/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/safe028_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:34:47,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:34:47,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:34:47,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:34:47,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 17:34:47,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 17:34:47,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 17:34:47,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 17:34:47,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 17:34:47,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 17:34:47,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 17:34:47,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 17:34:47,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 17:34:47,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 17:34:47,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 17:34:47,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 17:34:47,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-10 17:34:47,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:34:47,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:34:47,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:34:47,975 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 17:34:47,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:34:47,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:34:47,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:34:47,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:34:47,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:34:47,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:34:47,992 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:34:47,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:34:47,992 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:34:47,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:34:47,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:34:47,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:34:47,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:34:47,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:34:47,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:34:47,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:34:47,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:34:47,994 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:34:47,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:34:47,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:34:47,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:34:47,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:34:47,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:34:47,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:34:47,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:34:47,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:34:47,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:34:47,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:34:47,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:34:47,995 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:34:47,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:34:47,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:34:48,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:34:48,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:34:48,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:34:48,242 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:34:48,242 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:34:48,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.oepc.i [2021-03-10 17:34:48,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa8f64b5/ba2d25caa9c848a1968bdd24a5777406/FLAG67e90cd97 [2021-03-10 17:34:48,743 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:34:48,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_tso.oepc.i [2021-03-10 17:34:48,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa8f64b5/ba2d25caa9c848a1968bdd24a5777406/FLAG67e90cd97 [2021-03-10 17:34:49,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aa8f64b5/ba2d25caa9c848a1968bdd24a5777406 [2021-03-10 17:34:49,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:34:49,063 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:34:49,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:34:49,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:34:49,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:34:49,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:34:49" (1/1) ... [2021-03-10 17:34:49,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aa4d8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49, skipping insertion in model container [2021-03-10 17:34:49,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:34:49" (1/1) ... [2021-03-10 17:34:49,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:34:49,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:34:49,178 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/safe028_tso.oepc.i[950,963] [2021-03-10 17:34:49,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:34:49,295 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:34:49,304 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/safe028_tso.oepc.i[950,963] [2021-03-10 17:34:49,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:34:49,384 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:34:49,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49 WrapperNode [2021-03-10 17:34:49,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:34:49,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:34:49,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:34:49,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:34:49,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49" (1/1) ... [2021-03-10 17:34:49,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49" (1/1) ... [2021-03-10 17:34:49,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:34:49,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:34:49,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:34:49,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:34:49,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49" (1/1) ... [2021-03-10 17:34:49,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49" (1/1) ... [2021-03-10 17:34:49,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49" (1/1) ... [2021-03-10 17:34:49,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49" (1/1) ... [2021-03-10 17:34:49,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49" (1/1) ... [2021-03-10 17:34:49,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49" (1/1) ... [2021-03-10 17:34:49,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49" (1/1) ... [2021-03-10 17:34:49,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:34:49,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:34:49,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:34:49,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:34:49,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49" (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 17:34:49,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:34:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:34:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:34:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:34:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:34:49,496 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:34:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:34:49,496 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:34:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:34:49,496 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:34:49,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:34:49,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:34:49,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:34:49,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:34:49,498 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 17:34:49,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:34:49,807 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:34:49,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:34:49 BoogieIcfgContainer [2021-03-10 17:34:49,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:34:49,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:34:49,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:34:49,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:34:49,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:34:49" (1/3) ... [2021-03-10 17:34:49,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e93d607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:34:49, skipping insertion in model container [2021-03-10 17:34:49,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:34:49" (2/3) ... [2021-03-10 17:34:49,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e93d607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:34:49, skipping insertion in model container [2021-03-10 17:34:49,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:34:49" (3/3) ... [2021-03-10 17:34:49,816 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_tso.oepc.i [2021-03-10 17:34:49,820 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:34:49,820 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:34:49,823 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:34:49,823 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:34:49,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,850 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,850 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,852 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,852 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,854 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,854 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,854 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,855 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,856 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,858 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,859 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,859 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,863 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,865 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,865 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:34:49,866 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:34:49,878 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:34:49,890 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:34:49,891 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:34:49,891 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:34:49,891 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:34:49,891 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:34:49,891 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:34:49,892 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:34:49,892 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:34:49,902 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 74 transitions, 163 flow [2021-03-10 17:34:50,209 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7566 states, 7564 states have (on average 3.5553939714436806) internal successors, (26893), 7565 states have internal predecessors, (26893), 0 states have call successors, (0), 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 17:34:50,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 7566 states, 7564 states have (on average 3.5553939714436806) internal successors, (26893), 7565 states have internal predecessors, (26893), 0 states have call successors, (0), 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 17:34:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:34:50,276 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:50,277 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:34:50,277 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:50,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1739866515, now seen corresponding path program 1 times [2021-03-10 17:34:50,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:50,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686794833] [2021-03-10 17:34:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:50,622 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 17:34:50,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686794833] [2021-03-10 17:34:50,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:50,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:34:50,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861358502] [2021-03-10 17:34:50,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:34:50,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:50,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:34:50,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:34:50,650 INFO L87 Difference]: Start difference. First operand has 7566 states, 7564 states have (on average 3.5553939714436806) internal successors, (26893), 7565 states have internal predecessors, (26893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:50,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:50,878 INFO L93 Difference]: Finished difference Result 10044 states and 34694 transitions. [2021-03-10 17:34:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:34:50,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-03-10 17:34:50,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:50,912 INFO L225 Difference]: With dead ends: 10044 [2021-03-10 17:34:50,913 INFO L226 Difference]: Without dead ends: 3534 [2021-03-10 17:34:50,914 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:34:50,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3534 states. [2021-03-10 17:34:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3534 to 3534. [2021-03-10 17:34:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3534 states, 3533 states have (on average 3.376450608547976) internal successors, (11929), 3533 states have internal predecessors, (11929), 0 states have call successors, (0), 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 17:34:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3534 states to 3534 states and 11929 transitions. [2021-03-10 17:34:51,092 INFO L78 Accepts]: Start accepts. Automaton has 3534 states and 11929 transitions. Word has length 40 [2021-03-10 17:34:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:51,093 INFO L480 AbstractCegarLoop]: Abstraction has 3534 states and 11929 transitions. [2021-03-10 17:34:51,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3534 states and 11929 transitions. [2021-03-10 17:34:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 17:34:51,098 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:51,098 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:34:51,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:34:51,098 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:51,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:51,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1757320718, now seen corresponding path program 1 times [2021-03-10 17:34:51,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:51,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821463385] [2021-03-10 17:34:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:51,241 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 17:34:51,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821463385] [2021-03-10 17:34:51,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:51,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:34:51,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515310362] [2021-03-10 17:34:51,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:34:51,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:51,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:34:51,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:34:51,243 INFO L87 Difference]: Start difference. First operand 3534 states and 11929 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:51,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:51,493 INFO L93 Difference]: Finished difference Result 4686 states and 15750 transitions. [2021-03-10 17:34:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 17:34:51,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-03-10 17:34:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:51,511 INFO L225 Difference]: With dead ends: 4686 [2021-03-10 17:34:51,511 INFO L226 Difference]: Without dead ends: 3750 [2021-03-10 17:34:51,512 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 226.7ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-03-10 17:34:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2021-03-10 17:34:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3750. [2021-03-10 17:34:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3750 states, 3749 states have (on average 3.3785009335822886) internal successors, (12666), 3749 states have internal predecessors, (12666), 0 states have call successors, (0), 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 17:34:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 12666 transitions. [2021-03-10 17:34:51,622 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 12666 transitions. Word has length 42 [2021-03-10 17:34:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:51,623 INFO L480 AbstractCegarLoop]: Abstraction has 3750 states and 12666 transitions. [2021-03-10 17:34:51,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 12666 transitions. [2021-03-10 17:34:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:34:51,632 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:51,632 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 17:34:51,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:34:51,632 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:51,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:51,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1783195255, now seen corresponding path program 1 times [2021-03-10 17:34:51,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:51,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815532424] [2021-03-10 17:34:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:51,705 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 17:34:51,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815532424] [2021-03-10 17:34:51,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:51,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:34:51,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360278949] [2021-03-10 17:34:51,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:34:51,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:51,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:34:51,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:34:51,706 INFO L87 Difference]: Start difference. First operand 3750 states and 12666 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 17:34:51,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:51,874 INFO L93 Difference]: Finished difference Result 5030 states and 16826 transitions. [2021-03-10 17:34:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:34:51,875 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 17:34:51,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:51,885 INFO L225 Difference]: With dead ends: 5030 [2021-03-10 17:34:51,886 INFO L226 Difference]: Without dead ends: 2624 [2021-03-10 17:34:51,886 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-03-10 17:34:51,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2021-03-10 17:34:51,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2624. [2021-03-10 17:34:51,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2624 states, 2623 states have (on average 3.2683949675943578) internal successors, (8573), 2623 states have internal predecessors, (8573), 0 states have call successors, (0), 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 17:34:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 8573 transitions. [2021-03-10 17:34:51,990 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 8573 transitions. Word has length 43 [2021-03-10 17:34:51,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:51,990 INFO L480 AbstractCegarLoop]: Abstraction has 2624 states and 8573 transitions. [2021-03-10 17:34:51,991 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 17:34:51,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 8573 transitions. [2021-03-10 17:34:51,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:34:51,994 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:51,995 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 17:34:51,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:34:51,995 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:51,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:51,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1324689137, now seen corresponding path program 1 times [2021-03-10 17:34:51,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:51,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577640190] [2021-03-10 17:34:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:52,051 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 17:34:52,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577640190] [2021-03-10 17:34:52,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:52,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:34:52,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407755716] [2021-03-10 17:34:52,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:34:52,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:52,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:34:52,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:34:52,052 INFO L87 Difference]: Start difference. First operand 2624 states and 8573 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:52,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:52,146 INFO L93 Difference]: Finished difference Result 3312 states and 10681 transitions. [2021-03-10 17:34:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:34:52,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-03-10 17:34:52,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:52,160 INFO L225 Difference]: With dead ends: 3312 [2021-03-10 17:34:52,160 INFO L226 Difference]: Without dead ends: 2416 [2021-03-10 17:34:52,161 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 66.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:34:52,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-03-10 17:34:52,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2416. [2021-03-10 17:34:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 2415 states have (on average 3.2219461697722567) internal successors, (7781), 2415 states have internal predecessors, (7781), 0 states have call successors, (0), 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 17:34:52,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 7781 transitions. [2021-03-10 17:34:52,214 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 7781 transitions. Word has length 44 [2021-03-10 17:34:52,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:52,214 INFO L480 AbstractCegarLoop]: Abstraction has 2416 states and 7781 transitions. [2021-03-10 17:34:52,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:52,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 7781 transitions. [2021-03-10 17:34:52,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:34:52,219 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:52,219 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:34:52,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:34:52,219 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:52,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:52,220 INFO L82 PathProgramCache]: Analyzing trace with hash -249264711, now seen corresponding path program 1 times [2021-03-10 17:34:52,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:52,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276321956] [2021-03-10 17:34:52,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:52,296 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 17:34:52,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276321956] [2021-03-10 17:34:52,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:52,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:34:52,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839113557] [2021-03-10 17:34:52,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:34:52,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:52,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:34:52,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:34:52,297 INFO L87 Difference]: Start difference. First operand 2416 states and 7781 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:52,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:52,420 INFO L93 Difference]: Finished difference Result 2512 states and 7851 transitions. [2021-03-10 17:34:52,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:34:52,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-03-10 17:34:52,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:52,437 INFO L225 Difference]: With dead ends: 2512 [2021-03-10 17:34:52,437 INFO L226 Difference]: Without dead ends: 1744 [2021-03-10 17:34:52,438 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 74.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:34:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2021-03-10 17:34:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1744. [2021-03-10 17:34:52,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1743 states have (on average 3.0676993689041883) internal successors, (5347), 1743 states have internal predecessors, (5347), 0 states have call successors, (0), 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 17:34:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 5347 transitions. [2021-03-10 17:34:52,464 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 5347 transitions. Word has length 45 [2021-03-10 17:34:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:52,466 INFO L480 AbstractCegarLoop]: Abstraction has 1744 states and 5347 transitions. [2021-03-10 17:34:52,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 5347 transitions. [2021-03-10 17:34:52,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:34:52,469 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:52,469 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 17:34:52,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:34:52,469 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:52,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:52,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1891345766, now seen corresponding path program 1 times [2021-03-10 17:34:52,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:52,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839719371] [2021-03-10 17:34:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:52,542 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 17:34:52,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839719371] [2021-03-10 17:34:52,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:52,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:34:52,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679452761] [2021-03-10 17:34:52,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:34:52,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:52,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:34:52,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:34:52,543 INFO L87 Difference]: Start difference. First operand 1744 states and 5347 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:52,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:52,649 INFO L93 Difference]: Finished difference Result 1393 states and 4114 transitions. [2021-03-10 17:34:52,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:34:52,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-03-10 17:34:52,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:52,654 INFO L225 Difference]: With dead ends: 1393 [2021-03-10 17:34:52,655 INFO L226 Difference]: Without dead ends: 961 [2021-03-10 17:34:52,655 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 83.3ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:34:52,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2021-03-10 17:34:52,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 961. [2021-03-10 17:34:52,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 960 states have (on average 2.8510416666666667) internal successors, (2737), 960 states have internal predecessors, (2737), 0 states have call successors, (0), 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 17:34:52,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 2737 transitions. [2021-03-10 17:34:52,668 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 2737 transitions. Word has length 47 [2021-03-10 17:34:52,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:52,668 INFO L480 AbstractCegarLoop]: Abstraction has 961 states and 2737 transitions. [2021-03-10 17:34:52,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:34:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 2737 transitions. [2021-03-10 17:34:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 17:34:52,670 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:52,670 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, 1, 1] [2021-03-10 17:34:52,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:34:52,670 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:52,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1041443300, now seen corresponding path program 1 times [2021-03-10 17:34:52,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:52,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281921343] [2021-03-10 17:34:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:52,748 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 17:34:52,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281921343] [2021-03-10 17:34:52,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:52,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:34:52,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806836364] [2021-03-10 17:34:52,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:34:52,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:52,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:34:52,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:34:52,749 INFO L87 Difference]: Start difference. First operand 961 states and 2737 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 17:34:52,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:52,802 INFO L93 Difference]: Finished difference Result 1364 states and 3914 transitions. [2021-03-10 17:34:52,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 17:34:52,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-03-10 17:34:52,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:52,805 INFO L225 Difference]: With dead ends: 1364 [2021-03-10 17:34:52,805 INFO L226 Difference]: Without dead ends: 661 [2021-03-10 17:34:52,805 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:34:52,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-03-10 17:34:52,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2021-03-10 17:34:52,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 2.7984848484848484) internal successors, (1847), 660 states have internal predecessors, (1847), 0 states have call successors, (0), 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 17:34:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1847 transitions. [2021-03-10 17:34:52,814 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1847 transitions. Word has length 51 [2021-03-10 17:34:52,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:52,814 INFO L480 AbstractCegarLoop]: Abstraction has 661 states and 1847 transitions. [2021-03-10 17:34:52,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 17:34:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1847 transitions. [2021-03-10 17:34:52,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 17:34:52,815 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:34:52,816 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, 1, 1] [2021-03-10 17:34:52,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:34:52,816 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:34:52,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:34:52,816 INFO L82 PathProgramCache]: Analyzing trace with hash 3590242, now seen corresponding path program 2 times [2021-03-10 17:34:52,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:34:52,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249991397] [2021-03-10 17:34:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:34:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:34:52,911 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 17:34:52,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249991397] [2021-03-10 17:34:52,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:34:52,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:34:52,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638294539] [2021-03-10 17:34:52,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:34:52,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:34:52,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:34:52,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:34:52,912 INFO L87 Difference]: Start difference. First operand 661 states and 1847 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 17:34:52,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:34:52,960 INFO L93 Difference]: Finished difference Result 607 states and 1685 transitions. [2021-03-10 17:34:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 17:34:52,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-03-10 17:34:52,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:34:52,961 INFO L225 Difference]: With dead ends: 607 [2021-03-10 17:34:52,962 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:34:52,962 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:34:52,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:34:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:34:52,964 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 17:34:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:34:52,964 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2021-03-10 17:34:52,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:34:52,965 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:34:52,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 17:34:52,965 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:34:52,965 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:34:52,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:34:52,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:34:52 BasicIcfg [2021-03-10 17:34:52,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:34:52,970 INFO L168 Benchmark]: Toolchain (without parser) took 3908.21 ms. Allocated memory was 255.9 MB in the beginning and 744.5 MB in the end (delta: 488.6 MB). Free memory was 234.6 MB in the beginning and 498.4 MB in the end (delta: -263.8 MB). Peak memory consumption was 223.3 MB. Max. memory is 16.0 GB. [2021-03-10 17:34:52,971 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:34:52,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.92 ms. Allocated memory was 255.9 MB in the beginning and 379.6 MB in the end (delta: 123.7 MB). Free memory was 234.2 MB in the beginning and 342.2 MB in the end (delta: -108.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-10 17:34:52,973 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.60 ms. Allocated memory is still 379.6 MB. Free memory was 342.2 MB in the beginning and 340.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:34:52,975 INFO L168 Benchmark]: Boogie Preprocessor took 13.99 ms. Allocated memory is still 379.6 MB. Free memory was 340.6 MB in the beginning and 339.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:34:52,977 INFO L168 Benchmark]: RCFGBuilder took 366.81 ms. Allocated memory is still 379.6 MB. Free memory was 339.0 MB in the beginning and 316.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-10 17:34:52,977 INFO L168 Benchmark]: TraceAbstraction took 3157.54 ms. Allocated memory was 379.6 MB in the beginning and 744.5 MB in the end (delta: 364.9 MB). Free memory was 316.4 MB in the beginning and 498.4 MB in the end (delta: -182.0 MB). Peak memory consumption was 185.0 MB. Max. memory is 16.0 GB. [2021-03-10 17:34:52,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 319.92 ms. Allocated memory was 255.9 MB in the beginning and 379.6 MB in the end (delta: 123.7 MB). Free memory was 234.2 MB in the beginning and 342.2 MB in the end (delta: -108.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.60 ms. Allocated memory is still 379.6 MB. Free memory was 342.2 MB in the beginning and 340.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.99 ms. Allocated memory is still 379.6 MB. Free memory was 340.6 MB in the beginning and 339.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 366.81 ms. Allocated memory is still 379.6 MB. Free memory was 339.0 MB in the beginning and 316.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3157.54 ms. Allocated memory was 379.6 MB in the beginning and 744.5 MB in the end (delta: 364.9 MB). Free memory was 316.4 MB in the beginning and 498.4 MB in the end (delta: -182.0 MB). Peak memory consumption was 185.0 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3076.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 92.9ms, AutomataDifference: 1204.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 317.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 733 SDtfs, 1174 SDslu, 2512 SDs, 0 SdLazy, 328 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 180.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 795.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7566occurred in iteration=0, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 486.5ms AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.7ms SsaConstructionTime, 179.7ms SatisfiabilityAnalysisTime, 621.8ms InterpolantComputationTime, 363 NumberOfCodeBlocks, 363 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 1067 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...