/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/pthread-wmm/safe037_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 11:44:03,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 11:44:03,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 11:44:03,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 11:44:03,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-21 11:44:03,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-21 11:44:03,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-21 11:44:03,208 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 [2021-08-21 11:44:03,239 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 11:44:03,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 11:44:03,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 11:44:03,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 11:44:03,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 11:44:03,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 11:44:03,242 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 11:44:03,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 11:44:03,242 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 11:44:03,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 11:44:03,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 11:44:03,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 11:44:03,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 11:44:03,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 11:44:03,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 11:44:03,243 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 11:44:03,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 11:44:03,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 11:44:03,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 11:44:03,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 11:44:03,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 11:44:03,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 11:44:03,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 11:44:03,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:44:03,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 11:44:03,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 11:44:03,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 11:44:03,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 11:44:03,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 11:44:03,245 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 11:44:03,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 11:44:03,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 11:44:03,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 11:44:03,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 11:44:03,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 11:44:03,502 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 11:44:03,502 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 11:44:03,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.oepc.i [2021-08-21 11:44:03,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f852606/129df72645f94a3bb7f465be0674fd2a/FLAGab3ba1876 [2021-08-21 11:44:03,994 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 11:44:03,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.oepc.i [2021-08-21 11:44:04,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f852606/129df72645f94a3bb7f465be0674fd2a/FLAGab3ba1876 [2021-08-21 11:44:04,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f852606/129df72645f94a3bb7f465be0674fd2a [2021-08-21 11:44:04,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 11:44:04,028 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 11:44:04,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 11:44:04,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 11:44:04,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 11:44:04,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:44:04" (1/1) ... [2021-08-21 11:44:04,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3f21f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04, skipping insertion in model container [2021-08-21 11:44:04,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:44:04" (1/1) ... [2021-08-21 11:44:04,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 11:44:04,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 11:44:04,189 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.oepc.i[950,963] [2021-08-21 11:44:04,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:44:04,321 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 11:44:04,330 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.oepc.i[950,963] [2021-08-21 11:44:04,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:44:04,395 INFO L208 MainTranslator]: Completed translation [2021-08-21 11:44:04,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04 WrapperNode [2021-08-21 11:44:04,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 11:44:04,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 11:44:04,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 11:44:04,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 11:44:04,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04" (1/1) ... [2021-08-21 11:44:04,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04" (1/1) ... [2021-08-21 11:44:04,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 11:44:04,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 11:44:04,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 11:44:04,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 11:44:04,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04" (1/1) ... [2021-08-21 11:44:04,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04" (1/1) ... [2021-08-21 11:44:04,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04" (1/1) ... [2021-08-21 11:44:04,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04" (1/1) ... [2021-08-21 11:44:04,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04" (1/1) ... [2021-08-21 11:44:04,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04" (1/1) ... [2021-08-21 11:44:04,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04" (1/1) ... [2021-08-21 11:44:04,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 11:44:04,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 11:44:04,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 11:44:04,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 11:44:04,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04" (1/1) ... [2021-08-21 11:44:04,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:44:04,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:44:04,503 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) [2021-08-21 11:44:04,525 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 [2021-08-21 11:44:04,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 11:44:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 11:44:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 11:44:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 11:44:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-21 11:44:04,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-21 11:44:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-21 11:44:04,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-21 11:44:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-21 11:44:04,543 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-21 11:44:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 11:44:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 11:44:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 11:44:04,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 11:44:04,544 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 11:44:04,822 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 11:44:04,823 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-21 11:44:04,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:44:04 BoogieIcfgContainer [2021-08-21 11:44:04,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 11:44:04,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 11:44:04,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 11:44:04,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 11:44:04,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:44:04" (1/3) ... [2021-08-21 11:44:04,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e55892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:44:04, skipping insertion in model container [2021-08-21 11:44:04,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:04" (2/3) ... [2021-08-21 11:44:04,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e55892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:44:04, skipping insertion in model container [2021-08-21 11:44:04,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:44:04" (3/3) ... [2021-08-21 11:44:04,829 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_rmo.oepc.i [2021-08-21 11:44:04,832 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 11:44:04,832 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 11:44:04,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 11:44:04,832 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 11:44:04,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,850 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,853 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,853 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,854 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,854 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,854 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,854 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,854 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,856 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,857 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,860 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,860 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,860 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,860 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,862 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,863 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:04,864 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-21 11:44:04,889 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 11:44:04,893 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, mConcurrency=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 [2021-08-21 11:44:04,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-21 11:44:04,899 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 85 transitions, 185 flow [2021-08-21 11:44:05,043 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:05,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:05,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-21 11:44:05,084 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:05,084 INFO L512 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] [2021-08-21 11:44:05,085 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:44:05,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:05,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2125126979, now seen corresponding path program 1 times [2021-08-21 11:44:05,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:05,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177562325] [2021-08-21 11:44:05,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:05,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:05,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:05,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177562325] [2021-08-21 11:44:05,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177562325] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:05,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:05,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:44:05,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195884454] [2021-08-21 11:44:05,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:44:05,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:05,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:44:05,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:44:05,455 INFO L87 Difference]: Start difference. First operand has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 0 states have call successors, (0), 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 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:05,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:05,712 INFO L93 Difference]: Finished difference Result 6507 states and 21851 transitions. [2021-08-21 11:44:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 11:44:05,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-08-21 11:44:05,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:05,756 INFO L225 Difference]: With dead ends: 6507 [2021-08-21 11:44:05,756 INFO L226 Difference]: Without dead ends: 4513 [2021-08-21 11:44:05,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 117.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:44:05,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2021-08-21 11:44:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 4513. [2021-08-21 11:44:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4513 states, 4512 states have (on average 3.3324468085106385) internal successors, (15036), 4512 states have internal predecessors, (15036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:05,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 15036 transitions. [2021-08-21 11:44:05,987 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 15036 transitions. Word has length 50 [2021-08-21 11:44:05,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:05,988 INFO L470 AbstractCegarLoop]: Abstraction has 4513 states and 15036 transitions. [2021-08-21 11:44:05,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 15036 transitions. [2021-08-21 11:44:06,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-21 11:44:06,004 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:06,011 INFO L512 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] [2021-08-21 11:44:06,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 11:44:06,012 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:44:06,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:06,014 INFO L82 PathProgramCache]: Analyzing trace with hash -259561983, now seen corresponding path program 1 times [2021-08-21 11:44:06,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:06,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016977796] [2021-08-21 11:44:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:06,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:06,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:06,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016977796] [2021-08-21 11:44:06,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016977796] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:06,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:06,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:44:06,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83112016] [2021-08-21 11:44:06,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:44:06,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:06,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:44:06,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:44:06,154 INFO L87 Difference]: Start difference. First operand 4513 states and 15036 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:06,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:06,314 INFO L93 Difference]: Finished difference Result 4045 states and 12969 transitions. [2021-08-21 11:44:06,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 11:44:06,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-08-21 11:44:06,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:06,328 INFO L225 Difference]: With dead ends: 4045 [2021-08-21 11:44:06,329 INFO L226 Difference]: Without dead ends: 2929 [2021-08-21 11:44:06,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 83.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:44:06,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2021-08-21 11:44:06,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2929. [2021-08-21 11:44:06,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2928 states have (on average 3.151639344262295) internal successors, (9228), 2928 states have internal predecessors, (9228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 9228 transitions. [2021-08-21 11:44:06,431 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 9228 transitions. Word has length 54 [2021-08-21 11:44:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:06,432 INFO L470 AbstractCegarLoop]: Abstraction has 2929 states and 9228 transitions. [2021-08-21 11:44:06,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:06,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 9228 transitions. [2021-08-21 11:44:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-21 11:44:06,438 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:06,438 INFO L512 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] [2021-08-21 11:44:06,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 11:44:06,438 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:44:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:06,439 INFO L82 PathProgramCache]: Analyzing trace with hash -237595841, now seen corresponding path program 1 times [2021-08-21 11:44:06,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:06,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317191600] [2021-08-21 11:44:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:06,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:06,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:06,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317191600] [2021-08-21 11:44:06,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317191600] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:06,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:06,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 11:44:06,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041651987] [2021-08-21 11:44:06,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 11:44:06,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 11:44:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-21 11:44:06,595 INFO L87 Difference]: Start difference. First operand 2929 states and 9228 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:06,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:06,737 INFO L93 Difference]: Finished difference Result 2281 states and 7005 transitions. [2021-08-21 11:44:06,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 11:44:06,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-08-21 11:44:06,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:06,745 INFO L225 Difference]: With dead ends: 2281 [2021-08-21 11:44:06,745 INFO L226 Difference]: Without dead ends: 1741 [2021-08-21 11:44:06,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:44:06,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2021-08-21 11:44:06,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1741. [2021-08-21 11:44:06,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1740 states have (on average 3.027586206896552) internal successors, (5268), 1740 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 5268 transitions. [2021-08-21 11:44:06,776 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 5268 transitions. Word has length 58 [2021-08-21 11:44:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:06,777 INFO L470 AbstractCegarLoop]: Abstraction has 1741 states and 5268 transitions. [2021-08-21 11:44:06,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:06,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 5268 transitions. [2021-08-21 11:44:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:44:06,780 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:06,780 INFO L512 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] [2021-08-21 11:44:06,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 11:44:06,781 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:44:06,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:06,781 INFO L82 PathProgramCache]: Analyzing trace with hash 638441341, now seen corresponding path program 1 times [2021-08-21 11:44:06,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:06,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026151748] [2021-08-21 11:44:06,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:06,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:06,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:06,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026151748] [2021-08-21 11:44:06,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026151748] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:06,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:06,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:44:06,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417977343] [2021-08-21 11:44:06,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:44:06,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:06,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:44:06,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:44:06,869 INFO L87 Difference]: Start difference. First operand 1741 states and 5268 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:06,980 INFO L93 Difference]: Finished difference Result 2404 states and 7288 transitions. [2021-08-21 11:44:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 11:44:06,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-08-21 11:44:06,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:06,988 INFO L225 Difference]: With dead ends: 2404 [2021-08-21 11:44:06,988 INFO L226 Difference]: Without dead ends: 1713 [2021-08-21 11:44:06,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 97.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:44:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-08-21 11:44:07,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1485. [2021-08-21 11:44:07,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 2.967654986522911) internal successors, (4404), 1484 states have internal predecessors, (4404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:07,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4404 transitions. [2021-08-21 11:44:07,034 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4404 transitions. Word has length 62 [2021-08-21 11:44:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:07,034 INFO L470 AbstractCegarLoop]: Abstraction has 1485 states and 4404 transitions. [2021-08-21 11:44:07,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:07,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4404 transitions. [2021-08-21 11:44:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:44:07,057 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:07,057 INFO L512 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] [2021-08-21 11:44:07,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 11:44:07,058 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:44:07,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:07,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1342176095, now seen corresponding path program 2 times [2021-08-21 11:44:07,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:07,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580499073] [2021-08-21 11:44:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:07,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:07,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:07,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580499073] [2021-08-21 11:44:07,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580499073] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:07,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:07,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-21 11:44:07,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060311517] [2021-08-21 11:44:07,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-21 11:44:07,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:07,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-21 11:44:07,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-21 11:44:07,152 INFO L87 Difference]: Start difference. First operand 1485 states and 4404 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:07,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:07,232 INFO L93 Difference]: Finished difference Result 2148 states and 6424 transitions. [2021-08-21 11:44:07,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 11:44:07,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-08-21 11:44:07,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:07,237 INFO L225 Difference]: With dead ends: 2148 [2021-08-21 11:44:07,237 INFO L226 Difference]: Without dead ends: 1146 [2021-08-21 11:44:07,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 72.6ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-21 11:44:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-08-21 11:44:07,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1146. [2021-08-21 11:44:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.958951965065502) internal successors, (3388), 1145 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 3388 transitions. [2021-08-21 11:44:07,256 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 3388 transitions. Word has length 62 [2021-08-21 11:44:07,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:07,256 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 3388 transitions. [2021-08-21 11:44:07,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:07,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 3388 transitions. [2021-08-21 11:44:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:44:07,259 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:07,259 INFO L512 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] [2021-08-21 11:44:07,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 11:44:07,259 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:44:07,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:07,259 INFO L82 PathProgramCache]: Analyzing trace with hash 747653005, now seen corresponding path program 3 times [2021-08-21 11:44:07,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:07,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847367532] [2021-08-21 11:44:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:07,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:07,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:07,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847367532] [2021-08-21 11:44:07,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847367532] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:07,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:07,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:44:07,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155050680] [2021-08-21 11:44:07,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:44:07,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:07,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:44:07,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:44:07,327 INFO L87 Difference]: Start difference. First operand 1146 states and 3388 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:07,389 INFO L93 Difference]: Finished difference Result 1629 states and 4829 transitions. [2021-08-21 11:44:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 11:44:07,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-08-21 11:44:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:07,393 INFO L225 Difference]: With dead ends: 1629 [2021-08-21 11:44:07,393 INFO L226 Difference]: Without dead ends: 806 [2021-08-21 11:44:07,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:44:07,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-08-21 11:44:07,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2021-08-21 11:44:07,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 2.8732919254658387) internal successors, (2313), 805 states have internal predecessors, (2313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2313 transitions. [2021-08-21 11:44:07,406 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2313 transitions. Word has length 62 [2021-08-21 11:44:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:07,406 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 2313 transitions. [2021-08-21 11:44:07,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:07,406 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2313 transitions. [2021-08-21 11:44:07,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-21 11:44:07,408 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:07,408 INFO L512 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] [2021-08-21 11:44:07,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 11:44:07,408 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-21 11:44:07,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:07,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1857273533, now seen corresponding path program 4 times [2021-08-21 11:44:07,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:07,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509198024] [2021-08-21 11:44:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:07,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:07,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:07,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509198024] [2021-08-21 11:44:07,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509198024] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:07,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:07,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-21 11:44:07,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963161339] [2021-08-21 11:44:07,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-21 11:44:07,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:07,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-21 11:44:07,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-21 11:44:07,489 INFO L87 Difference]: Start difference. First operand 806 states and 2313 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:07,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:07,543 INFO L93 Difference]: Finished difference Result 752 states and 2151 transitions. [2021-08-21 11:44:07,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-21 11:44:07,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-08-21 11:44:07,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:07,544 INFO L225 Difference]: With dead ends: 752 [2021-08-21 11:44:07,544 INFO L226 Difference]: Without dead ends: 0 [2021-08-21 11:44:07,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:44:07,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-21 11:44:07,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-21 11:44:07,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-21 11:44:07,545 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-08-21 11:44:07,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:07,545 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-21 11:44:07,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-21 11:44:07,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-21 11:44:07,547 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:44:07,547 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 11:44:07,547 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 11:44:07,548 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 11:44:07,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 11:44:07,551 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 11:44:07,551 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 11:44:07,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:44:07 BasicIcfg [2021-08-21 11:44:07,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 11:44:07,553 INFO L168 Benchmark]: Toolchain (without parser) took 3524.34 ms. Allocated memory was 206.6 MB in the beginning and 428.9 MB in the end (delta: 222.3 MB). Free memory was 169.5 MB in the beginning and 342.2 MB in the end (delta: -172.7 MB). Peak memory consumption was 50.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:44:07,553 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 206.6 MB. Free memory is still 188.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 11:44:07,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.23 ms. Allocated memory is still 206.6 MB. Free memory was 169.5 MB in the beginning and 179.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. [2021-08-21 11:44:07,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.72 ms. Allocated memory is still 206.6 MB. Free memory was 179.0 MB in the beginning and 176.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:44:07,554 INFO L168 Benchmark]: Boogie Preprocessor took 30.27 ms. Allocated memory is still 206.6 MB. Free memory was 176.9 MB in the beginning and 175.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:44:07,554 INFO L168 Benchmark]: RCFGBuilder took 348.91 ms. Allocated memory is still 206.6 MB. Free memory was 175.3 MB in the beginning and 150.7 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:44:07,555 INFO L168 Benchmark]: TraceAbstraction took 2726.67 ms. Allocated memory was 206.6 MB in the beginning and 428.9 MB in the end (delta: 222.3 MB). Free memory was 150.2 MB in the beginning and 342.2 MB in the end (delta: -192.0 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. [2021-08-21 11:44:07,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 206.6 MB. Free memory is still 188.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 367.23 ms. Allocated memory is still 206.6 MB. Free memory was 169.5 MB in the beginning and 179.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.72 ms. Allocated memory is still 206.6 MB. Free memory was 179.0 MB in the beginning and 176.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.27 ms. Allocated memory is still 206.6 MB. Free memory was 176.9 MB in the beginning and 175.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 348.91 ms. Allocated memory is still 206.6 MB. Free memory was 175.3 MB in the beginning and 150.7 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2726.67 ms. Allocated memory was 206.6 MB in the beginning and 428.9 MB in the end (delta: 222.3 MB). Free memory was 150.2 MB in the beginning and 342.2 MB in the end (delta: -192.0 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2662.0ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 90.4ms, AutomataDifference: 978.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 150.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 724 SDtfs, 919 SDslu, 2705 SDs, 0 SdLazy, 256 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 192.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 588.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5560occurred in iteration=0, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 429.5ms AutomataMinimizationTime, 7 MinimizatonAttempts, 228 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.7ms SsaConstructionTime, 116.8ms SatisfiabilityAnalysisTime, 727.9ms InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 403 ConstructedInterpolants, 0 QuantifiedInterpolants, 1177 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-21 11:44:07,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...