/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 22:57:10,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 22:57:10,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 22:57:10,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-10 22:57:10,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-10 22:57:10,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-10 22:57:10,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-10 22:57:10,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-10 22:57:10,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-10 22:57:10,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-10 22:57:10,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-10 22:57:10,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-10 22:57:10,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-10 22:57:10,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-10 22:57:10,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-10 22:57:10,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-10 22:57:10,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-10 22:57:10,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-10 22:57:10,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-10 22:57:10,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-10 22:57:10,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-10 22:57:10,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-10 22:57:10,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-10 22:57:10,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-10 22:57:10,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-10 22:57:10,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-10 22:57:10,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-10 22:57:10,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-10 22:57:10,207 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 [2022-02-10 22:57:10,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 22:57:10,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 22:57:10,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 22:57:10,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 22:57:10,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 22:57:10,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 22:57:10,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 22:57:10,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 22:57:10,229 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 22:57:10,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 22:57:10,229 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 22:57:10,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 22:57:10,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 22:57:10,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 22:57:10,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 22:57:10,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 22:57:10,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 22:57:10,230 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 22:57:10,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 22:57:10,230 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 22:57:10,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 22:57:10,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 22:57:10,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 22:57:10,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 22:57:10,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 22:57:10,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:57:10,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 22:57:10,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 22:57:10,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 22:57:10,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 22:57:10,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 22:57:10,233 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 22:57:10,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 22:57:10,233 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 22:57:10,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 22:57:10,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 22:57:10,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 22:57:10,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-10 22:57:10,459 INFO L275 PluginConnector]: CDTParser initialized [2022-02-10 22:57:10,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2022-02-10 22:57:10,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e99544fc1/338463d27a9340a18cf19beaf9801a87/FLAG7c0aa8819 [2022-02-10 22:57:10,829 INFO L306 CDTParser]: Found 1 translation units. [2022-02-10 22:57:10,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2022-02-10 22:57:10,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e99544fc1/338463d27a9340a18cf19beaf9801a87/FLAG7c0aa8819 [2022-02-10 22:57:11,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e99544fc1/338463d27a9340a18cf19beaf9801a87 [2022-02-10 22:57:11,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 22:57:11,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-10 22:57:11,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-10 22:57:11,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-10 22:57:11,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-10 22:57:11,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:57:11" (1/1) ... [2022-02-10 22:57:11,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9466313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11, skipping insertion in model container [2022-02-10 22:57:11,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.02 10:57:11" (1/1) ... [2022-02-10 22:57:11,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-10 22:57:11,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-10 22:57:11,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2591,2604] [2022-02-10 22:57:11,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:57:11,461 INFO L203 MainTranslator]: Completed pre-run [2022-02-10 22:57:11,488 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2591,2604] [2022-02-10 22:57:11,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-10 22:57:11,499 INFO L208 MainTranslator]: Completed translation [2022-02-10 22:57:11,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11 WrapperNode [2022-02-10 22:57:11,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-10 22:57:11,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 22:57:11,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 22:57:11,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 22:57:11,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11" (1/1) ... [2022-02-10 22:57:11,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11" (1/1) ... [2022-02-10 22:57:11,537 INFO L137 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-02-10 22:57:11,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 22:57:11,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 22:57:11,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 22:57:11,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 22:57:11,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11" (1/1) ... [2022-02-10 22:57:11,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11" (1/1) ... [2022-02-10 22:57:11,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11" (1/1) ... [2022-02-10 22:57:11,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11" (1/1) ... [2022-02-10 22:57:11,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11" (1/1) ... [2022-02-10 22:57:11,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11" (1/1) ... [2022-02-10 22:57:11,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11" (1/1) ... [2022-02-10 22:57:11,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 22:57:11,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 22:57:11,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 22:57:11,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 22:57:11,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11" (1/1) ... [2022-02-10 22:57:11,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 22:57:11,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:11,593 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) [2022-02-10 22:57:11,615 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 [2022-02-10 22:57:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-10 22:57:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 22:57:11,620 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 22:57:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 22:57:11,620 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 22:57:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-10 22:57:11,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-10 22:57:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-10 22:57:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-10 22:57:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-10 22:57:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-10 22:57:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-10 22:57:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 22:57:11,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 22:57:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-10 22:57:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-10 22:57:11,622 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 22:57:11,684 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 22:57:11,685 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 22:57:11,822 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 22:57:11,852 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 22:57:11,852 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-10 22:57:11,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:57:11 BoogieIcfgContainer [2022-02-10 22:57:11,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 22:57:11,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 22:57:11,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 22:57:11,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 22:57:11,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.02 10:57:11" (1/3) ... [2022-02-10 22:57:11,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7083b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:57:11, skipping insertion in model container [2022-02-10 22:57:11,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.02 10:57:11" (2/3) ... [2022-02-10 22:57:11,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7083b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 10:57:11, skipping insertion in model container [2022-02-10 22:57:11,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 10:57:11" (3/3) ... [2022-02-10 22:57:11,868 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2022-02-10 22:57:11,872 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 22:57:11,872 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 22:57:11,872 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 22:57:11,872 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 22:57:11,896 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,897 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,897 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,898 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,898 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,898 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,898 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,898 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,898 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,899 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,899 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,899 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,899 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,899 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,900 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,900 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,900 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,900 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,901 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,901 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,901 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,901 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,901 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,902 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,902 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,902 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,902 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,903 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,903 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,904 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,904 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,904 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,904 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,904 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,906 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,907 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,907 WARN L322 ript$VariableManager]: TermVariable |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,907 WARN L322 ript$VariableManager]: TermVariable thread1Thread1of1ForFork0_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,908 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,908 WARN L322 ript$VariableManager]: TermVariable thread2Thread1of1ForFork1_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,908 WARN L322 ript$VariableManager]: TermVariable |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,908 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,908 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,909 WARN L322 ript$VariableManager]: TermVariable |thread3Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 22:57:11,912 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-10 22:57:11,944 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 22:57:11,950 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 22:57:11,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-10 22:57:11,966 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 97 transitions, 218 flow [2022-02-10 22:57:12,061 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1475 states, 1474 states have (on average 3.820217096336499) internal successors, (5631), 1474 states have internal predecessors, (5631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 1475 states, 1474 states have (on average 3.820217096336499) internal successors, (5631), 1474 states have internal predecessors, (5631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:57:12,090 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:12,090 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:12,091 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:12,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:12,099 INFO L85 PathProgramCache]: Analyzing trace with hash -602689982, now seen corresponding path program 1 times [2022-02-10 22:57:12,105 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:12,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116386968] [2022-02-10 22:57:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:12,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:12,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:12,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116386968] [2022-02-10 22:57:12,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116386968] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:12,258 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:12,259 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 22:57:12,260 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091491504] [2022-02-10 22:57:12,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:12,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-10 22:57:12,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:12,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-10 22:57:12,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-10 22:57:12,288 INFO L87 Difference]: Start difference. First operand has 1475 states, 1474 states have (on average 3.820217096336499) internal successors, (5631), 1474 states have internal predecessors, (5631), 0 states have call successors, (0), 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 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:12,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:12,346 INFO L93 Difference]: Finished difference Result 1475 states and 5025 transitions. [2022-02-10 22:57:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-10 22:57:12,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-02-10 22:57:12,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:12,374 INFO L225 Difference]: With dead ends: 1475 [2022-02-10 22:57:12,375 INFO L226 Difference]: Without dead ends: 1474 [2022-02-10 22:57:12,376 INFO L933 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 [2022-02-10 22:57:12,378 INFO L934 BasicCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:12,378 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:57:12,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-02-10 22:57:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2022-02-10 22:57:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.4107264086897486) internal successors, (5024), 1473 states have internal predecessors, (5024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5024 transitions. [2022-02-10 22:57:12,483 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5024 transitions. Word has length 70 [2022-02-10 22:57:12,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:12,483 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 5024 transitions. [2022-02-10 22:57:12,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.0) internal successors, (70), 2 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:12,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5024 transitions. [2022-02-10 22:57:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-10 22:57:12,488 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:12,488 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:12,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 22:57:12,489 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:12,489 INFO L85 PathProgramCache]: Analyzing trace with hash -160747741, now seen corresponding path program 1 times [2022-02-10 22:57:12,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:12,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055710126] [2022-02-10 22:57:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:12,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:12,756 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:12,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055710126] [2022-02-10 22:57:12,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055710126] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:12,757 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:12,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:57:12,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697333217] [2022-02-10 22:57:12,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:12,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:57:12,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:57:12,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:12,759 INFO L87 Difference]: Start difference. First operand 1474 states and 5024 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:12,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:12,876 INFO L93 Difference]: Finished difference Result 3359 states and 11654 transitions. [2022-02-10 22:57:12,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:12,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-02-10 22:57:12,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:12,896 INFO L225 Difference]: With dead ends: 3359 [2022-02-10 22:57:12,896 INFO L226 Difference]: Without dead ends: 3209 [2022-02-10 22:57:12,899 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 22:57:12,900 INFO L934 BasicCegarLoop]: 67 mSDtfsCounter, 98 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:12,901 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 278 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:12,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-02-10 22:57:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 1970. [2022-02-10 22:57:12,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1969 states have (on average 3.404773996952768) internal successors, (6704), 1969 states have internal predecessors, (6704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 6704 transitions. [2022-02-10 22:57:12,970 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 6704 transitions. Word has length 70 [2022-02-10 22:57:12,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:12,971 INFO L470 AbstractCegarLoop]: Abstraction has 1970 states and 6704 transitions. [2022-02-10 22:57:12,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 6704 transitions. [2022-02-10 22:57:12,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:57:12,979 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:12,979 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:12,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 22:57:12,980 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:12,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:12,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2065297183, now seen corresponding path program 1 times [2022-02-10 22:57:12,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:12,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038774109] [2022-02-10 22:57:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:12,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:13,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:13,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038774109] [2022-02-10 22:57:13,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038774109] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:13,209 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:13,209 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:57:13,209 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255012965] [2022-02-10 22:57:13,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:13,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:57:13,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:57:13,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:13,211 INFO L87 Difference]: Start difference. First operand 1970 states and 6704 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:13,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:13,371 INFO L93 Difference]: Finished difference Result 3094 states and 10204 transitions. [2022-02-10 22:57:13,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 22:57:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-02-10 22:57:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:13,386 INFO L225 Difference]: With dead ends: 3094 [2022-02-10 22:57:13,386 INFO L226 Difference]: Without dead ends: 2920 [2022-02-10 22:57:13,386 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:57:13,387 INFO L934 BasicCegarLoop]: 112 mSDtfsCounter, 150 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:13,387 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 400 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2022-02-10 22:57:13,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2407. [2022-02-10 22:57:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2406 states have (on average 3.353699085619285) internal successors, (8069), 2406 states have internal predecessors, (8069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:13,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 8069 transitions. [2022-02-10 22:57:13,471 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 8069 transitions. Word has length 72 [2022-02-10 22:57:13,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:13,472 INFO L470 AbstractCegarLoop]: Abstraction has 2407 states and 8069 transitions. [2022-02-10 22:57:13,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:13,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 8069 transitions. [2022-02-10 22:57:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:57:13,478 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:13,478 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:13,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 22:57:13,479 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:13,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:13,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1196970611, now seen corresponding path program 2 times [2022-02-10 22:57:13,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:13,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560137410] [2022-02-10 22:57:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:13,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:13,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:13,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:13,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560137410] [2022-02-10 22:57:13,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560137410] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:13,677 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:13,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 22:57:13,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053614118] [2022-02-10 22:57:13,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:13,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:57:13,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:57:13,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:13,680 INFO L87 Difference]: Start difference. First operand 2407 states and 8069 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:13,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:13,880 INFO L93 Difference]: Finished difference Result 4899 states and 16718 transitions. [2022-02-10 22:57:13,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 22:57:13,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-02-10 22:57:13,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:13,906 INFO L225 Difference]: With dead ends: 4899 [2022-02-10 22:57:13,907 INFO L226 Difference]: Without dead ends: 4899 [2022-02-10 22:57:13,907 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-02-10 22:57:13,914 INFO L934 BasicCegarLoop]: 121 mSDtfsCounter, 214 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:13,916 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 370 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:13,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2022-02-10 22:57:13,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 2427. [2022-02-10 22:57:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2426 states have (on average 3.395300906842539) internal successors, (8237), 2426 states have internal predecessors, (8237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 8237 transitions. [2022-02-10 22:57:13,997 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 8237 transitions. Word has length 72 [2022-02-10 22:57:13,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:13,998 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 8237 transitions. [2022-02-10 22:57:13,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:13,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 8237 transitions. [2022-02-10 22:57:14,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-02-10 22:57:14,005 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:14,005 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:14,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 22:57:14,006 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:14,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:14,006 INFO L85 PathProgramCache]: Analyzing trace with hash -115985947, now seen corresponding path program 3 times [2022-02-10 22:57:14,006 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:14,006 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445991857] [2022-02-10 22:57:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:14,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:14,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:14,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445991857] [2022-02-10 22:57:14,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445991857] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:14,136 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:14,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:14,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507628828] [2022-02-10 22:57:14,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:14,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:14,137 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:14,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:14,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:14,137 INFO L87 Difference]: Start difference. First operand 2427 states and 8237 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:14,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:14,218 INFO L93 Difference]: Finished difference Result 3469 states and 12077 transitions. [2022-02-10 22:57:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:14,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-02-10 22:57:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:14,245 INFO L225 Difference]: With dead ends: 3469 [2022-02-10 22:57:14,245 INFO L226 Difference]: Without dead ends: 3469 [2022-02-10 22:57:14,246 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:14,246 INFO L934 BasicCegarLoop]: 90 mSDtfsCounter, 59 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:14,246 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 256 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:14,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2022-02-10 22:57:14,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 2527. [2022-02-10 22:57:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2526 states have (on average 3.4093428345209817) internal successors, (8612), 2526 states have internal predecessors, (8612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 8612 transitions. [2022-02-10 22:57:14,314 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 8612 transitions. Word has length 72 [2022-02-10 22:57:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:14,314 INFO L470 AbstractCegarLoop]: Abstraction has 2527 states and 8612 transitions. [2022-02-10 22:57:14,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 8612 transitions. [2022-02-10 22:57:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-10 22:57:14,320 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:14,320 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:14,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-10 22:57:14,320 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:14,322 INFO L85 PathProgramCache]: Analyzing trace with hash -594145936, now seen corresponding path program 1 times [2022-02-10 22:57:14,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:14,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791354306] [2022-02-10 22:57:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:14,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:14,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:14,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791354306] [2022-02-10 22:57:14,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791354306] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:14,429 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:14,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:14,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7343957] [2022-02-10 22:57:14,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:14,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:14,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:14,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:14,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:14,431 INFO L87 Difference]: Start difference. First operand 2527 states and 8612 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:14,539 INFO L93 Difference]: Finished difference Result 4067 states and 13592 transitions. [2022-02-10 22:57:14,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:14,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-02-10 22:57:14,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:14,550 INFO L225 Difference]: With dead ends: 4067 [2022-02-10 22:57:14,551 INFO L226 Difference]: Without dead ends: 3893 [2022-02-10 22:57:14,551 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:57:14,553 INFO L934 BasicCegarLoop]: 124 mSDtfsCounter, 155 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:14,553 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 352 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2022-02-10 22:57:14,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 2917. [2022-02-10 22:57:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2916 states have (on average 3.4605624142661178) internal successors, (10091), 2916 states have internal predecessors, (10091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 10091 transitions. [2022-02-10 22:57:14,663 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 10091 transitions. Word has length 73 [2022-02-10 22:57:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:14,665 INFO L470 AbstractCegarLoop]: Abstraction has 2917 states and 10091 transitions. [2022-02-10 22:57:14,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:14,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 10091 transitions. [2022-02-10 22:57:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-10 22:57:14,679 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:14,679 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:14,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-10 22:57:14,680 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:14,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:14,680 INFO L85 PathProgramCache]: Analyzing trace with hash -285034558, now seen corresponding path program 1 times [2022-02-10 22:57:14,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:14,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898822970] [2022-02-10 22:57:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:14,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:14,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:14,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:14,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898822970] [2022-02-10 22:57:14,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898822970] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:14,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153023403] [2022-02-10 22:57:14,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:14,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:14,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:14,780 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) [2022-02-10 22:57:14,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 22:57:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:14,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 22:57:14,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:15,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:57:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:15,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153023403] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:57:15,715 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:57:15,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2022-02-10 22:57:15,715 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070145154] [2022-02-10 22:57:15,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:57:15,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 22:57:15,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:15,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 22:57:15,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-02-10 22:57:15,716 INFO L87 Difference]: Start difference. First operand 2917 states and 10091 transitions. Second operand has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:16,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:16,145 INFO L93 Difference]: Finished difference Result 6002 states and 20985 transitions. [2022-02-10 22:57:16,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 22:57:16,145 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 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 73 [2022-02-10 22:57:16,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:16,162 INFO L225 Difference]: With dead ends: 6002 [2022-02-10 22:57:16,162 INFO L226 Difference]: Without dead ends: 5594 [2022-02-10 22:57:16,162 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2022-02-10 22:57:16,163 INFO L934 BasicCegarLoop]: 108 mSDtfsCounter, 494 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:16,163 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 799 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 22:57:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5594 states. [2022-02-10 22:57:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5594 to 3568. [2022-02-10 22:57:16,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3568 states, 3567 states have (on average 3.581440986823661) internal successors, (12775), 3567 states have internal predecessors, (12775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 12775 transitions. [2022-02-10 22:57:16,275 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 12775 transitions. Word has length 73 [2022-02-10 22:57:16,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:16,275 INFO L470 AbstractCegarLoop]: Abstraction has 3568 states and 12775 transitions. [2022-02-10 22:57:16,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:16,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 12775 transitions. [2022-02-10 22:57:16,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-10 22:57:16,285 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:16,285 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:16,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:16,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:16,502 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1106737046, now seen corresponding path program 2 times [2022-02-10 22:57:16,503 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:16,503 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194976230] [2022-02-10 22:57:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:16,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:16,622 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:16,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194976230] [2022-02-10 22:57:16,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194976230] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:16,622 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:16,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:16,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731882411] [2022-02-10 22:57:16,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:16,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:16,623 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:16,623 INFO L87 Difference]: Start difference. First operand 3568 states and 12775 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:16,694 INFO L93 Difference]: Finished difference Result 5809 states and 20407 transitions. [2022-02-10 22:57:16,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 22:57:16,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-02-10 22:57:16,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:16,712 INFO L225 Difference]: With dead ends: 5809 [2022-02-10 22:57:16,712 INFO L226 Difference]: Without dead ends: 5809 [2022-02-10 22:57:16,712 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:16,713 INFO L934 BasicCegarLoop]: 132 mSDtfsCounter, 133 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:16,713 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 254 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:57:16,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2022-02-10 22:57:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 3716. [2022-02-10 22:57:16,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3716 states, 3715 states have (on average 3.6142664872139973) internal successors, (13427), 3715 states have internal predecessors, (13427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:16,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3716 states to 3716 states and 13427 transitions. [2022-02-10 22:57:16,813 INFO L78 Accepts]: Start accepts. Automaton has 3716 states and 13427 transitions. Word has length 73 [2022-02-10 22:57:16,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:16,813 INFO L470 AbstractCegarLoop]: Abstraction has 3716 states and 13427 transitions. [2022-02-10 22:57:16,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:16,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3716 states and 13427 transitions. [2022-02-10 22:57:16,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-10 22:57:16,822 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:16,822 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:16,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-10 22:57:16,822 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:16,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:16,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1878273170, now seen corresponding path program 3 times [2022-02-10 22:57:16,823 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:16,823 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798338122] [2022-02-10 22:57:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:16,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:16,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:16,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798338122] [2022-02-10 22:57:16,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798338122] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:16,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006055048] [2022-02-10 22:57:16,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:57:16,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:16,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:16,913 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) [2022-02-10 22:57:16,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 22:57:16,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:57:16,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:57:16,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:57:16,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:17,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 22:57:17,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006055048] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:17,257 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 22:57:17,257 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-02-10 22:57:17,258 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015878103] [2022-02-10 22:57:17,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:17,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:57:17,258 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:17,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:57:17,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-10 22:57:17,259 INFO L87 Difference]: Start difference. First operand 3716 states and 13427 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:17,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:17,542 INFO L93 Difference]: Finished difference Result 5087 states and 17673 transitions. [2022-02-10 22:57:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-10 22:57:17,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-02-10 22:57:17,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:17,556 INFO L225 Difference]: With dead ends: 5087 [2022-02-10 22:57:17,556 INFO L226 Difference]: Without dead ends: 4958 [2022-02-10 22:57:17,556 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:57:17,558 INFO L934 BasicCegarLoop]: 116 mSDtfsCounter, 157 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:17,558 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 471 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:17,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4958 states. [2022-02-10 22:57:17,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4958 to 3929. [2022-02-10 22:57:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3929 states, 3928 states have (on average 3.5819755600814664) internal successors, (14070), 3928 states have internal predecessors, (14070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3929 states to 3929 states and 14070 transitions. [2022-02-10 22:57:17,644 INFO L78 Accepts]: Start accepts. Automaton has 3929 states and 14070 transitions. Word has length 73 [2022-02-10 22:57:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:17,644 INFO L470 AbstractCegarLoop]: Abstraction has 3929 states and 14070 transitions. [2022-02-10 22:57:17,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3929 states and 14070 transitions. [2022-02-10 22:57:17,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-10 22:57:17,657 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:17,657 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:17,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:17,865 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,SelfDestructingSolverStorable8 [2022-02-10 22:57:17,865 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:17,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:17,866 INFO L85 PathProgramCache]: Analyzing trace with hash -674665910, now seen corresponding path program 4 times [2022-02-10 22:57:17,866 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:17,866 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981401951] [2022-02-10 22:57:17,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:17,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:17,964 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:17,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981401951] [2022-02-10 22:57:17,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981401951] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:17,965 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:17,965 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:17,965 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603919947] [2022-02-10 22:57:17,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:17,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:17,965 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:17,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:17,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:17,966 INFO L87 Difference]: Start difference. First operand 3929 states and 14070 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:18,079 INFO L93 Difference]: Finished difference Result 6171 states and 21471 transitions. [2022-02-10 22:57:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:18,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-02-10 22:57:18,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:18,095 INFO L225 Difference]: With dead ends: 6171 [2022-02-10 22:57:18,095 INFO L226 Difference]: Without dead ends: 6069 [2022-02-10 22:57:18,095 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:18,096 INFO L934 BasicCegarLoop]: 128 mSDtfsCounter, 120 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:18,097 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 338 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6069 states. [2022-02-10 22:57:18,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6069 to 3872. [2022-02-10 22:57:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3872 states, 3871 states have (on average 3.5920950658744513) internal successors, (13905), 3871 states have internal predecessors, (13905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:18,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 13905 transitions. [2022-02-10 22:57:18,213 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 13905 transitions. Word has length 73 [2022-02-10 22:57:18,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:18,213 INFO L470 AbstractCegarLoop]: Abstraction has 3872 states and 13905 transitions. [2022-02-10 22:57:18,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:18,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 13905 transitions. [2022-02-10 22:57:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-10 22:57:18,222 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:18,222 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:18,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-10 22:57:18,222 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:18,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:18,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1096125968, now seen corresponding path program 5 times [2022-02-10 22:57:18,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:18,223 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740002774] [2022-02-10 22:57:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:18,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:18,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:18,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740002774] [2022-02-10 22:57:18,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740002774] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:18,292 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:18,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:18,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651209098] [2022-02-10 22:57:18,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:18,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:18,292 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:18,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:18,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:18,293 INFO L87 Difference]: Start difference. First operand 3872 states and 13905 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:18,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:18,403 INFO L93 Difference]: Finished difference Result 5538 states and 19830 transitions. [2022-02-10 22:57:18,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:18,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-02-10 22:57:18,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:18,417 INFO L225 Difference]: With dead ends: 5538 [2022-02-10 22:57:18,417 INFO L226 Difference]: Without dead ends: 5538 [2022-02-10 22:57:18,417 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:57:18,418 INFO L934 BasicCegarLoop]: 113 mSDtfsCounter, 92 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:18,418 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 365 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:18,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5538 states. [2022-02-10 22:57:18,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5538 to 4134. [2022-02-10 22:57:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4134 states, 4133 states have (on average 3.607790950883136) internal successors, (14911), 4133 states have internal predecessors, (14911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4134 states to 4134 states and 14911 transitions. [2022-02-10 22:57:18,507 INFO L78 Accepts]: Start accepts. Automaton has 4134 states and 14911 transitions. Word has length 73 [2022-02-10 22:57:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:18,507 INFO L470 AbstractCegarLoop]: Abstraction has 4134 states and 14911 transitions. [2022-02-10 22:57:18,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4134 states and 14911 transitions. [2022-02-10 22:57:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-10 22:57:18,516 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:18,516 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:18,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-10 22:57:18,516 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:18,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:18,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1867662092, now seen corresponding path program 6 times [2022-02-10 22:57:18,517 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:18,517 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288906622] [2022-02-10 22:57:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:18,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:18,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:18,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288906622] [2022-02-10 22:57:18,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288906622] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:18,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689982769] [2022-02-10 22:57:18,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:57:18,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:18,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:18,594 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) [2022-02-10 22:57:18,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 22:57:18,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:57:18,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:57:18,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:57:18,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:18,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 22:57:18,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689982769] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:18,865 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 22:57:18,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-02-10 22:57:18,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725157152] [2022-02-10 22:57:18,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:18,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:57:18,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:57:18,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-02-10 22:57:18,867 INFO L87 Difference]: Start difference. First operand 4134 states and 14911 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:19,015 INFO L93 Difference]: Finished difference Result 4922 states and 17476 transitions. [2022-02-10 22:57:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 22:57:19,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-02-10 22:57:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:19,028 INFO L225 Difference]: With dead ends: 4922 [2022-02-10 22:57:19,028 INFO L226 Difference]: Without dead ends: 4805 [2022-02-10 22:57:19,029 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-02-10 22:57:19,029 INFO L934 BasicCegarLoop]: 109 mSDtfsCounter, 76 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:19,029 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 417 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:19,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2022-02-10 22:57:19,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 4113. [2022-02-10 22:57:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4113 states, 4112 states have (on average 3.6040856031128405) internal successors, (14820), 4112 states have internal predecessors, (14820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:19,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4113 states to 4113 states and 14820 transitions. [2022-02-10 22:57:19,107 INFO L78 Accepts]: Start accepts. Automaton has 4113 states and 14820 transitions. Word has length 73 [2022-02-10 22:57:19,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:19,107 INFO L470 AbstractCegarLoop]: Abstraction has 4113 states and 14820 transitions. [2022-02-10 22:57:19,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4113 states and 14820 transitions. [2022-02-10 22:57:19,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-10 22:57:19,115 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:19,115 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:19,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:19,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:19,332 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash -39266738, now seen corresponding path program 7 times [2022-02-10 22:57:19,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:19,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906053148] [2022-02-10 22:57:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:19,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:19,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:19,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906053148] [2022-02-10 22:57:19,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906053148] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:19,443 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:19,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:19,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889685287] [2022-02-10 22:57:19,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:19,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:19,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:19,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:19,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:19,446 INFO L87 Difference]: Start difference. First operand 4113 states and 14820 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:19,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:19,571 INFO L93 Difference]: Finished difference Result 6530 states and 22900 transitions. [2022-02-10 22:57:19,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:19,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-02-10 22:57:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:19,587 INFO L225 Difference]: With dead ends: 6530 [2022-02-10 22:57:19,587 INFO L226 Difference]: Without dead ends: 6452 [2022-02-10 22:57:19,587 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-02-10 22:57:19,588 INFO L934 BasicCegarLoop]: 129 mSDtfsCounter, 110 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:19,588 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 264 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:19,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2022-02-10 22:57:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 4132. [2022-02-10 22:57:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4132 states, 4131 states have (on average 3.633744855967078) internal successors, (15011), 4131 states have internal predecessors, (15011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 15011 transitions. [2022-02-10 22:57:19,696 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 15011 transitions. Word has length 73 [2022-02-10 22:57:19,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:19,696 INFO L470 AbstractCegarLoop]: Abstraction has 4132 states and 15011 transitions. [2022-02-10 22:57:19,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:19,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 15011 transitions. [2022-02-10 22:57:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-10 22:57:19,706 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:19,706 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:19,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-10 22:57:19,707 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash -562911770, now seen corresponding path program 8 times [2022-02-10 22:57:19,708 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:19,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339939437] [2022-02-10 22:57:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:19,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:19,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:19,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339939437] [2022-02-10 22:57:19,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339939437] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:19,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021753181] [2022-02-10 22:57:19,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:57:19,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:19,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:19,828 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) [2022-02-10 22:57:19,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 22:57:19,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:57:19,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:57:19,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 22:57:19,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:20,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:20,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-10 22:57:20,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021753181] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:20,195 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-10 22:57:20,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-02-10 22:57:20,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233666770] [2022-02-10 22:57:20,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:20,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 22:57:20,196 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:20,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 22:57:20,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-10 22:57:20,197 INFO L87 Difference]: Start difference. First operand 4132 states and 15011 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:20,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:20,393 INFO L93 Difference]: Finished difference Result 5079 states and 17997 transitions. [2022-02-10 22:57:20,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 22:57:20,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-02-10 22:57:20,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:20,409 INFO L225 Difference]: With dead ends: 5079 [2022-02-10 22:57:20,409 INFO L226 Difference]: Without dead ends: 5067 [2022-02-10 22:57:20,409 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-02-10 22:57:20,410 INFO L934 BasicCegarLoop]: 118 mSDtfsCounter, 154 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:20,410 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 364 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:20,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5067 states. [2022-02-10 22:57:20,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5067 to 4187. [2022-02-10 22:57:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4187 states, 4186 states have (on average 3.629479216435738) internal successors, (15193), 4186 states have internal predecessors, (15193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4187 states to 4187 states and 15193 transitions. [2022-02-10 22:57:20,516 INFO L78 Accepts]: Start accepts. Automaton has 4187 states and 15193 transitions. Word has length 73 [2022-02-10 22:57:20,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:20,517 INFO L470 AbstractCegarLoop]: Abstraction has 4187 states and 15193 transitions. [2022-02-10 22:57:20,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4187 states and 15193 transitions. [2022-02-10 22:57:20,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-10 22:57:20,527 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:20,527 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:20,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:20,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:20,748 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:20,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:20,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1828189768, now seen corresponding path program 9 times [2022-02-10 22:57:20,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:20,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286381465] [2022-02-10 22:57:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:20,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:20,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:20,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286381465] [2022-02-10 22:57:20,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286381465] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:20,825 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:20,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:20,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236367265] [2022-02-10 22:57:20,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:20,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:20,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:20,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:20,826 INFO L87 Difference]: Start difference. First operand 4187 states and 15193 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:20,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:20,941 INFO L93 Difference]: Finished difference Result 5165 states and 18321 transitions. [2022-02-10 22:57:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:20,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-02-10 22:57:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:20,954 INFO L225 Difference]: With dead ends: 5165 [2022-02-10 22:57:20,954 INFO L226 Difference]: Without dead ends: 5141 [2022-02-10 22:57:20,954 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:57:20,955 INFO L934 BasicCegarLoop]: 104 mSDtfsCounter, 92 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:20,955 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 320 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 22:57:20,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5141 states. [2022-02-10 22:57:21,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5141 to 4187. [2022-02-10 22:57:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4187 states, 4186 states have (on average 3.628523650262781) internal successors, (15189), 4186 states have internal predecessors, (15189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4187 states to 4187 states and 15189 transitions. [2022-02-10 22:57:21,036 INFO L78 Accepts]: Start accepts. Automaton has 4187 states and 15189 transitions. Word has length 73 [2022-02-10 22:57:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:21,036 INFO L470 AbstractCegarLoop]: Abstraction has 4187 states and 15189 transitions. [2022-02-10 22:57:21,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:21,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4187 states and 15189 transitions. [2022-02-10 22:57:21,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-02-10 22:57:21,044 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:21,044 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:21,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-10 22:57:21,045 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:21,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:21,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2120367416, now seen corresponding path program 10 times [2022-02-10 22:57:21,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:21,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929619736] [2022-02-10 22:57:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:21,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:21,085 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:21,085 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929619736] [2022-02-10 22:57:21,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929619736] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 22:57:21,085 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 22:57:21,085 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 22:57:21,085 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369228022] [2022-02-10 22:57:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 22:57:21,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 22:57:21,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:21,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 22:57:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 22:57:21,086 INFO L87 Difference]: Start difference. First operand 4187 states and 15189 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:21,155 INFO L93 Difference]: Finished difference Result 4127 states and 14970 transitions. [2022-02-10 22:57:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 22:57:21,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-02-10 22:57:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:21,166 INFO L225 Difference]: With dead ends: 4127 [2022-02-10 22:57:21,166 INFO L226 Difference]: Without dead ends: 4091 [2022-02-10 22:57:21,166 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 22:57:21,167 INFO L934 BasicCegarLoop]: 73 mSDtfsCounter, 37 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:21,167 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 240 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 22:57:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2022-02-10 22:57:21,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 3935. [2022-02-10 22:57:21,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3935 states, 3934 states have (on average 3.647178444331469) internal successors, (14348), 3934 states have internal predecessors, (14348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3935 states to 3935 states and 14348 transitions. [2022-02-10 22:57:21,293 INFO L78 Accepts]: Start accepts. Automaton has 3935 states and 14348 transitions. Word has length 73 [2022-02-10 22:57:21,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:21,293 INFO L470 AbstractCegarLoop]: Abstraction has 3935 states and 14348 transitions. [2022-02-10 22:57:21,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3935 states and 14348 transitions. [2022-02-10 22:57:21,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:57:21,300 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:21,300 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:21,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-10 22:57:21,301 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:21,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:21,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1245844032, now seen corresponding path program 1 times [2022-02-10 22:57:21,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:21,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964607744] [2022-02-10 22:57:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:21,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:21,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:21,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964607744] [2022-02-10 22:57:21,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964607744] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:21,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23508599] [2022-02-10 22:57:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:21,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:21,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:21,438 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) [2022-02-10 22:57:21,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 22:57:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:21,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 22:57:21,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:21,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:57:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:27,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23508599] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:57:27,157 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:57:27,157 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-02-10 22:57:27,157 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029433830] [2022-02-10 22:57:27,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:57:27,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:57:27,157 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:27,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:57:27,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=265, Unknown=2, NotChecked=0, Total=342 [2022-02-10 22:57:27,158 INFO L87 Difference]: Start difference. First operand 3935 states and 14348 transitions. Second operand has 19 states, 19 states have (on average 9.473684210526315) internal successors, (180), 19 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:27,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:27,497 INFO L93 Difference]: Finished difference Result 6940 states and 24919 transitions. [2022-02-10 22:57:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 22:57:27,497 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.473684210526315) internal successors, (180), 19 states have internal predecessors, (180), 0 states have call successors, (0), 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 [2022-02-10 22:57:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:27,514 INFO L225 Difference]: With dead ends: 6940 [2022-02-10 22:57:27,514 INFO L226 Difference]: Without dead ends: 6700 [2022-02-10 22:57:27,515 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=147, Invalid=501, Unknown=2, NotChecked=0, Total=650 [2022-02-10 22:57:27,516 INFO L934 BasicCegarLoop]: 152 mSDtfsCounter, 328 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:27,517 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 1274 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 305 Invalid, 0 Unknown, 137 Unchecked, 0.2s Time] [2022-02-10 22:57:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2022-02-10 22:57:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 4648. [2022-02-10 22:57:27,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4647 states have (on average 3.641704325371207) internal successors, (16923), 4647 states have internal predecessors, (16923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:27,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 16923 transitions. [2022-02-10 22:57:27,622 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 16923 transitions. Word has length 75 [2022-02-10 22:57:27,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:27,623 INFO L470 AbstractCegarLoop]: Abstraction has 4648 states and 16923 transitions. [2022-02-10 22:57:27,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.473684210526315) internal successors, (180), 19 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:27,623 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 16923 transitions. [2022-02-10 22:57:27,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:57:27,632 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:27,632 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:27,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-02-10 22:57:27,847 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,SelfDestructingSolverStorable16 [2022-02-10 22:57:27,848 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:27,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:27,848 INFO L85 PathProgramCache]: Analyzing trace with hash 479394602, now seen corresponding path program 2 times [2022-02-10 22:57:27,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:27,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408091720] [2022-02-10 22:57:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:27,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:27,981 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:27,981 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408091720] [2022-02-10 22:57:27,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408091720] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:27,982 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259972267] [2022-02-10 22:57:27,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:57:27,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:27,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:27,983 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) [2022-02-10 22:57:27,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 22:57:28,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:57:28,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:57:28,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 22:57:28,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:28,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:57:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:29,072 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259972267] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:57:29,072 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:57:29,072 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 17 [2022-02-10 22:57:29,073 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554794970] [2022-02-10 22:57:29,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:57:29,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 22:57:29,073 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 22:57:29,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-02-10 22:57:29,075 INFO L87 Difference]: Start difference. First operand 4648 states and 16923 transitions. Second operand has 17 states, 17 states have (on average 10.411764705882353) internal successors, (177), 17 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:29,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:29,380 INFO L93 Difference]: Finished difference Result 6430 states and 23531 transitions. [2022-02-10 22:57:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 22:57:29,380 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.411764705882353) internal successors, (177), 17 states have internal predecessors, (177), 0 states have call successors, (0), 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 [2022-02-10 22:57:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:29,451 INFO L225 Difference]: With dead ends: 6430 [2022-02-10 22:57:29,451 INFO L226 Difference]: Without dead ends: 6190 [2022-02-10 22:57:29,451 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:57:29,452 INFO L934 BasicCegarLoop]: 120 mSDtfsCounter, 231 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:29,452 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 1022 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 284 Invalid, 0 Unknown, 57 Unchecked, 0.2s Time] [2022-02-10 22:57:29,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6190 states. [2022-02-10 22:57:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6190 to 4888. [2022-02-10 22:57:29,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4888 states, 4887 states have (on average 3.6470227133210558) internal successors, (17823), 4887 states have internal predecessors, (17823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 17823 transitions. [2022-02-10 22:57:29,541 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 17823 transitions. Word has length 75 [2022-02-10 22:57:29,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:29,541 INFO L470 AbstractCegarLoop]: Abstraction has 4888 states and 17823 transitions. [2022-02-10 22:57:29,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.411764705882353) internal successors, (177), 17 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:29,541 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 17823 transitions. [2022-02-10 22:57:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:57:29,550 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:29,551 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:29,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:29,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-10 22:57:29,768 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:29,769 INFO L85 PathProgramCache]: Analyzing trace with hash -366423954, now seen corresponding path program 1 times [2022-02-10 22:57:29,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:29,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333958527] [2022-02-10 22:57:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:29,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:29,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333958527] [2022-02-10 22:57:29,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333958527] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:29,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680951652] [2022-02-10 22:57:29,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:29,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:29,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:29,859 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) [2022-02-10 22:57:29,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 22:57:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:29,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 22:57:29,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:30,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:57:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:30,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680951652] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:57:30,625 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:57:30,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 10] total 21 [2022-02-10 22:57:30,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654775319] [2022-02-10 22:57:30,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:57:30,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:57:30,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:30,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:57:30,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:57:30,627 INFO L87 Difference]: Start difference. First operand 4888 states and 17823 transitions. Second operand has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:33,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:33,151 INFO L93 Difference]: Finished difference Result 13039 states and 46376 transitions. [2022-02-10 22:57:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 22:57:33,152 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 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 [2022-02-10 22:57:33,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:33,182 INFO L225 Difference]: With dead ends: 13039 [2022-02-10 22:57:33,183 INFO L226 Difference]: Without dead ends: 13039 [2022-02-10 22:57:33,184 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1565 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1117, Invalid=2915, Unknown=0, NotChecked=0, Total=4032 [2022-02-10 22:57:33,184 INFO L934 BasicCegarLoop]: 204 mSDtfsCounter, 925 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:33,184 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [925 Valid, 1673 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-10 22:57:33,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13039 states. [2022-02-10 22:57:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13039 to 5937. [2022-02-10 22:57:33,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5937 states, 5936 states have (on average 3.625) internal successors, (21518), 5936 states have internal predecessors, (21518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5937 states to 5937 states and 21518 transitions. [2022-02-10 22:57:33,324 INFO L78 Accepts]: Start accepts. Automaton has 5937 states and 21518 transitions. Word has length 75 [2022-02-10 22:57:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:33,325 INFO L470 AbstractCegarLoop]: Abstraction has 5937 states and 21518 transitions. [2022-02-10 22:57:33,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:33,325 INFO L276 IsEmpty]: Start isEmpty. Operand 5937 states and 21518 transitions. [2022-02-10 22:57:33,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:57:33,335 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:33,335 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:33,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:33,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:33,535 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:33,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:33,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1735385766, now seen corresponding path program 2 times [2022-02-10 22:57:33,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:33,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86180280] [2022-02-10 22:57:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:33,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:33,653 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:33,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86180280] [2022-02-10 22:57:33,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86180280] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:33,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418730314] [2022-02-10 22:57:33,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:57:33,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:33,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:33,659 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) [2022-02-10 22:57:33,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 22:57:33,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:57:33,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:57:33,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 22:57:33,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:34,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:57:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:34,751 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418730314] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:57:34,751 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:57:34,752 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 21 [2022-02-10 22:57:34,752 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409677446] [2022-02-10 22:57:34,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:57:34,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-10 22:57:34,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:34,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-10 22:57:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-02-10 22:57:34,754 INFO L87 Difference]: Start difference. First operand 5937 states and 21518 transitions. Second operand has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:41,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:41,113 INFO L93 Difference]: Finished difference Result 37646 states and 134824 transitions. [2022-02-10 22:57:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-10 22:57:41,114 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 states have internal predecessors, (116), 0 states have call successors, (0), 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 [2022-02-10 22:57:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:41,214 INFO L225 Difference]: With dead ends: 37646 [2022-02-10 22:57:41,215 INFO L226 Difference]: Without dead ends: 37646 [2022-02-10 22:57:41,217 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4054 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2523, Invalid=8607, Unknown=0, NotChecked=0, Total=11130 [2022-02-10 22:57:41,218 INFO L934 BasicCegarLoop]: 351 mSDtfsCounter, 1602 mSDsluCounter, 3284 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 3305 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:41,218 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 3305 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-10 22:57:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37646 states. [2022-02-10 22:57:41,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37646 to 7412. [2022-02-10 22:57:41,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 7411 states have (on average 3.770206449871812) internal successors, (27941), 7411 states have internal predecessors, (27941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 27941 transitions. [2022-02-10 22:57:41,657 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 27941 transitions. Word has length 75 [2022-02-10 22:57:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:41,657 INFO L470 AbstractCegarLoop]: Abstraction has 7412 states and 27941 transitions. [2022-02-10 22:57:41,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.523809523809524) internal successors, (116), 21 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 27941 transitions. [2022-02-10 22:57:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:57:41,670 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:41,671 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:41,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:41,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:41,872 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:41,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1423219130, now seen corresponding path program 3 times [2022-02-10 22:57:41,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:41,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561898121] [2022-02-10 22:57:41,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:41,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:42,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:42,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561898121] [2022-02-10 22:57:42,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561898121] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:42,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163459442] [2022-02-10 22:57:42,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:57:42,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:42,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:42,005 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) [2022-02-10 22:57:42,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 22:57:42,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 22:57:42,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:57:42,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 22:57:42,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:42,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:57:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:42,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163459442] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:57:42,824 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:57:42,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 10] total 17 [2022-02-10 22:57:42,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902174175] [2022-02-10 22:57:42,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:57:42,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 22:57:42,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 22:57:42,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-02-10 22:57:42,825 INFO L87 Difference]: Start difference. First operand 7412 states and 27941 transitions. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:46,145 INFO L93 Difference]: Finished difference Result 25039 states and 90896 transitions. [2022-02-10 22:57:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-02-10 22:57:46,145 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 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 [2022-02-10 22:57:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:46,276 INFO L225 Difference]: With dead ends: 25039 [2022-02-10 22:57:46,276 INFO L226 Difference]: Without dead ends: 24850 [2022-02-10 22:57:46,277 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1233, Invalid=4317, Unknown=0, NotChecked=0, Total=5550 [2022-02-10 22:57:46,278 INFO L934 BasicCegarLoop]: 258 mSDtfsCounter, 1147 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:46,278 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1147 Valid, 1964 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 22:57:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24850 states. [2022-02-10 22:57:46,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24850 to 8604. [2022-02-10 22:57:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8604 states, 8603 states have (on average 3.773451121701732) internal successors, (32463), 8603 states have internal predecessors, (32463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8604 states to 8604 states and 32463 transitions. [2022-02-10 22:57:46,530 INFO L78 Accepts]: Start accepts. Automaton has 8604 states and 32463 transitions. Word has length 75 [2022-02-10 22:57:46,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:46,531 INFO L470 AbstractCegarLoop]: Abstraction has 8604 states and 32463 transitions. [2022-02-10 22:57:46,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:46,531 INFO L276 IsEmpty]: Start isEmpty. Operand 8604 states and 32463 transitions. [2022-02-10 22:57:46,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-10 22:57:46,546 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:46,546 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:46,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:46,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:46,748 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:46,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:46,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2112510834, now seen corresponding path program 4 times [2022-02-10 22:57:46,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:46,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999594689] [2022-02-10 22:57:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:46,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:46,859 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:46,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999594689] [2022-02-10 22:57:46,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999594689] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:46,859 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929251542] [2022-02-10 22:57:46,859 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:57:46,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:46,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:46,861 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) [2022-02-10 22:57:46,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 22:57:46,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:57:46,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:57:46,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-10 22:57:46,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:47,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:57:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:47,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929251542] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:57:47,658 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:57:47,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 22 [2022-02-10 22:57:47,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927898862] [2022-02-10 22:57:47,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:57:47,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:57:47,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:47,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:57:47,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:57:47,659 INFO L87 Difference]: Start difference. First operand 8604 states and 32463 transitions. Second operand has 22 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:55,062 INFO L93 Difference]: Finished difference Result 54139 states and 197203 transitions. [2022-02-10 22:57:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-02-10 22:57:55,063 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 0 states have call successors, (0), 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 [2022-02-10 22:57:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:55,252 INFO L225 Difference]: With dead ends: 54139 [2022-02-10 22:57:55,253 INFO L226 Difference]: Without dead ends: 54139 [2022-02-10 22:57:55,256 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8134 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3848, Invalid=15334, Unknown=0, NotChecked=0, Total=19182 [2022-02-10 22:57:55,256 INFO L934 BasicCegarLoop]: 445 mSDtfsCounter, 1984 mSDsluCounter, 3904 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1984 SdHoareTripleChecker+Valid, 3932 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:55,256 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1984 Valid, 3932 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-10 22:57:55,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54139 states. [2022-02-10 22:57:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54139 to 11943. [2022-02-10 22:57:56,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11943 states, 11942 states have (on average 3.953022944230447) internal successors, (47207), 11942 states have internal predecessors, (47207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11943 states to 11943 states and 47207 transitions. [2022-02-10 22:57:56,115 INFO L78 Accepts]: Start accepts. Automaton has 11943 states and 47207 transitions. Word has length 75 [2022-02-10 22:57:56,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:56,115 INFO L470 AbstractCegarLoop]: Abstraction has 11943 states and 47207 transitions. [2022-02-10 22:57:56,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 11943 states and 47207 transitions. [2022-02-10 22:57:56,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 22:57:56,138 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:56,138 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:56,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:56,339 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,SelfDestructingSolverStorable21 [2022-02-10 22:57:56,339 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:56,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:56,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1165779906, now seen corresponding path program 3 times [2022-02-10 22:57:56,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:56,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549947779] [2022-02-10 22:57:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:56,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:56,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:56,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549947779] [2022-02-10 22:57:56,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549947779] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:56,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629333397] [2022-02-10 22:57:56,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:57:56,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:56,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:56,488 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) [2022-02-10 22:57:56,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 22:57:56,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:57:56,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:57:56,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 22:57:56,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:56,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:57:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:57,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629333397] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:57:57,356 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:57:57,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 19 [2022-02-10 22:57:57,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73131896] [2022-02-10 22:57:57,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:57:57,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:57:57,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:57:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:57:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:57:57,357 INFO L87 Difference]: Start difference. First operand 11943 states and 47207 transitions. Second operand has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:57:58,493 INFO L93 Difference]: Finished difference Result 24474 states and 92775 transitions. [2022-02-10 22:57:58,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-10 22:57:58,493 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 0 states have call successors, (0), 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 77 [2022-02-10 22:57:58,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:57:58,564 INFO L225 Difference]: With dead ends: 24474 [2022-02-10 22:57:58,564 INFO L226 Difference]: Without dead ends: 22980 [2022-02-10 22:57:58,564 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 141 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2022-02-10 22:57:58,565 INFO L934 BasicCegarLoop]: 206 mSDtfsCounter, 729 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:57:58,565 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 1912 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-10 22:57:58,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22980 states. [2022-02-10 22:57:58,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22980 to 14942. [2022-02-10 22:57:58,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14942 states, 14941 states have (on average 3.9332039354795527) internal successors, (58766), 14941 states have internal predecessors, (58766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14942 states to 14942 states and 58766 transitions. [2022-02-10 22:57:59,028 INFO L78 Accepts]: Start accepts. Automaton has 14942 states and 58766 transitions. Word has length 77 [2022-02-10 22:57:59,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:57:59,028 INFO L470 AbstractCegarLoop]: Abstraction has 14942 states and 58766 transitions. [2022-02-10 22:57:59,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:57:59,028 INFO L276 IsEmpty]: Start isEmpty. Operand 14942 states and 58766 transitions. [2022-02-10 22:57:59,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 22:57:59,061 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:57:59,061 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:57:59,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 22:57:59,287 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,SelfDestructingSolverStorable22 [2022-02-10 22:57:59,287 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:57:59,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:57:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1635417480, now seen corresponding path program 4 times [2022-02-10 22:57:59,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:57:59,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294003972] [2022-02-10 22:57:59,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:57:59,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:57:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:57:59,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:59,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:57:59,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294003972] [2022-02-10 22:57:59,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294003972] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:57:59,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586897450] [2022-02-10 22:57:59,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:57:59,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:57:59,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:57:59,511 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) [2022-02-10 22:57:59,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 22:57:59,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:57:59,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:57:59,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 22:57:59,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:57:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:57:59,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:00,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586897450] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:00,407 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:00,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 23 [2022-02-10 22:58:00,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550860643] [2022-02-10 22:58:00,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:00,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 22:58:00,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:00,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 22:58:00,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2022-02-10 22:58:00,408 INFO L87 Difference]: Start difference. First operand 14942 states and 58766 transitions. Second operand has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 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) [2022-02-10 22:58:02,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:02,929 INFO L93 Difference]: Finished difference Result 42621 states and 163228 transitions. [2022-02-10 22:58:02,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 22:58:02,930 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 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 77 [2022-02-10 22:58:02,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:03,078 INFO L225 Difference]: With dead ends: 42621 [2022-02-10 22:58:03,078 INFO L226 Difference]: Without dead ends: 42621 [2022-02-10 22:58:03,079 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 139 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1403 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1042, Invalid=3514, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 22:58:03,080 INFO L934 BasicCegarLoop]: 224 mSDtfsCounter, 1222 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:03,080 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 2333 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-10 22:58:03,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42621 states. [2022-02-10 22:58:03,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42621 to 17418. [2022-02-10 22:58:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17418 states, 17417 states have (on average 3.9850146408681173) internal successors, (69407), 17417 states have internal predecessors, (69407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17418 states to 17418 states and 69407 transitions. [2022-02-10 22:58:03,851 INFO L78 Accepts]: Start accepts. Automaton has 17418 states and 69407 transitions. Word has length 77 [2022-02-10 22:58:03,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:03,851 INFO L470 AbstractCegarLoop]: Abstraction has 17418 states and 69407 transitions. [2022-02-10 22:58:03,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 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) [2022-02-10 22:58:03,851 INFO L276 IsEmpty]: Start isEmpty. Operand 17418 states and 69407 transitions. [2022-02-10 22:58:03,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 22:58:03,889 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:03,889 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:03,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-02-10 22:58:04,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-02-10 22:58:04,096 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:58:04,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:04,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1885844624, now seen corresponding path program 5 times [2022-02-10 22:58:04,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:04,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425663456] [2022-02-10 22:58:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:04,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:04,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:04,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425663456] [2022-02-10 22:58:04,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425663456] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:04,253 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906710409] [2022-02-10 22:58:04,253 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:58:04,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:04,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:04,256 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) [2022-02-10 22:58:04,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 22:58:04,329 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:58:04,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:58:04,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 22:58:04,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:04,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:05,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906710409] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:05,258 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:05,258 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2022-02-10 22:58:05,259 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998180185] [2022-02-10 22:58:05,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:05,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:58:05,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:05,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:58:05,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:58:05,260 INFO L87 Difference]: Start difference. First operand 17418 states and 69407 transitions. Second operand has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:08,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:08,053 INFO L93 Difference]: Finished difference Result 33027 states and 126314 transitions. [2022-02-10 22:58:08,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 22:58:08,054 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 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 77 [2022-02-10 22:58:08,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:08,317 INFO L225 Difference]: With dead ends: 33027 [2022-02-10 22:58:08,317 INFO L226 Difference]: Without dead ends: 32124 [2022-02-10 22:58:08,318 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=731, Invalid=2691, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 22:58:08,319 INFO L934 BasicCegarLoop]: 264 mSDtfsCounter, 944 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:08,319 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [944 Valid, 2629 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 22:58:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32124 states. [2022-02-10 22:58:08,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32124 to 19676. [2022-02-10 22:58:08,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19676 states, 19675 states have (on average 3.9626937738246504) internal successors, (77966), 19675 states have internal predecessors, (77966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19676 states to 19676 states and 77966 transitions. [2022-02-10 22:58:08,943 INFO L78 Accepts]: Start accepts. Automaton has 19676 states and 77966 transitions. Word has length 77 [2022-02-10 22:58:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:08,943 INFO L470 AbstractCegarLoop]: Abstraction has 19676 states and 77966 transitions. [2022-02-10 22:58:08,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 19676 states and 77966 transitions. [2022-02-10 22:58:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 22:58:09,002 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:09,002 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:09,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 22:58:09,215 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,SelfDestructingSolverStorable24 [2022-02-10 22:58:09,216 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:58:09,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:09,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2127423414, now seen corresponding path program 6 times [2022-02-10 22:58:09,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:09,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287267152] [2022-02-10 22:58:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:09,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:09,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:09,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287267152] [2022-02-10 22:58:09,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287267152] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:09,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229811087] [2022-02-10 22:58:09,369 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:58:09,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:09,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:09,371 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) [2022-02-10 22:58:09,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 22:58:09,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 22:58:09,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:58:09,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-10 22:58:09,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:09,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:10,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229811087] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:10,450 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:10,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2022-02-10 22:58:10,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906635206] [2022-02-10 22:58:10,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:10,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-10 22:58:10,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:10,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-10 22:58:10,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2022-02-10 22:58:10,452 INFO L87 Difference]: Start difference. First operand 19676 states and 77966 transitions. Second operand has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:13,395 INFO L93 Difference]: Finished difference Result 40654 states and 154611 transitions. [2022-02-10 22:58:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-10 22:58:13,396 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 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 77 [2022-02-10 22:58:13,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:13,657 INFO L225 Difference]: With dead ends: 40654 [2022-02-10 22:58:13,657 INFO L226 Difference]: Without dead ends: 40654 [2022-02-10 22:58:13,658 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 142 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=870, Invalid=4100, Unknown=0, NotChecked=0, Total=4970 [2022-02-10 22:58:13,658 INFO L934 BasicCegarLoop]: 318 mSDtfsCounter, 750 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 493 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:13,659 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 2141 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 893 Invalid, 0 Unknown, 493 Unchecked, 0.7s Time] [2022-02-10 22:58:13,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40654 states. [2022-02-10 22:58:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40654 to 21344. [2022-02-10 22:58:14,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21344 states, 21343 states have (on average 3.953567914538725) internal successors, (84381), 21343 states have internal predecessors, (84381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:14,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21344 states to 21344 states and 84381 transitions. [2022-02-10 22:58:14,488 INFO L78 Accepts]: Start accepts. Automaton has 21344 states and 84381 transitions. Word has length 77 [2022-02-10 22:58:14,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:14,489 INFO L470 AbstractCegarLoop]: Abstraction has 21344 states and 84381 transitions. [2022-02-10 22:58:14,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:14,489 INFO L276 IsEmpty]: Start isEmpty. Operand 21344 states and 84381 transitions. [2022-02-10 22:58:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 22:58:14,534 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:14,534 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:14,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 22:58:14,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:14,735 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:58:14,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1549761106, now seen corresponding path program 7 times [2022-02-10 22:58:14,736 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:14,736 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164090146] [2022-02-10 22:58:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:14,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:14,890 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:14,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164090146] [2022-02-10 22:58:14,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164090146] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:14,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65410938] [2022-02-10 22:58:14,891 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:58:14,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:14,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:14,892 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) [2022-02-10 22:58:14,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 22:58:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:14,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 22:58:14,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:15,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:15,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:15,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65410938] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:15,963 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:15,964 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 22 [2022-02-10 22:58:15,964 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615075470] [2022-02-10 22:58:15,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:15,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:58:15,964 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:15,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:58:15,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-02-10 22:58:15,965 INFO L87 Difference]: Start difference. First operand 21344 states and 84381 transitions. Second operand has 22 states, 22 states have (on average 6.045454545454546) internal successors, (133), 22 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:19,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:19,188 INFO L93 Difference]: Finished difference Result 41526 states and 158761 transitions. [2022-02-10 22:58:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 22:58:19,189 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.045454545454546) internal successors, (133), 22 states have internal predecessors, (133), 0 states have call successors, (0), 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 77 [2022-02-10 22:58:19,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:19,315 INFO L225 Difference]: With dead ends: 41526 [2022-02-10 22:58:19,315 INFO L226 Difference]: Without dead ends: 41526 [2022-02-10 22:58:19,316 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 138 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1108, Invalid=4442, Unknown=0, NotChecked=0, Total=5550 [2022-02-10 22:58:19,317 INFO L934 BasicCegarLoop]: 262 mSDtfsCounter, 536 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 483 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:19,317 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 3001 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1245 Invalid, 0 Unknown, 483 Unchecked, 0.9s Time] [2022-02-10 22:58:19,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41526 states. [2022-02-10 22:58:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41526 to 22140. [2022-02-10 22:58:20,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22140 states, 22139 states have (on average 3.9597994489362662) internal successors, (87666), 22139 states have internal predecessors, (87666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22140 states to 22140 states and 87666 transitions. [2022-02-10 22:58:20,339 INFO L78 Accepts]: Start accepts. Automaton has 22140 states and 87666 transitions. Word has length 77 [2022-02-10 22:58:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:20,339 INFO L470 AbstractCegarLoop]: Abstraction has 22140 states and 87666 transitions. [2022-02-10 22:58:20,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.045454545454546) internal successors, (133), 22 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 22140 states and 87666 transitions. [2022-02-10 22:58:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 22:58:20,405 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:20,405 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:20,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-10 22:58:20,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-10 22:58:20,607 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:58:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2143325036, now seen corresponding path program 5 times [2022-02-10 22:58:20,608 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:20,608 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191318760] [2022-02-10 22:58:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:20,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:20,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:20,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191318760] [2022-02-10 22:58:20,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191318760] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:20,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710070277] [2022-02-10 22:58:20,764 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 22:58:20,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:20,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:20,765 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) [2022-02-10 22:58:20,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 22:58:20,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 22:58:20,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:58:20,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 22:58:20,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:21,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:26,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710070277] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:26,200 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:26,200 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 28 [2022-02-10 22:58:26,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44581177] [2022-02-10 22:58:26,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:26,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-02-10 22:58:26,200 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:26,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-02-10 22:58:26,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2022-02-10 22:58:26,201 INFO L87 Difference]: Start difference. First operand 22140 states and 87666 transitions. Second operand has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 28 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:27,319 INFO L93 Difference]: Finished difference Result 27992 states and 109278 transitions. [2022-02-10 22:58:27,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 22:58:27,320 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 28 states have internal predecessors, (186), 0 states have call successors, (0), 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 77 [2022-02-10 22:58:27,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:27,417 INFO L225 Difference]: With dead ends: 27992 [2022-02-10 22:58:27,418 INFO L226 Difference]: Without dead ends: 27752 [2022-02-10 22:58:27,418 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=232, Invalid=1250, Unknown=0, NotChecked=0, Total=1482 [2022-02-10 22:58:27,418 INFO L934 BasicCegarLoop]: 185 mSDtfsCounter, 480 mSDsluCounter, 2863 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 240 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:27,418 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 2769 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 905 Invalid, 0 Unknown, 240 Unchecked, 0.6s Time] [2022-02-10 22:58:27,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27752 states. [2022-02-10 22:58:28,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27752 to 22578. [2022-02-10 22:58:28,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22578 states, 22577 states have (on average 3.956770164326527) internal successors, (89332), 22577 states have internal predecessors, (89332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:28,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22578 states to 22578 states and 89332 transitions. [2022-02-10 22:58:28,145 INFO L78 Accepts]: Start accepts. Automaton has 22578 states and 89332 transitions. Word has length 77 [2022-02-10 22:58:28,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:28,146 INFO L470 AbstractCegarLoop]: Abstraction has 22578 states and 89332 transitions. [2022-02-10 22:58:28,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.642857142857143) internal successors, (186), 28 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:28,146 INFO L276 IsEmpty]: Start isEmpty. Operand 22578 states and 89332 transitions. [2022-02-10 22:58:28,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 22:58:28,207 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:28,207 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:28,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 22:58:28,415 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,SelfDestructingSolverStorable27 [2022-02-10 22:58:28,416 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:58:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash 275989438, now seen corresponding path program 6 times [2022-02-10 22:58:28,416 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:28,416 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069874692] [2022-02-10 22:58:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:28,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:28,580 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:28,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069874692] [2022-02-10 22:58:28,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069874692] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:28,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988461691] [2022-02-10 22:58:28,580 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 22:58:28,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:28,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:28,581 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) [2022-02-10 22:58:28,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 22:58:28,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 22:58:28,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:58:28,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:58:28,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:29,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:37,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988461691] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:37,251 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:37,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 24 [2022-02-10 22:58:37,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72792793] [2022-02-10 22:58:37,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:37,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 22:58:37,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:37,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 22:58:37,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=448, Unknown=1, NotChecked=0, Total=552 [2022-02-10 22:58:37,253 INFO L87 Difference]: Start difference. First operand 22578 states and 89332 transitions. Second operand has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:38,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:38,186 INFO L93 Difference]: Finished difference Result 28598 states and 112223 transitions. [2022-02-10 22:58:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 22:58:38,187 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 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 77 [2022-02-10 22:58:38,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:38,286 INFO L225 Difference]: With dead ends: 28598 [2022-02-10 22:58:38,286 INFO L226 Difference]: Without dead ends: 28358 [2022-02-10 22:58:38,287 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=175, Invalid=816, Unknown=1, NotChecked=0, Total=992 [2022-02-10 22:58:38,287 INFO L934 BasicCegarLoop]: 155 mSDtfsCounter, 295 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:38,287 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 2029 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 559 Invalid, 0 Unknown, 129 Unchecked, 0.6s Time] [2022-02-10 22:58:38,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28358 states. [2022-02-10 22:58:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28358 to 22854. [2022-02-10 22:58:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22854 states, 22853 states have (on average 3.962455695094736) internal successors, (90554), 22853 states have internal predecessors, (90554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:38,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22854 states to 22854 states and 90554 transitions. [2022-02-10 22:58:38,961 INFO L78 Accepts]: Start accepts. Automaton has 22854 states and 90554 transitions. Word has length 77 [2022-02-10 22:58:38,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:38,962 INFO L470 AbstractCegarLoop]: Abstraction has 22854 states and 90554 transitions. [2022-02-10 22:58:38,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 22854 states and 90554 transitions. [2022-02-10 22:58:39,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 22:58:39,015 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:39,015 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:39,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 22:58:39,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-10 22:58:39,216 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:58:39,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash 365969112, now seen corresponding path program 7 times [2022-02-10 22:58:39,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:39,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359215782] [2022-02-10 22:58:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:39,358 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:39,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359215782] [2022-02-10 22:58:39,358 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359215782] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:39,358 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635253503] [2022-02-10 22:58:39,359 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 22:58:39,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:39,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:39,372 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) [2022-02-10 22:58:39,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 22:58:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:39,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:58:39,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:40,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:44,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635253503] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:44,093 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:44,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 22 [2022-02-10 22:58:44,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080085895] [2022-02-10 22:58:44,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:44,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-02-10 22:58:44,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:44,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-02-10 22:58:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=363, Unknown=1, NotChecked=0, Total=462 [2022-02-10 22:58:44,095 INFO L87 Difference]: Start difference. First operand 22854 states and 90554 transitions. Second operand has 22 states, 22 states have (on average 6.409090909090909) internal successors, (141), 22 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) [2022-02-10 22:58:45,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:45,275 INFO L93 Difference]: Finished difference Result 26829 states and 105527 transitions. [2022-02-10 22:58:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 22:58:45,276 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.409090909090909) internal successors, (141), 22 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 77 [2022-02-10 22:58:45,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:45,367 INFO L225 Difference]: With dead ends: 26829 [2022-02-10 22:58:45,368 INFO L226 Difference]: Without dead ends: 26589 [2022-02-10 22:58:45,368 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 141 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=176, Invalid=635, Unknown=1, NotChecked=0, Total=812 [2022-02-10 22:58:45,368 INFO L934 BasicCegarLoop]: 133 mSDtfsCounter, 345 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:45,369 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 1419 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 352 Invalid, 0 Unknown, 106 Unchecked, 0.8s Time] [2022-02-10 22:58:45,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26589 states. [2022-02-10 22:58:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26589 to 22882. [2022-02-10 22:58:45,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22882 states, 22881 states have (on average 3.962020890695337) internal successors, (90655), 22881 states have internal predecessors, (90655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:46,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22882 states to 22882 states and 90655 transitions. [2022-02-10 22:58:46,050 INFO L78 Accepts]: Start accepts. Automaton has 22882 states and 90655 transitions. Word has length 77 [2022-02-10 22:58:46,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:46,050 INFO L470 AbstractCegarLoop]: Abstraction has 22882 states and 90655 transitions. [2022-02-10 22:58:46,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.409090909090909) internal successors, (141), 22 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) [2022-02-10 22:58:46,050 INFO L276 IsEmpty]: Start isEmpty. Operand 22882 states and 90655 transitions. [2022-02-10 22:58:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 22:58:46,111 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:46,111 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:46,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-10 22:58:46,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:46,311 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:58:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:46,312 INFO L85 PathProgramCache]: Analyzing trace with hash 874283454, now seen corresponding path program 8 times [2022-02-10 22:58:46,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:46,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546818639] [2022-02-10 22:58:46,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:46,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:46,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:46,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546818639] [2022-02-10 22:58:46,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546818639] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:46,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955410511] [2022-02-10 22:58:46,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 22:58:46,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:46,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:46,524 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) [2022-02-10 22:58:46,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 22:58:46,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 22:58:46,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:58:46,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 22:58:46,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:58:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:47,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:58:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:51,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955410511] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:58:51,697 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:58:51,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 24 [2022-02-10 22:58:51,698 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340139250] [2022-02-10 22:58:51,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:58:51,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 22:58:51,698 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:58:51,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 22:58:51,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-02-10 22:58:51,698 INFO L87 Difference]: Start difference. First operand 22882 states and 90655 transitions. Second operand has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:55,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 22:58:57,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 22:58:58,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:58:58,548 INFO L93 Difference]: Finished difference Result 34466 states and 133033 transitions. [2022-02-10 22:58:58,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-10 22:58:58,548 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 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 77 [2022-02-10 22:58:58,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:58:58,663 INFO L225 Difference]: With dead ends: 34466 [2022-02-10 22:58:58,663 INFO L226 Difference]: Without dead ends: 34076 [2022-02-10 22:58:58,664 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=275, Invalid=1531, Unknown=0, NotChecked=0, Total=1806 [2022-02-10 22:58:58,664 INFO L934 BasicCegarLoop]: 249 mSDtfsCounter, 501 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-02-10 22:58:58,664 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 2695 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 754 Invalid, 1 Unknown, 167 Unchecked, 5.1s Time] [2022-02-10 22:58:58,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34076 states. [2022-02-10 22:58:59,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34076 to 23004. [2022-02-10 22:58:59,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23004 states, 23003 states have (on average 3.9643524757640307) internal successors, (91192), 23003 states have internal predecessors, (91192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23004 states to 23004 states and 91192 transitions. [2022-02-10 22:58:59,359 INFO L78 Accepts]: Start accepts. Automaton has 23004 states and 91192 transitions. Word has length 77 [2022-02-10 22:58:59,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:58:59,360 INFO L470 AbstractCegarLoop]: Abstraction has 23004 states and 91192 transitions. [2022-02-10 22:58:59,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:58:59,360 INFO L276 IsEmpty]: Start isEmpty. Operand 23004 states and 91192 transitions. [2022-02-10 22:58:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 22:58:59,536 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:58:59,536 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:58:59,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-02-10 22:58:59,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:59,737 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:58:59,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:58:59,738 INFO L85 PathProgramCache]: Analyzing trace with hash 964263128, now seen corresponding path program 9 times [2022-02-10 22:58:59,738 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:58:59,738 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897559237] [2022-02-10 22:58:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:58:59,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:58:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:58:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:58:59,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:58:59,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897559237] [2022-02-10 22:58:59,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897559237] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:58:59,935 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141509174] [2022-02-10 22:58:59,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 22:58:59,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:58:59,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:58:59,936 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) [2022-02-10 22:58:59,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 22:59:00,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 22:59:00,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:00,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-10 22:59:00,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:00,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:00,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:11,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:11,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141509174] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:11,907 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:11,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 24 [2022-02-10 22:59:11,907 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218339909] [2022-02-10 22:59:11,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:11,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 22:59:11,908 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:11,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 22:59:11,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=442, Unknown=2, NotChecked=0, Total=552 [2022-02-10 22:59:11,908 INFO L87 Difference]: Start difference. First operand 23004 states and 91192 transitions. Second operand has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:13,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 22:59:13,622 INFO L93 Difference]: Finished difference Result 30126 states and 117501 transitions. [2022-02-10 22:59:13,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 22:59:13,623 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 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 77 [2022-02-10 22:59:13,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 22:59:13,729 INFO L225 Difference]: With dead ends: 30126 [2022-02-10 22:59:13,729 INFO L226 Difference]: Without dead ends: 29859 [2022-02-10 22:59:13,729 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=195, Invalid=733, Unknown=2, NotChecked=0, Total=930 [2022-02-10 22:59:13,730 INFO L934 BasicCegarLoop]: 149 mSDtfsCounter, 442 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 22:59:13,730 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 1745 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 449 Invalid, 0 Unknown, 105 Unchecked, 1.2s Time] [2022-02-10 22:59:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29859 states. [2022-02-10 22:59:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29859 to 23004. [2022-02-10 22:59:14,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23004 states, 23003 states have (on average 3.9643524757640307) internal successors, (91192), 23003 states have internal predecessors, (91192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23004 states to 23004 states and 91192 transitions. [2022-02-10 22:59:14,565 INFO L78 Accepts]: Start accepts. Automaton has 23004 states and 91192 transitions. Word has length 77 [2022-02-10 22:59:14,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 22:59:14,565 INFO L470 AbstractCegarLoop]: Abstraction has 23004 states and 91192 transitions. [2022-02-10 22:59:14,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 24 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 22:59:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 23004 states and 91192 transitions. [2022-02-10 22:59:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 22:59:14,616 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 22:59:14,617 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 22:59:14,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 22:59:14,817 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,SelfDestructingSolverStorable31 [2022-02-10 22:59:14,817 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 22:59:14,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 22:59:14,818 INFO L85 PathProgramCache]: Analyzing trace with hash 427341020, now seen corresponding path program 10 times [2022-02-10 22:59:14,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 22:59:14,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802282731] [2022-02-10 22:59:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 22:59:14,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 22:59:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 22:59:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:15,002 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 22:59:15,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802282731] [2022-02-10 22:59:15,002 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802282731] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 22:59:15,002 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302089984] [2022-02-10 22:59:15,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 22:59:15,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 22:59:15,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 22:59:15,005 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) [2022-02-10 22:59:15,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 22:59:15,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 22:59:15,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 22:59:15,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 22:59:15,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 22:59:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:15,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 22:59:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 22:59:30,250 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302089984] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 22:59:30,250 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 22:59:30,250 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 15] total 25 [2022-02-10 22:59:30,250 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242699741] [2022-02-10 22:59:30,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 22:59:30,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 22:59:30,251 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 22:59:30,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 22:59:30,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=476, Unknown=3, NotChecked=0, Total=600 [2022-02-10 22:59:30,251 INFO L87 Difference]: Start difference. First operand 23004 states and 91192 transitions. Second operand has 25 states, 25 states have (on average 6.4) internal successors, (160), 25 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) [2022-02-10 22:59:47,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:00:01,732 WARN L228 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 91 DAG size of output: 69 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:00:04,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:00:06,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:00:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:15,271 INFO L93 Difference]: Finished difference Result 34390 states and 133068 transitions. [2022-02-10 23:00:15,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 23:00:15,271 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.4) internal successors, (160), 25 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 77 [2022-02-10 23:00:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:15,385 INFO L225 Difference]: With dead ends: 34390 [2022-02-10 23:00:15,385 INFO L226 Difference]: Without dead ends: 34150 [2022-02-10 23:00:15,386 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 139 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=323, Invalid=1312, Unknown=5, NotChecked=0, Total=1640 [2022-02-10 23:00:15,386 INFO L934 BasicCegarLoop]: 194 mSDtfsCounter, 589 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 388 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:15,386 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 2639 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 750 Invalid, 3 Unknown, 388 Unchecked, 9.2s Time] [2022-02-10 23:00:15,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34150 states. [2022-02-10 23:00:15,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34150 to 23028. [2022-02-10 23:00:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23028 states, 23027 states have (on average 3.964302775003257) internal successors, (91286), 23027 states have internal predecessors, (91286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23028 states to 23028 states and 91286 transitions. [2022-02-10 23:00:16,107 INFO L78 Accepts]: Start accepts. Automaton has 23028 states and 91286 transitions. Word has length 77 [2022-02-10 23:00:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:16,107 INFO L470 AbstractCegarLoop]: Abstraction has 23028 states and 91286 transitions. [2022-02-10 23:00:16,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.4) internal successors, (160), 25 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) [2022-02-10 23:00:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 23028 states and 91286 transitions. [2022-02-10 23:00:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:16,275 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:16,275 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:16,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-02-10 23:00:16,475 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,SelfDestructingSolverStorable32 [2022-02-10 23:00:16,475 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 23:00:16,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:16,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1561348696, now seen corresponding path program 11 times [2022-02-10 23:00:16,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:16,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126177817] [2022-02-10 23:00:16,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:16,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:16,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:16,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126177817] [2022-02-10 23:00:16,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126177817] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:16,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056594872] [2022-02-10 23:00:16,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:00:16,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:16,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:16,631 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) [2022-02-10 23:00:16,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 23:00:16,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 23:00:16,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:16,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 24 conjunts are in the unsatisfiable core [2022-02-10 23:00:16,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:17,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:20,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056594872] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:20,074 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:20,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 25 [2022-02-10 23:00:20,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652664857] [2022-02-10 23:00:20,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:20,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:00:20,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:00:20,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-02-10 23:00:20,076 INFO L87 Difference]: Start difference. First operand 23028 states and 91286 transitions. Second operand has 25 states, 25 states have (on average 7.36) internal successors, (184), 25 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:23,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:00:26,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:00:28,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:00:28,244 INFO L93 Difference]: Finished difference Result 35996 states and 137873 transitions. [2022-02-10 23:00:28,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 23:00:28,244 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.36) internal successors, (184), 25 states have internal predecessors, (184), 0 states have call successors, (0), 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 77 [2022-02-10 23:00:28,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:00:28,362 INFO L225 Difference]: With dead ends: 35996 [2022-02-10 23:00:28,362 INFO L226 Difference]: Without dead ends: 35456 [2022-02-10 23:00:28,363 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 137 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=330, Invalid=2022, Unknown=0, NotChecked=0, Total=2352 [2022-02-10 23:00:28,363 INFO L934 BasicCegarLoop]: 230 mSDtfsCounter, 561 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:00:28,363 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 2677 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 920 Invalid, 2 Unknown, 101 Unchecked, 5.3s Time] [2022-02-10 23:00:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35456 states. [2022-02-10 23:00:28,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35456 to 23312. [2022-02-10 23:00:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23312 states, 23311 states have (on average 3.9675260606580585) internal successors, (92487), 23311 states have internal predecessors, (92487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:29,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23312 states to 23312 states and 92487 transitions. [2022-02-10 23:00:29,054 INFO L78 Accepts]: Start accepts. Automaton has 23312 states and 92487 transitions. Word has length 77 [2022-02-10 23:00:29,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:00:29,054 INFO L470 AbstractCegarLoop]: Abstraction has 23312 states and 92487 transitions. [2022-02-10 23:00:29,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.36) internal successors, (184), 25 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:00:29,055 INFO L276 IsEmpty]: Start isEmpty. Operand 23312 states and 92487 transitions. [2022-02-10 23:00:29,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:00:29,105 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:00:29,105 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:00:29,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 23:00:29,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:29,305 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 23:00:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:00:29,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1651328370, now seen corresponding path program 12 times [2022-02-10 23:00:29,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:00:29,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387589708] [2022-02-10 23:00:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:00:29,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:00:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:00:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:29,444 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:00:29,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387589708] [2022-02-10 23:00:29,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387589708] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:00:29,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956027191] [2022-02-10 23:00:29,444 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 23:00:29,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:00:29,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:00:29,445 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) [2022-02-10 23:00:29,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 23:00:29,552 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 23:00:29,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:00:29,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-10 23:00:29,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:00:30,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:00:30,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:00:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:00:30,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956027191] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:00:30,941 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:00:30,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 17 [2022-02-10 23:00:30,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380212445] [2022-02-10 23:00:30,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:00:30,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 23:00:30,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:00:30,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 23:00:30,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-02-10 23:00:30,943 INFO L87 Difference]: Start difference. First operand 23312 states and 92487 transitions. Second operand has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 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) [2022-02-10 23:00:40,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:00:42,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:00:53,721 WARN L228 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 65 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:01:01,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:01:01,483 INFO L93 Difference]: Finished difference Result 32610 states and 126305 transitions. [2022-02-10 23:01:01,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 23:01:01,484 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 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 77 [2022-02-10 23:01:01,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:01:01,585 INFO L225 Difference]: With dead ends: 32610 [2022-02-10 23:01:01,586 INFO L226 Difference]: Without dead ends: 32085 [2022-02-10 23:01:01,586 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 144 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=155, Invalid=655, Unknown=2, NotChecked=0, Total=812 [2022-02-10 23:01:01,586 INFO L934 BasicCegarLoop]: 173 mSDtfsCounter, 335 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:01:01,586 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 1721 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 494 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-02-10 23:01:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32085 states. [2022-02-10 23:01:02,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32085 to 23886. [2022-02-10 23:01:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23886 states, 23885 states have (on average 3.970985974460959) internal successors, (94847), 23885 states have internal predecessors, (94847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23886 states to 23886 states and 94847 transitions. [2022-02-10 23:01:02,349 INFO L78 Accepts]: Start accepts. Automaton has 23886 states and 94847 transitions. Word has length 77 [2022-02-10 23:01:02,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:01:02,349 INFO L470 AbstractCegarLoop]: Abstraction has 23886 states and 94847 transitions. [2022-02-10 23:01:02,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 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) [2022-02-10 23:01:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 23886 states and 94847 transitions. [2022-02-10 23:01:02,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:01:02,397 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:01:02,397 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:01:02,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 23:01:02,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:02,598 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 23:01:02,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:01:02,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1114406262, now seen corresponding path program 13 times [2022-02-10 23:01:02,599 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:01:02,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21116396] [2022-02-10 23:01:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:01:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:01:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:02,784 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:01:02,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21116396] [2022-02-10 23:01:02,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21116396] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:01:02,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531483172] [2022-02-10 23:01:02,785 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 23:01:02,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:01:02,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:01:02,786 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) [2022-02-10 23:01:02,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 23:01:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:01:02,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 23:01:02,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:01:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:03,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:01:09,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:01:09,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531483172] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:01:09,450 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:01:09,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 14] total 26 [2022-02-10 23:01:09,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709243224] [2022-02-10 23:01:09,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:01:09,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 23:01:09,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:01:09,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 23:01:09,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=531, Unknown=2, NotChecked=0, Total=650 [2022-02-10 23:01:09,451 INFO L87 Difference]: Start difference. First operand 23886 states and 94847 transitions. Second operand has 26 states, 26 states have (on average 6.3076923076923075) internal successors, (164), 26 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:01:16,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:01:21,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:01:32,454 WARN L228 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 97 DAG size of output: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:01:35,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:01:37,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:01:39,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:01:41,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:01:44,139 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:01:54,015 WARN L228 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 99 DAG size of output: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:02:09,334 WARN L228 SmtUtils]: Spent 9.52s on a formula simplification. DAG size of input: 86 DAG size of output: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:02:13,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:13,626 INFO L93 Difference]: Finished difference Result 39487 states and 152266 transitions. [2022-02-10 23:02:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-10 23:02:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.3076923076923075) internal successors, (164), 26 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-02-10 23:02:13,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:13,787 INFO L225 Difference]: With dead ends: 39487 [2022-02-10 23:02:13,787 INFO L226 Difference]: Without dead ends: 39007 [2022-02-10 23:02:13,788 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 139 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 52.3s TimeCoverageRelationStatistics Valid=436, Invalid=2211, Unknown=5, NotChecked=0, Total=2652 [2022-02-10 23:02:13,788 INFO L934 BasicCegarLoop]: 283 mSDtfsCounter, 746 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 42 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:13,791 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 3174 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1065 Invalid, 6 Unknown, 261 Unchecked, 17.0s Time] [2022-02-10 23:02:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39007 states. [2022-02-10 23:02:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39007 to 24157. [2022-02-10 23:02:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24157 states, 24156 states have (on average 3.978970028150356) internal successors, (96116), 24156 states have internal predecessors, (96116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:14,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24157 states to 24157 states and 96116 transitions. [2022-02-10 23:02:14,751 INFO L78 Accepts]: Start accepts. Automaton has 24157 states and 96116 transitions. Word has length 77 [2022-02-10 23:02:14,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:14,752 INFO L470 AbstractCegarLoop]: Abstraction has 24157 states and 96116 transitions. [2022-02-10 23:02:14,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.3076923076923075) internal successors, (164), 26 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:14,752 INFO L276 IsEmpty]: Start isEmpty. Operand 24157 states and 96116 transitions. [2022-02-10 23:02:14,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-02-10 23:02:14,810 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:14,810 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:02:14,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:15,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-02-10 23:02:15,011 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 23:02:15,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:15,012 INFO L85 PathProgramCache]: Analyzing trace with hash 622784818, now seen corresponding path program 14 times [2022-02-10 23:02:15,012 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:15,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004696097] [2022-02-10 23:02:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:15,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:15,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:15,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:15,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004696097] [2022-02-10 23:02:15,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004696097] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:15,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367435018] [2022-02-10 23:02:15,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:02:15,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:15,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:15,195 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) [2022-02-10 23:02:15,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 23:02:15,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:02:15,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:15,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 22 conjunts are in the unsatisfiable core [2022-02-10 23:02:15,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:15,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:02:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:22,053 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367435018] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:02:22,053 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:02:22,053 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 14] total 25 [2022-02-10 23:02:22,053 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384038449] [2022-02-10 23:02:22,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:02:22,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-10 23:02:22,054 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:02:22,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-10 23:02:22,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=484, Unknown=1, NotChecked=0, Total=600 [2022-02-10 23:02:22,054 INFO L87 Difference]: Start difference. First operand 24157 states and 96116 transitions. Second operand has 25 states, 25 states have (on average 6.48) internal successors, (162), 25 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:28,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:02:28,245 INFO L93 Difference]: Finished difference Result 40139 states and 155118 transitions. [2022-02-10 23:02:28,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 23:02:28,245 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 25 states have internal predecessors, (162), 0 states have call successors, (0), 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 77 [2022-02-10 23:02:28,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:02:28,374 INFO L225 Difference]: With dead ends: 40139 [2022-02-10 23:02:28,374 INFO L226 Difference]: Without dead ends: 39614 [2022-02-10 23:02:28,374 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=379, Invalid=1972, Unknown=1, NotChecked=0, Total=2352 [2022-02-10 23:02:28,375 INFO L934 BasicCegarLoop]: 284 mSDtfsCounter, 717 mSDsluCounter, 3035 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-02-10 23:02:28,375 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 3026 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 959 Invalid, 0 Unknown, 233 Unchecked, 3.6s Time] [2022-02-10 23:02:28,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39614 states. [2022-02-10 23:02:29,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39614 to 24493. [2022-02-10 23:02:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24493 states, 24492 states have (on average 3.9851380042462843) internal successors, (97604), 24492 states have internal predecessors, (97604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:29,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24493 states to 24493 states and 97604 transitions. [2022-02-10 23:02:29,167 INFO L78 Accepts]: Start accepts. Automaton has 24493 states and 97604 transitions. Word has length 77 [2022-02-10 23:02:29,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:02:29,168 INFO L470 AbstractCegarLoop]: Abstraction has 24493 states and 97604 transitions. [2022-02-10 23:02:29,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.48) internal successors, (162), 25 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:02:29,168 INFO L276 IsEmpty]: Start isEmpty. Operand 24493 states and 97604 transitions. [2022-02-10 23:02:29,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-10 23:02:29,310 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:02:29,310 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:02:29,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-10 23:02:29,510 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,SelfDestructingSolverStorable36 [2022-02-10 23:02:29,510 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 23:02:29,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:02:29,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1511133055, now seen corresponding path program 8 times [2022-02-10 23:02:29,511 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:02:29,511 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924566273] [2022-02-10 23:02:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:02:29,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:02:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:02:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:29,651 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:02:29,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924566273] [2022-02-10 23:02:29,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924566273] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:02:29,651 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200597056] [2022-02-10 23:02:29,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 23:02:29,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:02:29,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:02:29,653 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) [2022-02-10 23:02:29,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 23:02:29,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 23:02:29,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:02:29,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 23:02:29,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:02:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:02:30,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:16,428 WARN L228 SmtUtils]: Spent 43.15s on a formula simplification. DAG size of input: 93 DAG size of output: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:03:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:16,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200597056] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:16,953 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:16,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 26 [2022-02-10 23:03:16,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040584881] [2022-02-10 23:03:16,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:16,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-10 23:03:16,953 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:16,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-10 23:03:16,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=560, Unknown=1, NotChecked=0, Total=650 [2022-02-10 23:03:16,954 INFO L87 Difference]: Start difference. First operand 24493 states and 97604 transitions. Second operand has 26 states, 26 states have (on average 7.884615384615385) internal successors, (205), 26 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:20,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:03:26,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:26,029 INFO L93 Difference]: Finished difference Result 57841 states and 217777 transitions. [2022-02-10 23:03:26,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 23:03:26,029 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.884615384615385) internal successors, (205), 26 states have internal predecessors, (205), 0 states have call successors, (0), 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 78 [2022-02-10 23:03:26,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:26,206 INFO L225 Difference]: With dead ends: 57841 [2022-02-10 23:03:26,206 INFO L226 Difference]: Without dead ends: 55522 [2022-02-10 23:03:26,207 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 146 SyntacticMatches, 7 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1736 ImplicationChecksByTransitivity, 48.9s TimeCoverageRelationStatistics Valid=891, Invalid=5114, Unknown=1, NotChecked=0, Total=6006 [2022-02-10 23:03:26,207 INFO L934 BasicCegarLoop]: 318 mSDtfsCounter, 1462 mSDsluCounter, 5308 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 98 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 5003 SdHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:26,207 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1462 Valid, 5003 Invalid, 2420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2155 Invalid, 1 Unknown, 166 Unchecked, 5.5s Time] [2022-02-10 23:03:26,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55522 states. [2022-02-10 23:03:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55522 to 30411. [2022-02-10 23:03:27,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30411 states, 30410 states have (on average 4.014929299572509) internal successors, (122094), 30410 states have internal predecessors, (122094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30411 states to 30411 states and 122094 transitions. [2022-02-10 23:03:27,316 INFO L78 Accepts]: Start accepts. Automaton has 30411 states and 122094 transitions. Word has length 78 [2022-02-10 23:03:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:27,316 INFO L470 AbstractCegarLoop]: Abstraction has 30411 states and 122094 transitions. [2022-02-10 23:03:27,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.884615384615385) internal successors, (205), 26 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 30411 states and 122094 transitions. [2022-02-10 23:03:27,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-10 23:03:27,386 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:27,387 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:03:27,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:27,587 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,SelfDestructingSolverStorable37 [2022-02-10 23:03:27,587 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 23:03:27,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:27,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1452648555, now seen corresponding path program 1 times [2022-02-10 23:03:27,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:27,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412287333] [2022-02-10 23:03:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:27,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:03:27,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:27,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412287333] [2022-02-10 23:03:27,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412287333] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:27,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639249966] [2022-02-10 23:03:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:27,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:27,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:27,695 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) [2022-02-10 23:03:27,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 23:03:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:27,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-10 23:03:27,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:28,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:28,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:28,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639249966] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:28,432 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:28,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 17 [2022-02-10 23:03:28,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575605119] [2022-02-10 23:03:28,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:28,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 23:03:28,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:28,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 23:03:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-02-10 23:03:28,433 INFO L87 Difference]: Start difference. First operand 30411 states and 122094 transitions. Second operand has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 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) [2022-02-10 23:03:31,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:31,786 INFO L93 Difference]: Finished difference Result 83830 states and 321831 transitions. [2022-02-10 23:03:31,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-10 23:03:31,786 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 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 78 [2022-02-10 23:03:31,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:32,275 INFO L225 Difference]: With dead ends: 83830 [2022-02-10 23:03:32,275 INFO L226 Difference]: Without dead ends: 83338 [2022-02-10 23:03:32,275 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=807, Invalid=2615, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 23:03:32,276 INFO L934 BasicCegarLoop]: 320 mSDtfsCounter, 1236 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:32,276 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 2662 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-10 23:03:32,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83338 states. [2022-02-10 23:03:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83338 to 35465. [2022-02-10 23:03:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35465 states, 35464 states have (on average 4.055126325287616) internal successors, (143811), 35464 states have internal predecessors, (143811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35465 states to 35465 states and 143811 transitions. [2022-02-10 23:03:33,885 INFO L78 Accepts]: Start accepts. Automaton has 35465 states and 143811 transitions. Word has length 78 [2022-02-10 23:03:33,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:33,885 INFO L470 AbstractCegarLoop]: Abstraction has 35465 states and 143811 transitions. [2022-02-10 23:03:33,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.176470588235293) internal successors, (139), 17 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) [2022-02-10 23:03:33,885 INFO L276 IsEmpty]: Start isEmpty. Operand 35465 states and 143811 transitions. [2022-02-10 23:03:34,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-10 23:03:34,160 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:34,160 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:03:34,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:34,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-10 23:03:34,372 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 23:03:34,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:34,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1363147869, now seen corresponding path program 2 times [2022-02-10 23:03:34,372 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:34,372 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700782229] [2022-02-10 23:03:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:34,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:03:34,462 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:34,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700782229] [2022-02-10 23:03:34,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700782229] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:03:34,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:03:34,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:03:34,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389063434] [2022-02-10 23:03:34,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:03:34,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 23:03:34,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:34,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 23:03:34,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 23:03:34,463 INFO L87 Difference]: Start difference. First operand 35465 states and 143811 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:35,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:35,057 INFO L93 Difference]: Finished difference Result 49422 states and 196046 transitions. [2022-02-10 23:03:35,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 23:03:35,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-02-10 23:03:35,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:35,264 INFO L225 Difference]: With dead ends: 49422 [2022-02-10 23:03:35,264 INFO L226 Difference]: Without dead ends: 49422 [2022-02-10 23:03:35,264 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:03:35,265 INFO L934 BasicCegarLoop]: 120 mSDtfsCounter, 92 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:35,265 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 353 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:03:35,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49422 states. [2022-02-10 23:03:36,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49422 to 35412. [2022-02-10 23:03:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35412 states, 35411 states have (on average 4.05503939453842) internal successors, (143593), 35411 states have internal predecessors, (143593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:36,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35412 states to 35412 states and 143593 transitions. [2022-02-10 23:03:36,448 INFO L78 Accepts]: Start accepts. Automaton has 35412 states and 143593 transitions. Word has length 78 [2022-02-10 23:03:36,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:36,448 INFO L470 AbstractCegarLoop]: Abstraction has 35412 states and 143593 transitions. [2022-02-10 23:03:36,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:36,448 INFO L276 IsEmpty]: Start isEmpty. Operand 35412 states and 143593 transitions. [2022-02-10 23:03:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-10 23:03:36,671 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:36,671 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:03:36,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-10 23:03:36,672 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 23:03:36,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:36,672 INFO L85 PathProgramCache]: Analyzing trace with hash 432030681, now seen corresponding path program 3 times [2022-02-10 23:03:36,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:36,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608144381] [2022-02-10 23:03:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:36,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:03:36,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:36,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608144381] [2022-02-10 23:03:36,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608144381] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:36,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792174691] [2022-02-10 23:03:36,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 23:03:36,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:36,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:36,783 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) [2022-02-10 23:03:36,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 23:03:36,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 23:03:36,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:36,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 23:03:36,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:03:37,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:03:37,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792174691] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:37,551 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:37,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2022-02-10 23:03:37,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269000999] [2022-02-10 23:03:37,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:37,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 23:03:37,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:37,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 23:03:37,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-02-10 23:03:37,552 INFO L87 Difference]: Start difference. First operand 35412 states and 143593 transitions. Second operand has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:03:38,848 INFO L93 Difference]: Finished difference Result 85115 states and 334695 transitions. [2022-02-10 23:03:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 23:03:38,849 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 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 78 [2022-02-10 23:03:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:03:39,362 INFO L225 Difference]: With dead ends: 85115 [2022-02-10 23:03:39,362 INFO L226 Difference]: Without dead ends: 84827 [2022-02-10 23:03:39,362 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=388, Invalid=734, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 23:03:39,362 INFO L934 BasicCegarLoop]: 239 mSDtfsCounter, 573 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 23:03:39,363 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 1195 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 23:03:39,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84827 states. [2022-02-10 23:03:41,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84827 to 44188. [2022-02-10 23:03:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44188 states, 44187 states have (on average 4.117115893814923) internal successors, (181923), 44187 states have internal predecessors, (181923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44188 states to 44188 states and 181923 transitions. [2022-02-10 23:03:41,232 INFO L78 Accepts]: Start accepts. Automaton has 44188 states and 181923 transitions. Word has length 78 [2022-02-10 23:03:41,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:03:41,232 INFO L470 AbstractCegarLoop]: Abstraction has 44188 states and 181923 transitions. [2022-02-10 23:03:41,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:03:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand 44188 states and 181923 transitions. [2022-02-10 23:03:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-10 23:03:41,528 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:03:41,528 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:03:41,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-10 23:03:41,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:41,729 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 23:03:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:03:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1103958815, now seen corresponding path program 4 times [2022-02-10 23:03:41,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:03:41,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762180949] [2022-02-10 23:03:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:03:41,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:03:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:03:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:41,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:03:41,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762180949] [2022-02-10 23:03:41,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762180949] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:03:41,847 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130014047] [2022-02-10 23:03:41,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 23:03:41,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:03:41,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:03:41,848 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) [2022-02-10 23:03:41,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 23:03:41,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 23:03:41,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:03:41,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-10 23:03:41,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:03:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:42,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:03:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:03:43,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130014047] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:03:43,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:03:43,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 11] total 24 [2022-02-10 23:03:43,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550856796] [2022-02-10 23:03:43,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:03:43,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-02-10 23:03:43,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:03:43,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-02-10 23:03:43,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2022-02-10 23:03:43,985 INFO L87 Difference]: Start difference. First operand 44188 states and 181923 transitions. Second operand has 24 states, 24 states have (on average 8.541666666666666) internal successors, (205), 24 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:04:04,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:04:06,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:04:08,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:04:11,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:04:22,094 WARN L228 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 73 DAG size of output: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:05:04,230 WARN L228 SmtUtils]: Spent 35.06s on a formula simplification. DAG size of input: 88 DAG size of output: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:05:05,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:05:07,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:05:09,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:05:12,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:05:14,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:05:16,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:05:17,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:17,094 INFO L93 Difference]: Finished difference Result 77455 states and 307994 transitions. [2022-02-10 23:05:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 23:05:17,094 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.541666666666666) internal successors, (205), 24 states have internal predecessors, (205), 0 states have call successors, (0), 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 78 [2022-02-10 23:05:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:17,404 INFO L225 Difference]: With dead ends: 77455 [2022-02-10 23:05:17,404 INFO L226 Difference]: Without dead ends: 75803 [2022-02-10 23:05:17,405 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 69.5s TimeCoverageRelationStatistics Valid=606, Invalid=3049, Unknown=5, NotChecked=0, Total=3660 [2022-02-10 23:05:17,405 INFO L934 BasicCegarLoop]: 256 mSDtfsCounter, 1057 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 66 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:17,405 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 2847 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1316 Invalid, 8 Unknown, 180 Unchecked, 23.5s Time] [2022-02-10 23:05:17,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75803 states. [2022-02-10 23:05:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75803 to 45556. [2022-02-10 23:05:18,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45556 states, 45555 states have (on average 4.10765009329382) internal successors, (187124), 45555 states have internal predecessors, (187124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45556 states to 45556 states and 187124 transitions. [2022-02-10 23:05:19,095 INFO L78 Accepts]: Start accepts. Automaton has 45556 states and 187124 transitions. Word has length 78 [2022-02-10 23:05:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:19,095 INFO L470 AbstractCegarLoop]: Abstraction has 45556 states and 187124 transitions. [2022-02-10 23:05:19,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.541666666666666) internal successors, (205), 24 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand 45556 states and 187124 transitions. [2022-02-10 23:05:19,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-10 23:05:19,193 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:19,194 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:05:19,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 23:05:19,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:19,394 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 23:05:19,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:19,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1828713943, now seen corresponding path program 9 times [2022-02-10 23:05:19,395 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:19,395 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158702006] [2022-02-10 23:05:19,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:19,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:19,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:19,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158702006] [2022-02-10 23:05:19,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158702006] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:05:19,687 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:05:19,687 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 23:05:19,687 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410767237] [2022-02-10 23:05:19,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:05:19,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 23:05:19,688 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:19,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 23:05:19,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:05:19,688 INFO L87 Difference]: Start difference. First operand 45556 states and 187124 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:20,164 INFO L93 Difference]: Finished difference Result 54365 states and 218874 transitions. [2022-02-10 23:05:20,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 23:05:20,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-02-10 23:05:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:20,381 INFO L225 Difference]: With dead ends: 54365 [2022-02-10 23:05:20,381 INFO L226 Difference]: Without dead ends: 52943 [2022-02-10 23:05:20,381 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:05:20,382 INFO L934 BasicCegarLoop]: 163 mSDtfsCounter, 146 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:20,382 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 656 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:05:20,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52943 states. [2022-02-10 23:05:21,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52943 to 47668. [2022-02-10 23:05:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47668 states, 47667 states have (on average 4.0887825959259025) internal successors, (194900), 47667 states have internal predecessors, (194900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:21,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47668 states to 47668 states and 194900 transitions. [2022-02-10 23:05:21,937 INFO L78 Accepts]: Start accepts. Automaton has 47668 states and 194900 transitions. Word has length 78 [2022-02-10 23:05:21,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:21,938 INFO L470 AbstractCegarLoop]: Abstraction has 47668 states and 194900 transitions. [2022-02-10 23:05:21,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:21,938 INFO L276 IsEmpty]: Start isEmpty. Operand 47668 states and 194900 transitions. [2022-02-10 23:05:22,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-10 23:05:22,261 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:22,261 INFO L515 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:05:22,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-10 23:05:22,261 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 23:05:22,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:22,261 INFO L85 PathProgramCache]: Analyzing trace with hash -715486043, now seen corresponding path program 10 times [2022-02-10 23:05:22,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:22,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032694815] [2022-02-10 23:05:22,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:22,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:22,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:22,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032694815] [2022-02-10 23:05:22,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032694815] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:05:22,436 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:05:22,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-10 23:05:22,437 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803601169] [2022-02-10 23:05:22,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:05:22,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 23:05:22,437 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:22,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 23:05:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:05:22,437 INFO L87 Difference]: Start difference. First operand 47668 states and 194900 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:05:23,278 INFO L93 Difference]: Finished difference Result 68831 states and 278691 transitions. [2022-02-10 23:05:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 23:05:23,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-02-10 23:05:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:05:23,556 INFO L225 Difference]: With dead ends: 68831 [2022-02-10 23:05:23,556 INFO L226 Difference]: Without dead ends: 68165 [2022-02-10 23:05:23,556 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:05:23,556 INFO L934 BasicCegarLoop]: 168 mSDtfsCounter, 190 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 23:05:23,557 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 769 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 23:05:23,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68165 states. [2022-02-10 23:05:25,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68165 to 51438. [2022-02-10 23:05:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51438 states, 51437 states have (on average 4.128701129537103) internal successors, (212368), 51437 states have internal predecessors, (212368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:25,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51438 states to 51438 states and 212368 transitions. [2022-02-10 23:05:25,632 INFO L78 Accepts]: Start accepts. Automaton has 51438 states and 212368 transitions. Word has length 78 [2022-02-10 23:05:25,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:05:25,632 INFO L470 AbstractCegarLoop]: Abstraction has 51438 states and 212368 transitions. [2022-02-10 23:05:25,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:25,632 INFO L276 IsEmpty]: Start isEmpty. Operand 51438 states and 212368 transitions. [2022-02-10 23:05:25,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-02-10 23:05:25,997 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:05:25,997 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:05:25,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-10 23:05:25,997 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 23:05:25,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:05:25,997 INFO L85 PathProgramCache]: Analyzing trace with hash 36747593, now seen corresponding path program 5 times [2022-02-10 23:05:25,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:05:25,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027741357] [2022-02-10 23:05:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:05:25,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:05:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:05:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:26,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:05:26,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027741357] [2022-02-10 23:05:26,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027741357] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:05:26,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757981109] [2022-02-10 23:05:26,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 23:05:26,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:05:26,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:05:26,156 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) [2022-02-10 23:05:26,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 23:05:26,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 23:05:26,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 23:05:26,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2022-02-10 23:05:26,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:05:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:26,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:05:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:05:27,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757981109] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:05:27,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:05:27,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 10] total 23 [2022-02-10 23:05:27,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495755139] [2022-02-10 23:05:27,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:05:27,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-10 23:05:27,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:05:27,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-10 23:05:27,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-02-10 23:05:27,693 INFO L87 Difference]: Start difference. First operand 51438 states and 212368 transitions. Second operand has 23 states, 23 states have (on average 8.91304347826087) internal successors, (205), 23 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:05:47,294 WARN L228 SmtUtils]: Spent 19.51s on a formula simplification. DAG size of input: 94 DAG size of output: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:05:49,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:06:05,128 WARN L228 SmtUtils]: Spent 15.47s on a formula simplification. DAG size of input: 107 DAG size of output: 105 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:06:20,429 WARN L228 SmtUtils]: Spent 15.25s on a formula simplification. DAG size of input: 106 DAG size of output: 104 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:06:33,962 WARN L228 SmtUtils]: Spent 13.47s on a formula simplification. DAG size of input: 99 DAG size of output: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:06:59,383 WARN L228 SmtUtils]: Spent 25.37s on a formula simplification. DAG size of input: 109 DAG size of output: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:07:20,582 WARN L228 SmtUtils]: Spent 19.16s on a formula simplification. DAG size of input: 119 DAG size of output: 112 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:07:36,328 WARN L228 SmtUtils]: Spent 15.60s on a formula simplification. DAG size of input: 112 DAG size of output: 110 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:07:57,379 WARN L228 SmtUtils]: Spent 18.98s on a formula simplification. DAG size of input: 112 DAG size of output: 110 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:08:17,592 WARN L228 SmtUtils]: Spent 18.08s on a formula simplification. DAG size of input: 100 DAG size of output: 95 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:08:36,526 WARN L228 SmtUtils]: Spent 16.84s on a formula simplification. DAG size of input: 111 DAG size of output: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:08:38,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:08:40,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:08:42,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:08:44,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:11,915 WARN L228 SmtUtils]: Spent 25.15s on a formula simplification. DAG size of input: 122 DAG size of output: 115 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:09:14,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:16,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:18,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:20,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:22,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:24,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:26,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:27,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:29,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:31,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:33,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:35,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:38,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:42,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-10 23:09:59,642 WARN L228 SmtUtils]: Spent 14.85s on a formula simplification. DAG size of input: 105 DAG size of output: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:10:31,943 WARN L228 SmtUtils]: Spent 31.25s on a formula simplification. DAG size of input: 106 DAG size of output: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:10:47,805 WARN L228 SmtUtils]: Spent 13.62s on a formula simplification. DAG size of input: 99 DAG size of output: 88 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:11:06,436 WARN L228 SmtUtils]: Spent 16.54s on a formula simplification. DAG size of input: 108 DAG size of output: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-10 23:11:08,501 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2022-02-10 23:11:20,559 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 23:11:20,559 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-10 23:11:21,576 WARN L244 SmtUtils]: Removed 3 from assertion stack [2022-02-10 23:11:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-10 23:11:21,577 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3289 ImplicationChecksByTransitivity, 301.3s TimeCoverageRelationStatistics Valid=1589, Invalid=8304, Unknown=7, NotChecked=0, Total=9900 [2022-02-10 23:11:21,578 INFO L934 BasicCegarLoop]: 164 mSDtfsCounter, 707 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 93 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 2210 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 42.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:11:21,578 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 2210 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1862 Invalid, 18 Unknown, 200 Unchecked, 42.1s Time] [2022-02-10 23:11:21,579 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-02-10 23:11:21,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-10 23:11:21,603 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 [2022-02-10 23:11:21,779 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,SelfDestructingSolverStorable44 [2022-02-10 23:11:21,779 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (51438states) and FLOYD_HOARE automaton (currently 93 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 110 for 6722ms.. [2022-02-10 23:11:21,781 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-02-10 23:11:21,781 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-02-10 23:11:21,781 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-02-10 23:11:21,783 INFO L733 BasicCegarLoop]: Path program histogram: [14, 10, 10, 5, 3, 1, 1, 1] [2022-02-10 23:11:21,785 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-10 23:11:21,785 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 23:11:21,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:11:21 BasicIcfg [2022-02-10 23:11:21,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 23:11:21,787 INFO L158 Benchmark]: Toolchain (without parser) took 850525.15ms. Allocated memory was 187.7MB in the beginning and 5.7GB in the end (delta: 5.5GB). Free memory was 137.1MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 869.1MB. Max. memory is 8.0GB. [2022-02-10 23:11:21,787 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 153.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:11:21,789 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.09ms. Allocated memory is still 187.7MB. Free memory was 137.0MB in the beginning and 164.0MB in the end (delta: -27.0MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2022-02-10 23:11:21,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.16ms. Allocated memory is still 187.7MB. Free memory was 164.0MB in the beginning and 162.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-10 23:11:21,793 INFO L158 Benchmark]: Boogie Preprocessor took 31.39ms. Allocated memory is still 187.7MB. Free memory was 162.3MB in the beginning and 160.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:11:21,793 INFO L158 Benchmark]: RCFGBuilder took 284.58ms. Allocated memory is still 187.7MB. Free memory was 160.9MB in the beginning and 146.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-02-10 23:11:21,794 INFO L158 Benchmark]: TraceAbstraction took 849931.67ms. Allocated memory was 187.7MB in the beginning and 5.7GB in the end (delta: 5.5GB). Free memory was 145.7MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 876.2MB. Max. memory is 8.0GB. [2022-02-10 23:11:21,794 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory is still 153.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 236.09ms. Allocated memory is still 187.7MB. Free memory was 137.0MB in the beginning and 164.0MB in the end (delta: -27.0MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.16ms. Allocated memory is still 187.7MB. Free memory was 164.0MB in the beginning and 162.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.39ms. Allocated memory is still 187.7MB. Free memory was 162.3MB in the beginning and 160.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 284.58ms. Allocated memory is still 187.7MB. Free memory was 160.9MB in the beginning and 146.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 849931.67ms. Allocated memory was 187.7MB in the beginning and 5.7GB in the end (delta: 5.5GB). Free memory was 145.7MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 876.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (51438states) and FLOYD_HOARE automaton (currently 93 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 110 for 6722ms.. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (51438states) and FLOYD_HOARE automaton (currently 93 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 110 for 6722ms.. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (51438states) and FLOYD_HOARE automaton (currently 93 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 110 for 6722ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (51438states) and FLOYD_HOARE automaton (currently 93 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 110 for 6722ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 113 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 849.8s, OverallIterations: 45, TraceHistogramMax: 2, PathProgramHistogramMax: 14, EmptinessCheckTime: 3.0s, AutomataDifference: 668.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 41 mSolverCounterUnknown, 23013 SdHoareTripleChecker+Valid, 134.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23013 mSDsluCounter, 70333 SdHoareTripleChecker+Invalid, 130.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3446 IncrementalHoareTripleChecker+Unchecked, 68673 mSDsCounter, 2022 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28652 IncrementalHoareTripleChecker+Invalid, 34161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2022 mSolverCounterUnsat, 8301 mSDtfsCounter, 28652 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5713 GetRequests, 4090 SyntacticMatches, 79 SemanticMatches, 1543 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 33331 ImplicationChecksByTransitivity, 621.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51438occurred in iteration=44, InterpolantAutomatonStates: 1261, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 25.7s AutomataMinimizationTime, 44 MinimizatonAttempts, 477040 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 142.0s InterpolantComputationTime, 5675 NumberOfCodeBlocks, 5668 NumberOfCodeBlocksAsserted, 108 NumberOfCheckSat, 7641 ConstructedInterpolants, 334 QuantifiedInterpolants, 93377 SizeOfPredicates, 242 NumberOfNonLiveVariables, 5968 ConjunctsInSsa, 500 ConjunctsInUnsatCore, 102 InterpolantComputations, 18 PerfectInterpolantSequences, 84/349 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown