/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/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:28:32,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:28:32,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:28:32,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:28:32,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:28:32,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:28:32,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:28:32,187 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 17:28:32,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:28:32,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:28:32,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:28:32,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:28:32,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:28:32,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:28:32,211 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:28:32,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:28:32,212 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:28:32,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:28:32,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:28:32,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:28:32,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:28:32,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:28:32,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:28:32,213 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:28:32,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:28:32,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:28:32,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:28:32,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:28:32,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:28:32,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:28:32,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:28:32,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:28:32,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:28:32,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:28:32,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:28:32,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:28:32,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:28:32,214 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:28:32,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:28:32,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:28:32,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:28:32,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:28:32,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:28:32,448 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:28:32,449 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:28:32,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2021-03-10 17:28:32,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b423e91d3/ce70a57e44a44bafbae39cf8a30ecafb/FLAG3c7914237 [2021-03-10 17:28:32,908 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:28:32,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2021-03-10 17:28:32,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b423e91d3/ce70a57e44a44bafbae39cf8a30ecafb/FLAG3c7914237 [2021-03-10 17:28:33,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b423e91d3/ce70a57e44a44bafbae39cf8a30ecafb [2021-03-10 17:28:33,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:28:33,260 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:28:33,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:28:33,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:28:33,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:28:33,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:28:33" (1/1) ... [2021-03-10 17:28:33,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21803fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33, skipping insertion in model container [2021-03-10 17:28:33,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:28:33" (1/1) ... [2021-03-10 17:28:33,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:28:33,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:28:33,371 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/safe004_tso.opt.i[949,962] [2021-03-10 17:28:33,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:28:33,499 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:28:33,507 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/safe004_tso.opt.i[949,962] [2021-03-10 17:28:33,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:28:33,565 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:28:33,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33 WrapperNode [2021-03-10 17:28:33,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:28:33,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:28:33,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:28:33,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:28:33,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33" (1/1) ... [2021-03-10 17:28:33,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33" (1/1) ... [2021-03-10 17:28:33,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:28:33,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:28:33,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:28:33,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:28:33,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33" (1/1) ... [2021-03-10 17:28:33,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33" (1/1) ... [2021-03-10 17:28:33,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33" (1/1) ... [2021-03-10 17:28:33,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33" (1/1) ... [2021-03-10 17:28:33,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33" (1/1) ... [2021-03-10 17:28:33,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33" (1/1) ... [2021-03-10 17:28:33,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33" (1/1) ... [2021-03-10 17:28:33,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:28:33,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:28:33,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:28:33,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:28:33,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33" (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 17:28:33,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:28:33,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:28:33,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:28:33,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:28:33,699 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:28:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:28:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:28:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:28:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:28:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:28:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:28:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:28:33,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:28:33,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:28:33,702 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 17:28:34,006 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:28:34,006 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:28:34,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:28:34 BoogieIcfgContainer [2021-03-10 17:28:34,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:28:34,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:28:34,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:28:34,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:28:34,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:28:33" (1/3) ... [2021-03-10 17:28:34,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4fd573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:28:34, skipping insertion in model container [2021-03-10 17:28:34,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:28:33" (2/3) ... [2021-03-10 17:28:34,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4fd573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:28:34, skipping insertion in model container [2021-03-10 17:28:34,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:28:34" (3/3) ... [2021-03-10 17:28:34,012 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2021-03-10 17:28:34,019 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:28:34,019 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:28:34,022 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:28:34,022 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:28:34,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,050 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,050 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,051 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,051 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,051 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,051 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,052 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,052 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,052 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,052 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,053 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,053 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,053 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,054 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,056 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,056 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,057 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,057 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,064 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,065 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,069 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,069 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:28:34,071 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:28:34,082 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:28:34,102 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:28:34,102 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:28:34,102 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:28:34,102 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:28:34,102 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:28:34,102 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:28:34,102 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:28:34,102 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:28:34,110 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 74 transitions, 163 flow [2021-03-10 17:28:34,496 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 0 states have call successors, (0), 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 17:28:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 0 states have call successors, (0), 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 17:28:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 17:28:34,554 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:34,555 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] [2021-03-10 17:28:34,555 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:34,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1095445389, now seen corresponding path program 1 times [2021-03-10 17:28:34,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:34,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445026197] [2021-03-10 17:28:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:34,916 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 17:28:34,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445026197] [2021-03-10 17:28:34,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:34,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:28:34,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067437623] [2021-03-10 17:28:34,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:28:34,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:34,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:28:34,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:28:34,958 INFO L87 Difference]: Start difference. First operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 0 states have call successors, (0), 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 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 17:28:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:35,462 INFO L93 Difference]: Finished difference Result 13779 states and 48106 transitions. [2021-03-10 17:28:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:28:35,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-03-10 17:28:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:35,499 INFO L225 Difference]: With dead ends: 13779 [2021-03-10 17:28:35,499 INFO L226 Difference]: Without dead ends: 3484 [2021-03-10 17:28:35,500 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 299.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:28:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2021-03-10 17:28:35,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 3124. [2021-03-10 17:28:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 3123 states have (on average 3.22318283701569) internal successors, (10066), 3123 states have internal predecessors, (10066), 0 states have call successors, (0), 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 17:28:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 10066 transitions. [2021-03-10 17:28:35,690 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 10066 transitions. Word has length 39 [2021-03-10 17:28:35,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:35,691 INFO L480 AbstractCegarLoop]: Abstraction has 3124 states and 10066 transitions. [2021-03-10 17:28:35,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 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 17:28:35,693 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 10066 transitions. [2021-03-10 17:28:35,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:28:35,698 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:35,699 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 17:28:35,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:28:35,703 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:35,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:35,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1764619247, now seen corresponding path program 1 times [2021-03-10 17:28:35,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:35,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157506883] [2021-03-10 17:28:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:35,824 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 17:28:35,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157506883] [2021-03-10 17:28:35,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:35,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:28:35,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961715236] [2021-03-10 17:28:35,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:28:35,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:35,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:28:35,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:28:35,849 INFO L87 Difference]: Start difference. First operand 3124 states and 10066 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 17:28:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:36,089 INFO L93 Difference]: Finished difference Result 4090 states and 13142 transitions. [2021-03-10 17:28:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:28:36,090 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 17:28:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:36,101 INFO L225 Difference]: With dead ends: 4090 [2021-03-10 17:28:36,102 INFO L226 Difference]: Without dead ends: 2983 [2021-03-10 17:28:36,102 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 209.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:28:36,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2021-03-10 17:28:36,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 2763. [2021-03-10 17:28:36,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 3.1962346125995653) internal successors, (8828), 2762 states have internal predecessors, (8828), 0 states have call successors, (0), 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 17:28:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 8828 transitions. [2021-03-10 17:28:36,163 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 8828 transitions. Word has length 43 [2021-03-10 17:28:36,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:36,164 INFO L480 AbstractCegarLoop]: Abstraction has 2763 states and 8828 transitions. [2021-03-10 17:28:36,164 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 17:28:36,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 8828 transitions. [2021-03-10 17:28:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:28:36,170 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:36,170 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 17:28:36,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:28:36,171 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:36,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2134644693, now seen corresponding path program 1 times [2021-03-10 17:28:36,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:36,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040212316] [2021-03-10 17:28:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:36,370 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 17:28:36,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040212316] [2021-03-10 17:28:36,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:36,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:28:36,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146035770] [2021-03-10 17:28:36,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:28:36,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:36,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:28:36,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:28:36,371 INFO L87 Difference]: Start difference. First operand 2763 states and 8828 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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 17:28:36,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:36,577 INFO L93 Difference]: Finished difference Result 3895 states and 12253 transitions. [2021-03-10 17:28:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:28:36,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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 17:28:36,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:36,586 INFO L225 Difference]: With dead ends: 3895 [2021-03-10 17:28:36,586 INFO L226 Difference]: Without dead ends: 2195 [2021-03-10 17:28:36,587 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 218.4ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:28:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2021-03-10 17:28:36,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2003. [2021-03-10 17:28:36,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 3.064935064935065) internal successors, (6136), 2002 states have internal predecessors, (6136), 0 states have call successors, (0), 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 17:28:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 6136 transitions. [2021-03-10 17:28:36,626 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 6136 transitions. Word has length 44 [2021-03-10 17:28:36,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:36,626 INFO L480 AbstractCegarLoop]: Abstraction has 2003 states and 6136 transitions. [2021-03-10 17:28:36,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 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 17:28:36,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 6136 transitions. [2021-03-10 17:28:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:28:36,629 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:36,629 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] [2021-03-10 17:28:36,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:28:36,629 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:36,631 INFO L82 PathProgramCache]: Analyzing trace with hash -194438436, now seen corresponding path program 1 times [2021-03-10 17:28:36,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:36,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186887556] [2021-03-10 17:28:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:36,756 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 17:28:36,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186887556] [2021-03-10 17:28:36,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:36,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:28:36,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913369179] [2021-03-10 17:28:36,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:28:36,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:36,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:28:36,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:28:36,758 INFO L87 Difference]: Start difference. First operand 2003 states and 6136 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 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 17:28:36,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:36,975 INFO L93 Difference]: Finished difference Result 2311 states and 7050 transitions. [2021-03-10 17:28:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 17:28:36,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-03-10 17:28:36,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:36,981 INFO L225 Difference]: With dead ends: 2311 [2021-03-10 17:28:36,981 INFO L226 Difference]: Without dead ends: 1207 [2021-03-10 17:28:36,981 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 205.4ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-03-10 17:28:36,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2021-03-10 17:28:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1193. [2021-03-10 17:28:37,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 1192 states have (on average 3.021812080536913) internal successors, (3602), 1192 states have internal predecessors, (3602), 0 states have call successors, (0), 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 17:28:37,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 3602 transitions. [2021-03-10 17:28:37,015 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 3602 transitions. Word has length 46 [2021-03-10 17:28:37,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:37,015 INFO L480 AbstractCegarLoop]: Abstraction has 1193 states and 3602 transitions. [2021-03-10 17:28:37,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 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 17:28:37,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 3602 transitions. [2021-03-10 17:28:37,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:28:37,017 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:37,017 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 17:28:37,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:28:37,017 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:37,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:37,018 INFO L82 PathProgramCache]: Analyzing trace with hash -811822384, now seen corresponding path program 1 times [2021-03-10 17:28:37,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:37,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090461557] [2021-03-10 17:28:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:37,107 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 17:28:37,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090461557] [2021-03-10 17:28:37,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:37,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:28:37,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271769041] [2021-03-10 17:28:37,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:28:37,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:37,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:28:37,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:28:37,108 INFO L87 Difference]: Start difference. First operand 1193 states and 3602 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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 17:28:37,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:37,228 INFO L93 Difference]: Finished difference Result 1388 states and 4132 transitions. [2021-03-10 17:28:37,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:28:37,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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 17:28:37,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:37,232 INFO L225 Difference]: With dead ends: 1388 [2021-03-10 17:28:37,232 INFO L226 Difference]: Without dead ends: 1028 [2021-03-10 17:28:37,232 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:28:37,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-03-10 17:28:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1028. [2021-03-10 17:28:37,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1027 states have (on average 2.966893865628043) internal successors, (3047), 1027 states have internal predecessors, (3047), 0 states have call successors, (0), 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 17:28:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 3047 transitions. [2021-03-10 17:28:37,249 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 3047 transitions. Word has length 47 [2021-03-10 17:28:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:37,249 INFO L480 AbstractCegarLoop]: Abstraction has 1028 states and 3047 transitions. [2021-03-10 17:28:37,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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 17:28:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 3047 transitions. [2021-03-10 17:28:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:28:37,251 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:37,251 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, 1] [2021-03-10 17:28:37,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:28:37,251 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:37,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:37,252 INFO L82 PathProgramCache]: Analyzing trace with hash -433300137, now seen corresponding path program 1 times [2021-03-10 17:28:37,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:37,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814035741] [2021-03-10 17:28:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:37,333 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 17:28:37,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814035741] [2021-03-10 17:28:37,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:37,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:28:37,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766013826] [2021-03-10 17:28:37,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:28:37,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:37,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:28:37,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:28:37,334 INFO L87 Difference]: Start difference. First operand 1028 states and 3047 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 17:28:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:37,426 INFO L93 Difference]: Finished difference Result 920 states and 2627 transitions. [2021-03-10 17:28:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:28:37,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-03-10 17:28:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:37,429 INFO L225 Difference]: With dead ends: 920 [2021-03-10 17:28:37,429 INFO L226 Difference]: Without dead ends: 668 [2021-03-10 17:28:37,430 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:28:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-03-10 17:28:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2021-03-10 17:28:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 2.7916041979010493) internal successors, (1862), 667 states have internal predecessors, (1862), 0 states have call successors, (0), 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 17:28:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1862 transitions. [2021-03-10 17:28:37,441 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1862 transitions. Word has length 48 [2021-03-10 17:28:37,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:37,441 INFO L480 AbstractCegarLoop]: Abstraction has 668 states and 1862 transitions. [2021-03-10 17:28:37,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 17:28:37,441 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1862 transitions. [2021-03-10 17:28:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 17:28:37,442 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:28:37,442 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, 1, 1] [2021-03-10 17:28:37,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:28:37,442 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:28:37,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:28:37,443 INFO L82 PathProgramCache]: Analyzing trace with hash 412107084, now seen corresponding path program 1 times [2021-03-10 17:28:37,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:28:37,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476689524] [2021-03-10 17:28:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:28:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:28:37,511 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 17:28:37,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476689524] [2021-03-10 17:28:37,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:28:37,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:28:37,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869886271] [2021-03-10 17:28:37,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:28:37,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:28:37,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:28:37,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:28:37,513 INFO L87 Difference]: Start difference. First operand 668 states and 1862 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 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 17:28:37,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:28:37,574 INFO L93 Difference]: Finished difference Result 371 states and 971 transitions. [2021-03-10 17:28:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:28:37,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-03-10 17:28:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:28:37,575 INFO L225 Difference]: With dead ends: 371 [2021-03-10 17:28:37,575 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:28:37,575 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:28:37,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:28:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:28:37,575 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 17:28:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:28:37,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-03-10 17:28:37,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:28:37,576 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:28:37,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 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 17:28:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:28:37,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:28:37,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:28:37,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:28:37 BasicIcfg [2021-03-10 17:28:37,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:28:37,581 INFO L168 Benchmark]: Toolchain (without parser) took 4322.32 ms. Allocated memory was 255.9 MB in the beginning and 704.6 MB in the end (delta: 448.8 MB). Free memory was 234.9 MB in the beginning and 492.3 MB in the end (delta: -257.5 MB). Peak memory consumption was 190.9 MB. Max. memory is 16.0 GB. [2021-03-10 17:28:37,582 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:28:37,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.56 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 234.2 MB in the beginning and 323.7 MB in the end (delta: -89.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-10 17:28:37,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.10 ms. Allocated memory is still 360.7 MB. Free memory was 323.7 MB in the beginning and 321.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:28:37,583 INFO L168 Benchmark]: Boogie Preprocessor took 25.90 ms. Allocated memory is still 360.7 MB. Free memory was 321.6 MB in the beginning and 320.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:28:37,583 INFO L168 Benchmark]: RCFGBuilder took 386.56 ms. Allocated memory is still 360.7 MB. Free memory was 320.3 MB in the beginning and 298.5 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-10 17:28:37,584 INFO L168 Benchmark]: TraceAbstraction took 3571.20 ms. Allocated memory was 360.7 MB in the beginning and 704.6 MB in the end (delta: 343.9 MB). Free memory was 297.9 MB in the beginning and 492.3 MB in the end (delta: -194.4 MB). Peak memory consumption was 152.6 MB. Max. memory is 16.0 GB. [2021-03-10 17:28:37,585 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 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 304.56 ms. Allocated memory was 255.9 MB in the beginning and 360.7 MB in the end (delta: 104.9 MB). Free memory was 234.2 MB in the beginning and 323.7 MB in the end (delta: -89.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 28.10 ms. Allocated memory is still 360.7 MB. Free memory was 323.7 MB in the beginning and 321.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.90 ms. Allocated memory is still 360.7 MB. Free memory was 321.6 MB in the beginning and 320.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 386.56 ms. Allocated memory is still 360.7 MB. Free memory was 320.3 MB in the beginning and 298.5 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3571.20 ms. Allocated memory was 360.7 MB in the beginning and 704.6 MB in the end (delta: 343.9 MB). Free memory was 297.9 MB in the beginning and 492.3 MB in the end (delta: -194.4 MB). Peak memory consumption was 152.6 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3476.5ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 75.5ms, AutomataDifference: 1577.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 394.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 667 SDtfs, 1167 SDslu, 2304 SDs, 0 SdLazy, 299 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 288.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1221.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8818occurred in iteration=0, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 341.8ms AutomataMinimizationTime, 7 MinimizatonAttempts, 786 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.5ms SsaConstructionTime, 148.9ms SatisfiabilityAnalysisTime, 771.2ms InterpolantComputationTime, 316 NumberOfCodeBlocks, 316 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 1303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...