/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:31:38,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:31:38,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:31:38,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:31:38,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:31:38,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:31:38,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:31:38,876 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 [2021-03-10 17:31:38,897 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:31:38,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:31:38,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:31:38,898 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:31:38,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:31:38,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:31:38,901 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:31:38,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:31:38,901 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:31:38,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:31:38,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:31:38,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:31:38,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:31:38,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:31:38,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:31:38,902 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:31:38,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:31:38,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:31:38,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:31:38,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:31:38,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:31:38,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:31:38,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:31:38,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:31:38,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:31:38,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:31:38,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:31:38,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:31:38,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:31:38,904 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:31:38,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:31:38,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:31:39,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:31:39,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:31:39,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:31:39,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:31:39,199 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:31:39,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2021-03-10 17:31:39,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca2aa10e/8563d26c60b94a5199e9106ae555da98/FLAG9deed3e40 [2021-03-10 17:31:39,708 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:31:39,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2021-03-10 17:31:39,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca2aa10e/8563d26c60b94a5199e9106ae555da98/FLAG9deed3e40 [2021-03-10 17:31:40,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca2aa10e/8563d26c60b94a5199e9106ae555da98 [2021-03-10 17:31:40,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:31:40,045 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:31:40,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:31:40,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:31:40,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:31:40,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:31:40" (1/1) ... [2021-03-10 17:31:40,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f4e155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40, skipping insertion in model container [2021-03-10 17:31:40,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:31:40" (1/1) ... [2021-03-10 17:31:40,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:31:40,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:31:40,181 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i[950,963] [2021-03-10 17:31:40,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:31:40,294 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:31:40,306 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i[950,963] [2021-03-10 17:31:40,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:31:40,405 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:31:40,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40 WrapperNode [2021-03-10 17:31:40,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:31:40,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:31:40,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:31:40,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:31:40,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40" (1/1) ... [2021-03-10 17:31:40,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40" (1/1) ... [2021-03-10 17:31:40,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:31:40,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:31:40,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:31:40,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:31:40,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40" (1/1) ... [2021-03-10 17:31:40,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40" (1/1) ... [2021-03-10 17:31:40,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40" (1/1) ... [2021-03-10 17:31:40,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40" (1/1) ... [2021-03-10 17:31:40,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40" (1/1) ... [2021-03-10 17:31:40,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40" (1/1) ... [2021-03-10 17:31:40,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40" (1/1) ... [2021-03-10 17:31:40,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:31:40,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:31:40,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:31:40,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:31:40,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:31:40,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:31:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:31:40,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:31:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:31:40,523 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:31:40,524 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:31:40,524 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:31:40,524 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:31:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:31:40,525 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:31:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:31:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:31:40,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:31:40,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:31:40,526 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:31:40,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:31:40,846 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:31:40,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:31:40 BoogieIcfgContainer [2021-03-10 17:31:40,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:31:40,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:31:40,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:31:40,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:31:40,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:31:40" (1/3) ... [2021-03-10 17:31:40,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a1be79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:31:40, skipping insertion in model container [2021-03-10 17:31:40,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:31:40" (2/3) ... [2021-03-10 17:31:40,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a1be79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:31:40, skipping insertion in model container [2021-03-10 17:31:40,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:31:40" (3/3) ... [2021-03-10 17:31:40,853 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2021-03-10 17:31:40,857 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:31:40,857 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:31:40,860 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:31:40,861 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:31:40,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,887 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,887 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,888 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,888 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,889 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,889 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,889 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,889 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,890 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,890 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,890 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,890 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,890 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,890 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,891 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,891 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,891 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,891 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,892 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,892 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,892 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,892 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,892 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,892 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,892 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,892 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,892 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,893 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,894 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,894 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,894 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,898 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,898 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,898 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,898 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,899 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,900 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:31:40,901 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:31:40,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:31:40,925 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:31:40,925 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:31:40,925 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:31:40,925 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:31:40,925 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:31:40,925 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:31:40,925 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:31:40,925 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:31:40,932 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 72 transitions, 159 flow [2021-03-10 17:31:41,313 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7564 states, 7562 states have (on average 3.5560698227982015) internal successors, (26891), 7563 states have internal predecessors, (26891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 7564 states, 7562 states have (on average 3.5560698227982015) internal successors, (26891), 7563 states have internal predecessors, (26891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-03-10 17:31:41,377 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:41,377 INFO L519 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] [2021-03-10 17:31:41,378 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:41,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:41,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1438712308, now seen corresponding path program 1 times [2021-03-10 17:31:41,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:41,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789064380] [2021-03-10 17:31:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:41,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789064380] [2021-03-10 17:31:41,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:41,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:31:41,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123647700] [2021-03-10 17:31:41,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:31:41,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:41,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:31:41,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:31:41,722 INFO L87 Difference]: Start difference. First operand has 7564 states, 7562 states have (on average 3.5560698227982015) internal successors, (26891), 7563 states have internal predecessors, (26891), 0 states have call successors, (0), 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 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:42,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:42,145 INFO L93 Difference]: Finished difference Result 18010 states and 61824 transitions. [2021-03-10 17:31:42,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:31:42,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-03-10 17:31:42,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:42,193 INFO L225 Difference]: With dead ends: 18010 [2021-03-10 17:31:42,193 INFO L226 Difference]: Without dead ends: 5668 [2021-03-10 17:31:42,194 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 153.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:31:42,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5668 states. [2021-03-10 17:31:42,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5668 to 4612. [2021-03-10 17:31:42,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 4611 states have (on average 3.3222728258512255) internal successors, (15319), 4611 states have internal predecessors, (15319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:42,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 15319 transitions. [2021-03-10 17:31:42,445 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 15319 transitions. Word has length 38 [2021-03-10 17:31:42,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:42,446 INFO L480 AbstractCegarLoop]: Abstraction has 4612 states and 15319 transitions. [2021-03-10 17:31:42,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:42,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 15319 transitions. [2021-03-10 17:31:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:31:42,457 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:42,458 INFO L519 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] [2021-03-10 17:31:42,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:31:42,462 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:42,464 INFO L82 PathProgramCache]: Analyzing trace with hash -397038283, now seen corresponding path program 1 times [2021-03-10 17:31:42,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:42,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054563871] [2021-03-10 17:31:42,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:42,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054563871] [2021-03-10 17:31:42,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:42,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:42,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191056196] [2021-03-10 17:31:42,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:42,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:42,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:42,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:42,642 INFO L87 Difference]: Start difference. First operand 4612 states and 15319 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:42,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:42,853 INFO L93 Difference]: Finished difference Result 6500 states and 21305 transitions. [2021-03-10 17:31:42,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:31:42,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-03-10 17:31:42,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:42,893 INFO L225 Difference]: With dead ends: 6500 [2021-03-10 17:31:42,893 INFO L226 Difference]: Without dead ends: 5020 [2021-03-10 17:31:42,894 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 172.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:31:42,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5020 states. [2021-03-10 17:31:42,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5020 to 3868. [2021-03-10 17:31:42,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3867 states have (on average 3.2984225497801916) internal successors, (12755), 3867 states have internal predecessors, (12755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 12755 transitions. [2021-03-10 17:31:43,006 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 12755 transitions. Word has length 40 [2021-03-10 17:31:43,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:43,007 INFO L480 AbstractCegarLoop]: Abstraction has 3868 states and 12755 transitions. [2021-03-10 17:31:43,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:43,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 12755 transitions. [2021-03-10 17:31:43,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:31:43,015 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:43,015 INFO L519 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] [2021-03-10 17:31:43,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:31:43,016 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:43,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:43,016 INFO L82 PathProgramCache]: Analyzing trace with hash -300260267, now seen corresponding path program 1 times [2021-03-10 17:31:43,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:43,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771531594] [2021-03-10 17:31:43,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:43,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771531594] [2021-03-10 17:31:43,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:43,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:43,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258087631] [2021-03-10 17:31:43,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:43,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:43,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:43,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:43,115 INFO L87 Difference]: Start difference. First operand 3868 states and 12755 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:43,312 INFO L93 Difference]: Finished difference Result 6096 states and 19799 transitions. [2021-03-10 17:31:43,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:31:43,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-03-10 17:31:43,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:43,332 INFO L225 Difference]: With dead ends: 6096 [2021-03-10 17:31:43,332 INFO L226 Difference]: Without dead ends: 4744 [2021-03-10 17:31:43,332 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 152.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:31:43,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4744 states. [2021-03-10 17:31:43,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4744 to 3632. [2021-03-10 17:31:43,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3632 states, 3631 states have (on average 3.273202974387221) internal successors, (11885), 3631 states have internal predecessors, (11885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 11885 transitions. [2021-03-10 17:31:43,419 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 11885 transitions. Word has length 40 [2021-03-10 17:31:43,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:43,419 INFO L480 AbstractCegarLoop]: Abstraction has 3632 states and 11885 transitions. [2021-03-10 17:31:43,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 11885 transitions. [2021-03-10 17:31:43,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 17:31:43,425 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:43,425 INFO L519 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] [2021-03-10 17:31:43,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:31:43,425 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:43,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:43,426 INFO L82 PathProgramCache]: Analyzing trace with hash -8679446, now seen corresponding path program 1 times [2021-03-10 17:31:43,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:43,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403021886] [2021-03-10 17:31:43,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:43,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403021886] [2021-03-10 17:31:43,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:43,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:43,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871959417] [2021-03-10 17:31:43,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:43,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:43,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:43,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:43,519 INFO L87 Difference]: Start difference. First operand 3632 states and 11885 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:43,665 INFO L93 Difference]: Finished difference Result 5128 states and 16627 transitions. [2021-03-10 17:31:43,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:31:43,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-03-10 17:31:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:43,686 INFO L225 Difference]: With dead ends: 5128 [2021-03-10 17:31:43,686 INFO L226 Difference]: Without dead ends: 4504 [2021-03-10 17:31:43,687 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:31:43,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4504 states. [2021-03-10 17:31:43,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4504 to 3584. [2021-03-10 17:31:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3584 states, 3583 states have (on average 3.266815517722579) internal successors, (11705), 3583 states have internal predecessors, (11705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:43,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3584 states to 3584 states and 11705 transitions. [2021-03-10 17:31:43,780 INFO L78 Accepts]: Start accepts. Automaton has 3584 states and 11705 transitions. Word has length 42 [2021-03-10 17:31:43,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:43,780 INFO L480 AbstractCegarLoop]: Abstraction has 3584 states and 11705 transitions. [2021-03-10 17:31:43,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:43,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3584 states and 11705 transitions. [2021-03-10 17:31:43,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:31:43,786 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:43,786 INFO L519 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] [2021-03-10 17:31:43,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:31:43,786 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:43,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:43,787 INFO L82 PathProgramCache]: Analyzing trace with hash -319700444, now seen corresponding path program 1 times [2021-03-10 17:31:43,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:43,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281972383] [2021-03-10 17:31:43,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:43,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281972383] [2021-03-10 17:31:43,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:43,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:43,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233116150] [2021-03-10 17:31:43,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:43,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:43,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:43,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:43,861 INFO L87 Difference]: Start difference. First operand 3584 states and 11705 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:44,019 INFO L93 Difference]: Finished difference Result 5816 states and 18543 transitions. [2021-03-10 17:31:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:31:44,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-03-10 17:31:44,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:44,031 INFO L225 Difference]: With dead ends: 5816 [2021-03-10 17:31:44,031 INFO L226 Difference]: Without dead ends: 4360 [2021-03-10 17:31:44,031 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:31:44,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2021-03-10 17:31:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 3288. [2021-03-10 17:31:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3287 states have (on average 3.228171585031944) internal successors, (10611), 3287 states have internal predecessors, (10611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 10611 transitions. [2021-03-10 17:31:44,115 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 10611 transitions. Word has length 43 [2021-03-10 17:31:44,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:44,115 INFO L480 AbstractCegarLoop]: Abstraction has 3288 states and 10611 transitions. [2021-03-10 17:31:44,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 10611 transitions. [2021-03-10 17:31:44,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:31:44,121 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:44,121 INFO L519 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] [2021-03-10 17:31:44,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:31:44,121 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:44,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:44,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1906880191, now seen corresponding path program 1 times [2021-03-10 17:31:44,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:44,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022091825] [2021-03-10 17:31:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:44,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022091825] [2021-03-10 17:31:44,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:44,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:44,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539019356] [2021-03-10 17:31:44,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:44,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:44,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:44,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:44,190 INFO L87 Difference]: Start difference. First operand 3288 states and 10611 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:44,337 INFO L93 Difference]: Finished difference Result 5720 states and 18239 transitions. [2021-03-10 17:31:44,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:31:44,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-03-10 17:31:44,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:44,349 INFO L225 Difference]: With dead ends: 5720 [2021-03-10 17:31:44,349 INFO L226 Difference]: Without dead ends: 4112 [2021-03-10 17:31:44,349 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:31:44,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2021-03-10 17:31:44,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 2872. [2021-03-10 17:31:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2871 states have (on average 3.175548589341693) internal successors, (9117), 2871 states have internal predecessors, (9117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 9117 transitions. [2021-03-10 17:31:44,411 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 9117 transitions. Word has length 43 [2021-03-10 17:31:44,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:44,412 INFO L480 AbstractCegarLoop]: Abstraction has 2872 states and 9117 transitions. [2021-03-10 17:31:44,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 9117 transitions. [2021-03-10 17:31:44,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:31:44,417 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:44,417 INFO L519 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] [2021-03-10 17:31:44,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:31:44,417 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:44,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:44,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1789480277, now seen corresponding path program 1 times [2021-03-10 17:31:44,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:44,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697012694] [2021-03-10 17:31:44,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:44,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697012694] [2021-03-10 17:31:44,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:44,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:44,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253399523] [2021-03-10 17:31:44,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:44,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:44,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:44,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:44,487 INFO L87 Difference]: Start difference. First operand 2872 states and 9117 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:44,555 INFO L93 Difference]: Finished difference Result 3860 states and 12066 transitions. [2021-03-10 17:31:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 17:31:44,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-03-10 17:31:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:44,561 INFO L225 Difference]: With dead ends: 3860 [2021-03-10 17:31:44,561 INFO L226 Difference]: Without dead ends: 1990 [2021-03-10 17:31:44,561 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 60.0ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:31:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2021-03-10 17:31:44,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1990. [2021-03-10 17:31:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1989 states have (on average 3.073403720462544) internal successors, (6113), 1989 states have internal predecessors, (6113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 6113 transitions. [2021-03-10 17:31:44,600 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 6113 transitions. Word has length 44 [2021-03-10 17:31:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:44,600 INFO L480 AbstractCegarLoop]: Abstraction has 1990 states and 6113 transitions. [2021-03-10 17:31:44,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 6113 transitions. [2021-03-10 17:31:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:31:44,604 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:44,604 INFO L519 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] [2021-03-10 17:31:44,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:31:44,605 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:44,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:44,605 INFO L82 PathProgramCache]: Analyzing trace with hash 643549717, now seen corresponding path program 2 times [2021-03-10 17:31:44,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:44,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136175419] [2021-03-10 17:31:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:44,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136175419] [2021-03-10 17:31:44,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:44,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:31:44,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380199217] [2021-03-10 17:31:44,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:31:44,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:44,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:31:44,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:31:44,671 INFO L87 Difference]: Start difference. First operand 1990 states and 6113 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:44,774 INFO L93 Difference]: Finished difference Result 2473 states and 7481 transitions. [2021-03-10 17:31:44,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:31:44,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-03-10 17:31:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:44,778 INFO L225 Difference]: With dead ends: 2473 [2021-03-10 17:31:44,778 INFO L226 Difference]: Without dead ends: 1801 [2021-03-10 17:31:44,779 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 88.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:31:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2021-03-10 17:31:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1801. [2021-03-10 17:31:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1800 states have (on average 3.0155555555555558) internal successors, (5428), 1800 states have internal predecessors, (5428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 5428 transitions. [2021-03-10 17:31:44,806 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 5428 transitions. Word has length 44 [2021-03-10 17:31:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:44,806 INFO L480 AbstractCegarLoop]: Abstraction has 1801 states and 5428 transitions. [2021-03-10 17:31:44,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 5428 transitions. [2021-03-10 17:31:44,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:31:44,808 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:44,809 INFO L519 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] [2021-03-10 17:31:44,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:31:44,809 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:44,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:44,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1221561789, now seen corresponding path program 1 times [2021-03-10 17:31:44,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:44,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276695594] [2021-03-10 17:31:44,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:44,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:44,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276695594] [2021-03-10 17:31:44,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:44,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:44,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031431171] [2021-03-10 17:31:44,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:44,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:44,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:44,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:44,857 INFO L87 Difference]: Start difference. First operand 1801 states and 5428 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:44,945 INFO L93 Difference]: Finished difference Result 1738 states and 5065 transitions. [2021-03-10 17:31:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:31:44,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-03-10 17:31:44,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:44,948 INFO L225 Difference]: With dead ends: 1738 [2021-03-10 17:31:44,948 INFO L226 Difference]: Without dead ends: 1158 [2021-03-10 17:31:44,948 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 70.7ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:31:44,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2021-03-10 17:31:44,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1158. [2021-03-10 17:31:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 2.835782195332757) internal successors, (3281), 1157 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 3281 transitions. [2021-03-10 17:31:44,964 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 3281 transitions. Word has length 45 [2021-03-10 17:31:44,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:44,964 INFO L480 AbstractCegarLoop]: Abstraction has 1158 states and 3281 transitions. [2021-03-10 17:31:44,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:44,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 3281 transitions. [2021-03-10 17:31:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:31:44,966 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:44,966 INFO L519 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] [2021-03-10 17:31:44,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 17:31:44,966 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:44,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:44,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2047296052, now seen corresponding path program 1 times [2021-03-10 17:31:44,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:44,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309499941] [2021-03-10 17:31:44,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:45,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309499941] [2021-03-10 17:31:45,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:45,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:31:45,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703221802] [2021-03-10 17:31:45,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:31:45,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:45,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:31:45,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:31:45,018 INFO L87 Difference]: Start difference. First operand 1158 states and 3281 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:45,075 INFO L93 Difference]: Finished difference Result 1577 states and 4437 transitions. [2021-03-10 17:31:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:31:45,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-03-10 17:31:45,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:45,078 INFO L225 Difference]: With dead ends: 1577 [2021-03-10 17:31:45,078 INFO L226 Difference]: Without dead ends: 1304 [2021-03-10 17:31:45,078 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 57.7ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:31:45,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-03-10 17:31:45,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1142. [2021-03-10 17:31:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 2.8299737072743207) internal successors, (3229), 1141 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 3229 transitions. [2021-03-10 17:31:45,094 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 3229 transitions. Word has length 47 [2021-03-10 17:31:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:45,094 INFO L480 AbstractCegarLoop]: Abstraction has 1142 states and 3229 transitions. [2021-03-10 17:31:45,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:45,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 3229 transitions. [2021-03-10 17:31:45,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:31:45,096 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:31:45,096 INFO L519 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] [2021-03-10 17:31:45,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 17:31:45,096 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:31:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:31:45,096 INFO L82 PathProgramCache]: Analyzing trace with hash 362189730, now seen corresponding path program 2 times [2021-03-10 17:31:45,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:31:45,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908464788] [2021-03-10 17:31:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:31:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:31:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:31:45,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908464788] [2021-03-10 17:31:45,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:31:45,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:31:45,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136903351] [2021-03-10 17:31:45,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:31:45,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:31:45,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:31:45,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:31:45,178 INFO L87 Difference]: Start difference. First operand 1142 states and 3229 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:31:45,248 INFO L93 Difference]: Finished difference Result 710 states and 1906 transitions. [2021-03-10 17:31:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:31:45,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-03-10 17:31:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:31:45,249 INFO L225 Difference]: With dead ends: 710 [2021-03-10 17:31:45,249 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:31:45,249 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 83.7ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:31:45,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:31:45,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:31:45,249 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) [2021-03-10 17:31:45,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:31:45,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2021-03-10 17:31:45,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:31:45,250 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:31:45,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:31:45,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:31:45,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:31:45,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-10 17:31:45,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:31:45 BasicIcfg [2021-03-10 17:31:45,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:31:45,255 INFO L168 Benchmark]: Toolchain (without parser) took 5211.83 ms. Allocated memory was 255.9 MB in the beginning and 834.7 MB in the end (delta: 578.8 MB). Free memory was 234.1 MB in the beginning and 570.2 MB in the end (delta: -336.1 MB). Peak memory consumption was 241.8 MB. Max. memory is 16.0 GB. [2021-03-10 17:31:45,255 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:31:45,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.76 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 233.6 MB in the beginning and 321.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-10 17:31:45,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.19 ms. Allocated memory is still 358.6 MB. Free memory was 321.5 MB in the beginning and 319.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:31:45,255 INFO L168 Benchmark]: Boogie Preprocessor took 13.75 ms. Allocated memory is still 358.6 MB. Free memory was 319.4 MB in the beginning and 318.5 MB in the end (delta: 860.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:31:45,256 INFO L168 Benchmark]: RCFGBuilder took 374.50 ms. Allocated memory is still 358.6 MB. Free memory was 318.5 MB in the beginning and 296.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:31:45,258 INFO L168 Benchmark]: TraceAbstraction took 4404.44 ms. Allocated memory was 358.6 MB in the beginning and 834.7 MB in the end (delta: 476.1 MB). Free memory was 296.3 MB in the beginning and 570.2 MB in the end (delta: -273.9 MB). Peak memory consumption was 203.4 MB. Max. memory is 16.0 GB. [2021-03-10 17:31:45,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 363.76 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 233.6 MB in the beginning and 321.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.19 ms. Allocated memory is still 358.6 MB. Free memory was 321.5 MB in the beginning and 319.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.75 ms. Allocated memory is still 358.6 MB. Free memory was 319.4 MB in the beginning and 318.5 MB in the end (delta: 860.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 374.50 ms. Allocated memory is still 358.6 MB. Free memory was 318.5 MB in the beginning and 296.3 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4404.44 ms. Allocated memory was 358.6 MB in the beginning and 834.7 MB in the end (delta: 476.1 MB). Free memory was 296.3 MB in the beginning and 570.2 MB in the end (delta: -273.9 MB). Peak memory consumption was 203.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4327.1ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 110.5ms, AutomataDifference: 1870.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 387.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1088 SDtfs, 1570 SDslu, 3775 SDs, 0 SdLazy, 467 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 309.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1186.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7564occurred in iteration=0, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 775.0ms AutomataMinimizationTime, 11 MinimizatonAttempts, 6714 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.3ms SsaConstructionTime, 135.2ms SatisfiabilityAnalysisTime, 860.0ms InterpolantComputationTime, 473 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 462 ConstructedInterpolants, 0 QuantifiedInterpolants, 1914 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...