/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-344d29da17dfcedfb91d6006a5dbd12b556a868d-344d29d [2021-02-16 17:20:26,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-16 17:20:26,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-16 17:20:26,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-16 17:20:26,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-16 17:20:26,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-16 17:20:26,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-16 17:20:26,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-16 17:20:26,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-16 17:20:26,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-16 17:20:26,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-16 17:20:26,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-16 17:20:26,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-16 17:20:26,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-16 17:20:26,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-16 17:20:26,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-16 17:20:26,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-16 17:20:26,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-16 17:20:26,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-16 17:20:26,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-16 17:20:26,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-16 17:20:26,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-16 17:20:26,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-16 17:20:26,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-16 17:20:26,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-16 17:20:26,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-16 17:20:26,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-16 17:20:26,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-16 17:20:26,442 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 [2021-02-16 17:20:26,493 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-16 17:20:26,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-16 17:20:26,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-16 17:20:26,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-16 17:20:26,498 INFO L138 SettingsManager]: * Use SBE=true [2021-02-16 17:20:26,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-16 17:20:26,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-16 17:20:26,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-16 17:20:26,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-16 17:20:26,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-16 17:20:26,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-16 17:20:26,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-16 17:20:26,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-16 17:20:26,501 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-16 17:20:26,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-16 17:20:26,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-16 17:20:26,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-16 17:20:26,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-16 17:20:26,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-16 17:20:26,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-16 17:20:26,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-16 17:20:26,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-16 17:20:26,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-16 17:20:26,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-16 17:20:26,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-16 17:20:26,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-16 17:20:26,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-16 17:20:26,504 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-16 17:20:26,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-16 17:20:26,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-16 17:20:26,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-16 17:20:26,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-16 17:20:26,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-16 17:20:26,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-16 17:20:26,964 INFO L275 PluginConnector]: CDTParser initialized [2021-02-16 17:20:26,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2021-02-16 17:20:27,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20ee7ea4/adf0ebb413194dc9bb38b0a407babb1d/FLAG64a952486 [2021-02-16 17:20:27,747 INFO L306 CDTParser]: Found 1 translation units. [2021-02-16 17:20:27,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2021-02-16 17:20:27,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20ee7ea4/adf0ebb413194dc9bb38b0a407babb1d/FLAG64a952486 [2021-02-16 17:20:28,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20ee7ea4/adf0ebb413194dc9bb38b0a407babb1d [2021-02-16 17:20:28,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-16 17:20:28,077 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-02-16 17:20:28,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-16 17:20:28,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-16 17:20:28,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-16 17:20:28,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 05:20:28" (1/1) ... [2021-02-16 17:20:28,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1520c345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28, skipping insertion in model container [2021-02-16 17:20:28,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 05:20:28" (1/1) ... [2021-02-16 17:20:28,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-16 17:20:28,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-16 17:20:28,299 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/safe005_tso.oepc.i[950,963] [2021-02-16 17:20:28,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-16 17:20:28,496 INFO L203 MainTranslator]: Completed pre-run [2021-02-16 17:20:28,511 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/safe005_tso.oepc.i[950,963] [2021-02-16 17:20:28,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-16 17:20:28,642 INFO L208 MainTranslator]: Completed translation [2021-02-16 17:20:28,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28 WrapperNode [2021-02-16 17:20:28,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-16 17:20:28,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-16 17:20:28,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-16 17:20:28,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-16 17:20:28,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28" (1/1) ... [2021-02-16 17:20:28,671 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28" (1/1) ... [2021-02-16 17:20:28,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-16 17:20:28,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-16 17:20:28,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-16 17:20:28,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-16 17:20:28,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28" (1/1) ... [2021-02-16 17:20:28,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28" (1/1) ... [2021-02-16 17:20:28,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28" (1/1) ... [2021-02-16 17:20:28,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28" (1/1) ... [2021-02-16 17:20:28,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28" (1/1) ... [2021-02-16 17:20:28,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28" (1/1) ... [2021-02-16 17:20:28,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28" (1/1) ... [2021-02-16 17:20:28,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-16 17:20:28,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-16 17:20:28,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-16 17:20:28,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-16 17:20:28,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28" (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 [2021-02-16 17:20:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-16 17:20:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-02-16 17:20:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-16 17:20:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-16 17:20:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-02-16 17:20:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-02-16 17:20:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-02-16 17:20:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-02-16 17:20:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-02-16 17:20:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-02-16 17:20:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-16 17:20:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-02-16 17:20:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-16 17:20:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-16 17:20:28,891 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-16 17:20:29,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-16 17:20:29,293 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-16 17:20:29,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 05:20:29 BoogieIcfgContainer [2021-02-16 17:20:29,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-16 17:20:29,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-16 17:20:29,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-16 17:20:29,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-16 17:20:29,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 05:20:28" (1/3) ... [2021-02-16 17:20:29,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f34de3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 05:20:29, skipping insertion in model container [2021-02-16 17:20:29,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:20:28" (2/3) ... [2021-02-16 17:20:29,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f34de3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 05:20:29, skipping insertion in model container [2021-02-16 17:20:29,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 05:20:29" (3/3) ... [2021-02-16 17:20:29,304 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2021-02-16 17:20:29,310 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-16 17:20:29,311 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-16 17:20:29,315 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-16 17:20:29,316 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-16 17:20:29,354 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,355 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,355 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,355 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,355 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,356 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,356 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,357 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,358 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,358 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,359 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,359 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,361 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,361 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,363 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,365 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,365 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,365 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,365 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,370 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,371 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,371 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,371 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,374 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,374 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,374 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,375 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:20:29,377 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-02-16 17:20:29,397 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-02-16 17:20:29,420 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-16 17:20:29,420 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-16 17:20:29,420 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-16 17:20:29,420 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-16 17:20:29,420 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-16 17:20:29,420 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-16 17:20:29,421 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-16 17:20:29,421 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-16 17:20:29,433 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-02-16 17:20:30,136 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:20:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:20:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-16 17:20:30,250 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:20:30,252 INFO L505 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] [2021-02-16 17:20:30,252 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:20:30,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:20:30,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1037275097, now seen corresponding path program 1 times [2021-02-16 17:20:30,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:20:30,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591725995] [2021-02-16 17:20:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:20:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:20:30,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:30,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:30,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:30,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:20:30,674 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:20:30,676 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:20:30,701 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:20:30,703 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:20:30,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:30,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:20:30,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:30,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:20:30,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:30,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:20:30,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591725995] [2021-02-16 17:20:30,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:20:30,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:20:30,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575937229] [2021-02-16 17:20:30,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:20:30,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:20:30,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:20:30,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:20:30,848 INFO L87 Difference]: Start difference. First operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 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 5.714285714285714) 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) [2021-02-16 17:20:31,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:20:31,589 INFO L93 Difference]: Finished difference Result 14390 states and 49201 transitions. [2021-02-16 17:20:31,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-16 17:20:31,592 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 [2021-02-16 17:20:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:20:31,641 INFO L225 Difference]: With dead ends: 14390 [2021-02-16 17:20:31,641 INFO L226 Difference]: Without dead ends: 3445 [2021-02-16 17:20:31,643 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-16 17:20:31,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3445 states. [2021-02-16 17:20:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3445 to 2965. [2021-02-16 17:20:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2964 states have (on average 3.282388663967611) internal successors, (9729), 2964 states have internal predecessors, (9729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:20:31,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 9729 transitions. [2021-02-16 17:20:31,852 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 9729 transitions. Word has length 40 [2021-02-16 17:20:31,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:20:31,853 INFO L480 AbstractCegarLoop]: Abstraction has 2965 states and 9729 transitions. [2021-02-16 17:20:31,853 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) [2021-02-16 17:20:31,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 9729 transitions. [2021-02-16 17:20:31,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-16 17:20:31,862 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:20:31,862 INFO L505 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] [2021-02-16 17:20:31,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-16 17:20:31,863 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:20:31,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:20:31,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1030148587, now seen corresponding path program 1 times [2021-02-16 17:20:31,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:20:31,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291081420] [2021-02-16 17:20:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:20:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:20:32,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:32,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:32,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:32,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:20:32,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:32,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:20:32,034 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:20:32,036 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:20:32,061 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:20:32,063 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:20:32,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:32,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:20:32,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:32,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:20:32,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:32,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:20:32,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291081420] [2021-02-16 17:20:32,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:20:32,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-16 17:20:32,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454047617] [2021-02-16 17:20:32,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-16 17:20:32,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:20:32,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-16 17:20:32,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-16 17:20:32,139 INFO L87 Difference]: Start difference. First operand 2965 states and 9729 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2021-02-16 17:20:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:20:32,354 INFO L93 Difference]: Finished difference Result 5286 states and 17174 transitions. [2021-02-16 17:20:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-16 17:20:32,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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 [2021-02-16 17:20:32,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:20:32,379 INFO L225 Difference]: With dead ends: 5286 [2021-02-16 17:20:32,379 INFO L226 Difference]: Without dead ends: 3011 [2021-02-16 17:20:32,380 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-02-16 17:20:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2021-02-16 17:20:32,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2599. [2021-02-16 17:20:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 2598 states have (on average 3.212471131639723) internal successors, (8346), 2598 states have internal predecessors, (8346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:20:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 8346 transitions. [2021-02-16 17:20:32,539 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 8346 transitions. Word has length 45 [2021-02-16 17:20:32,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:20:32,540 INFO L480 AbstractCegarLoop]: Abstraction has 2599 states and 8346 transitions. [2021-02-16 17:20:32,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2021-02-16 17:20:32,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 8346 transitions. [2021-02-16 17:20:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-16 17:20:32,553 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:20:32,553 INFO L505 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] [2021-02-16 17:20:32,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-16 17:20:32,554 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:20:32,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:20:32,556 INFO L82 PathProgramCache]: Analyzing trace with hash -273703259, now seen corresponding path program 1 times [2021-02-16 17:20:32,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:20:32,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222505808] [2021-02-16 17:20:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:20:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:20:32,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:32,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:32,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:32,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:20:32,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:32,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:20:32,710 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:20:32,711 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:20:32,738 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:20:32,740 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:20:32,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:32,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:20:32,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:32,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:20:32,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:32,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:20:32,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222505808] [2021-02-16 17:20:32,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:20:32,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-16 17:20:32,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090771875] [2021-02-16 17:20:32,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-16 17:20:32,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:20:32,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-16 17:20:32,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-16 17:20:32,818 INFO L87 Difference]: Start difference. First operand 2599 states and 8346 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) [2021-02-16 17:20:33,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:20:33,150 INFO L93 Difference]: Finished difference Result 5095 states and 16170 transitions. [2021-02-16 17:20:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-16 17:20:33,151 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 [2021-02-16 17:20:33,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:20:33,172 INFO L225 Difference]: With dead ends: 5095 [2021-02-16 17:20:33,173 INFO L226 Difference]: Without dead ends: 2723 [2021-02-16 17:20:33,173 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-02-16 17:20:33,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-02-16 17:20:33,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1891. [2021-02-16 17:20:33,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 3.1206349206349207) internal successors, (5898), 1890 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:20:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 5898 transitions. [2021-02-16 17:20:33,254 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 5898 transitions. Word has length 46 [2021-02-16 17:20:33,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:20:33,255 INFO L480 AbstractCegarLoop]: Abstraction has 1891 states and 5898 transitions. [2021-02-16 17:20:33,256 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) [2021-02-16 17:20:33,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 5898 transitions. [2021-02-16 17:20:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-16 17:20:33,261 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:20:33,261 INFO L505 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] [2021-02-16 17:20:33,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-16 17:20:33,261 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:20:33,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:20:33,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1754830538, now seen corresponding path program 1 times [2021-02-16 17:20:33,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:20:33,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637260021] [2021-02-16 17:20:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:20:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:20:33,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:33,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:33,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:33,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:20:33,329 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-16 17:20:33,330 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-16 17:20:33,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:33,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-16 17:20:33,370 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-16 17:20:33,372 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-16 17:20:33,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:33,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:20:33,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637260021] [2021-02-16 17:20:33,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:20:33,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-16 17:20:33,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163300692] [2021-02-16 17:20:33,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-16 17:20:33,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:20:33,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-16 17:20:33,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-16 17:20:33,394 INFO L87 Difference]: Start difference. First operand 1891 states and 5898 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2021-02-16 17:20:33,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:20:33,599 INFO L93 Difference]: Finished difference Result 2444 states and 7556 transitions. [2021-02-16 17:20:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-16 17:20:33,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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 [2021-02-16 17:20:33,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:20:33,614 INFO L225 Difference]: With dead ends: 2444 [2021-02-16 17:20:33,614 INFO L226 Difference]: Without dead ends: 1704 [2021-02-16 17:20:33,615 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:20:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2021-02-16 17:20:33,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1704. [2021-02-16 17:20:33,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 3.094539048737522) internal successors, (5270), 1703 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:20:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 5270 transitions. [2021-02-16 17:20:33,671 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 5270 transitions. Word has length 48 [2021-02-16 17:20:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:20:33,673 INFO L480 AbstractCegarLoop]: Abstraction has 1704 states and 5270 transitions. [2021-02-16 17:20:33,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2021-02-16 17:20:33,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 5270 transitions. [2021-02-16 17:20:33,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-16 17:20:33,677 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:20:33,678 INFO L505 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] [2021-02-16 17:20:33,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-16 17:20:33,678 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:20:33,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:20:33,679 INFO L82 PathProgramCache]: Analyzing trace with hash -494502633, now seen corresponding path program 1 times [2021-02-16 17:20:33,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:20:33,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362359200] [2021-02-16 17:20:33,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:20:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:20:33,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:33,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:33,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:33,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:20:33,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:33,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:20:33,762 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-16 17:20:33,763 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-16 17:20:33,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:33,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-16 17:20:33,810 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-16 17:20:33,815 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-16 17:20:33,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:33,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:20:33,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362359200] [2021-02-16 17:20:33,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:20:33,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:20:33,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203679455] [2021-02-16 17:20:33,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:20:33,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:20:33,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:20:33,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:20:33,838 INFO L87 Difference]: Start difference. First operand 1704 states and 5270 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2021-02-16 17:20:34,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:20:34,050 INFO L93 Difference]: Finished difference Result 1914 states and 5812 transitions. [2021-02-16 17:20:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-16 17:20:34,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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 [2021-02-16 17:20:34,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:20:34,061 INFO L225 Difference]: With dead ends: 1914 [2021-02-16 17:20:34,061 INFO L226 Difference]: Without dead ends: 1314 [2021-02-16 17:20:34,062 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-02-16 17:20:34,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2021-02-16 17:20:34,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1314. [2021-02-16 17:20:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1313 states have (on average 2.993145468392993) internal successors, (3930), 1313 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:20:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 3930 transitions. [2021-02-16 17:20:34,104 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 3930 transitions. Word has length 49 [2021-02-16 17:20:34,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:20:34,105 INFO L480 AbstractCegarLoop]: Abstraction has 1314 states and 3930 transitions. [2021-02-16 17:20:34,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2021-02-16 17:20:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 3930 transitions. [2021-02-16 17:20:34,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-16 17:20:34,109 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:20:34,109 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:20:34,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-16 17:20:34,109 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:20:34,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:20:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1238647632, now seen corresponding path program 1 times [2021-02-16 17:20:34,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:20:34,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300642134] [2021-02-16 17:20:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:20:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:20:34,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:34,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:34,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:34,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:20:34,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:34,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:20:34,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:34,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:20:34,184 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-16 17:20:34,185 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-16 17:20:34,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:34,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-16 17:20:34,234 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-16 17:20:34,235 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-16 17:20:34,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:34,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:34,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:20:34,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300642134] [2021-02-16 17:20:34,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:20:34,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-16 17:20:34,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374965574] [2021-02-16 17:20:34,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-16 17:20:34,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:20:34,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-16 17:20:34,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-16 17:20:34,259 INFO L87 Difference]: Start difference. First operand 1314 states and 3930 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:20:34,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:20:34,487 INFO L93 Difference]: Finished difference Result 1143 states and 3297 transitions. [2021-02-16 17:20:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-16 17:20:34,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-02-16 17:20:34,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:20:34,494 INFO L225 Difference]: With dead ends: 1143 [2021-02-16 17:20:34,494 INFO L226 Difference]: Without dead ends: 783 [2021-02-16 17:20:34,494 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-16 17:20:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-02-16 17:20:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 751. [2021-02-16 17:20:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 2.752) internal successors, (2064), 750 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:20:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2064 transitions. [2021-02-16 17:20:34,519 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2064 transitions. Word has length 50 [2021-02-16 17:20:34,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:20:34,520 INFO L480 AbstractCegarLoop]: Abstraction has 751 states and 2064 transitions. [2021-02-16 17:20:34,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:20:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2064 transitions. [2021-02-16 17:20:34,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-16 17:20:34,522 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:20:34,523 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:20:34,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-16 17:20:34,523 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:20:34,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:20:34,523 INFO L82 PathProgramCache]: Analyzing trace with hash 339231951, now seen corresponding path program 1 times [2021-02-16 17:20:34,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:20:34,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910800562] [2021-02-16 17:20:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:20:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:20:34,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:34,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:34,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:34,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:20:34,583 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:20:34,584 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:20:34,600 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:20:34,602 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:20:34,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:34,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:20:34,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:34,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:20:34,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:20:34,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:20:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:20:34,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910800562] [2021-02-16 17:20:34,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:20:34,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:20:34,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996336261] [2021-02-16 17:20:34,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:20:34,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:20:34,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:20:34,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:20:34,670 INFO L87 Difference]: Start difference. First operand 751 states and 2064 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:20:34,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:20:34,861 INFO L93 Difference]: Finished difference Result 729 states and 1998 transitions. [2021-02-16 17:20:34,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-16 17:20:34,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-02-16 17:20:34,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:20:34,862 INFO L225 Difference]: With dead ends: 729 [2021-02-16 17:20:34,863 INFO L226 Difference]: Without dead ends: 0 [2021-02-16 17:20:34,863 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:20:34,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-16 17:20:34,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-16 17:20:34,864 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) [2021-02-16 17:20:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-16 17:20:34,864 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2021-02-16 17:20:34,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:20:34,864 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-16 17:20:34,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:20:34,865 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-16 17:20:34,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-16 17:20:34,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-16 17:20:34,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 05:20:34 BasicIcfg [2021-02-16 17:20:34,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-16 17:20:34,872 INFO L168 Benchmark]: Toolchain (without parser) took 6804.48 ms. Allocated memory was 302.0 MB in the beginning and 583.0 MB in the end (delta: 281.0 MB). Free memory was 277.1 MB in the beginning and 509.8 MB in the end (delta: -232.8 MB). Peak memory consumption was 50.9 MB. Max. memory is 16.0 GB. [2021-02-16 17:20:34,872 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 271.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-02-16 17:20:34,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 565.21 ms. Allocated memory is still 302.0 MB. Free memory was 276.0 MB in the beginning and 245.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-02-16 17:20:34,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.96 ms. Allocated memory is still 302.0 MB. Free memory was 245.1 MB in the beginning and 243.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-16 17:20:34,874 INFO L168 Benchmark]: Boogie Preprocessor took 91.63 ms. Allocated memory is still 302.0 MB. Free memory was 243.1 MB in the beginning and 284.9 MB in the end (delta: -41.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.0 GB. [2021-02-16 17:20:34,875 INFO L168 Benchmark]: RCFGBuilder took 509.22 ms. Allocated memory is still 302.0 MB. Free memory was 284.9 MB in the beginning and 261.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-02-16 17:20:34,875 INFO L168 Benchmark]: TraceAbstraction took 5573.43 ms. Allocated memory was 302.0 MB in the beginning and 583.0 MB in the end (delta: 281.0 MB). Free memory was 260.7 MB in the beginning and 509.8 MB in the end (delta: -249.1 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.0 GB. [2021-02-16 17:20:34,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 271.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 565.21 ms. Allocated memory is still 302.0 MB. Free memory was 276.0 MB in the beginning and 245.2 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.96 ms. Allocated memory is still 302.0 MB. Free memory was 245.1 MB in the beginning and 243.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 91.63 ms. Allocated memory is still 302.0 MB. Free memory was 243.1 MB in the beginning and 284.9 MB in the end (delta: -41.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.0 GB. * RCFGBuilder took 509.22 ms. Allocated memory is still 302.0 MB. Free memory was 284.9 MB in the beginning and 261.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5573.43 ms. Allocated memory was 302.0 MB in the beginning and 583.0 MB in the end (delta: 281.0 MB). Free memory was 260.7 MB in the beginning and 509.8 MB in the end (delta: -249.1 MB). Peak memory consumption was 34.0 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, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 654 SDtfs, 1211 SDslu, 2272 SDs, 0 SdLazy, 319 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 1756 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 57705 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...