:35,998 INFO L93 Difference]: Finished difference Result 62401 states and 172212 transitions. [2022-03-15 14:31:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 388 states. [2022-03-15 14:31:35,998 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 5.513888888888889) internal successors, (397), 72 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 14:31:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:31:36,105 INFO L225 Difference]: With dead ends: 62401 [2022-03-15 14:31:36,105 INFO L226 Difference]: Without dead ends: 46433 [2022-03-15 14:31:36,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 260 SyntacticMatches, 3 SemanticMatches, 448 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72942 ImplicationChecksByTransitivity, 66.5s TimeCoverageRelationStatistics Valid=32421, Invalid=169629, Unknown=0, NotChecked=0, Total=202050 [2022-03-15 14:31:36,120 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 9532 mSDsluCounter, 23679 mSDsCounter, 0 mSdLazyCounter, 9305 mSolverCounterSat, 905 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9532 SdHoareTripleChecker+Valid, 22142 SdHoareTripleChecker+Invalid, 10210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 905 IncrementalHoareTripleChecker+Valid, 9305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:31:36,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9532 Valid, 22142 Invalid, 10210 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [905 Valid, 9305 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-03-15 14:31:36,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46433 states. [2022-03-15 14:31:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46433 to 18997. [2022-03-15 14:31:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18997 states, 18996 states have (on average 2.859391450831754) internal successors, (54317), 18996 states have internal predecessors, (54317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:31:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18997 states to 18997 states and 54317 transitions. [2022-03-15 14:31:36,782 INFO L78 Accepts]: Start accepts. Automaton has 18997 states and 54317 transitions. Word has length 148 [2022-03-15 14:31:36,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:31:36,782 INFO L470 AbstractCegarLoop]: Abstraction has 18997 states and 54317 transitions. [2022-03-15 14:31:36,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 5.513888888888889) internal successors, (397), 72 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:31:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 18997 states and 54317 transitions. [2022-03-15 14:31:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-15 14:31:36,798 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:31:36,799 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:31:36,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 14:31:37,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-15 14:31:37,008 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:31:37,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:31:37,008 INFO L85 PathProgramCache]: Analyzing trace with hash -681406591, now seen corresponding path program 6 times [2022-03-15 14:31:37,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:31:37,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919529663] [2022-03-15 14:31:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:31:37,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:31:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:31:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:31:37,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:31:37,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919529663] [2022-03-15 14:31:37,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919529663] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:31:37,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960392829] [2022-03-15 14:31:37,892 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:31:37,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:31:37,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:31:37,893 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:31:37,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 14:31:38,074 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 14:31:38,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:31:38,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-15 14:31:38,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:31:38,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:31:39,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:31:39,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:31:40,453 INFO L353 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2022-03-15 14:31:40,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 18 [2022-03-15 14:31:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:31:40,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:31:43,310 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:31:43,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 272 treesize of output 176 [2022-03-15 14:31:43,371 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-03-15 14:31:43,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1106 treesize of output 1028 [2022-03-15 14:31:43,451 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-03-15 14:31:43,451 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 950 treesize of output 908 [2022-03-15 14:31:43,527 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-03-15 14:31:43,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 830 treesize of output 668 [2022-03-15 14:31:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:31:48,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960392829] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:31:48,423 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:31:48,423 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 34, 31] total 86 [2022-03-15 14:31:48,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631296606] [2022-03-15 14:31:48,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:31:48,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-03-15 14:31:48,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:31:48,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-03-15 14:31:48,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1478, Invalid=5786, Unknown=46, NotChecked=0, Total=7310 [2022-03-15 14:31:48,425 INFO L87 Difference]: Start difference. First operand 18997 states and 54317 transitions. Second operand has 86 states, 86 states have (on average 4.6976744186046515) internal successors, (404), 86 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:07,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:32:07,954 INFO L93 Difference]: Finished difference Result 41656 states and 114549 transitions. [2022-03-15 14:32:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2022-03-15 14:32:07,954 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.6976744186046515) internal successors, (404), 86 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-03-15 14:32:07,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:32:08,023 INFO L225 Difference]: With dead ends: 41656 [2022-03-15 14:32:08,024 INFO L226 Difference]: Without dead ends: 30816 [2022-03-15 14:32:08,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 260 SyntacticMatches, 4 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24204 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=7352, Invalid=51361, Unknown=93, NotChecked=0, Total=58806 [2022-03-15 14:32:08,028 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 4259 mSDsluCounter, 13846 mSDsCounter, 0 mSdLazyCounter, 4724 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4259 SdHoareTripleChecker+Valid, 13250 SdHoareTripleChecker+Invalid, 6925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 4724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1940 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:32:08,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4259 Valid, 13250 Invalid, 6925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 4724 Invalid, 0 Unknown, 1940 Unchecked, 2.7s Time] [2022-03-15 14:32:08,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30816 states. [2022-03-15 14:32:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30816 to 20819. [2022-03-15 14:32:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20819 states, 20818 states have (on average 2.8467191853203957) internal successors, (59263), 20818 states have internal predecessors, (59263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20819 states to 20819 states and 59263 transitions. [2022-03-15 14:32:08,560 INFO L78 Accepts]: Start accepts. Automaton has 20819 states and 59263 transitions. Word has length 151 [2022-03-15 14:32:08,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:32:08,560 INFO L470 AbstractCegarLoop]: Abstraction has 20819 states and 59263 transitions. [2022-03-15 14:32:08,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.6976744186046515) internal successors, (404), 86 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:08,561 INFO L276 IsEmpty]: Start isEmpty. Operand 20819 states and 59263 transitions. [2022-03-15 14:32:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-15 14:32:08,581 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:32:08,581 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:32:08,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 14:32:08,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-15 14:32:08,796 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:32:08,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:32:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash 3636753, now seen corresponding path program 7 times [2022-03-15 14:32:08,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:32:08,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191439243] [2022-03-15 14:32:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:32:08,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:32:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:32:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-15 14:32:09,002 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:32:09,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191439243] [2022-03-15 14:32:09,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191439243] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:32:09,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385826685] [2022-03-15 14:32:09,002 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:32:09,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:32:09,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:32:09,003 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:32:09,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 14:32:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:32:09,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-15 14:32:09,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:32:10,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:32:10,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:32:10,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:32:10,754 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:32:10,754 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 18 [2022-03-15 14:32:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:32:10,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:32:11,578 INFO L353 Elim1Store]: treesize reduction 154, result has 41.0 percent of original size [2022-03-15 14:32:11,578 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 138 [2022-03-15 14:32:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:32:13,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385826685] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:32:13,458 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:32:13,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 31, 25] total 57 [2022-03-15 14:32:13,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263970684] [2022-03-15 14:32:13,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:32:13,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-15 14:32:13,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:32:13,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-15 14:32:13,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=2536, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 14:32:13,460 INFO L87 Difference]: Start difference. First operand 20819 states and 59263 transitions. Second operand has 57 states, 57 states have (on average 6.649122807017544) internal successors, (379), 57 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:21,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:32:21,523 INFO L93 Difference]: Finished difference Result 75157 states and 209644 transitions. [2022-03-15 14:32:21,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-03-15 14:32:21,523 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 6.649122807017544) internal successors, (379), 57 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-03-15 14:32:21,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:32:21,670 INFO L225 Difference]: With dead ends: 75157 [2022-03-15 14:32:21,671 INFO L226 Difference]: Without dead ends: 54838 [2022-03-15 14:32:21,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 253 SyntacticMatches, 6 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15826 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=4822, Invalid=36998, Unknown=0, NotChecked=0, Total=41820 [2022-03-15 14:32:21,675 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 3899 mSDsluCounter, 8751 mSDsCounter, 0 mSdLazyCounter, 3323 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3899 SdHoareTripleChecker+Valid, 8454 SdHoareTripleChecker+Invalid, 3547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 3323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:32:21,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3899 Valid, 8454 Invalid, 3547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 3323 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 14:32:21,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54838 states. [2022-03-15 14:32:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54838 to 28967. [2022-03-15 14:32:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28967 states, 28966 states have (on average 2.8235172270938342) internal successors, (81786), 28966 states have internal predecessors, (81786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28967 states to 28967 states and 81786 transitions. [2022-03-15 14:32:22,472 INFO L78 Accepts]: Start accepts. Automaton has 28967 states and 81786 transitions. Word has length 151 [2022-03-15 14:32:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:32:22,472 INFO L470 AbstractCegarLoop]: Abstraction has 28967 states and 81786 transitions. [2022-03-15 14:32:22,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 6.649122807017544) internal successors, (379), 57 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:22,473 INFO L276 IsEmpty]: Start isEmpty. Operand 28967 states and 81786 transitions. [2022-03-15 14:32:22,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-15 14:32:22,496 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:32:22,496 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:32:22,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 14:32:22,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-15 14:32:22,718 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:32:22,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:32:22,718 INFO L85 PathProgramCache]: Analyzing trace with hash -687760343, now seen corresponding path program 8 times [2022-03-15 14:32:22,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:32:22,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2230569] [2022-03-15 14:32:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:32:22,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:32:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:32:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-15 14:32:23,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:32:23,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2230569] [2022-03-15 14:32:23,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2230569] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:32:23,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129609405] [2022-03-15 14:32:23,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:32:23,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:32:23,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:32:23,204 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:32:23,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 14:32:23,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:32:23,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:32:23,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 91 conjunts are in the unsatisfiable core [2022-03-15 14:32:23,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:32:24,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:32:24,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:32:24,623 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:32:25,419 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-03-15 14:32:25,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 22 [2022-03-15 14:32:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:32:25,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:32:27,790 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:32:27,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 272 treesize of output 176 [2022-03-15 14:32:27,845 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-03-15 14:32:27,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 528 treesize of output 528 [2022-03-15 14:32:27,900 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-03-15 14:32:27,901 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 450 treesize of output 408 [2022-03-15 14:32:27,972 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-03-15 14:32:27,973 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 330 treesize of output 348 [2022-03-15 14:32:33,040 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:32:33,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129609405] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:32:33,040 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:32:33,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 38, 34] total 75 [2022-03-15 14:32:33,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686218536] [2022-03-15 14:32:33,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:32:33,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-03-15 14:32:33,041 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:32:33,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-03-15 14:32:33,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=4477, Unknown=67, NotChecked=0, Total=5550 [2022-03-15 14:32:33,042 INFO L87 Difference]: Start difference. First operand 28967 states and 81786 transitions. Second operand has 75 states, 75 states have (on average 5.2) internal successors, (390), 75 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:49,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:32:49,542 INFO L93 Difference]: Finished difference Result 93572 states and 259918 transitions. [2022-03-15 14:32:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-03-15 14:32:49,543 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 5.2) internal successors, (390), 75 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-03-15 14:32:49,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:32:49,856 INFO L225 Difference]: With dead ends: 93572 [2022-03-15 14:32:49,856 INFO L226 Difference]: Without dead ends: 73592 [2022-03-15 14:32:49,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 237 SyntacticMatches, 5 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25091 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=7240, Invalid=59515, Unknown=67, NotChecked=0, Total=66822 [2022-03-15 14:32:49,859 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 7045 mSDsluCounter, 13550 mSDsCounter, 0 mSdLazyCounter, 4590 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7045 SdHoareTripleChecker+Valid, 12753 SdHoareTripleChecker+Invalid, 6824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 4590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1773 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:32:49,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7045 Valid, 12753 Invalid, 6824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 4590 Invalid, 0 Unknown, 1773 Unchecked, 2.5s Time] [2022-03-15 14:32:49,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73592 states. [2022-03-15 14:32:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73592 to 32625. [2022-03-15 14:32:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32625 states, 32624 states have (on average 2.8049288867091713) internal successors, (91508), 32624 states have internal predecessors, (91508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:50,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32625 states to 32625 states and 91508 transitions. [2022-03-15 14:32:50,778 INFO L78 Accepts]: Start accepts. Automaton has 32625 states and 91508 transitions. Word has length 151 [2022-03-15 14:32:50,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:32:50,779 INFO L470 AbstractCegarLoop]: Abstraction has 32625 states and 91508 transitions. [2022-03-15 14:32:50,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 5.2) internal successors, (390), 75 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:50,779 INFO L276 IsEmpty]: Start isEmpty. Operand 32625 states and 91508 transitions. [2022-03-15 14:32:50,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 14:32:50,806 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:32:50,806 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:32:50,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 14:32:51,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 14:32:51,019 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:32:51,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:32:51,020 INFO L85 PathProgramCache]: Analyzing trace with hash -914560453, now seen corresponding path program 9 times [2022-03-15 14:32:51,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:32:51,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558187247] [2022-03-15 14:32:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:32:51,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:32:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:32:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 14:32:51,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:32:51,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558187247] [2022-03-15 14:32:51,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558187247] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:32:51,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114591199] [2022-03-15 14:32:51,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:32:51,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:32:51,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:32:51,085 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:32:51,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 14:32:51,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 14:32:51,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:32:51,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 14:32:51,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:32:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 14:32:51,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:32:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 14:32:52,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114591199] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:32:52,010 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:32:52,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 9] total 14 [2022-03-15 14:32:52,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150421943] [2022-03-15 14:32:52,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:32:52,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 14:32:52,010 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:32:52,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 14:32:52,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:32:52,011 INFO L87 Difference]: Start difference. First operand 32625 states and 91508 transitions. Second operand has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:52,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:32:52,243 INFO L93 Difference]: Finished difference Result 53388 states and 149861 transitions. [2022-03-15 14:32:52,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 14:32:52,243 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 14:32:52,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:32:52,360 INFO L225 Difference]: With dead ends: 53388 [2022-03-15 14:32:52,360 INFO L226 Difference]: Without dead ends: 52604 [2022-03-15 14:32:52,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-03-15 14:32:52,361 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 660 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:32:52,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 596 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:32:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52604 states. [2022-03-15 14:32:53,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52604 to 38395. [2022-03-15 14:32:53,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38395 states, 38394 states have (on average 2.8217690264103767) internal successors, (108339), 38394 states have internal predecessors, (108339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38395 states to 38395 states and 108339 transitions. [2022-03-15 14:32:53,595 INFO L78 Accepts]: Start accepts. Automaton has 38395 states and 108339 transitions. Word has length 161 [2022-03-15 14:32:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:32:53,596 INFO L470 AbstractCegarLoop]: Abstraction has 38395 states and 108339 transitions. [2022-03-15 14:32:53,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 14 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:53,596 INFO L276 IsEmpty]: Start isEmpty. Operand 38395 states and 108339 transitions. [2022-03-15 14:32:53,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-03-15 14:32:53,736 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:32:53,737 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:32:53,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 14:32:53,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 14:32:53,952 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:32:53,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:32:53,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1215682146, now seen corresponding path program 10 times [2022-03-15 14:32:53,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:32:53,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563876813] [2022-03-15 14:32:53,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:32:53,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:32:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:32:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 42 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 14:32:54,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:32:54,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563876813] [2022-03-15 14:32:54,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563876813] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:32:54,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184222682] [2022-03-15 14:32:54,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:32:54,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:32:54,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:32:54,147 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:32:54,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 14:32:54,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:32:54,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:32:54,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 14:32:54,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:32:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 72 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-15 14:32:54,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:32:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 15 proven. 81 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-03-15 14:32:55,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184222682] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:32:55,372 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:32:55,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 44 [2022-03-15 14:32:55,372 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509097821] [2022-03-15 14:32:55,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:32:55,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-15 14:32:55,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:32:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-15 14:32:55,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:32:55,373 INFO L87 Difference]: Start difference. First operand 38395 states and 108339 transitions. Second operand has 44 states, 44 states have (on average 7.795454545454546) internal successors, (343), 44 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:32:57,302 INFO L93 Difference]: Finished difference Result 12302 states and 33231 transitions. [2022-03-15 14:32:57,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:32:57,303 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 7.795454545454546) internal successors, (343), 44 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2022-03-15 14:32:57,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:32:57,316 INFO L225 Difference]: With dead ends: 12302 [2022-03-15 14:32:57,317 INFO L226 Difference]: Without dead ends: 9263 [2022-03-15 14:32:57,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1725, Invalid=5931, Unknown=0, NotChecked=0, Total=7656 [2022-03-15 14:32:57,318 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1413 mSDsluCounter, 4928 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 5173 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:32:57,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 5173 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:32:57,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9263 states. [2022-03-15 14:32:57,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9263 to 9263. [2022-03-15 14:32:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9263 states, 9262 states have (on average 2.7618225005398402) internal successors, (25580), 9262 states have internal predecessors, (25580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 25580 transitions. [2022-03-15 14:32:57,463 INFO L78 Accepts]: Start accepts. Automaton has 9263 states and 25580 transitions. Word has length 165 [2022-03-15 14:32:57,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:32:57,463 INFO L470 AbstractCegarLoop]: Abstraction has 9263 states and 25580 transitions. [2022-03-15 14:32:57,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 7.795454545454546) internal successors, (343), 44 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:32:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 9263 states and 25580 transitions. [2022-03-15 14:32:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-03-15 14:32:57,474 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:32:57,474 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:32:57,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 14:32:57,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:32:57,691 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:32:57,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:32:57,691 INFO L85 PathProgramCache]: Analyzing trace with hash 761820768, now seen corresponding path program 11 times [2022-03-15 14:32:57,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:32:57,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905549563] [2022-03-15 14:32:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:32:57,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:32:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:32:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 20 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:32:59,920 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:32:59,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905549563] [2022-03-15 14:32:59,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905549563] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:32:59,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239243624] [2022-03-15 14:32:59,921 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:32:59,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:32:59,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:32:59,922 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:32:59,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 14:33:00,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 14:33:00,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:33:00,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 65 conjunts are in the unsatisfiable core [2022-03-15 14:33:00,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:33:03,148 INFO L353 Elim1Store]: treesize reduction 162, result has 4.1 percent of original size [2022-03-15 14:33:03,149 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 28 [2022-03-15 14:33:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 20 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:33:03,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:33:04,312 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-03-15 14:33:04,312 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 152 [2022-03-15 14:33:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 11 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:33:07,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239243624] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:33:07,250 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:33:07,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 30, 30] total 90 [2022-03-15 14:33:07,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122374530] [2022-03-15 14:33:07,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:33:07,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-03-15 14:33:07,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:33:07,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-03-15 14:33:07,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=7394, Unknown=0, NotChecked=0, Total=8010 [2022-03-15 14:33:07,252 INFO L87 Difference]: Start difference. First operand 9263 states and 25580 transitions. Second operand has 90 states, 90 states have (on average 5.088888888888889) internal successors, (458), 90 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:33:17,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:33:17,591 INFO L93 Difference]: Finished difference Result 54033 states and 148244 transitions. [2022-03-15 14:33:17,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-15 14:33:17,592 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 5.088888888888889) internal successors, (458), 90 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-03-15 14:33:17,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:33:17,697 INFO L225 Difference]: With dead ends: 54033 [2022-03-15 14:33:17,697 INFO L226 Difference]: Without dead ends: 53459 [2022-03-15 14:33:17,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 297 SyntacticMatches, 5 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9789 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=3149, Invalid=29431, Unknown=0, NotChecked=0, Total=32580 [2022-03-15 14:33:17,699 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 4056 mSDsluCounter, 20921 mSDsCounter, 0 mSdLazyCounter, 4907 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 19939 SdHoareTripleChecker+Invalid, 7870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 4907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2750 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:33:17,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4056 Valid, 19939 Invalid, 7870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 4907 Invalid, 0 Unknown, 2750 Unchecked, 2.4s Time] [2022-03-15 14:33:17,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53459 states. [2022-03-15 14:33:18,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53459 to 29629. [2022-03-15 14:33:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29629 states, 29628 states have (on average 2.8401174564601055) internal successors, (84147), 29628 states have internal predecessors, (84147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:33:18,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29629 states to 29629 states and 84147 transitions. [2022-03-15 14:33:18,410 INFO L78 Accepts]: Start accepts. Automaton has 29629 states and 84147 transitions. Word has length 169 [2022-03-15 14:33:18,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:33:18,411 INFO L470 AbstractCegarLoop]: Abstraction has 29629 states and 84147 transitions. [2022-03-15 14:33:18,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 5.088888888888889) internal successors, (458), 90 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:33:18,411 INFO L276 IsEmpty]: Start isEmpty. Operand 29629 states and 84147 transitions. [2022-03-15 14:33:18,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-03-15 14:33:18,433 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:33:18,433 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:33:18,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 14:33:18,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:33:18,634 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:33:18,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:33:18,635 INFO L85 PathProgramCache]: Analyzing trace with hash 841327630, now seen corresponding path program 12 times [2022-03-15 14:33:18,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:33:18,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109874440] [2022-03-15 14:33:18,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:33:18,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:33:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:33:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:33:20,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:33:20,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109874440] [2022-03-15 14:33:20,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109874440] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:33:20,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099841367] [2022-03-15 14:33:20,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:33:20,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:33:20,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:33:20,666 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:33:20,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 14:33:20,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 14:33:20,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:33:20,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-15 14:33:20,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:33:21,940 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-03-15 14:33:21,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 18 [2022-03-15 14:33:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-03-15 14:33:22,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:33:22,643 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-03-15 14:33:22,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-03-15 14:33:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 20 proven. 58 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-15 14:33:23,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099841367] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:33:23,490 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:33:23,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 17, 12] total 60 [2022-03-15 14:33:23,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272595802] [2022-03-15 14:33:23,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:33:23,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-03-15 14:33:23,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:33:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-03-15 14:33:23,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=3265, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 14:33:23,491 INFO L87 Difference]: Start difference. First operand 29629 states and 84147 transitions. Second operand has 60 states, 60 states have (on average 7.15) internal successors, (429), 60 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:33:41,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:33:41,611 INFO L93 Difference]: Finished difference Result 76773 states and 212793 transitions. [2022-03-15 14:33:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-03-15 14:33:41,612 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 7.15) internal successors, (429), 60 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-03-15 14:33:41,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:33:41,746 INFO L225 Difference]: With dead ends: 76773 [2022-03-15 14:33:41,746 INFO L226 Difference]: Without dead ends: 64836 [2022-03-15 14:33:41,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 318 SyntacticMatches, 1 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14255 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=3883, Invalid=39173, Unknown=0, NotChecked=0, Total=43056 [2022-03-15 14:33:41,749 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 3746 mSDsluCounter, 13517 mSDsCounter, 0 mSdLazyCounter, 5201 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3746 SdHoareTripleChecker+Valid, 13385 SdHoareTripleChecker+Invalid, 5554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 5201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:33:41,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3746 Valid, 13385 Invalid, 5554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 5201 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-03-15 14:33:41,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64836 states. [2022-03-15 14:33:42,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64836 to 37154. [2022-03-15 14:33:42,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37154 states, 37153 states have (on average 2.858234866632573) internal successors, (106192), 37153 states have internal predecessors, (106192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:33:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37154 states to 37154 states and 106192 transitions. [2022-03-15 14:33:42,767 INFO L78 Accepts]: Start accepts. Automaton has 37154 states and 106192 transitions. Word has length 169 [2022-03-15 14:33:42,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:33:42,767 INFO L470 AbstractCegarLoop]: Abstraction has 37154 states and 106192 transitions. [2022-03-15 14:33:42,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 7.15) internal successors, (429), 60 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:33:42,767 INFO L276 IsEmpty]: Start isEmpty. Operand 37154 states and 106192 transitions. [2022-03-15 14:33:42,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-15 14:33:42,941 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:33:42,941 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:33:42,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-03-15 14:33:43,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:33:43,143 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:33:43,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:33:43,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1266953787, now seen corresponding path program 13 times [2022-03-15 14:33:43,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:33:43,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011873366] [2022-03-15 14:33:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:33:43,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:33:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:33:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:33:44,181 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:33:44,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011873366] [2022-03-15 14:33:44,181 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011873366] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:33:44,181 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586566845] [2022-03-15 14:33:44,181 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:33:44,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:33:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:33:44,182 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:33:44,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 14:33:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:33:44,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 111 conjunts are in the unsatisfiable core [2022-03-15 14:33:44,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:33:44,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:33:44,810 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:33:44,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:33:45,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:33:45,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:33:45,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:33:46,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:33:46,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:33:48,336 INFO L353 Elim1Store]: treesize reduction 345, result has 2.8 percent of original size [2022-03-15 14:33:48,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 95 treesize of output 36 [2022-03-15 14:33:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 31 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:33:48,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:34:11,498 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-03-15 14:34:11,499 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 550 treesize of output 252 [2022-03-15 14:34:11,675 INFO L353 Elim1Store]: treesize reduction 253, result has 46.2 percent of original size [2022-03-15 14:34:11,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 668 treesize of output 782 [2022-03-15 14:34:11,848 INFO L353 Elim1Store]: treesize reduction 253, result has 46.2 percent of original size [2022-03-15 14:34:11,848 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 566 treesize of output 626 [2022-03-15 14:34:12,035 INFO L353 Elim1Store]: treesize reduction 253, result has 46.2 percent of original size [2022-03-15 14:34:12,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 410 treesize of output 548 [2022-03-15 14:40:19,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-15 14:40:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 20 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:19,647 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586566845] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:40:19,647 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:40:19,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 41, 41] total 107 [2022-03-15 14:40:19,647 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432814251] [2022-03-15 14:40:19,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:40:19,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-03-15 14:40:19,648 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:40:19,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-03-15 14:40:19,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1287, Invalid=9966, Unknown=89, NotChecked=0, Total=11342 [2022-03-15 14:40:19,649 INFO L87 Difference]: Start difference. First operand 37154 states and 106192 transitions. Second operand has 107 states, 107 states have (on average 4.364485981308412) internal successors, (467), 107 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:40:24,385 INFO L93 Difference]: Finished difference Result 48691 states and 137252 transitions. [2022-03-15 14:40:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-15 14:40:24,386 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 4.364485981308412) internal successors, (467), 107 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-03-15 14:40:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:40:24,485 INFO L225 Difference]: With dead ends: 48691 [2022-03-15 14:40:24,485 INFO L226 Difference]: Without dead ends: 47694 [2022-03-15 14:40:24,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 287 SyntacticMatches, 10 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7655 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=2828, Invalid=20035, Unknown=89, NotChecked=0, Total=22952 [2022-03-15 14:40:24,487 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2707 mSDsluCounter, 9531 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2707 SdHoareTripleChecker+Valid, 9584 SdHoareTripleChecker+Invalid, 4281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2770 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:40:24,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2707 Valid, 9584 Invalid, 4281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1460 Invalid, 0 Unknown, 2770 Unchecked, 0.6s Time] [2022-03-15 14:40:24,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47694 states. [2022-03-15 14:40:25,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47694 to 38969. [2022-03-15 14:40:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38969 states, 38968 states have (on average 2.845976185588175) internal successors, (110902), 38968 states have internal predecessors, (110902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:25,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38969 states to 38969 states and 110902 transitions. [2022-03-15 14:40:25,266 INFO L78 Accepts]: Start accepts. Automaton has 38969 states and 110902 transitions. Word has length 172 [2022-03-15 14:40:25,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:40:25,266 INFO L470 AbstractCegarLoop]: Abstraction has 38969 states and 110902 transitions. [2022-03-15 14:40:25,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 4.364485981308412) internal successors, (467), 107 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:40:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 38969 states and 110902 transitions. [2022-03-15 14:40:25,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-03-15 14:40:25,299 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:40:25,299 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:40:25,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 14:40:25,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-15 14:40:25,502 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:40:25,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:40:25,502 INFO L85 PathProgramCache]: Analyzing trace with hash -966067763, now seen corresponding path program 14 times [2022-03-15 14:40:25,502 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:40:25,502 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807185941] [2022-03-15 14:40:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:40:25,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:40:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:40:27,436 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:27,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:40:27,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807185941] [2022-03-15 14:40:27,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807185941] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:40:27,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824215769] [2022-03-15 14:40:27,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:40:27,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:40:27,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:40:27,438 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:40:27,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 14:40:27,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:40:27,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:40:27,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 103 conjunts are in the unsatisfiable core [2022-03-15 14:40:27,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:40:29,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 14:40:29,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:40:29,594 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:40:31,558 INFO L353 Elim1Store]: treesize reduction 345, result has 2.8 percent of original size [2022-03-15 14:40:31,558 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 92 treesize of output 33 [2022-03-15 14:40:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:40:31,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:41:48,006 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:41:48,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 355 treesize of output 223 [2022-03-15 14:41:48,216 INFO L353 Elim1Store]: treesize reduction 253, result has 46.2 percent of original size [2022-03-15 14:41:48,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 656 treesize of output 773 [2022-03-15 14:41:48,444 INFO L353 Elim1Store]: treesize reduction 253, result has 46.2 percent of original size [2022-03-15 14:41:48,445 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 557 treesize of output 623 [2022-03-15 14:41:48,683 INFO L353 Elim1Store]: treesize reduction 253, result has 46.2 percent of original size [2022-03-15 14:41:48,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 407 treesize of output 548 Received shutdown request... [2022-03-15 14:43:08,153 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-03-15 14:43:08,154 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 14:43:08,160 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 14:43:08,161 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 14:43:08,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 14:43:08,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:43:08,356 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 173 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 13ms.. [2022-03-15 14:43:08,357 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 14:43:08,357 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 14:43:08,359 INFO L732 BasicCegarLoop]: Path program histogram: [14, 4, 1, 1, 1, 1, 1] [2022-03-15 14:43:08,361 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 14:43:08,361 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 14:43:08,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 02:43:08 BasicIcfg [2022-03-15 14:43:08,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 14:43:08,362 INFO L158 Benchmark]: Toolchain (without parser) took 805810.36ms. Allocated memory was 173.0MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 122.4MB in the beginning and 589.3MB in the end (delta: -466.9MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2022-03-15 14:43:08,362 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 173.0MB. Free memory was 138.9MB in the beginning and 138.8MB in the end (delta: 71.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 14:43:08,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.19ms. Allocated memory was 173.0MB in the beginning and 207.6MB in the end (delta: 34.6MB). Free memory was 122.1MB in the beginning and 182.1MB in the end (delta: -59.9MB). Peak memory consumption was 15.4MB. Max. memory is 8.0GB. [2022-03-15 14:43:08,363 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.94ms. Allocated memory is still 207.6MB. Free memory was 182.1MB in the beginning and 180.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 14:43:08,363 INFO L158 Benchmark]: Boogie Preprocessor took 27.84ms. Allocated memory is still 207.6MB. Free memory was 180.0MB in the beginning and 178.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 14:43:08,363 INFO L158 Benchmark]: RCFGBuilder took 439.42ms. Allocated memory is still 207.6MB. Free memory was 178.6MB in the beginning and 160.4MB in the end (delta: 18.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-03-15 14:43:08,363 INFO L158 Benchmark]: TraceAbstraction took 804995.00ms. Allocated memory was 207.6MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 159.7MB in the beginning and 589.3MB in the end (delta: -429.6MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2022-03-15 14:43:08,364 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 173.0MB. Free memory was 138.9MB in the beginning and 138.8MB in the end (delta: 71.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 299.19ms. Allocated memory was 173.0MB in the beginning and 207.6MB in the end (delta: 34.6MB). Free memory was 122.1MB in the beginning and 182.1MB in the end (delta: -59.9MB). Peak memory consumption was 15.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.94ms. Allocated memory is still 207.6MB. Free memory was 182.1MB in the beginning and 180.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.84ms. Allocated memory is still 207.6MB. Free memory was 180.0MB in the beginning and 178.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 439.42ms. Allocated memory is still 207.6MB. Free memory was 178.6MB in the beginning and 160.4MB in the end (delta: 18.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 804995.00ms. Allocated memory was 207.6MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 159.7MB in the beginning and 589.3MB in the end (delta: -429.6MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 173 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 13ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 173 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 13ms.. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 173 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1 for 13ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 804.9s, OverallIterations: 23, TraceHistogramMax: 4, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.6s, AutomataDifference: 164.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46358 SdHoareTripleChecker+Valid, 21.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46358 mSDsluCounter, 121997 SdHoareTripleChecker+Invalid, 18.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 10526 IncrementalHoareTripleChecker+Unchecked, 125017 mSDsCounter, 3082 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39159 IncrementalHoareTripleChecker+Invalid, 52767 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3082 mSolverCounterUnsat, 4976 mSDtfsCounter, 39159 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6396 GetRequests, 4096 SyntacticMatches, 51 SemanticMatches, 2249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182264 ImplicationChecksByTransitivity, 158.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38969occurred in iteration=22, InterpolantAutomatonStates: 1601, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.8s AutomataMinimizationTime, 22 MinimizatonAttempts, 195606 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 462.9s InterpolantComputationTime, 5228 NumberOfCodeBlocks, 5175 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 7485 ConstructedInterpolants, 329 QuantifiedInterpolants, 162140 SizeOfPredicates, 459 NumberOfNonLiveVariables, 5079 ConjunctsInSsa, 877 ConjunctsInUnsatCore, 54 InterpolantComputations, 6 PerfectInterpolantSequences, 869/3144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown