/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/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-15 12:14:17,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 12:14:17,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 12:14:17,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 12:14:17,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 12:14:17,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 12:14:17,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 12:14:17,360 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 [2022-02-15 12:14:17,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 12:14:17,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 12:14:17,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 12:14:17,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 12:14:17,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 12:14:17,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 12:14:17,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 12:14:17,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 12:14:17,395 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 12:14:17,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 12:14:17,396 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 12:14:17,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 12:14:17,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 12:14:17,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 12:14:17,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 12:14:17,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 12:14:17,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 12:14:17,397 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 12:14:17,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 12:14:17,398 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 12:14:17,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 12:14:17,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 12:14:17,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 12:14:17,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 12:14:17,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 12:14:17,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 12:14:17,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 12:14:17,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 12:14:17,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 12:14:17,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 12:14:17,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 12:14:17,400 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 12:14:17,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 12:14:17,400 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 12:14:17,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 12:14:17,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 12:14:17,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 12:14:17,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 12:14:17,673 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 12:14:17,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2022-02-15 12:14:17,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4f12ce1/0c63cb49eaf74d22820833296958fc0d/FLAGbffea12e2 [2022-02-15 12:14:18,212 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 12:14:18,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2022-02-15 12:14:18,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4f12ce1/0c63cb49eaf74d22820833296958fc0d/FLAGbffea12e2 [2022-02-15 12:14:18,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4f12ce1/0c63cb49eaf74d22820833296958fc0d [2022-02-15 12:14:18,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 12:14:18,251 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 12:14:18,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 12:14:18,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 12:14:18,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 12:14:18,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:14:18" (1/1) ... [2022-02-15 12:14:18,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a29840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18, skipping insertion in model container [2022-02-15 12:14:18,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:14:18" (1/1) ... [2022-02-15 12:14:18,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 12:14:18,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 12:14:18,478 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/test-easy1.wvr.c[1876,1889] [2022-02-15 12:14:18,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 12:14:18,496 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 12:14:18,522 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/test-easy1.wvr.c[1876,1889] [2022-02-15 12:14:18,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 12:14:18,538 INFO L208 MainTranslator]: Completed translation [2022-02-15 12:14:18,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18 WrapperNode [2022-02-15 12:14:18,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 12:14:18,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 12:14:18,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 12:14:18,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 12:14:18,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18" (1/1) ... [2022-02-15 12:14:18,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18" (1/1) ... [2022-02-15 12:14:18,582 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-02-15 12:14:18,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 12:14:18,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 12:14:18,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 12:14:18,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 12:14:18,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18" (1/1) ... [2022-02-15 12:14:18,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18" (1/1) ... [2022-02-15 12:14:18,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18" (1/1) ... [2022-02-15 12:14:18,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18" (1/1) ... [2022-02-15 12:14:18,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18" (1/1) ... [2022-02-15 12:14:18,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18" (1/1) ... [2022-02-15 12:14:18,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18" (1/1) ... [2022-02-15 12:14:18,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 12:14:18,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 12:14:18,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 12:14:18,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 12:14:18,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18" (1/1) ... [2022-02-15 12:14:18,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 12:14:18,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:18,665 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) [2022-02-15 12:14:18,687 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 [2022-02-15 12:14:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 12:14:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-15 12:14:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-15 12:14:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-15 12:14:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-15 12:14:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 12:14:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 12:14:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 12:14:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 12:14:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 12:14:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 12:14:18,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 12:14:18,709 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 12:14:18,787 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 12:14:18,789 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 12:14:18,913 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 12:14:18,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 12:14:18,920 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-02-15 12:14:18,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:14:18 BoogieIcfgContainer [2022-02-15 12:14:18,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 12:14:18,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 12:14:18,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 12:14:18,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 12:14:18,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:14:18" (1/3) ... [2022-02-15 12:14:18,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5b8463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:14:18, skipping insertion in model container [2022-02-15 12:14:18,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:14:18" (2/3) ... [2022-02-15 12:14:18,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5b8463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:14:18, skipping insertion in model container [2022-02-15 12:14:18,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:14:18" (3/3) ... [2022-02-15 12:14:18,930 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2022-02-15 12:14:18,935 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 12:14:18,935 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 12:14:18,935 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 12:14:18,935 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 12:14:19,003 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,003 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,004 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,004 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,004 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,004 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,005 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,005 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,005 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,005 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,006 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,006 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,007 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,007 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,007 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,007 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,007 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,008 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,008 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,008 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,011 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,012 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,012 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 12:14:19,024 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-15 12:14:19,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 12:14:19,088 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 [2022-02-15 12:14:19,089 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-15 12:14:19,103 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 84 transitions, 184 flow [2022-02-15 12:14:19,153 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 302 states, 301 states have (on average 2.574750830564784) internal successors, (775), 301 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:19,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 301 states have (on average 2.574750830564784) internal successors, (775), 301 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:19,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 12:14:19,175 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:19,175 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] [2022-02-15 12:14:19,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:19,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:19,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1149725056, now seen corresponding path program 1 times [2022-02-15 12:14:19,198 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:19,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174534056] [2022-02-15 12:14:19,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:19,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:19,440 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:19,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174534056] [2022-02-15 12:14:19,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174534056] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:14:19,441 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:14:19,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-15 12:14:19,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507225279] [2022-02-15 12:14:19,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:14:19,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-15 12:14:19,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:19,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-15 12:14:19,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-15 12:14:19,493 INFO L87 Difference]: Start difference. First operand has 302 states, 301 states have (on average 2.574750830564784) internal successors, (775), 301 states have internal predecessors, (775), 0 states have call successors, (0), 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 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:19,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:19,550 INFO L93 Difference]: Finished difference Result 302 states and 708 transitions. [2022-02-15 12:14:19,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-15 12:14:19,554 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-02-15 12:14:19,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:19,563 INFO L225 Difference]: With dead ends: 302 [2022-02-15 12:14:19,564 INFO L226 Difference]: Without dead ends: 300 [2022-02-15 12:14:19,565 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 [2022-02-15 12:14:19,568 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:19,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 12:14:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-02-15 12:14:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2022-02-15 12:14:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 2.3612040133779266) internal successors, (706), 299 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:19,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 706 transitions. [2022-02-15 12:14:19,629 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 706 transitions. Word has length 59 [2022-02-15 12:14:19,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:19,630 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 706 transitions. [2022-02-15 12:14:19,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:19,631 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 706 transitions. [2022-02-15 12:14:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-02-15 12:14:19,634 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:19,634 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] [2022-02-15 12:14:19,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 12:14:19,635 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:19,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1697195594, now seen corresponding path program 1 times [2022-02-15 12:14:19,636 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:19,636 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878395082] [2022-02-15 12:14:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:19,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:19,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:19,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878395082] [2022-02-15 12:14:19,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878395082] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:14:19,923 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:14:19,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-15 12:14:19,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867294927] [2022-02-15 12:14:19,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:14:19,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-15 12:14:19,925 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-15 12:14:19,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-02-15 12:14:19,928 INFO L87 Difference]: Start difference. First operand 300 states and 706 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:20,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:20,081 INFO L93 Difference]: Finished difference Result 504 states and 1216 transitions. [2022-02-15 12:14:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 12:14:20,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-02-15 12:14:20,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:20,092 INFO L225 Difference]: With dead ends: 504 [2022-02-15 12:14:20,092 INFO L226 Difference]: Without dead ends: 453 [2022-02-15 12:14:20,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-02-15 12:14:20,099 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 63 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:20,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 278 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:14:20,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-02-15 12:14:20,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 355. [2022-02-15 12:14:20,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 2.364406779661017) internal successors, (837), 354 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 837 transitions. [2022-02-15 12:14:20,139 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 837 transitions. Word has length 59 [2022-02-15 12:14:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:20,143 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 837 transitions. [2022-02-15 12:14:20,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:20,144 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 837 transitions. [2022-02-15 12:14:20,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 12:14:20,153 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:20,153 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] [2022-02-15 12:14:20,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 12:14:20,154 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:20,156 INFO L85 PathProgramCache]: Analyzing trace with hash -395182923, now seen corresponding path program 1 times [2022-02-15 12:14:20,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:20,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162019048] [2022-02-15 12:14:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:20,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:20,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:20,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162019048] [2022-02-15 12:14:20,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162019048] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:14:20,260 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:14:20,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 12:14:20,260 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632468182] [2022-02-15 12:14:20,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:14:20,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 12:14:20,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 12:14:20,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 12:14:20,262 INFO L87 Difference]: Start difference. First operand 355 states and 837 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:20,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:20,372 INFO L93 Difference]: Finished difference Result 586 states and 1395 transitions. [2022-02-15 12:14:20,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 12:14:20,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-02-15 12:14:20,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:20,376 INFO L225 Difference]: With dead ends: 586 [2022-02-15 12:14:20,377 INFO L226 Difference]: Without dead ends: 586 [2022-02-15 12:14:20,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-15 12:14:20,378 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 88 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:20,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 247 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:14:20,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-02-15 12:14:20,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 353. [2022-02-15 12:14:20,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 2.428977272727273) internal successors, (855), 352 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 855 transitions. [2022-02-15 12:14:20,394 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 855 transitions. Word has length 63 [2022-02-15 12:14:20,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:20,395 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 855 transitions. [2022-02-15 12:14:20,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:20,395 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 855 transitions. [2022-02-15 12:14:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 12:14:20,396 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:20,397 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] [2022-02-15 12:14:20,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 12:14:20,397 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:20,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash -459418951, now seen corresponding path program 2 times [2022-02-15 12:14:20,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:20,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217014498] [2022-02-15 12:14:20,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:20,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:20,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:20,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217014498] [2022-02-15 12:14:20,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217014498] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:14:20,481 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:14:20,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 12:14:20,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964671009] [2022-02-15 12:14:20,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:14:20,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 12:14:20,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:20,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 12:14:20,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 12:14:20,483 INFO L87 Difference]: Start difference. First operand 353 states and 855 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:20,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:20,575 INFO L93 Difference]: Finished difference Result 460 states and 1098 transitions. [2022-02-15 12:14:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 12:14:20,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-02-15 12:14:20,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:20,578 INFO L225 Difference]: With dead ends: 460 [2022-02-15 12:14:20,579 INFO L226 Difference]: Without dead ends: 448 [2022-02-15 12:14:20,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-15 12:14:20,580 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 90 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:20,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 261 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:14:20,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-02-15 12:14:20,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 331. [2022-02-15 12:14:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 2.390909090909091) internal successors, (789), 330 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:20,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 789 transitions. [2022-02-15 12:14:20,593 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 789 transitions. Word has length 63 [2022-02-15 12:14:20,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:20,593 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 789 transitions. [2022-02-15 12:14:20,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:20,593 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 789 transitions. [2022-02-15 12:14:20,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 12:14:20,595 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:20,595 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] [2022-02-15 12:14:20,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 12:14:20,595 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:20,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:20,596 INFO L85 PathProgramCache]: Analyzing trace with hash -88921197, now seen corresponding path program 1 times [2022-02-15 12:14:20,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:20,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830676045] [2022-02-15 12:14:20,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:20,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:20,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:20,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830676045] [2022-02-15 12:14:20,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830676045] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:20,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121523751] [2022-02-15 12:14:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:20,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:20,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:20,727 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) [2022-02-15 12:14:20,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-15 12:14:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:20,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-15 12:14:20,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:21,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:21,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:21,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121523751] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:21,400 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-15 12:14:21,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2022-02-15 12:14:21,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58360552] [2022-02-15 12:14:21,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:14:21,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 12:14:21,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:21,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 12:14:21,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-02-15 12:14:21,402 INFO L87 Difference]: Start difference. First operand 331 states and 789 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:21,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:21,466 INFO L93 Difference]: Finished difference Result 594 states and 1387 transitions. [2022-02-15 12:14:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 12:14:21,466 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-02-15 12:14:21,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:21,469 INFO L225 Difference]: With dead ends: 594 [2022-02-15 12:14:21,470 INFO L226 Difference]: Without dead ends: 594 [2022-02-15 12:14:21,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-02-15 12:14:21,471 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 101 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:21,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 199 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 12:14:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-02-15 12:14:21,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 369. [2022-02-15 12:14:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.442934782608696) internal successors, (899), 368 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:21,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 899 transitions. [2022-02-15 12:14:21,483 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 899 transitions. Word has length 63 [2022-02-15 12:14:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:21,484 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 899 transitions. [2022-02-15 12:14:21,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:21,484 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 899 transitions. [2022-02-15 12:14:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-02-15 12:14:21,485 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:21,486 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] [2022-02-15 12:14:21,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:21,699 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 [2022-02-15 12:14:21,700 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1789564179, now seen corresponding path program 2 times [2022-02-15 12:14:21,701 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:21,701 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204613401] [2022-02-15 12:14:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:21,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:21,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:21,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204613401] [2022-02-15 12:14:21,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204613401] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:14:21,778 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:14:21,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 12:14:21,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410092776] [2022-02-15 12:14:21,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:14:21,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 12:14:21,779 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:21,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 12:14:21,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-15 12:14:21,780 INFO L87 Difference]: Start difference. First operand 369 states and 899 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:21,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:21,856 INFO L93 Difference]: Finished difference Result 470 states and 1119 transitions. [2022-02-15 12:14:21,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 12:14:21,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-02-15 12:14:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:21,860 INFO L225 Difference]: With dead ends: 470 [2022-02-15 12:14:21,861 INFO L226 Difference]: Without dead ends: 437 [2022-02-15 12:14:21,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-02-15 12:14:21,864 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 83 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:21,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 209 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:14:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-02-15 12:14:21,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 369. [2022-02-15 12:14:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.4157608695652173) internal successors, (889), 368 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 889 transitions. [2022-02-15 12:14:21,879 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 889 transitions. Word has length 63 [2022-02-15 12:14:21,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:21,880 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 889 transitions. [2022-02-15 12:14:21,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:21,881 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 889 transitions. [2022-02-15 12:14:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 12:14:21,882 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:21,883 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] [2022-02-15 12:14:21,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 12:14:21,883 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:21,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:21,884 INFO L85 PathProgramCache]: Analyzing trace with hash -269043950, now seen corresponding path program 1 times [2022-02-15 12:14:21,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:21,885 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389438882] [2022-02-15 12:14:21,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:21,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:22,065 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:22,065 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389438882] [2022-02-15 12:14:22,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389438882] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:22,067 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408428848] [2022-02-15 12:14:22,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:22,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:22,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:22,072 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) [2022-02-15 12:14:22,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-15 12:14:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:22,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 12:14:22,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:22,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:14:22,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408428848] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:22,834 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:22,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-02-15 12:14:22,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284747046] [2022-02-15 12:14:22,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:22,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 12:14:22,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:22,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 12:14:22,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2022-02-15 12:14:22,836 INFO L87 Difference]: Start difference. First operand 369 states and 889 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:24,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:24,622 INFO L93 Difference]: Finished difference Result 1418 states and 3453 transitions. [2022-02-15 12:14:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 12:14:24,623 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 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 67 [2022-02-15 12:14:24,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:24,630 INFO L225 Difference]: With dead ends: 1418 [2022-02-15 12:14:24,631 INFO L226 Difference]: Without dead ends: 1367 [2022-02-15 12:14:24,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1459 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1023, Invalid=4677, Unknown=0, NotChecked=0, Total=5700 [2022-02-15 12:14:24,634 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 845 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:24,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 2209 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:14:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2022-02-15 12:14:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 654. [2022-02-15 12:14:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 2.5068912710566615) internal successors, (1637), 653 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1637 transitions. [2022-02-15 12:14:24,663 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1637 transitions. Word has length 67 [2022-02-15 12:14:24,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:24,664 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 1637 transitions. [2022-02-15 12:14:24,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:24,664 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1637 transitions. [2022-02-15 12:14:24,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 12:14:24,666 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:24,666 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] [2022-02-15 12:14:24,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:24,891 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 [2022-02-15 12:14:24,892 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:24,893 INFO L85 PathProgramCache]: Analyzing trace with hash 671283466, now seen corresponding path program 2 times [2022-02-15 12:14:24,893 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:24,893 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118370440] [2022-02-15 12:14:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:24,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:25,048 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:25,048 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118370440] [2022-02-15 12:14:25,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118370440] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:25,049 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564321760] [2022-02-15 12:14:25,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:14:25,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:25,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:25,051 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) [2022-02-15 12:14:25,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-15 12:14:25,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:14:25,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:25,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 12:14:25,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:25,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:14:25,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564321760] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:25,745 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:25,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-02-15 12:14:25,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104768770] [2022-02-15 12:14:25,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:25,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 12:14:25,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:25,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 12:14:25,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-02-15 12:14:25,748 INFO L87 Difference]: Start difference. First operand 654 states and 1637 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:27,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:27,630 INFO L93 Difference]: Finished difference Result 2313 states and 5964 transitions. [2022-02-15 12:14:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 12:14:27,630 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 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 67 [2022-02-15 12:14:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:27,643 INFO L225 Difference]: With dead ends: 2313 [2022-02-15 12:14:27,644 INFO L226 Difference]: Without dead ends: 2262 [2022-02-15 12:14:27,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1461 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1036, Invalid=4816, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 12:14:27,646 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 704 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:27,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 2115 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:14:27,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-02-15 12:14:27,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1030. [2022-02-15 12:14:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 2.7084548104956268) internal successors, (2787), 1029 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 2787 transitions. [2022-02-15 12:14:27,690 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 2787 transitions. Word has length 67 [2022-02-15 12:14:27,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:27,691 INFO L470 AbstractCegarLoop]: Abstraction has 1030 states and 2787 transitions. [2022-02-15 12:14:27,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:27,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 2787 transitions. [2022-02-15 12:14:27,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 12:14:27,694 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:27,694 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] [2022-02-15 12:14:27,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:27,899 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 [2022-02-15 12:14:27,900 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:27,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:27,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1299249746, now seen corresponding path program 3 times [2022-02-15 12:14:27,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:27,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528746642] [2022-02-15 12:14:27,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:27,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:28,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:28,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528746642] [2022-02-15 12:14:28,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528746642] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:14:28,088 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:14:28,088 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 12:14:28,088 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646239721] [2022-02-15 12:14:28,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:14:28,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 12:14:28,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:28,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 12:14:28,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-02-15 12:14:28,090 INFO L87 Difference]: Start difference. First operand 1030 states and 2787 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:28,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:28,367 INFO L93 Difference]: Finished difference Result 1297 states and 3485 transitions. [2022-02-15 12:14:28,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-15 12:14:28,367 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-02-15 12:14:28,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:28,374 INFO L225 Difference]: With dead ends: 1297 [2022-02-15 12:14:28,374 INFO L226 Difference]: Without dead ends: 1246 [2022-02-15 12:14:28,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2022-02-15 12:14:28,375 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 116 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:28,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 885 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:14:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-02-15 12:14:28,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1070. [2022-02-15 12:14:28,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1069 states have (on average 2.7100093545369504) internal successors, (2897), 1069 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 2897 transitions. [2022-02-15 12:14:28,408 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 2897 transitions. Word has length 67 [2022-02-15 12:14:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:28,408 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 2897 transitions. [2022-02-15 12:14:28,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:28,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 2897 transitions. [2022-02-15 12:14:28,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 12:14:28,412 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:28,412 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] [2022-02-15 12:14:28,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 12:14:28,412 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:28,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:28,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1756265754, now seen corresponding path program 4 times [2022-02-15 12:14:28,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:28,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425694296] [2022-02-15 12:14:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:28,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:28,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:28,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425694296] [2022-02-15 12:14:28,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425694296] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:28,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115713851] [2022-02-15 12:14:28,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:14:28,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:28,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:28,534 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) [2022-02-15 12:14:28,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-15 12:14:28,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:14:28,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:28,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 12:14:28,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:28,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:14:29,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115713851] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:29,272 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:29,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-02-15 12:14:29,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838356622] [2022-02-15 12:14:29,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:29,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 12:14:29,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:29,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 12:14:29,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-02-15 12:14:29,275 INFO L87 Difference]: Start difference. First operand 1070 states and 2897 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:30,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:30,502 INFO L93 Difference]: Finished difference Result 2257 states and 6087 transitions. [2022-02-15 12:14:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 12:14:30,502 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 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 67 [2022-02-15 12:14:30,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:30,515 INFO L225 Difference]: With dead ends: 2257 [2022-02-15 12:14:30,515 INFO L226 Difference]: Without dead ends: 2206 [2022-02-15 12:14:30,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=529, Invalid=2777, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 12:14:30,517 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 384 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2167 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:30,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 2167 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:14:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-02-15 12:14:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1294. [2022-02-15 12:14:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 2.7633410672853826) internal successors, (3573), 1293 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 3573 transitions. [2022-02-15 12:14:30,572 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 3573 transitions. Word has length 67 [2022-02-15 12:14:30,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:30,572 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 3573 transitions. [2022-02-15 12:14:30,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:30,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 3573 transitions. [2022-02-15 12:14:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 12:14:30,577 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:30,577 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] [2022-02-15 12:14:30,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:30,791 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 [2022-02-15 12:14:30,791 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:30,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:30,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1118977604, now seen corresponding path program 5 times [2022-02-15 12:14:30,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:30,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002460473] [2022-02-15 12:14:30,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:30,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:30,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:30,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002460473] [2022-02-15 12:14:30,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002460473] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:30,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657648457] [2022-02-15 12:14:30,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:14:30,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:30,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:30,952 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) [2022-02-15 12:14:30,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-15 12:14:31,010 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:14:31,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:31,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 12:14:31,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:31,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:14:31,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657648457] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:31,720 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:31,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-02-15 12:14:31,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669833003] [2022-02-15 12:14:31,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:31,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 12:14:31,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:31,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 12:14:31,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-02-15 12:14:31,724 INFO L87 Difference]: Start difference. First operand 1294 states and 3573 transitions. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:32,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:32,701 INFO L93 Difference]: Finished difference Result 2405 states and 6522 transitions. [2022-02-15 12:14:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 12:14:32,702 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 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 67 [2022-02-15 12:14:32,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:32,714 INFO L225 Difference]: With dead ends: 2405 [2022-02-15 12:14:32,714 INFO L226 Difference]: Without dead ends: 2354 [2022-02-15 12:14:32,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=458, Invalid=2298, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 12:14:32,716 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 427 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:32,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 2123 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:14:32,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2022-02-15 12:14:32,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1598. [2022-02-15 12:14:32,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1597 states have (on average 2.8058860363180966) internal successors, (4481), 1597 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 4481 transitions. [2022-02-15 12:14:32,777 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 4481 transitions. Word has length 67 [2022-02-15 12:14:32,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:32,778 INFO L470 AbstractCegarLoop]: Abstraction has 1598 states and 4481 transitions. [2022-02-15 12:14:32,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:32,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 4481 transitions. [2022-02-15 12:14:32,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 12:14:32,783 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:32,783 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] [2022-02-15 12:14:32,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:33,011 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 [2022-02-15 12:14:33,012 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:33,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:33,013 INFO L85 PathProgramCache]: Analyzing trace with hash 611084842, now seen corresponding path program 6 times [2022-02-15 12:14:33,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:33,013 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599683986] [2022-02-15 12:14:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:33,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:33,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:33,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599683986] [2022-02-15 12:14:33,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599683986] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:33,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626940626] [2022-02-15 12:14:33,170 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:14:33,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:33,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:33,172 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) [2022-02-15 12:14:33,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-15 12:14:33,239 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:14:33,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:33,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 12:14:33,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:33,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:14:33,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626940626] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:33,959 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:33,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-02-15 12:14:33,960 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066697319] [2022-02-15 12:14:33,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:33,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 12:14:33,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:33,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 12:14:33,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-02-15 12:14:33,961 INFO L87 Difference]: Start difference. First operand 1598 states and 4481 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:35,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:35,595 INFO L93 Difference]: Finished difference Result 3131 states and 8611 transitions. [2022-02-15 12:14:35,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 12:14:35,595 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 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 67 [2022-02-15 12:14:35,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:35,611 INFO L225 Difference]: With dead ends: 3131 [2022-02-15 12:14:35,611 INFO L226 Difference]: Without dead ends: 3080 [2022-02-15 12:14:35,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=908, Invalid=4348, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 12:14:35,613 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 453 mSDsluCounter, 2242 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:35,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 2243 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 12:14:35,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2022-02-15 12:14:35,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 1882. [2022-02-15 12:14:35,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 2.8399787347155767) internal successors, (5342), 1881 states have internal predecessors, (5342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 5342 transitions. [2022-02-15 12:14:35,680 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 5342 transitions. Word has length 67 [2022-02-15 12:14:35,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:35,680 INFO L470 AbstractCegarLoop]: Abstraction has 1882 states and 5342 transitions. [2022-02-15 12:14:35,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:35,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 5342 transitions. [2022-02-15 12:14:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 12:14:35,686 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:35,686 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] [2022-02-15 12:14:35,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:35,903 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 [2022-02-15 12:14:35,904 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:35,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:35,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1612226274, now seen corresponding path program 7 times [2022-02-15 12:14:35,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:35,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761376621] [2022-02-15 12:14:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:35,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:36,044 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:36,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761376621] [2022-02-15 12:14:36,045 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761376621] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:14:36,045 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:14:36,045 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 12:14:36,045 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987359247] [2022-02-15 12:14:36,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:14:36,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 12:14:36,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:36,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 12:14:36,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-15 12:14:36,046 INFO L87 Difference]: Start difference. First operand 1882 states and 5342 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:36,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:36,229 INFO L93 Difference]: Finished difference Result 2241 states and 6313 transitions. [2022-02-15 12:14:36,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 12:14:36,229 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-02-15 12:14:36,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:36,240 INFO L225 Difference]: With dead ends: 2241 [2022-02-15 12:14:36,240 INFO L226 Difference]: Without dead ends: 2190 [2022-02-15 12:14:36,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-02-15 12:14:36,241 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 105 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:36,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 646 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:14:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2022-02-15 12:14:36,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1942. [2022-02-15 12:14:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 2.8433797011849564) internal successors, (5519), 1941 states have internal predecessors, (5519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 5519 transitions. [2022-02-15 12:14:36,298 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 5519 transitions. Word has length 67 [2022-02-15 12:14:36,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:36,298 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 5519 transitions. [2022-02-15 12:14:36,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:36,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 5519 transitions. [2022-02-15 12:14:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 12:14:36,304 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:36,304 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] [2022-02-15 12:14:36,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 12:14:36,304 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:36,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:36,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1734679074, now seen corresponding path program 8 times [2022-02-15 12:14:36,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:36,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274658966] [2022-02-15 12:14:36,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:36,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:36,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:36,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274658966] [2022-02-15 12:14:36,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274658966] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:36,440 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381889260] [2022-02-15 12:14:36,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:14:36,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:36,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:36,442 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) [2022-02-15 12:14:36,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-15 12:14:36,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:14:36,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:36,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-15 12:14:36,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:36,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:37,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381889260] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:37,163 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:37,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2022-02-15 12:14:37,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778013559] [2022-02-15 12:14:37,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:37,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 12:14:37,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:37,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 12:14:37,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-02-15 12:14:37,164 INFO L87 Difference]: Start difference. First operand 1942 states and 5519 transitions. Second operand has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:37,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:37,422 INFO L93 Difference]: Finished difference Result 2313 states and 6511 transitions. [2022-02-15 12:14:37,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 12:14:37,422 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-02-15 12:14:37,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:37,430 INFO L225 Difference]: With dead ends: 2313 [2022-02-15 12:14:37,430 INFO L226 Difference]: Without dead ends: 2166 [2022-02-15 12:14:37,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2022-02-15 12:14:37,431 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 171 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:37,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 904 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:14:37,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2022-02-15 12:14:37,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 1946. [2022-02-15 12:14:37,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1945 states have (on average 2.837017994858612) internal successors, (5518), 1945 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 5518 transitions. [2022-02-15 12:14:37,483 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 5518 transitions. Word has length 67 [2022-02-15 12:14:37,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:37,483 INFO L470 AbstractCegarLoop]: Abstraction has 1946 states and 5518 transitions. [2022-02-15 12:14:37,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 5518 transitions. [2022-02-15 12:14:37,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 12:14:37,489 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:37,489 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] [2022-02-15 12:14:37,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:37,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:37,708 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:37,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1013282806, now seen corresponding path program 9 times [2022-02-15 12:14:37,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:37,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882850183] [2022-02-15 12:14:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:37,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:37,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:37,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882850183] [2022-02-15 12:14:37,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882850183] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:37,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604079258] [2022-02-15 12:14:37,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:14:37,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:37,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:37,855 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) [2022-02-15 12:14:37,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-15 12:14:37,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:14:37,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:37,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-15 12:14:37,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:38,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:38,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604079258] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:38,463 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:38,463 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2022-02-15 12:14:38,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027280554] [2022-02-15 12:14:38,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:38,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 12:14:38,464 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 12:14:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-02-15 12:14:38,465 INFO L87 Difference]: Start difference. First operand 1946 states and 5518 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:38,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:38,758 INFO L93 Difference]: Finished difference Result 2237 states and 6294 transitions. [2022-02-15 12:14:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-15 12:14:38,759 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 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 67 [2022-02-15 12:14:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:38,764 INFO L225 Difference]: With dead ends: 2237 [2022-02-15 12:14:38,764 INFO L226 Difference]: Without dead ends: 2138 [2022-02-15 12:14:38,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:14:38,765 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 201 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:38,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 1179 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:14:38,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2022-02-15 12:14:38,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1914. [2022-02-15 12:14:38,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 2.8384736016727654) internal successors, (5430), 1913 states have internal predecessors, (5430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 5430 transitions. [2022-02-15 12:14:38,831 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 5430 transitions. Word has length 67 [2022-02-15 12:14:38,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:38,831 INFO L470 AbstractCegarLoop]: Abstraction has 1914 states and 5430 transitions. [2022-02-15 12:14:38,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:38,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 5430 transitions. [2022-02-15 12:14:38,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-02-15 12:14:38,837 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:38,837 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] [2022-02-15 12:14:38,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:39,051 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,SelfDestructingSolverStorable14 [2022-02-15 12:14:39,052 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:39,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:39,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1563913122, now seen corresponding path program 10 times [2022-02-15 12:14:39,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:39,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641252798] [2022-02-15 12:14:39,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:39,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:39,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:39,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641252798] [2022-02-15 12:14:39,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641252798] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:39,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115086199] [2022-02-15 12:14:39,161 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:14:39,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:39,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:39,163 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) [2022-02-15 12:14:39,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-15 12:14:39,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:14:39,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:39,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-15 12:14:39,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:39,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:39,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115086199] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:39,830 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:39,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2022-02-15 12:14:39,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526664537] [2022-02-15 12:14:39,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:39,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-15 12:14:39,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:39,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-15 12:14:39,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-02-15 12:14:39,831 INFO L87 Difference]: Start difference. First operand 1914 states and 5430 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:41,020 INFO L93 Difference]: Finished difference Result 3324 states and 9105 transitions. [2022-02-15 12:14:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 12:14:41,021 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 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 67 [2022-02-15 12:14:41,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:41,031 INFO L225 Difference]: With dead ends: 3324 [2022-02-15 12:14:41,031 INFO L226 Difference]: Without dead ends: 3273 [2022-02-15 12:14:41,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=647, Invalid=3013, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 12:14:41,033 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 679 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:41,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 2317 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:14:41,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2022-02-15 12:14:41,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2282. [2022-02-15 12:14:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 2281 states have (on average 2.8540113985094258) internal successors, (6510), 2281 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 6510 transitions. [2022-02-15 12:14:41,118 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 6510 transitions. Word has length 67 [2022-02-15 12:14:41,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:41,118 INFO L470 AbstractCegarLoop]: Abstraction has 2282 states and 6510 transitions. [2022-02-15 12:14:41,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:41,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 6510 transitions. [2022-02-15 12:14:41,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:14:41,125 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:41,125 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:14:41,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-02-15 12:14:41,347 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,SelfDestructingSolverStorable15 [2022-02-15 12:14:41,348 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:41,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1912541999, now seen corresponding path program 11 times [2022-02-15 12:14:41,348 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:41,348 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560226965] [2022-02-15 12:14:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:41,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:14:41,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:41,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560226965] [2022-02-15 12:14:41,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560226965] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:41,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033568458] [2022-02-15 12:14:41,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:14:41,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:41,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:41,471 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) [2022-02-15 12:14:41,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-15 12:14:41,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:14:41,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:41,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:14:41,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:41,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:42,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:42,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033568458] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:42,068 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:42,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2022-02-15 12:14:42,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059099624] [2022-02-15 12:14:42,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:42,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-15 12:14:42,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:42,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-15 12:14:42,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-02-15 12:14:42,071 INFO L87 Difference]: Start difference. First operand 2282 states and 6510 transitions. Second operand has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:43,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:43,484 INFO L93 Difference]: Finished difference Result 3202 states and 8885 transitions. [2022-02-15 12:14:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 12:14:43,492 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 0 states have call successors, (0), 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 71 [2022-02-15 12:14:43,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:43,503 INFO L225 Difference]: With dead ends: 3202 [2022-02-15 12:14:43,503 INFO L226 Difference]: Without dead ends: 3151 [2022-02-15 12:14:43,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1099, Invalid=4601, Unknown=0, NotChecked=0, Total=5700 [2022-02-15 12:14:43,506 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 825 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:43,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [825 Valid, 1916 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 12:14:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2022-02-15 12:14:43,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 1586. [2022-02-15 12:14:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1586 states, 1585 states have (on average 2.783596214511041) internal successors, (4412), 1585 states have internal predecessors, (4412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 4412 transitions. [2022-02-15 12:14:43,565 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 4412 transitions. Word has length 71 [2022-02-15 12:14:43,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:43,565 INFO L470 AbstractCegarLoop]: Abstraction has 1586 states and 4412 transitions. [2022-02-15 12:14:43,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.461538461538462) internal successors, (142), 26 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:43,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 4412 transitions. [2022-02-15 12:14:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:14:43,570 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:43,570 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:14:43,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:43,787 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,SelfDestructingSolverStorable16 [2022-02-15 12:14:43,787 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash -273163413, now seen corresponding path program 12 times [2022-02-15 12:14:43,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:43,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746303718] [2022-02-15 12:14:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:43,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:43,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:43,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746303718] [2022-02-15 12:14:43,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746303718] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:43,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488777333] [2022-02-15 12:14:43,887 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:14:43,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:43,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:43,889 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) [2022-02-15 12:14:43,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-15 12:14:43,951 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:14:43,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:43,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:14:43,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:44,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:44,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488777333] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:44,484 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:44,484 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-15 12:14:44,484 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802352137] [2022-02-15 12:14:44,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:44,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 12:14:44,484 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:44,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 12:14:44,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-02-15 12:14:44,485 INFO L87 Difference]: Start difference. First operand 1586 states and 4412 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 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) [2022-02-15 12:14:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:45,319 INFO L93 Difference]: Finished difference Result 3448 states and 9263 transitions. [2022-02-15 12:14:45,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 12:14:45,320 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 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 71 [2022-02-15 12:14:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:45,330 INFO L225 Difference]: With dead ends: 3448 [2022-02-15 12:14:45,331 INFO L226 Difference]: Without dead ends: 3448 [2022-02-15 12:14:45,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=869, Invalid=3421, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 12:14:45,333 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 752 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:45,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 1015 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:14:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2022-02-15 12:14:45,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 1814. [2022-02-15 12:14:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1814 states, 1813 states have (on average 2.8168781025923884) internal successors, (5107), 1813 states have internal predecessors, (5107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 5107 transitions. [2022-02-15 12:14:45,394 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 5107 transitions. Word has length 71 [2022-02-15 12:14:45,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:45,395 INFO L470 AbstractCegarLoop]: Abstraction has 1814 states and 5107 transitions. [2022-02-15 12:14:45,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 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) [2022-02-15 12:14:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 5107 transitions. [2022-02-15 12:14:45,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:14:45,399 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:45,399 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:14:45,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:45,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-15 12:14:45,619 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1047027179, now seen corresponding path program 13 times [2022-02-15 12:14:45,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:45,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554844402] [2022-02-15 12:14:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:45,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:45,718 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:45,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554844402] [2022-02-15 12:14:45,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554844402] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:45,718 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563071791] [2022-02-15 12:14:45,718 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:14:45,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:45,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:45,720 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) [2022-02-15 12:14:45,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-15 12:14:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:45,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-15 12:14:45,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:46,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:46,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563071791] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:46,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:46,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-15 12:14:46,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800630886] [2022-02-15 12:14:46,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:46,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 12:14:46,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:46,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 12:14:46,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-02-15 12:14:46,303 INFO L87 Difference]: Start difference. First operand 1814 states and 5107 transitions. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:46,930 INFO L93 Difference]: Finished difference Result 3154 states and 8570 transitions. [2022-02-15 12:14:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 12:14:46,931 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 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 71 [2022-02-15 12:14:46,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:46,941 INFO L225 Difference]: With dead ends: 3154 [2022-02-15 12:14:46,942 INFO L226 Difference]: Without dead ends: 3106 [2022-02-15 12:14:46,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=581, Invalid=2175, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 12:14:46,943 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 797 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:46,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 941 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:14:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2022-02-15 12:14:46,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 1994. [2022-02-15 12:14:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 2.826894129453086) internal successors, (5634), 1993 states have internal predecessors, (5634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:47,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 5634 transitions. [2022-02-15 12:14:47,005 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 5634 transitions. Word has length 71 [2022-02-15 12:14:47,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:47,005 INFO L470 AbstractCegarLoop]: Abstraction has 1994 states and 5634 transitions. [2022-02-15 12:14:47,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:47,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 5634 transitions. [2022-02-15 12:14:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:14:47,011 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:47,011 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:14:47,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:47,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:47,225 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:47,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:47,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1201955951, now seen corresponding path program 14 times [2022-02-15 12:14:47,226 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:47,226 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010516266] [2022-02-15 12:14:47,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:47,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:47,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:47,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010516266] [2022-02-15 12:14:47,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010516266] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:47,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975725564] [2022-02-15 12:14:47,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:14:47,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:47,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:47,331 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) [2022-02-15 12:14:47,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-15 12:14:47,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:14:47,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:47,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:14:47,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:47,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:47,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975725564] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:47,891 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:47,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-15 12:14:47,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677264720] [2022-02-15 12:14:47,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:47,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 12:14:47,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:47,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 12:14:47,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-02-15 12:14:47,893 INFO L87 Difference]: Start difference. First operand 1994 states and 5634 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:48,647 INFO L93 Difference]: Finished difference Result 3619 states and 10017 transitions. [2022-02-15 12:14:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 12:14:48,647 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 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 71 [2022-02-15 12:14:48,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:48,658 INFO L225 Difference]: With dead ends: 3619 [2022-02-15 12:14:48,658 INFO L226 Difference]: Without dead ends: 3589 [2022-02-15 12:14:48,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=645, Invalid=2217, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 12:14:48,661 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 733 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:48,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 1017 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:14:48,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2022-02-15 12:14:48,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 2414. [2022-02-15 12:14:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2413 states have (on average 2.8632407791131373) internal successors, (6909), 2413 states have internal predecessors, (6909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 6909 transitions. [2022-02-15 12:14:48,745 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 6909 transitions. Word has length 71 [2022-02-15 12:14:48,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:48,747 INFO L470 AbstractCegarLoop]: Abstraction has 2414 states and 6909 transitions. [2022-02-15 12:14:48,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:48,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 6909 transitions. [2022-02-15 12:14:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:14:48,754 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:48,755 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:14:48,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:48,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-02-15 12:14:48,980 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:48,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash 952809681, now seen corresponding path program 15 times [2022-02-15 12:14:48,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:48,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465806844] [2022-02-15 12:14:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:48,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:49,077 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:49,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465806844] [2022-02-15 12:14:49,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465806844] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:49,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942398194] [2022-02-15 12:14:49,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:14:49,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:49,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:49,079 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) [2022-02-15 12:14:49,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-15 12:14:49,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:14:49,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:49,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:14:49,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:49,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:49,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942398194] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:49,612 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:49,612 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-15 12:14:49,612 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916504273] [2022-02-15 12:14:49,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:49,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 12:14:49,612 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:49,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 12:14:49,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-02-15 12:14:49,613 INFO L87 Difference]: Start difference. First operand 2414 states and 6909 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:50,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:50,416 INFO L93 Difference]: Finished difference Result 4209 states and 11676 transitions. [2022-02-15 12:14:50,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 12:14:50,417 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 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 71 [2022-02-15 12:14:50,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:50,429 INFO L225 Difference]: With dead ends: 4209 [2022-02-15 12:14:50,429 INFO L226 Difference]: Without dead ends: 4119 [2022-02-15 12:14:50,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=641, Invalid=2221, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 12:14:50,433 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 764 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:50,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 876 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:14:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2022-02-15 12:14:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 2619. [2022-02-15 12:14:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2618 states have (on average 2.865546218487395) internal successors, (7502), 2618 states have internal predecessors, (7502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 7502 transitions. [2022-02-15 12:14:50,509 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 7502 transitions. Word has length 71 [2022-02-15 12:14:50,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:50,509 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 7502 transitions. [2022-02-15 12:14:50,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:50,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 7502 transitions. [2022-02-15 12:14:50,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:14:50,516 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:50,516 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:14:50,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:50,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:50,737 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:50,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:50,737 INFO L85 PathProgramCache]: Analyzing trace with hash 305680217, now seen corresponding path program 16 times [2022-02-15 12:14:50,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:50,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842812733] [2022-02-15 12:14:50,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:50,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:50,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:50,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842812733] [2022-02-15 12:14:50,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842812733] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:50,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168518248] [2022-02-15 12:14:50,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:14:50,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:50,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:50,818 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) [2022-02-15 12:14:50,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-15 12:14:50,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:14:50,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:50,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:14:50,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:51,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:51,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168518248] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:51,331 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:51,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-02-15 12:14:51,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676143312] [2022-02-15 12:14:51,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:51,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 12:14:51,331 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:51,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 12:14:51,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-02-15 12:14:51,332 INFO L87 Difference]: Start difference. First operand 2619 states and 7502 transitions. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:51,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:51,617 INFO L93 Difference]: Finished difference Result 3109 states and 8797 transitions. [2022-02-15 12:14:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-15 12:14:51,619 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 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 71 [2022-02-15 12:14:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:51,626 INFO L225 Difference]: With dead ends: 3109 [2022-02-15 12:14:51,626 INFO L226 Difference]: Without dead ends: 3016 [2022-02-15 12:14:51,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-02-15 12:14:51,627 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 265 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:51,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 834 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:14:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2022-02-15 12:14:51,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 2619. [2022-02-15 12:14:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2618 states have (on average 2.8601986249045073) internal successors, (7488), 2618 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 7488 transitions. [2022-02-15 12:14:51,696 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 7488 transitions. Word has length 71 [2022-02-15 12:14:51,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:51,697 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 7488 transitions. [2022-02-15 12:14:51,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:51,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 7488 transitions. [2022-02-15 12:14:51,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:14:51,703 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:51,703 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:14:51,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:51,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:51,912 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:51,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:51,912 INFO L85 PathProgramCache]: Analyzing trace with hash 443611529, now seen corresponding path program 17 times [2022-02-15 12:14:51,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:51,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858399908] [2022-02-15 12:14:51,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:51,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:52,012 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:52,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858399908] [2022-02-15 12:14:52,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858399908] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:52,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174872523] [2022-02-15 12:14:52,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:14:52,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:52,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:52,014 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) [2022-02-15 12:14:52,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-15 12:14:52,078 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:14:52,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:52,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:14:52,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:52,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:52,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174872523] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:52,570 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:52,570 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-15 12:14:52,570 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463910754] [2022-02-15 12:14:52,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:52,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 12:14:52,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 12:14:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-02-15 12:14:52,572 INFO L87 Difference]: Start difference. First operand 2619 states and 7488 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 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) [2022-02-15 12:14:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:53,457 INFO L93 Difference]: Finished difference Result 4051 states and 11317 transitions. [2022-02-15 12:14:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 12:14:53,458 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 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 71 [2022-02-15 12:14:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:53,466 INFO L225 Difference]: With dead ends: 4051 [2022-02-15 12:14:53,466 INFO L226 Difference]: Without dead ends: 4051 [2022-02-15 12:14:53,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=610, Invalid=2696, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 12:14:53,467 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 644 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:53,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 1253 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 12:14:53,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2022-02-15 12:14:53,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 2899. [2022-02-15 12:14:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2898 states have (on average 2.8771566597653555) internal successors, (8338), 2898 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:53,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 8338 transitions. [2022-02-15 12:14:53,547 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 8338 transitions. Word has length 71 [2022-02-15 12:14:53,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:53,548 INFO L470 AbstractCegarLoop]: Abstraction has 2899 states and 8338 transitions. [2022-02-15 12:14:53,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 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) [2022-02-15 12:14:53,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 8338 transitions. [2022-02-15 12:14:53,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:14:53,554 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:53,554 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:14:53,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:53,767 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,SelfDestructingSolverStorable22 [2022-02-15 12:14:53,768 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:53,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:53,768 INFO L85 PathProgramCache]: Analyzing trace with hash -330252237, now seen corresponding path program 18 times [2022-02-15 12:14:53,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:53,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091551325] [2022-02-15 12:14:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:53,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:53,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:53,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091551325] [2022-02-15 12:14:53,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091551325] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:53,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650924482] [2022-02-15 12:14:53,839 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:14:53,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:53,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:53,841 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) [2022-02-15 12:14:53,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-15 12:14:53,917 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-15 12:14:53,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:53,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:14:53,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:54,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:54,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:54,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650924482] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:54,386 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:54,386 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-02-15 12:14:54,386 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168578583] [2022-02-15 12:14:54,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:54,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 12:14:54,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:54,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 12:14:54,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-02-15 12:14:54,387 INFO L87 Difference]: Start difference. First operand 2899 states and 8338 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:55,147 INFO L93 Difference]: Finished difference Result 4243 states and 12040 transitions. [2022-02-15 12:14:55,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 12:14:55,147 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 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 71 [2022-02-15 12:14:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:55,157 INFO L225 Difference]: With dead ends: 4243 [2022-02-15 12:14:55,157 INFO L226 Difference]: Without dead ends: 4207 [2022-02-15 12:14:55,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=720, Invalid=2702, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 12:14:55,158 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 917 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:55,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 963 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:14:55,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2022-02-15 12:14:55,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3031. [2022-02-15 12:14:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 3030 states have (on average 2.872937293729373) internal successors, (8705), 3030 states have internal predecessors, (8705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 8705 transitions. [2022-02-15 12:14:55,235 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 8705 transitions. Word has length 71 [2022-02-15 12:14:55,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:55,235 INFO L470 AbstractCegarLoop]: Abstraction has 3031 states and 8705 transitions. [2022-02-15 12:14:55,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:55,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 8705 transitions. [2022-02-15 12:14:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:14:55,242 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:55,242 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:14:55,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-02-15 12:14:55,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:55,467 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:55,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:55,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1918730893, now seen corresponding path program 19 times [2022-02-15 12:14:55,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:55,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809669951] [2022-02-15 12:14:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:55,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:55,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:55,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809669951] [2022-02-15 12:14:55,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809669951] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:55,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348255010] [2022-02-15 12:14:55,549 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:14:55,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:55,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:55,552 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:14:55,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-15 12:14:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:55,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:14:55,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:55,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:56,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348255010] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:56,122 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:56,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-15 12:14:56,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018164318] [2022-02-15 12:14:56,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:56,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 12:14:56,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:56,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 12:14:56,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2022-02-15 12:14:56,123 INFO L87 Difference]: Start difference. First operand 3031 states and 8705 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:56,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:56,888 INFO L93 Difference]: Finished difference Result 4288 states and 12175 transitions. [2022-02-15 12:14:56,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 12:14:56,889 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 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 71 [2022-02-15 12:14:56,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:56,896 INFO L225 Difference]: With dead ends: 4288 [2022-02-15 12:14:56,896 INFO L226 Difference]: Without dead ends: 4258 [2022-02-15 12:14:56,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=578, Invalid=2284, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 12:14:56,897 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 465 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:56,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 1116 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:14:56,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4258 states. [2022-02-15 12:14:56,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4258 to 3295. [2022-02-15 12:14:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3295 states, 3294 states have (on average 2.8776563448694596) internal successors, (9479), 3294 states have internal predecessors, (9479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3295 states to 3295 states and 9479 transitions. [2022-02-15 12:14:56,980 INFO L78 Accepts]: Start accepts. Automaton has 3295 states and 9479 transitions. Word has length 71 [2022-02-15 12:14:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:56,980 INFO L470 AbstractCegarLoop]: Abstraction has 3295 states and 9479 transitions. [2022-02-15 12:14:56,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3295 states and 9479 transitions. [2022-02-15 12:14:56,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:14:56,988 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:56,988 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:14:57,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:57,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:57,203 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:57,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1669584623, now seen corresponding path program 20 times [2022-02-15 12:14:57,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:57,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869938415] [2022-02-15 12:14:57,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:57,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:57,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:57,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:57,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869938415] [2022-02-15 12:14:57,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869938415] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:57,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138394341] [2022-02-15 12:14:57,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:14:57,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:57,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:57,290 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:14:57,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-15 12:14:57,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:14:57,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:57,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:14:57,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:57,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:14:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:57,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138394341] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:14:57,826 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:14:57,826 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-15 12:14:57,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38007150] [2022-02-15 12:14:57,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:14:57,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 12:14:57,827 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:57,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 12:14:57,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-02-15 12:14:57,827 INFO L87 Difference]: Start difference. First operand 3295 states and 9479 transitions. Second operand has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:58,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:58,564 INFO L93 Difference]: Finished difference Result 4939 states and 14079 transitions. [2022-02-15 12:14:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 12:14:58,564 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 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 71 [2022-02-15 12:14:58,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:58,573 INFO L225 Difference]: With dead ends: 4939 [2022-02-15 12:14:58,573 INFO L226 Difference]: Without dead ends: 4864 [2022-02-15 12:14:58,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=491, Invalid=1959, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 12:14:58,574 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 424 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:58,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 1058 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:14:58,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4864 states. [2022-02-15 12:14:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4864 to 3487. [2022-02-15 12:14:58,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3487 states, 3486 states have (on average 2.88324727481354) internal successors, (10051), 3486 states have internal predecessors, (10051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3487 states to 3487 states and 10051 transitions. [2022-02-15 12:14:58,673 INFO L78 Accepts]: Start accepts. Automaton has 3487 states and 10051 transitions. Word has length 71 [2022-02-15 12:14:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:58,673 INFO L470 AbstractCegarLoop]: Abstraction has 3487 states and 10051 transitions. [2022-02-15 12:14:58,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.476190476190476) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3487 states and 10051 transitions. [2022-02-15 12:14:58,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:14:58,681 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:58,681 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:14:58,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:58,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:58,907 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:58,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:58,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1262000235, now seen corresponding path program 21 times [2022-02-15 12:14:58,907 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:58,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887252940] [2022-02-15 12:14:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:58,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:58,966 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:58,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887252940] [2022-02-15 12:14:58,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887252940] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:58,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915967761] [2022-02-15 12:14:58,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:14:58,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:58,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:58,968 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:14:58,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-15 12:14:59,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-15 12:14:59,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:59,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-15 12:14:59,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:14:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:14:59,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 12:14:59,325 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915967761] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:14:59,325 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 12:14:59,325 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 19 [2022-02-15 12:14:59,325 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546499207] [2022-02-15 12:14:59,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:14:59,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 12:14:59,327 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:14:59,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 12:14:59,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-02-15 12:14:59,328 INFO L87 Difference]: Start difference. First operand 3487 states and 10051 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:59,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:14:59,463 INFO L93 Difference]: Finished difference Result 3637 states and 10397 transitions. [2022-02-15 12:14:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:14:59,464 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-02-15 12:14:59,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:14:59,472 INFO L225 Difference]: With dead ends: 3637 [2022-02-15 12:14:59,472 INFO L226 Difference]: Without dead ends: 3418 [2022-02-15 12:14:59,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-02-15 12:14:59,473 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 149 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:14:59,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 731 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:14:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2022-02-15 12:14:59,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 2891. [2022-02-15 12:14:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2891 states, 2890 states have (on average 2.7653979238754327) internal successors, (7992), 2890 states have internal predecessors, (7992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2891 states to 2891 states and 7992 transitions. [2022-02-15 12:14:59,533 INFO L78 Accepts]: Start accepts. Automaton has 2891 states and 7992 transitions. Word has length 71 [2022-02-15 12:14:59,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:14:59,534 INFO L470 AbstractCegarLoop]: Abstraction has 2891 states and 7992 transitions. [2022-02-15 12:14:59,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:14:59,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2891 states and 7992 transitions. [2022-02-15 12:14:59,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:14:59,540 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:14:59,540 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:14:59,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-15 12:14:59,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-15 12:14:59,763 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:14:59,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:14:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash 986982895, now seen corresponding path program 22 times [2022-02-15 12:14:59,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:14:59,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393541336] [2022-02-15 12:14:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:14:59,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:14:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:14:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:14:59,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:14:59,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393541336] [2022-02-15 12:14:59,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393541336] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:14:59,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452001324] [2022-02-15 12:14:59,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:14:59,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:14:59,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:14:59,826 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:14:59,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-15 12:14:59,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:14:59,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:14:59,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-15 12:14:59,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:00,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:00,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452001324] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:00,434 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:00,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-02-15 12:15:00,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142756862] [2022-02-15 12:15:00,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:00,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 12:15:00,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:00,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 12:15:00,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-02-15 12:15:00,435 INFO L87 Difference]: Start difference. First operand 2891 states and 7992 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:00,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:00,936 INFO L93 Difference]: Finished difference Result 3867 states and 10596 transitions. [2022-02-15 12:15:00,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 12:15:00,936 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 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 71 [2022-02-15 12:15:00,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:00,948 INFO L225 Difference]: With dead ends: 3867 [2022-02-15 12:15:00,948 INFO L226 Difference]: Without dead ends: 3837 [2022-02-15 12:15:00,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=404, Invalid=1402, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 12:15:00,949 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 359 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:00,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 1060 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:15:00,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2022-02-15 12:15:01,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 2991. [2022-02-15 12:15:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2990 states have (on average 2.763545150501672) internal successors, (8263), 2990 states have internal predecessors, (8263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 8263 transitions. [2022-02-15 12:15:01,021 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 8263 transitions. Word has length 71 [2022-02-15 12:15:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:01,021 INFO L470 AbstractCegarLoop]: Abstraction has 2991 states and 8263 transitions. [2022-02-15 12:15:01,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 8263 transitions. [2022-02-15 12:15:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:15:01,028 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:01,028 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:01,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-15 12:15:01,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-15 12:15:01,247 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:01,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:01,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2079147621, now seen corresponding path program 23 times [2022-02-15 12:15:01,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:01,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49083279] [2022-02-15 12:15:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:01,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:01,326 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:01,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49083279] [2022-02-15 12:15:01,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49083279] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:01,326 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038323819] [2022-02-15 12:15:01,326 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:15:01,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:01,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:01,328 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:01,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-15 12:15:01,400 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:15:01,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:15:01,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:15:01,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:01,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:01,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038323819] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:01,879 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:01,879 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-15 12:15:01,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190078768] [2022-02-15 12:15:01,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:01,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 12:15:01,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:01,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 12:15:01,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-02-15 12:15:01,880 INFO L87 Difference]: Start difference. First operand 2991 states and 8263 transitions. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:02,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:02,538 INFO L93 Difference]: Finished difference Result 3891 states and 10644 transitions. [2022-02-15 12:15:02,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 12:15:02,539 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 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 71 [2022-02-15 12:15:02,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:02,545 INFO L225 Difference]: With dead ends: 3891 [2022-02-15 12:15:02,545 INFO L226 Difference]: Without dead ends: 3846 [2022-02-15 12:15:02,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=554, Invalid=1896, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 12:15:02,546 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 567 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:02,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 1040 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:15:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2022-02-15 12:15:02,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 3131. [2022-02-15 12:15:02,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 3130 states have (on average 2.7654952076677315) internal successors, (8656), 3130 states have internal predecessors, (8656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:02,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 8656 transitions. [2022-02-15 12:15:02,592 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 8656 transitions. Word has length 71 [2022-02-15 12:15:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:02,593 INFO L470 AbstractCegarLoop]: Abstraction has 3131 states and 8656 transitions. [2022-02-15 12:15:02,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:02,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 8656 transitions. [2022-02-15 12:15:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:15:02,597 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:02,597 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:02,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-02-15 12:15:02,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-15 12:15:02,811 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:02,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:02,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1830001351, now seen corresponding path program 24 times [2022-02-15 12:15:02,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:02,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036079453] [2022-02-15 12:15:02,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:02,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:02,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:02,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036079453] [2022-02-15 12:15:02,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036079453] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:02,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619653949] [2022-02-15 12:15:02,892 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:15:02,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:02,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:02,893 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:02,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-15 12:15:02,965 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-15 12:15:02,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:15:02,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:15:02,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:03,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:03,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619653949] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:03,374 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:03,374 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-02-15 12:15:03,374 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651520979] [2022-02-15 12:15:03,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:03,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-15 12:15:03,375 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:03,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-15 12:15:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-02-15 12:15:03,375 INFO L87 Difference]: Start difference. First operand 3131 states and 8656 transitions. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:03,812 INFO L93 Difference]: Finished difference Result 4192 states and 11575 transitions. [2022-02-15 12:15:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 12:15:03,813 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 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 71 [2022-02-15 12:15:03,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:03,818 INFO L225 Difference]: With dead ends: 4192 [2022-02-15 12:15:03,818 INFO L226 Difference]: Without dead ends: 4117 [2022-02-15 12:15:03,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 12:15:03,819 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 295 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:03,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 807 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2022-02-15 12:15:03,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 3287. [2022-02-15 12:15:03,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3286 states have (on average 2.764759586122946) internal successors, (9085), 3286 states have internal predecessors, (9085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:03,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 9085 transitions. [2022-02-15 12:15:03,886 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 9085 transitions. Word has length 71 [2022-02-15 12:15:03,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:03,886 INFO L470 AbstractCegarLoop]: Abstraction has 3287 states and 9085 transitions. [2022-02-15 12:15:03,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:03,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 9085 transitions. [2022-02-15 12:15:03,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:15:03,892 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:03,892 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:03,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-15 12:15:04,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:04,107 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:04,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:04,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1147399623, now seen corresponding path program 25 times [2022-02-15 12:15:04,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:04,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17939445] [2022-02-15 12:15:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:04,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:04,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:04,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17939445] [2022-02-15 12:15:04,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17939445] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:04,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589586885] [2022-02-15 12:15:04,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:15:04,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:04,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:04,174 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:04,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-15 12:15:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:04,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:15:04,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:04,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:04,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589586885] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:04,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:04,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 23 [2022-02-15 12:15:04,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795685743] [2022-02-15 12:15:04,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:04,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 12:15:04,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:04,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 12:15:04,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-02-15 12:15:04,694 INFO L87 Difference]: Start difference. First operand 3287 states and 9085 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:05,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:05,488 INFO L93 Difference]: Finished difference Result 4669 states and 12823 transitions. [2022-02-15 12:15:05,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 12:15:05,488 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 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 71 [2022-02-15 12:15:05,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:05,495 INFO L225 Difference]: With dead ends: 4669 [2022-02-15 12:15:05,495 INFO L226 Difference]: Without dead ends: 4624 [2022-02-15 12:15:05,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=709, Invalid=2597, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 12:15:05,496 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 721 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:05,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 1262 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-15 12:15:05,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2022-02-15 12:15:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 3443. [2022-02-15 12:15:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3443 states, 3442 states have (on average 2.7629285299244626) internal successors, (9510), 3442 states have internal predecessors, (9510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 9510 transitions. [2022-02-15 12:15:05,554 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 9510 transitions. Word has length 71 [2022-02-15 12:15:05,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:05,554 INFO L470 AbstractCegarLoop]: Abstraction has 3443 states and 9510 transitions. [2022-02-15 12:15:05,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:05,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 9510 transitions. [2022-02-15 12:15:05,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:15:05,559 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:05,559 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:05,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-15 12:15:05,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:05,760 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:05,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1375488781, now seen corresponding path program 26 times [2022-02-15 12:15:05,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:05,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367440301] [2022-02-15 12:15:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:05,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:05,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:05,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367440301] [2022-02-15 12:15:05,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367440301] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:05,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548297647] [2022-02-15 12:15:05,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:15:05,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:05,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:05,840 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:05,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-15 12:15:05,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:15:05,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:15:05,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:15:05,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:06,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:06,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548297647] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:06,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:06,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-02-15 12:15:06,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689908053] [2022-02-15 12:15:06,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:06,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-15 12:15:06,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:06,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-15 12:15:06,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2022-02-15 12:15:06,410 INFO L87 Difference]: Start difference. First operand 3443 states and 9510 transitions. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:06,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:06,991 INFO L93 Difference]: Finished difference Result 5000 states and 13607 transitions. [2022-02-15 12:15:06,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 12:15:06,992 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 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 71 [2022-02-15 12:15:06,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:06,998 INFO L225 Difference]: With dead ends: 5000 [2022-02-15 12:15:06,998 INFO L226 Difference]: Without dead ends: 4970 [2022-02-15 12:15:06,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=581, Invalid=2175, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 12:15:06,999 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 644 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:06,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 978 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:15:07,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4970 states. [2022-02-15 12:15:07,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 3643. [2022-02-15 12:15:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 3642 states have (on average 2.767710049423394) internal successors, (10080), 3642 states have internal predecessors, (10080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 10080 transitions. [2022-02-15 12:15:07,056 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 10080 transitions. Word has length 71 [2022-02-15 12:15:07,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:07,056 INFO L470 AbstractCegarLoop]: Abstraction has 3643 states and 10080 transitions. [2022-02-15 12:15:07,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:07,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 10080 transitions. [2022-02-15 12:15:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-02-15 12:15:07,062 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:07,062 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:07,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-02-15 12:15:07,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-02-15 12:15:07,263 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:07,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:07,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2021695705, now seen corresponding path program 27 times [2022-02-15 12:15:07,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:07,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111339570] [2022-02-15 12:15:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:07,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:07,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:07,368 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:07,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111339570] [2022-02-15 12:15:07,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111339570] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:07,368 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786791416] [2022-02-15 12:15:07,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:15:07,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:07,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:07,369 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:07,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-15 12:15:07,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-15 12:15:07,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:15:07,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-15 12:15:07,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:07,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:07,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:07,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786791416] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:07,895 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:07,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 25 [2022-02-15 12:15:07,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558859547] [2022-02-15 12:15:07,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:07,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-15 12:15:07,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:07,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-15 12:15:07,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-02-15 12:15:07,896 INFO L87 Difference]: Start difference. First operand 3643 states and 10080 transitions. Second operand has 25 states, 25 states have (on average 5.64) internal successors, (141), 25 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:09,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:09,768 INFO L93 Difference]: Finished difference Result 5584 states and 15316 transitions. [2022-02-15 12:15:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-15 12:15:09,768 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.64) internal successors, (141), 25 states have internal predecessors, (141), 0 states have call successors, (0), 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 71 [2022-02-15 12:15:09,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:09,777 INFO L225 Difference]: With dead ends: 5584 [2022-02-15 12:15:09,777 INFO L226 Difference]: Without dead ends: 5449 [2022-02-15 12:15:09,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3410 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1884, Invalid=8828, Unknown=0, NotChecked=0, Total=10712 [2022-02-15 12:15:09,779 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 553 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:09,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 1891 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-15 12:15:09,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2022-02-15 12:15:09,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 4219. [2022-02-15 12:15:09,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4219 states, 4218 states have (on average 2.761498340445709) internal successors, (11648), 4218 states have internal predecessors, (11648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4219 states to 4219 states and 11648 transitions. [2022-02-15 12:15:09,860 INFO L78 Accepts]: Start accepts. Automaton has 4219 states and 11648 transitions. Word has length 71 [2022-02-15 12:15:09,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:09,860 INFO L470 AbstractCegarLoop]: Abstraction has 4219 states and 11648 transitions. [2022-02-15 12:15:09,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.64) internal successors, (141), 25 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4219 states and 11648 transitions. [2022-02-15 12:15:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 12:15:09,867 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:09,867 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:09,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-15 12:15:10,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-02-15 12:15:10,076 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:10,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:10,076 INFO L85 PathProgramCache]: Analyzing trace with hash 935711470, now seen corresponding path program 28 times [2022-02-15 12:15:10,076 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:10,076 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868359082] [2022-02-15 12:15:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:10,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 12:15:10,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:10,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868359082] [2022-02-15 12:15:10,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868359082] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:10,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131225732] [2022-02-15 12:15:10,171 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:15:10,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:10,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:10,176 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:10,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-15 12:15:10,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:15:10,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:15:10,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-15 12:15:10,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:10,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:11,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131225732] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:11,089 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:11,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-02-15 12:15:11,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435845119] [2022-02-15 12:15:11,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:11,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 12:15:11,090 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:11,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 12:15:11,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:15:11,091 INFO L87 Difference]: Start difference. First operand 4219 states and 11648 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:14,283 INFO L93 Difference]: Finished difference Result 6095 states and 16654 transitions. [2022-02-15 12:15:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-02-15 12:15:14,283 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 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 75 [2022-02-15 12:15:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:14,292 INFO L225 Difference]: With dead ends: 6095 [2022-02-15 12:15:14,292 INFO L226 Difference]: Without dead ends: 5999 [2022-02-15 12:15:14,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5277 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2374, Invalid=15182, Unknown=0, NotChecked=0, Total=17556 [2022-02-15 12:15:14,295 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 1123 mSDsluCounter, 4281 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 4250 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:14,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 4250 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2215 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 12:15:14,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5999 states. [2022-02-15 12:15:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5999 to 4422. [2022-02-15 12:15:14,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4422 states, 4421 states have (on average 2.764985297444017) internal successors, (12224), 4421 states have internal predecessors, (12224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 12224 transitions. [2022-02-15 12:15:14,380 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 12224 transitions. Word has length 75 [2022-02-15 12:15:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:14,380 INFO L470 AbstractCegarLoop]: Abstraction has 4422 states and 12224 transitions. [2022-02-15 12:15:14,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 12224 transitions. [2022-02-15 12:15:14,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 12:15:14,386 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:14,386 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:14,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-02-15 12:15:14,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:14,586 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:14,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1011120782, now seen corresponding path program 29 times [2022-02-15 12:15:14,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:14,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917842032] [2022-02-15 12:15:14,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:14,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:14,698 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:14,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917842032] [2022-02-15 12:15:14,698 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917842032] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:14,698 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535525770] [2022-02-15 12:15:14,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:15:14,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:14,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:14,699 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:14,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-15 12:15:14,761 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-15 12:15:14,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:15:14,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-15 12:15:14,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:15,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:15,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-15 12:15:15,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535525770] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:15,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:15,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 30 [2022-02-15 12:15:15,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070759465] [2022-02-15 12:15:15,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:15,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-02-15 12:15:15,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:15,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-02-15 12:15:15,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2022-02-15 12:15:15,411 INFO L87 Difference]: Start difference. First operand 4422 states and 12224 transitions. Second operand has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:17,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:17,602 INFO L93 Difference]: Finished difference Result 7036 states and 19367 transitions. [2022-02-15 12:15:17,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-15 12:15:17,602 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 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 75 [2022-02-15 12:15:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:17,613 INFO L225 Difference]: With dead ends: 7036 [2022-02-15 12:15:17,614 INFO L226 Difference]: Without dead ends: 6913 [2022-02-15 12:15:17,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3207 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1374, Invalid=9756, Unknown=0, NotChecked=0, Total=11130 [2022-02-15 12:15:17,616 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 795 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 3220 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:17,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 3220 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:15:17,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6913 states. [2022-02-15 12:15:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6913 to 4314. [2022-02-15 12:15:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4314 states, 4313 states have (on average 2.7662879666125666) internal successors, (11931), 4313 states have internal predecessors, (11931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4314 states to 4314 states and 11931 transitions. [2022-02-15 12:15:17,740 INFO L78 Accepts]: Start accepts. Automaton has 4314 states and 11931 transitions. Word has length 75 [2022-02-15 12:15:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:17,741 INFO L470 AbstractCegarLoop]: Abstraction has 4314 states and 11931 transitions. [2022-02-15 12:15:17,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.266666666666667) internal successors, (158), 30 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4314 states and 11931 transitions. [2022-02-15 12:15:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 12:15:17,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:17,748 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:17,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-02-15 12:15:17,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:17,966 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash 2138665602, now seen corresponding path program 30 times [2022-02-15 12:15:17,966 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:17,966 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68663228] [2022-02-15 12:15:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:17,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:18,069 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:18,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68663228] [2022-02-15 12:15:18,069 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68663228] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:18,069 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926103857] [2022-02-15 12:15:18,069 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:15:18,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:18,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:18,070 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:18,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-15 12:15:18,135 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-15 12:15:18,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:15:18,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-15 12:15:18,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:18,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-15 12:15:18,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926103857] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:18,813 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:18,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-02-15 12:15:18,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341785151] [2022-02-15 12:15:18,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:18,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 12:15:18,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:18,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 12:15:18,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:15:18,815 INFO L87 Difference]: Start difference. First operand 4314 states and 11931 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:22,166 INFO L93 Difference]: Finished difference Result 8620 states and 23707 transitions. [2022-02-15 12:15:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-02-15 12:15:22,166 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 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 75 [2022-02-15 12:15:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:22,178 INFO L225 Difference]: With dead ends: 8620 [2022-02-15 12:15:22,178 INFO L226 Difference]: Without dead ends: 8485 [2022-02-15 12:15:22,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6140 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2268, Invalid=17472, Unknown=0, NotChecked=0, Total=19740 [2022-02-15 12:15:22,179 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 1026 mSDsluCounter, 3814 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 3791 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:22,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 3791 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 12:15:22,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8485 states. [2022-02-15 12:15:22,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8485 to 4642. [2022-02-15 12:15:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4642 states, 4641 states have (on average 2.7659987071751777) internal successors, (12837), 4641 states have internal predecessors, (12837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:22,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4642 states to 4642 states and 12837 transitions. [2022-02-15 12:15:22,277 INFO L78 Accepts]: Start accepts. Automaton has 4642 states and 12837 transitions. Word has length 75 [2022-02-15 12:15:22,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:22,278 INFO L470 AbstractCegarLoop]: Abstraction has 4642 states and 12837 transitions. [2022-02-15 12:15:22,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:22,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4642 states and 12837 transitions. [2022-02-15 12:15:22,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 12:15:22,283 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:22,283 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:22,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-02-15 12:15:22,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:22,484 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:22,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:22,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1108728612, now seen corresponding path program 31 times [2022-02-15 12:15:22,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:22,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466711998] [2022-02-15 12:15:22,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:22,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:22,584 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:22,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466711998] [2022-02-15 12:15:22,584 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466711998] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:22,584 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253292662] [2022-02-15 12:15:22,584 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:15:22,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:22,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:22,585 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:22,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-15 12:15:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:22,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-15 12:15:22,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:22,890 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:22,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:23,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253292662] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:23,180 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:23,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2022-02-15 12:15:23,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616302910] [2022-02-15 12:15:23,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:23,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-15 12:15:23,181 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-15 12:15:23,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-02-15 12:15:23,182 INFO L87 Difference]: Start difference. First operand 4642 states and 12837 transitions. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:23,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:23,480 INFO L93 Difference]: Finished difference Result 6459 states and 17723 transitions. [2022-02-15 12:15:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 12:15:23,481 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 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 75 [2022-02-15 12:15:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:23,491 INFO L225 Difference]: With dead ends: 6459 [2022-02-15 12:15:23,491 INFO L226 Difference]: Without dead ends: 6372 [2022-02-15 12:15:23,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 145 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2022-02-15 12:15:23,492 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 269 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:23,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 902 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6372 states. [2022-02-15 12:15:23,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6372 to 4530. [2022-02-15 12:15:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4530 states, 4529 states have (on average 2.7663943475380877) internal successors, (12529), 4529 states have internal predecessors, (12529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4530 states to 4530 states and 12529 transitions. [2022-02-15 12:15:23,577 INFO L78 Accepts]: Start accepts. Automaton has 4530 states and 12529 transitions. Word has length 75 [2022-02-15 12:15:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:23,577 INFO L470 AbstractCegarLoop]: Abstraction has 4530 states and 12529 transitions. [2022-02-15 12:15:23,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:23,577 INFO L276 IsEmpty]: Start isEmpty. Operand 4530 states and 12529 transitions. [2022-02-15 12:15:23,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 12:15:23,583 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:23,583 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:23,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-02-15 12:15:23,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-02-15 12:15:23,783 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1830124880, now seen corresponding path program 32 times [2022-02-15 12:15:23,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:23,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389549183] [2022-02-15 12:15:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:23,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:23,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:23,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389549183] [2022-02-15 12:15:23,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389549183] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:23,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578437861] [2022-02-15 12:15:23,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:15:23,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:23,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:23,880 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:23,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-15 12:15:23,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:15:23,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:15:23,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-15 12:15:23,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:24,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:24,608 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578437861] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:24,608 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:24,608 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-02-15 12:15:24,608 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432082213] [2022-02-15 12:15:24,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:24,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 12:15:24,609 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:24,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 12:15:24,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:15:24,610 INFO L87 Difference]: Start difference. First operand 4530 states and 12529 transitions. Second operand has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:28,347 INFO L93 Difference]: Finished difference Result 8700 states and 23904 transitions. [2022-02-15 12:15:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-02-15 12:15:28,347 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 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 75 [2022-02-15 12:15:28,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:28,360 INFO L225 Difference]: With dead ends: 8700 [2022-02-15 12:15:28,360 INFO L226 Difference]: Without dead ends: 8577 [2022-02-15 12:15:28,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 248 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7747 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2605, Invalid=20957, Unknown=0, NotChecked=0, Total=23562 [2022-02-15 12:15:28,362 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 1204 mSDsluCounter, 4440 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 4376 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:28,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1204 Valid, 4376 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 12:15:28,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8577 states. [2022-02-15 12:15:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8577 to 4230. [2022-02-15 12:15:28,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4229 states have (on average 2.7666114920785057) internal successors, (11700), 4229 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:28,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 11700 transitions. [2022-02-15 12:15:28,437 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 11700 transitions. Word has length 75 [2022-02-15 12:15:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:28,438 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 11700 transitions. [2022-02-15 12:15:28,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.161290322580645) internal successors, (160), 31 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 11700 transitions. [2022-02-15 12:15:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 12:15:28,442 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:28,442 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:28,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-15 12:15:28,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-15 12:15:28,643 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:28,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:28,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1462813294, now seen corresponding path program 33 times [2022-02-15 12:15:28,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:28,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790152443] [2022-02-15 12:15:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:28,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:28,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:28,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790152443] [2022-02-15 12:15:28,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790152443] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:28,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984255437] [2022-02-15 12:15:28,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:15:28,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:28,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:28,736 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:28,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-15 12:15:28,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 12:15:28,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:15:28,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-15 12:15:28,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:29,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-15 12:15:29,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984255437] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:29,081 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-15 12:15:29,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 16 [2022-02-15 12:15:29,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415794886] [2022-02-15 12:15:29,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:29,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 12:15:29,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:29,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 12:15:29,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-02-15 12:15:29,083 INFO L87 Difference]: Start difference. First operand 4230 states and 11700 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:29,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:29,251 INFO L93 Difference]: Finished difference Result 4933 states and 13523 transitions. [2022-02-15 12:15:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 12:15:29,252 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-02-15 12:15:29,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:29,261 INFO L225 Difference]: With dead ends: 4933 [2022-02-15 12:15:29,261 INFO L226 Difference]: Without dead ends: 4702 [2022-02-15 12:15:29,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-02-15 12:15:29,262 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 228 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:29,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 685 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:29,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4702 states. [2022-02-15 12:15:29,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4702 to 4362. [2022-02-15 12:15:29,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4362 states, 4361 states have (on average 2.746847053428113) internal successors, (11979), 4361 states have internal predecessors, (11979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:29,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4362 states to 4362 states and 11979 transitions. [2022-02-15 12:15:29,386 INFO L78 Accepts]: Start accepts. Automaton has 4362 states and 11979 transitions. Word has length 75 [2022-02-15 12:15:29,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:29,386 INFO L470 AbstractCegarLoop]: Abstraction has 4362 states and 11979 transitions. [2022-02-15 12:15:29,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:29,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4362 states and 11979 transitions. [2022-02-15 12:15:29,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 12:15:29,393 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:29,394 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:29,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-15 12:15:29,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-15 12:15:29,617 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:29,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:29,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1818044630, now seen corresponding path program 34 times [2022-02-15 12:15:29,618 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:29,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670502713] [2022-02-15 12:15:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:29,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:29,704 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:29,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670502713] [2022-02-15 12:15:29,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670502713] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:29,704 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720095546] [2022-02-15 12:15:29,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:15:29,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:29,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:29,706 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:29,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-15 12:15:29,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:15:29,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:15:29,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-15 12:15:29,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:30,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:30,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720095546] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:30,434 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:30,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-02-15 12:15:30,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889387908] [2022-02-15 12:15:30,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:30,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 12:15:30,435 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:30,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 12:15:30,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:15:30,435 INFO L87 Difference]: Start difference. First operand 4362 states and 11979 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:33,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:33,744 INFO L93 Difference]: Finished difference Result 7267 states and 20024 transitions. [2022-02-15 12:15:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-15 12:15:33,745 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 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 75 [2022-02-15 12:15:33,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:33,755 INFO L225 Difference]: With dead ends: 7267 [2022-02-15 12:15:33,755 INFO L226 Difference]: Without dead ends: 6580 [2022-02-15 12:15:33,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6209 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1963, Invalid=17777, Unknown=0, NotChecked=0, Total=19740 [2022-02-15 12:15:33,757 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 758 mSDsluCounter, 5441 mSDsCounter, 0 mSdLazyCounter, 2900 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 3002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:33,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 5476 Invalid, 3002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2900 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 12:15:33,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2022-02-15 12:15:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 2380. [2022-02-15 12:15:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2379 states have (on average 2.666246321984027) internal successors, (6343), 2379 states have internal predecessors, (6343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:33,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 6343 transitions. [2022-02-15 12:15:33,808 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 6343 transitions. Word has length 75 [2022-02-15 12:15:33,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:33,809 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 6343 transitions. [2022-02-15 12:15:33,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 31 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 6343 transitions. [2022-02-15 12:15:33,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-15 12:15:33,811 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:33,811 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:33,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-15 12:15:34,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-15 12:15:34,012 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:34,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:34,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1158266930, now seen corresponding path program 35 times [2022-02-15 12:15:34,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:34,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768400330] [2022-02-15 12:15:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:34,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 12:15:34,124 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:34,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768400330] [2022-02-15 12:15:34,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768400330] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:34,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780529189] [2022-02-15 12:15:34,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:15:34,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:34,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:34,126 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:34,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-15 12:15:34,190 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-15 12:15:34,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:15:34,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-15 12:15:34,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:34,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:34,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:34,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-02-15 12:15:34,889 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780529189] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:34,889 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:34,889 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 31 [2022-02-15 12:15:34,889 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048206118] [2022-02-15 12:15:34,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:34,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 12:15:34,890 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:34,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 12:15:34,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:15:34,890 INFO L87 Difference]: Start difference. First operand 2380 states and 6343 transitions. Second operand has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:37,316 INFO L93 Difference]: Finished difference Result 3211 states and 8576 transitions. [2022-02-15 12:15:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-15 12:15:37,316 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 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 75 [2022-02-15 12:15:37,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:37,316 INFO L225 Difference]: With dead ends: 3211 [2022-02-15 12:15:37,317 INFO L226 Difference]: Without dead ends: 268 [2022-02-15 12:15:37,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3415 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1713, Invalid=10719, Unknown=0, NotChecked=0, Total=12432 [2022-02-15 12:15:37,318 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 698 mSDsluCounter, 3575 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:37,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 3606 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 12:15:37,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-02-15 12:15:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 240. [2022-02-15 12:15:37,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.8535564853556485) internal successors, (443), 239 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 443 transitions. [2022-02-15 12:15:37,321 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 443 transitions. Word has length 75 [2022-02-15 12:15:37,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:37,321 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 443 transitions. [2022-02-15 12:15:37,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.129032258064516) internal successors, (159), 31 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 443 transitions. [2022-02-15 12:15:37,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-15 12:15:37,322 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:37,322 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:37,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-02-15 12:15:37,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:37,531 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:37,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1902743741, now seen corresponding path program 36 times [2022-02-15 12:15:37,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:37,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68577442] [2022-02-15 12:15:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:37,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:37,631 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:37,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68577442] [2022-02-15 12:15:37,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68577442] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:37,631 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040385808] [2022-02-15 12:15:37,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:15:37,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:37,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:37,633 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:37,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-15 12:15:37,708 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-15 12:15:37,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:15:37,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-15 12:15:37,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:38,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:38,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040385808] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:38,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:38,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 31 [2022-02-15 12:15:38,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474672588] [2022-02-15 12:15:38,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:38,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-15 12:15:38,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:38,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-15 12:15:38,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2022-02-15 12:15:38,381 INFO L87 Difference]: Start difference. First operand 240 states and 443 transitions. Second operand has 31 states, 31 states have (on average 4.419354838709677) internal successors, (137), 31 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:38,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:38,841 INFO L93 Difference]: Finished difference Result 336 states and 635 transitions. [2022-02-15 12:15:38,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 12:15:38,842 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.419354838709677) internal successors, (137), 31 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-02-15 12:15:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:38,842 INFO L225 Difference]: With dead ends: 336 [2022-02-15 12:15:38,842 INFO L226 Difference]: Without dead ends: 228 [2022-02-15 12:15:38,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=547, Invalid=2105, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 12:15:38,844 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 525 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:38,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 1327 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 12:15:38,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-02-15 12:15:38,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2022-02-15 12:15:38,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.84304932735426) internal successors, (411), 223 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:38,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 411 transitions. [2022-02-15 12:15:38,847 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 411 transitions. Word has length 79 [2022-02-15 12:15:38,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:38,847 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 411 transitions. [2022-02-15 12:15:38,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.419354838709677) internal successors, (137), 31 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:38,847 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 411 transitions. [2022-02-15 12:15:38,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-02-15 12:15:38,848 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:38,848 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-02-15 12:15:38,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-02-15 12:15:39,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-02-15 12:15:39,071 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:39,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1610720489, now seen corresponding path program 37 times [2022-02-15 12:15:39,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:39,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020958226] [2022-02-15 12:15:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:39,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:39,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:39,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020958226] [2022-02-15 12:15:39,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020958226] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:15:39,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564336179] [2022-02-15 12:15:39,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:15:39,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:39,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:15:39,180 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:15:39,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-15 12:15:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:39,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-15 12:15:39,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:15:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:39,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:15:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:15:39,779 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564336179] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:15:39,779 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:15:39,779 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2022-02-15 12:15:39,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931799792] [2022-02-15 12:15:39,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:15:39,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-15 12:15:39,780 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-15 12:15:39,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2022-02-15 12:15:39,781 INFO L87 Difference]: Start difference. First operand 224 states and 411 transitions. Second operand has 29 states, 29 states have (on average 4.448275862068965) internal successors, (129), 29 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:40,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:40,071 INFO L93 Difference]: Finished difference Result 252 states and 460 transitions. [2022-02-15 12:15:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-15 12:15:40,072 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.448275862068965) internal successors, (129), 29 states have internal predecessors, (129), 0 states have call successors, (0), 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 79 [2022-02-15 12:15:40,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:40,072 INFO L225 Difference]: With dead ends: 252 [2022-02-15 12:15:40,072 INFO L226 Difference]: Without dead ends: 252 [2022-02-15 12:15:40,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=1569, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 12:15:40,073 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 269 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:40,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 702 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-02-15 12:15:40,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 240. [2022-02-15 12:15:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.8368200836820083) internal successors, (439), 239 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 439 transitions. [2022-02-15 12:15:40,076 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 439 transitions. Word has length 79 [2022-02-15 12:15:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:40,076 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 439 transitions. [2022-02-15 12:15:40,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.448275862068965) internal successors, (129), 29 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 439 transitions. [2022-02-15 12:15:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-02-15 12:15:40,077 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:15:40,077 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:15:40,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-15 12:15:40,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:15:40,279 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:15:40,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:15:40,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1862315494, now seen corresponding path program 38 times [2022-02-15 12:15:40,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:15:40,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015210682] [2022-02-15 12:15:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:15:40,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:15:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:15:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-15 12:15:40,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:15:40,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015210682] [2022-02-15 12:15:40,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015210682] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 12:15:40,380 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 12:15:40,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-15 12:15:40,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391064632] [2022-02-15 12:15:40,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 12:15:40,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-15 12:15:40,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:15:40,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-15 12:15:40,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-02-15 12:15:40,381 INFO L87 Difference]: Start difference. First operand 240 states and 439 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:40,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:15:40,479 INFO L93 Difference]: Finished difference Result 237 states and 436 transitions. [2022-02-15 12:15:40,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-15 12:15:40,479 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 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 83 [2022-02-15 12:15:40,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:15:40,480 INFO L225 Difference]: With dead ends: 237 [2022-02-15 12:15:40,480 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 12:15:40,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-02-15 12:15:40,480 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 95 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:15:40,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 558 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 12:15:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 12:15:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 12:15:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 12:15:40,481 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2022-02-15 12:15:40,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:15:40,481 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 12:15:40,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:15:40,481 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 12:15:40,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 12:15:40,483 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-15 12:15:40,483 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-15 12:15:40,484 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-15 12:15:40,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 12:15:40,486 INFO L732 BasicCegarLoop]: Path program histogram: [38, 2, 2, 1, 1] [2022-02-15 12:15:40,488 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-15 12:15:40,488 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 12:15:40,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:15:40 BasicIcfg [2022-02-15 12:15:40,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 12:15:40,490 INFO L158 Benchmark]: Toolchain (without parser) took 82239.82ms. Allocated memory was 188.7MB in the beginning and 440.4MB in the end (delta: 251.7MB). Free memory was 131.1MB in the beginning and 283.3MB in the end (delta: -152.3MB). Peak memory consumption was 100.4MB. Max. memory is 8.0GB. [2022-02-15 12:15:40,490 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 12:15:40,490 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.42ms. Allocated memory was 188.7MB in the beginning and 253.8MB in the end (delta: 65.0MB). Free memory was 130.9MB in the beginning and 226.6MB in the end (delta: -95.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-15 12:15:40,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.86ms. Allocated memory is still 253.8MB. Free memory was 226.1MB in the beginning and 225.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 12:15:40,491 INFO L158 Benchmark]: Boogie Preprocessor took 36.07ms. Allocated memory is still 253.8MB. Free memory was 224.5MB in the beginning and 223.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 12:15:40,491 INFO L158 Benchmark]: RCFGBuilder took 301.56ms. Allocated memory is still 253.8MB. Free memory was 223.4MB in the beginning and 210.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-15 12:15:40,491 INFO L158 Benchmark]: TraceAbstraction took 81566.04ms. Allocated memory was 253.8MB in the beginning and 440.4MB in the end (delta: 186.6MB). Free memory was 210.3MB in the beginning and 283.3MB in the end (delta: -73.0MB). Peak memory consumption was 114.7MB. Max. memory is 8.0GB. [2022-02-15 12:15:40,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 286.42ms. Allocated memory was 188.7MB in the beginning and 253.8MB in the end (delta: 65.0MB). Free memory was 130.9MB in the beginning and 226.6MB in the end (delta: -95.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.86ms. Allocated memory is still 253.8MB. Free memory was 226.1MB in the beginning and 225.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.07ms. Allocated memory is still 253.8MB. Free memory was 224.5MB in the beginning and 223.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 301.56ms. Allocated memory is still 253.8MB. Free memory was 223.4MB in the beginning and 210.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 81566.04ms. Allocated memory was 253.8MB in the beginning and 440.4MB in the end (delta: 186.6MB). Free memory was 210.3MB in the beginning and 283.3MB in the end (delta: -73.0MB). Peak memory consumption was 114.7MB. 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 - PositiveResult [Line: 70]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 95 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 81.4s, OverallIterations: 44, TraceHistogramMax: 3, PathProgramHistogramMax: 38, EmptinessCheckTime: 0.2s, AutomataDifference: 43.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21374 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21374 mSDsluCounter, 65698 SdHoareTripleChecker+Invalid, 10.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64185 mSDsCounter, 2623 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30996 IncrementalHoareTripleChecker+Invalid, 33619 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2623 mSolverCounterUnsat, 5564 mSDtfsCounter, 30996 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7499 GetRequests, 5102 SyntacticMatches, 47 SemanticMatches, 2350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54447 ImplicationChecksByTransitivity, 35.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4642occurred in iteration=36, InterpolantAutomatonStates: 1881, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 44 MinimizatonAttempts, 44910 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 24.0s InterpolantComputationTime, 5652 NumberOfCodeBlocks, 5594 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 7956 ConstructedInterpolants, 0 QuantifiedInterpolants, 31807 SizeOfPredicates, 358 NumberOfNonLiveVariables, 5544 ConjunctsInSsa, 564 ConjunctsInUnsatCore, 114 InterpolantComputations, 11 PerfectInterpolantSequences, 495/840 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-15 12:15:40,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...