/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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 00:07:47,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 00:07:47,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 00:07:47,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-22 00:07:48,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-22 00:07:48,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-22 00:07:48,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-22 00:07:48,011 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-Separate.epf [2021-05-22 00:07:48,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 00:07:48,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 00:07:48,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 00:07:48,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 00:07:48,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 00:07:48,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 00:07:48,033 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 00:07:48,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 00:07:48,033 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 00:07:48,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 00:07:48,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 00:07:48,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 00:07:48,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 00:07:48,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 00:07:48,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 00:07:48,034 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 00:07:48,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 00:07:48,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 00:07:48,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 00:07:48,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 00:07:48,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 00:07:48,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 00:07:48,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 00:07:48,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 00:07:48,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 00:07:48,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 00:07:48,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 00:07:48,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 00:07:48,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 00:07:48,035 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 00:07:48,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 00:07:48,035 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 00:07:48,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 00:07:48,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 00:07:48,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 00:07:48,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 00:07:48,310 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-22 00:07:48,310 INFO L275 PluginConnector]: CDTParser initialized [2021-05-22 00:07:48,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2021-05-22 00:07:48,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eccb3878/3c59dfb6264949de97cf02f96b72670f/FLAG4b7c70e6e [2021-05-22 00:07:48,747 INFO L306 CDTParser]: Found 1 translation units. [2021-05-22 00:07:48,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i [2021-05-22 00:07:48,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eccb3878/3c59dfb6264949de97cf02f96b72670f/FLAG4b7c70e6e [2021-05-22 00:07:49,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eccb3878/3c59dfb6264949de97cf02f96b72670f [2021-05-22 00:07:49,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 00:07:49,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-22 00:07:49,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-22 00:07:49,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-22 00:07:49,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-22 00:07:49,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.05 12:07:49" (1/1) ... [2021-05-22 00:07:49,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d3a5fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49, skipping insertion in model container [2021-05-22 00:07:49,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.05 12:07:49" (1/1) ... [2021-05-22 00:07:49,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-22 00:07:49,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-22 00:07:49,317 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i[30035,30048] [2021-05-22 00:07:49,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-22 00:07:49,352 INFO L203 MainTranslator]: Completed pre-run [2021-05-22 00:07:49,385 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-1.i[30035,30048] [2021-05-22 00:07:49,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-22 00:07:49,423 INFO L208 MainTranslator]: Completed translation [2021-05-22 00:07:49,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49 WrapperNode [2021-05-22 00:07:49,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-22 00:07:49,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 00:07:49,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 00:07:49,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 00:07:49,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49" (1/1) ... [2021-05-22 00:07:49,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49" (1/1) ... [2021-05-22 00:07:49,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 00:07:49,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 00:07:49,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 00:07:49,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 00:07:49,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49" (1/1) ... [2021-05-22 00:07:49,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49" (1/1) ... [2021-05-22 00:07:49,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49" (1/1) ... [2021-05-22 00:07:49,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49" (1/1) ... [2021-05-22 00:07:49,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49" (1/1) ... [2021-05-22 00:07:49,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49" (1/1) ... [2021-05-22 00:07:49,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49" (1/1) ... [2021-05-22 00:07:49,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 00:07:49,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 00:07:49,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 00:07:49,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 00:07:49,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49" (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 [2021-05-22 00:07:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-05-22 00:07:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-05-22 00:07:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-05-22 00:07:49,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-05-22 00:07:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-22 00:07:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-22 00:07:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-22 00:07:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-22 00:07:49,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 00:07:49,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 00:07:49,545 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-22 00:07:49,779 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 00:07:49,779 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-05-22 00:07:49,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 12:07:49 BoogieIcfgContainer [2021-05-22 00:07:49,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 00:07:49,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 00:07:49,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 00:07:49,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 00:07:49,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.05 12:07:49" (1/3) ... [2021-05-22 00:07:49,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426f373c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 12:07:49, skipping insertion in model container [2021-05-22 00:07:49,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:07:49" (2/3) ... [2021-05-22 00:07:49,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426f373c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 12:07:49, skipping insertion in model container [2021-05-22 00:07:49,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 12:07:49" (3/3) ... [2021-05-22 00:07:49,785 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-1.i [2021-05-22 00:07:49,789 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 00:07:49,789 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 00:07:49,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 00:07:49,790 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 00:07:49,807 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,807 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,807 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,808 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,808 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,811 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,811 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,812 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,813 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,813 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,821 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,821 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,822 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,822 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:49,830 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-22 00:07:49,843 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-22 00:07:49,855 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:07:49,855 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:07:49,855 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:07:49,855 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:07:49,856 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:07:49,856 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:07:49,856 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:07:49,856 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:07:49,862 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 69 transitions, 148 flow [2021-05-22 00:07:49,903 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1329 states, 1323 states have (on average 2.7135298563869994) internal successors, (3590), 1328 states have internal predecessors, (3590), 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) [2021-05-22 00:07:49,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 1329 states, 1323 states have (on average 2.7135298563869994) internal successors, (3590), 1328 states have internal predecessors, (3590), 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) [2021-05-22 00:07:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 00:07:49,918 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:49,918 INFO L521 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] [2021-05-22 00:07:49,919 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:49,925 INFO L82 PathProgramCache]: Analyzing trace with hash 2101000019, now seen corresponding path program 1 times [2021-05-22 00:07:49,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:49,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968480108] [2021-05-22 00:07:49,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:50,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:50,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:50,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968480108] [2021-05-22 00:07:50,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968480108] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:50,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:50,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 00:07:50,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008802516] [2021-05-22 00:07:50,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-22 00:07:50,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:50,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-22 00:07:50,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-22 00:07:50,289 INFO L87 Difference]: Start difference. First operand has 1329 states, 1323 states have (on average 2.7135298563869994) internal successors, (3590), 1328 states have internal predecessors, (3590), 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 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-05-22 00:07:50,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:50,485 INFO L93 Difference]: Finished difference Result 1205 states and 2955 transitions. [2021-05-22 00:07:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 00:07:50,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 34 [2021-05-22 00:07:50,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:50,500 INFO L225 Difference]: With dead ends: 1205 [2021-05-22 00:07:50,500 INFO L226 Difference]: Without dead ends: 462 [2021-05-22 00:07:50,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-05-22 00:07:50,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-05-22 00:07:50,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2021-05-22 00:07:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 460 states have (on average 2.2543478260869567) internal successors, (1037), 461 states have internal predecessors, (1037), 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) [2021-05-22 00:07:50,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1037 transitions. [2021-05-22 00:07:50,559 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1037 transitions. Word has length 34 [2021-05-22 00:07:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:50,559 INFO L482 AbstractCegarLoop]: Abstraction has 462 states and 1037 transitions. [2021-05-22 00:07:50,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-05-22 00:07:50,560 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1037 transitions. [2021-05-22 00:07:50,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-22 00:07:50,561 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:50,561 INFO L521 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] [2021-05-22 00:07:50,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 00:07:50,562 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:50,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:50,562 INFO L82 PathProgramCache]: Analyzing trace with hash 317679082, now seen corresponding path program 1 times [2021-05-22 00:07:50,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:50,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448784380] [2021-05-22 00:07:50,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:50,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:50,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448784380] [2021-05-22 00:07:50,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448784380] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:50,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:50,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-22 00:07:50,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562511476] [2021-05-22 00:07:50,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:07:50,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:50,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:07:50,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-05-22 00:07:50,756 INFO L87 Difference]: Start difference. First operand 462 states and 1037 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 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) [2021-05-22 00:07:50,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:50,915 INFO L93 Difference]: Finished difference Result 386 states and 851 transitions. [2021-05-22 00:07:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-22 00:07:50,916 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 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 [2021-05-22 00:07:50,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:50,917 INFO L225 Difference]: With dead ends: 386 [2021-05-22 00:07:50,917 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 00:07:50,917 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 160.3ms TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-05-22 00:07:50,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 00:07:50,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 00:07:50,918 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) [2021-05-22 00:07:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 00:07:50,918 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2021-05-22 00:07:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:50,918 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 00:07:50,918 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 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) [2021-05-22 00:07:50,919 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 00:07:50,919 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 00:07:50,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-22 00:07:50,919 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 00:07:50,921 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-22 00:07:50,930 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:07:50,930 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:07:50,930 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:07:50,930 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:07:50,930 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:07:50,930 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:07:50,930 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:07:50,930 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:07:50,934 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 69 transitions, 148 flow [2021-05-22 00:07:50,958 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1329 states, 1323 states have (on average 2.7135298563869994) internal successors, (3590), 1328 states have internal predecessors, (3590), 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) [2021-05-22 00:07:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 1329 states, 1323 states have (on average 2.7135298563869994) internal successors, (3590), 1328 states have internal predecessors, (3590), 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) [2021-05-22 00:07:50,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-22 00:07:50,967 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:50,968 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:50,969 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-22 00:07:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:50,969 INFO L82 PathProgramCache]: Analyzing trace with hash -821612, now seen corresponding path program 1 times [2021-05-22 00:07:50,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:50,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423011290] [2021-05-22 00:07:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:07:51,004 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:07:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:07:51,042 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:07:51,063 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-22 00:07:51,063 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-22 00:07:51,063 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-22 00:07:51,063 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-05-22 00:07:51,064 WARN L242 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-05-22 00:07:51,064 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-05-22 00:07:51,079 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,084 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,090 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,090 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,095 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,095 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,096 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,096 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,096 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,096 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,096 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,096 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,098 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,098 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,098 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,098 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,098 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,101 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:51,102 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-22 00:07:51,102 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-22 00:07:51,103 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:07:51,103 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:07:51,103 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:07:51,103 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:07:51,103 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:07:51,103 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:07:51,103 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:07:51,104 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:07:51,105 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 86 transitions, 196 flow [2021-05-22 00:07:51,312 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8109 states, 8101 states have (on average 3.525490680162943) internal successors, (28560), 8108 states have internal predecessors, (28560), 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) [2021-05-22 00:07:51,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 8109 states, 8101 states have (on average 3.525490680162943) internal successors, (28560), 8108 states have internal predecessors, (28560), 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) [2021-05-22 00:07:51,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 00:07:51,331 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:51,331 INFO L521 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] [2021-05-22 00:07:51,331 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:51,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:51,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1924836355, now seen corresponding path program 1 times [2021-05-22 00:07:51,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:51,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227784117] [2021-05-22 00:07:51,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:51,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:51,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227784117] [2021-05-22 00:07:51,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227784117] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:51,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:51,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 00:07:51,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095803829] [2021-05-22 00:07:51,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-22 00:07:51,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:51,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-22 00:07:51,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-22 00:07:51,456 INFO L87 Difference]: Start difference. First operand has 8109 states, 8101 states have (on average 3.525490680162943) internal successors, (28560), 8108 states have internal predecessors, (28560), 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 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-05-22 00:07:51,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:51,670 INFO L93 Difference]: Finished difference Result 8597 states and 28009 transitions. [2021-05-22 00:07:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 00:07:51,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 34 [2021-05-22 00:07:51,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:51,693 INFO L225 Difference]: With dead ends: 8597 [2021-05-22 00:07:51,694 INFO L226 Difference]: Without dead ends: 3708 [2021-05-22 00:07:51,694 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-05-22 00:07:51,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2021-05-22 00:07:51,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 3708. [2021-05-22 00:07:51,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3708 states, 3705 states have (on average 3.1379217273954114) internal successors, (11626), 3707 states have internal predecessors, (11626), 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) [2021-05-22 00:07:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 11626 transitions. [2021-05-22 00:07:51,841 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 11626 transitions. Word has length 34 [2021-05-22 00:07:51,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:51,841 INFO L482 AbstractCegarLoop]: Abstraction has 3708 states and 11626 transitions. [2021-05-22 00:07:51,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-05-22 00:07:51,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 11626 transitions. [2021-05-22 00:07:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-22 00:07:51,842 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:51,842 INFO L521 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] [2021-05-22 00:07:51,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-22 00:07:51,842 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:51,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:51,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1857372259, now seen corresponding path program 1 times [2021-05-22 00:07:51,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:51,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689870008] [2021-05-22 00:07:51,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:51,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:51,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689870008] [2021-05-22 00:07:51,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689870008] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:51,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:07:51,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-22 00:07:51,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427132982] [2021-05-22 00:07:51,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:07:51,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:51,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:07:51,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-05-22 00:07:51,987 INFO L87 Difference]: Start difference. First operand 3708 states and 11626 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 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) [2021-05-22 00:07:52,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:52,208 INFO L93 Difference]: Finished difference Result 5118 states and 15453 transitions. [2021-05-22 00:07:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-22 00:07:52,208 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 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 [2021-05-22 00:07:52,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:52,223 INFO L225 Difference]: With dead ends: 5118 [2021-05-22 00:07:52,223 INFO L226 Difference]: Without dead ends: 3850 [2021-05-22 00:07:52,224 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 184.3ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-05-22 00:07:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2021-05-22 00:07:52,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 2748. [2021-05-22 00:07:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2746 states have (on average 3.1019664967225054) internal successors, (8518), 2747 states have internal predecessors, (8518), 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) [2021-05-22 00:07:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 8518 transitions. [2021-05-22 00:07:52,305 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 8518 transitions. Word has length 46 [2021-05-22 00:07:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:52,305 INFO L482 AbstractCegarLoop]: Abstraction has 2748 states and 8518 transitions. [2021-05-22 00:07:52,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 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) [2021-05-22 00:07:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 8518 transitions. [2021-05-22 00:07:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-22 00:07:52,306 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:52,307 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:52,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-22 00:07:52,307 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:52,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:52,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1479235996, now seen corresponding path program 1 times [2021-05-22 00:07:52,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:52,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885354839] [2021-05-22 00:07:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:52,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:52,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885354839] [2021-05-22 00:07:52,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885354839] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:52,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278082676] [2021-05-22 00:07:52,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:52,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-22 00:07:52,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:07:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:52,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278082676] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:52,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:07:52,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-05-22 00:07:52,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628475115] [2021-05-22 00:07:52,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-22 00:07:52,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:52,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-22 00:07:52,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-05-22 00:07:52,778 INFO L87 Difference]: Start difference. First operand 2748 states and 8518 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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) [2021-05-22 00:07:53,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:53,091 INFO L93 Difference]: Finished difference Result 3660 states and 10826 transitions. [2021-05-22 00:07:53,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-22 00:07:53,091 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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 56 [2021-05-22 00:07:53,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:53,100 INFO L225 Difference]: With dead ends: 3660 [2021-05-22 00:07:53,100 INFO L226 Difference]: Without dead ends: 2406 [2021-05-22 00:07:53,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 221.5ms TimeCoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2021-05-22 00:07:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2021-05-22 00:07:53,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 1874. [2021-05-22 00:07:53,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1874 states, 1872 states have (on average 2.940705128205128) internal successors, (5505), 1873 states have internal predecessors, (5505), 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) [2021-05-22 00:07:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 5505 transitions. [2021-05-22 00:07:53,148 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 5505 transitions. Word has length 56 [2021-05-22 00:07:53,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:53,150 INFO L482 AbstractCegarLoop]: Abstraction has 1874 states and 5505 transitions. [2021-05-22 00:07:53,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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) [2021-05-22 00:07:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 5505 transitions. [2021-05-22 00:07:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:07:53,152 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:53,152 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:53,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-22 00:07:53,370 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:53,371 INFO L82 PathProgramCache]: Analyzing trace with hash 298451390, now seen corresponding path program 1 times [2021-05-22 00:07:53,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:53,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241048278] [2021-05-22 00:07:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:53,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:53,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241048278] [2021-05-22 00:07:53,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241048278] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:53,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656522807] [2021-05-22 00:07:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:53,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:07:53,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:07:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:53,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656522807] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:53,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:07:53,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2021-05-22 00:07:53,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809851141] [2021-05-22 00:07:53,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-22 00:07:53,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:53,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-22 00:07:53,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2021-05-22 00:07:53,972 INFO L87 Difference]: Start difference. First operand 1874 states and 5505 transitions. Second operand has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 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) [2021-05-22 00:07:54,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:54,791 INFO L93 Difference]: Finished difference Result 2478 states and 7161 transitions. [2021-05-22 00:07:54,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-22 00:07:54,792 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 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 60 [2021-05-22 00:07:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:54,798 INFO L225 Difference]: With dead ends: 2478 [2021-05-22 00:07:54,798 INFO L226 Difference]: Without dead ends: 1620 [2021-05-22 00:07:54,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 828.4ms TimeCoverageRelationStatistics Valid=430, Invalid=1826, Unknown=0, NotChecked=0, Total=2256 [2021-05-22 00:07:54,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2021-05-22 00:07:54,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1396. [2021-05-22 00:07:54,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1394 states have (on average 2.8622668579626973) internal successors, (3990), 1395 states have internal predecessors, (3990), 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) [2021-05-22 00:07:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3990 transitions. [2021-05-22 00:07:54,822 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3990 transitions. Word has length 60 [2021-05-22 00:07:54,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:54,822 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3990 transitions. [2021-05-22 00:07:54,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 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) [2021-05-22 00:07:54,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3990 transitions. [2021-05-22 00:07:54,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:07:54,824 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:54,824 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:55,042 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:55,044 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:07:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:55,045 INFO L82 PathProgramCache]: Analyzing trace with hash -437778756, now seen corresponding path program 2 times [2021-05-22 00:07:55,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:55,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332039730] [2021-05-22 00:07:55,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:07:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:07:55,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:07:55,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332039730] [2021-05-22 00:07:55,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332039730] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:07:55,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185367767] [2021-05-22 00:07:55,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:07:55,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:07:55,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:07:55,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:07:55,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:07:55,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-22 00:07:55,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185367767] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:07:55,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:07:55,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2021-05-22 00:07:55,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138823612] [2021-05-22 00:07:55,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:07:55,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:07:55,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:07:55,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2021-05-22 00:07:55,531 INFO L87 Difference]: Start difference. First operand 1396 states and 3990 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2021-05-22 00:07:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:07:55,735 INFO L93 Difference]: Finished difference Result 1244 states and 3542 transitions. [2021-05-22 00:07:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-22 00:07:55,735 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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 60 [2021-05-22 00:07:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:07:55,735 INFO L225 Difference]: With dead ends: 1244 [2021-05-22 00:07:55,735 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 00:07:55,736 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 347.5ms TimeCoverageRelationStatistics Valid=181, Invalid=1009, Unknown=0, NotChecked=0, Total=1190 [2021-05-22 00:07:55,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 00:07:55,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 00:07:55,736 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) [2021-05-22 00:07:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 00:07:55,736 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-05-22 00:07:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:07:55,737 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 00:07:55,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2021-05-22 00:07:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 00:07:55,737 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 00:07:55,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-22 00:07:55,953 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 00:07:55,953 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-22 00:07:55,954 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:07:55,954 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:07:55,954 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:07:55,954 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:07:55,954 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:07:55,954 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:07:55,954 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:07:55,954 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:07:55,955 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 86 transitions, 196 flow [2021-05-22 00:07:56,148 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8109 states, 8101 states have (on average 3.525490680162943) internal successors, (28560), 8108 states have internal predecessors, (28560), 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) [2021-05-22 00:07:56,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 8109 states, 8101 states have (on average 3.525490680162943) internal successors, (28560), 8108 states have internal predecessors, (28560), 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) [2021-05-22 00:07:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-22 00:07:56,168 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:07:56,168 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:07:56,168 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-22 00:07:56,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:07:56,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1728251235, now seen corresponding path program 1 times [2021-05-22 00:07:56,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:07:56,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883249368] [2021-05-22 00:07:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:07:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:07:56,183 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:07:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:07:56,197 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:07:56,211 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-22 00:07:56,212 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-22 00:07:56,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-22 00:07:56,212 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-05-22 00:07:56,212 WARN L242 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-05-22 00:07:56,212 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-05-22 00:07:56,219 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,220 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,221 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,221 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,221 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,221 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,221 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,221 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,221 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,221 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,222 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,223 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,224 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,224 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,225 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,226 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,227 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,227 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,227 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,228 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,228 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,228 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,228 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,228 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,228 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,229 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,229 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,229 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,229 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,229 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,229 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,229 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,230 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,230 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,230 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,230 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,230 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,230 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,231 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,231 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,231 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,231 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:07:56,232 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-22 00:07:56,232 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-22 00:07:56,233 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:07:56,233 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:07:56,233 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:07:56,233 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:07:56,233 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:07:56,233 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:07:56,233 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:07:56,233 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:07:56,236 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 112 places, 103 transitions, 248 flow [2021-05-22 00:08:01,020 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 48789 states, 48779 states have (on average 4.35187273211833) internal successors, (212280), 48788 states have internal predecessors, (212280), 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) [2021-05-22 00:08:01,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 48789 states, 48779 states have (on average 4.35187273211833) internal successors, (212280), 48788 states have internal predecessors, (212280), 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) [2021-05-22 00:08:01,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 00:08:01,089 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:01,089 INFO L521 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] [2021-05-22 00:08:01,089 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:01,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:01,089 INFO L82 PathProgramCache]: Analyzing trace with hash 2020120723, now seen corresponding path program 1 times [2021-05-22 00:08:01,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:01,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950147542] [2021-05-22 00:08:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:01,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:01,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:01,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950147542] [2021-05-22 00:08:01,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950147542] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:01,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:01,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 00:08:01,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798903089] [2021-05-22 00:08:01,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-22 00:08:01,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:01,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-22 00:08:01,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-22 00:08:01,208 INFO L87 Difference]: Start difference. First operand has 48789 states, 48779 states have (on average 4.35187273211833) internal successors, (212280), 48788 states have internal predecessors, (212280), 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 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-05-22 00:08:01,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:01,612 INFO L93 Difference]: Finished difference Result 57149 states and 233481 transitions. [2021-05-22 00:08:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 00:08:01,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 34 [2021-05-22 00:08:01,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:01,911 INFO L225 Difference]: With dead ends: 57149 [2021-05-22 00:08:01,911 INFO L226 Difference]: Without dead ends: 26184 [2021-05-22 00:08:01,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 76.0ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-05-22 00:08:02,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26184 states. [2021-05-22 00:08:02,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26184 to 26184. [2021-05-22 00:08:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26184 states, 26180 states have (on average 4.003437738731856) internal successors, (104810), 26183 states have internal predecessors, (104810), 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) [2021-05-22 00:08:02,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26184 states to 26184 states and 104810 transitions. [2021-05-22 00:08:02,867 INFO L78 Accepts]: Start accepts. Automaton has 26184 states and 104810 transitions. Word has length 34 [2021-05-22 00:08:02,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:02,868 INFO L482 AbstractCegarLoop]: Abstraction has 26184 states and 104810 transitions. [2021-05-22 00:08:02,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-05-22 00:08:02,868 INFO L276 IsEmpty]: Start isEmpty. Operand 26184 states and 104810 transitions. [2021-05-22 00:08:02,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-22 00:08:02,869 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:02,869 INFO L521 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] [2021-05-22 00:08:02,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-22 00:08:02,869 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:02,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:02,869 INFO L82 PathProgramCache]: Analyzing trace with hash 317983230, now seen corresponding path program 1 times [2021-05-22 00:08:02,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:02,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348998298] [2021-05-22 00:08:02,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:03,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:03,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348998298] [2021-05-22 00:08:03,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348998298] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:03,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:03,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-22 00:08:03,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937129474] [2021-05-22 00:08:03,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:08:03,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:03,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:08:03,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-05-22 00:08:03,107 INFO L87 Difference]: Start difference. First operand 26184 states and 104810 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 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) [2021-05-22 00:08:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:03,601 INFO L93 Difference]: Finished difference Result 44160 states and 169716 transitions. [2021-05-22 00:08:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-22 00:08:03,601 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 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 [2021-05-22 00:08:03,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:03,875 INFO L225 Difference]: With dead ends: 44160 [2021-05-22 00:08:03,875 INFO L226 Difference]: Without dead ends: 36340 [2021-05-22 00:08:03,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 150.6ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-05-22 00:08:04,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36340 states. [2021-05-22 00:08:04,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36340 to 24276. [2021-05-22 00:08:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24276 states, 24273 states have (on average 3.949244015984839) internal successors, (95860), 24275 states have internal predecessors, (95860), 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) [2021-05-22 00:08:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24276 states to 24276 states and 95860 transitions. [2021-05-22 00:08:04,729 INFO L78 Accepts]: Start accepts. Automaton has 24276 states and 95860 transitions. Word has length 46 [2021-05-22 00:08:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:04,729 INFO L482 AbstractCegarLoop]: Abstraction has 24276 states and 95860 transitions. [2021-05-22 00:08:04,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 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) [2021-05-22 00:08:04,729 INFO L276 IsEmpty]: Start isEmpty. Operand 24276 states and 95860 transitions. [2021-05-22 00:08:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-22 00:08:04,731 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:04,731 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:04,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-22 00:08:04,731 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:04,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:04,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1522783278, now seen corresponding path program 1 times [2021-05-22 00:08:04,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:04,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622889885] [2021-05-22 00:08:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:04,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:04,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622889885] [2021-05-22 00:08:04,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622889885] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:04,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979797950] [2021-05-22 00:08:04,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:04,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-22 00:08:04,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:05,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979797950] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:05,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:05,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-05-22 00:08:05,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81990905] [2021-05-22 00:08:05,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-22 00:08:05,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:05,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-22 00:08:05,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-05-22 00:08:05,126 INFO L87 Difference]: Start difference. First operand 24276 states and 95860 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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) [2021-05-22 00:08:05,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:05,690 INFO L93 Difference]: Finished difference Result 40036 states and 151990 transitions. [2021-05-22 00:08:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-22 00:08:05,691 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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 56 [2021-05-22 00:08:05,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:05,780 INFO L225 Difference]: With dead ends: 40036 [2021-05-22 00:08:05,781 INFO L226 Difference]: Without dead ends: 32036 [2021-05-22 00:08:05,781 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 229.3ms TimeCoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2021-05-22 00:08:05,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32036 states. [2021-05-22 00:08:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32036 to 21952. [2021-05-22 00:08:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21952 states, 21949 states have (on average 3.867237687366167) internal successors, (84882), 21951 states have internal predecessors, (84882), 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) [2021-05-22 00:08:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21952 states to 21952 states and 84882 transitions. [2021-05-22 00:08:06,409 INFO L78 Accepts]: Start accepts. Automaton has 21952 states and 84882 transitions. Word has length 56 [2021-05-22 00:08:06,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:06,409 INFO L482 AbstractCegarLoop]: Abstraction has 21952 states and 84882 transitions. [2021-05-22 00:08:06,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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) [2021-05-22 00:08:06,410 INFO L276 IsEmpty]: Start isEmpty. Operand 21952 states and 84882 transitions. [2021-05-22 00:08:06,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:08:06,412 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:06,412 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:06,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-22 00:08:06,613 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:06,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:06,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1933156652, now seen corresponding path program 1 times [2021-05-22 00:08:06,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:06,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263062332] [2021-05-22 00:08:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:06,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:06,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263062332] [2021-05-22 00:08:06,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263062332] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:06,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717147496] [2021-05-22 00:08:06,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:06,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:08:06,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:07,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717147496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:07,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:07,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2021-05-22 00:08:07,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394189688] [2021-05-22 00:08:07,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-22 00:08:07,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:07,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-22 00:08:07,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2021-05-22 00:08:07,329 INFO L87 Difference]: Start difference. First operand 21952 states and 84882 transitions. Second operand has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 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) [2021-05-22 00:08:08,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:08,619 INFO L93 Difference]: Finished difference Result 54310 states and 202431 transitions. [2021-05-22 00:08:08,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-22 00:08:08,620 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 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 60 [2021-05-22 00:08:08,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:08,752 INFO L225 Difference]: With dead ends: 54310 [2021-05-22 00:08:08,752 INFO L226 Difference]: Without dead ends: 50926 [2021-05-22 00:08:08,753 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1131.1ms TimeCoverageRelationStatistics Valid=555, Invalid=2525, Unknown=0, NotChecked=0, Total=3080 [2021-05-22 00:08:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50926 states. [2021-05-22 00:08:09,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50926 to 20976. [2021-05-22 00:08:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20976 states, 20973 states have (on average 3.8705955275830832) internal successors, (81178), 20975 states have internal predecessors, (81178), 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) [2021-05-22 00:08:09,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20976 states to 20976 states and 81178 transitions. [2021-05-22 00:08:09,717 INFO L78 Accepts]: Start accepts. Automaton has 20976 states and 81178 transitions. Word has length 60 [2021-05-22 00:08:09,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:09,717 INFO L482 AbstractCegarLoop]: Abstraction has 20976 states and 81178 transitions. [2021-05-22 00:08:09,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 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) [2021-05-22 00:08:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 20976 states and 81178 transitions. [2021-05-22 00:08:09,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:08:09,720 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:09,720 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:09,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-22 00:08:09,933 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:09,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:09,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1681668076, now seen corresponding path program 2 times [2021-05-22 00:08:09,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:09,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255055838] [2021-05-22 00:08:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:10,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:10,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255055838] [2021-05-22 00:08:10,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255055838] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:10,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430967421] [2021-05-22 00:08:10,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:10,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:08:10,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:10,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:08:10,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-22 00:08:10,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430967421] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:10,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:08:10,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2021-05-22 00:08:10,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110674246] [2021-05-22 00:08:10,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:08:10,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:10,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:08:10,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2021-05-22 00:08:10,380 INFO L87 Difference]: Start difference. First operand 20976 states and 81178 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2021-05-22 00:08:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:11,028 INFO L93 Difference]: Finished difference Result 41438 states and 154425 transitions. [2021-05-22 00:08:11,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:08:11,028 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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 60 [2021-05-22 00:08:11,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:11,112 INFO L225 Difference]: With dead ends: 41438 [2021-05-22 00:08:11,113 INFO L226 Difference]: Without dead ends: 38102 [2021-05-22 00:08:11,113 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 459.3ms TimeCoverageRelationStatistics Valid=260, Invalid=1380, Unknown=0, NotChecked=0, Total=1640 [2021-05-22 00:08:11,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38102 states. [2021-05-22 00:08:11,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38102 to 17224. [2021-05-22 00:08:11,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17224 states, 17222 states have (on average 3.9211473696434793) internal successors, (67530), 17223 states have internal predecessors, (67530), 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) [2021-05-22 00:08:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17224 states to 17224 states and 67530 transitions. [2021-05-22 00:08:11,692 INFO L78 Accepts]: Start accepts. Automaton has 17224 states and 67530 transitions. Word has length 60 [2021-05-22 00:08:11,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:11,693 INFO L482 AbstractCegarLoop]: Abstraction has 17224 states and 67530 transitions. [2021-05-22 00:08:11,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2021-05-22 00:08:11,693 INFO L276 IsEmpty]: Start isEmpty. Operand 17224 states and 67530 transitions. [2021-05-22 00:08:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-22 00:08:11,698 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:11,698 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:11,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:11,911 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:11,912 INFO L82 PathProgramCache]: Analyzing trace with hash -411729027, now seen corresponding path program 1 times [2021-05-22 00:08:11,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:11,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523089950] [2021-05-22 00:08:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:11,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:11,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523089950] [2021-05-22 00:08:11,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523089950] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:11,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940727868] [2021-05-22 00:08:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:12,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 00:08:12,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:12,238 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:12,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940727868] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:12,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:12,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-05-22 00:08:12,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602595672] [2021-05-22 00:08:12,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-22 00:08:12,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:12,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-22 00:08:12,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-05-22 00:08:12,239 INFO L87 Difference]: Start difference. First operand 17224 states and 67530 transitions. Second operand has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 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) [2021-05-22 00:08:12,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:12,925 INFO L93 Difference]: Finished difference Result 28776 states and 108418 transitions. [2021-05-22 00:08:12,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-22 00:08:12,926 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 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 66 [2021-05-22 00:08:12,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:12,980 INFO L225 Difference]: With dead ends: 28776 [2021-05-22 00:08:12,980 INFO L226 Difference]: Without dead ends: 21366 [2021-05-22 00:08:12,980 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 294.7ms TimeCoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2021-05-22 00:08:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21366 states. [2021-05-22 00:08:13,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21366 to 15438. [2021-05-22 00:08:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15438 states, 15436 states have (on average 3.759328841668826) internal successors, (58029), 15437 states have internal predecessors, (58029), 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) [2021-05-22 00:08:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15438 states to 15438 states and 58029 transitions. [2021-05-22 00:08:13,353 INFO L78 Accepts]: Start accepts. Automaton has 15438 states and 58029 transitions. Word has length 66 [2021-05-22 00:08:13,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:13,354 INFO L482 AbstractCegarLoop]: Abstraction has 15438 states and 58029 transitions. [2021-05-22 00:08:13,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 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) [2021-05-22 00:08:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 15438 states and 58029 transitions. [2021-05-22 00:08:13,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:08:13,364 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:13,364 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:13,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-22 00:08:13,576 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:13,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1425691909, now seen corresponding path program 1 times [2021-05-22 00:08:13,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:13,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63072139] [2021-05-22 00:08:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:13,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:13,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63072139] [2021-05-22 00:08:13,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63072139] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:13,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016240505] [2021-05-22 00:08:13,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:13,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-22 00:08:13,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:14,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016240505] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:14,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:14,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-05-22 00:08:14,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814583116] [2021-05-22 00:08:14,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-22 00:08:14,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:14,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-22 00:08:14,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2021-05-22 00:08:14,047 INFO L87 Difference]: Start difference. First operand 15438 states and 58029 transitions. Second operand has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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) [2021-05-22 00:08:16,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:16,539 INFO L93 Difference]: Finished difference Result 40222 states and 143665 transitions. [2021-05-22 00:08:16,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-22 00:08:16,539 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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 70 [2021-05-22 00:08:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:16,610 INFO L225 Difference]: With dead ends: 40222 [2021-05-22 00:08:16,610 INFO L226 Difference]: Without dead ends: 33898 [2021-05-22 00:08:16,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3341 ImplicationChecksByTransitivity, 1516.4ms TimeCoverageRelationStatistics Valid=1471, Invalid=9241, Unknown=0, NotChecked=0, Total=10712 [2021-05-22 00:08:16,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33898 states. [2021-05-22 00:08:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33898 to 15370. [2021-05-22 00:08:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15370 states, 15368 states have (on average 3.741085372201978) internal successors, (57493), 15369 states have internal predecessors, (57493), 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) [2021-05-22 00:08:17,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15370 states to 15370 states and 57493 transitions. [2021-05-22 00:08:17,019 INFO L78 Accepts]: Start accepts. Automaton has 15370 states and 57493 transitions. Word has length 70 [2021-05-22 00:08:17,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:17,019 INFO L482 AbstractCegarLoop]: Abstraction has 15370 states and 57493 transitions. [2021-05-22 00:08:17,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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) [2021-05-22 00:08:17,019 INFO L276 IsEmpty]: Start isEmpty. Operand 15370 states and 57493 transitions. [2021-05-22 00:08:17,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:08:17,029 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:17,029 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:17,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:17,241 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:17,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:17,241 INFO L82 PathProgramCache]: Analyzing trace with hash 152480955, now seen corresponding path program 2 times [2021-05-22 00:08:17,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:17,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046538496] [2021-05-22 00:08:17,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:17,332 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:17,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:17,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046538496] [2021-05-22 00:08:17,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046538496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:17,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759509696] [2021-05-22 00:08:17,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:17,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:08:17,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:17,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:08:17,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:08:17,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759509696] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:17,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:08:17,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2021-05-22 00:08:17,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032654092] [2021-05-22 00:08:17,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:08:17,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:17,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:08:17,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-05-22 00:08:17,793 INFO L87 Difference]: Start difference. First operand 15370 states and 57493 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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) [2021-05-22 00:08:18,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:18,262 INFO L93 Difference]: Finished difference Result 26858 states and 96689 transitions. [2021-05-22 00:08:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:08:18,265 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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 70 [2021-05-22 00:08:18,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:18,311 INFO L225 Difference]: With dead ends: 26858 [2021-05-22 00:08:18,311 INFO L226 Difference]: Without dead ends: 23172 [2021-05-22 00:08:18,311 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 406.7ms TimeCoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2021-05-22 00:08:18,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23172 states. [2021-05-22 00:08:18,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23172 to 11760. [2021-05-22 00:08:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11760 states, 11758 states have (on average 3.7472359244769518) internal successors, (44060), 11759 states have internal predecessors, (44060), 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) [2021-05-22 00:08:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11760 states to 11760 states and 44060 transitions. [2021-05-22 00:08:18,695 INFO L78 Accepts]: Start accepts. Automaton has 11760 states and 44060 transitions. Word has length 70 [2021-05-22 00:08:18,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:18,695 INFO L482 AbstractCegarLoop]: Abstraction has 11760 states and 44060 transitions. [2021-05-22 00:08:18,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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) [2021-05-22 00:08:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 11760 states and 44060 transitions. [2021-05-22 00:08:18,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:08:18,704 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:18,704 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:18,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:18,919 INFO L430 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:18,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:18,919 INFO L82 PathProgramCache]: Analyzing trace with hash -82532737, now seen corresponding path program 1 times [2021-05-22 00:08:18,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:18,920 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863440783] [2021-05-22 00:08:18,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:19,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:19,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863440783] [2021-05-22 00:08:19,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863440783] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:19,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42274389] [2021-05-22 00:08:19,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:19,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-22 00:08:19,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:19,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42274389] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:19,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:19,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-05-22 00:08:19,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409696183] [2021-05-22 00:08:19,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-22 00:08:19,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:19,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-22 00:08:19,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2021-05-22 00:08:19,325 INFO L87 Difference]: Start difference. First operand 11760 states and 44060 transitions. Second operand has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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) [2021-05-22 00:08:21,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:21,019 INFO L93 Difference]: Finished difference Result 30308 states and 108012 transitions. [2021-05-22 00:08:21,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-22 00:08:21,020 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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 70 [2021-05-22 00:08:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:21,067 INFO L225 Difference]: With dead ends: 30308 [2021-05-22 00:08:21,067 INFO L226 Difference]: Without dead ends: 22576 [2021-05-22 00:08:21,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2493 ImplicationChecksByTransitivity, 1025.6ms TimeCoverageRelationStatistics Valid=1170, Invalid=6662, Unknown=0, NotChecked=0, Total=7832 [2021-05-22 00:08:21,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22576 states. [2021-05-22 00:08:21,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22576 to 12364. [2021-05-22 00:08:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12364 states, 12362 states have (on average 3.7155800032357225) internal successors, (45932), 12363 states have internal predecessors, (45932), 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) [2021-05-22 00:08:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12364 states to 12364 states and 45932 transitions. [2021-05-22 00:08:21,418 INFO L78 Accepts]: Start accepts. Automaton has 12364 states and 45932 transitions. Word has length 70 [2021-05-22 00:08:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:21,418 INFO L482 AbstractCegarLoop]: Abstraction has 12364 states and 45932 transitions. [2021-05-22 00:08:21,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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) [2021-05-22 00:08:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 12364 states and 45932 transitions. [2021-05-22 00:08:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:08:21,428 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:21,428 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:21,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:21,628 INFO L430 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:21,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:21,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1377004195, now seen corresponding path program 2 times [2021-05-22 00:08:21,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:21,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91108538] [2021-05-22 00:08:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:21,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:21,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91108538] [2021-05-22 00:08:21,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91108538] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:21,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86210830] [2021-05-22 00:08:21,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:21,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:08:21,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:21,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:08:21,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:22,027 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:08:22,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86210830] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:22,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:08:22,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2021-05-22 00:08:22,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967699316] [2021-05-22 00:08:22,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:08:22,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:22,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:08:22,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-05-22 00:08:22,030 INFO L87 Difference]: Start difference. First operand 12364 states and 45932 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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) [2021-05-22 00:08:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:22,467 INFO L93 Difference]: Finished difference Result 19560 states and 69572 transitions. [2021-05-22 00:08:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-22 00:08:22,467 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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 70 [2021-05-22 00:08:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:22,499 INFO L225 Difference]: With dead ends: 19560 [2021-05-22 00:08:22,500 INFO L226 Difference]: Without dead ends: 15874 [2021-05-22 00:08:22,500 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 388.9ms TimeCoverageRelationStatistics Valid=217, Invalid=1189, Unknown=0, NotChecked=0, Total=1406 [2021-05-22 00:08:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15874 states. [2021-05-22 00:08:22,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15874 to 9666. [2021-05-22 00:08:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9666 states, 9664 states have (on average 3.6803600993377485) internal successors, (35567), 9665 states have internal predecessors, (35567), 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) [2021-05-22 00:08:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9666 states to 9666 states and 35567 transitions. [2021-05-22 00:08:22,707 INFO L78 Accepts]: Start accepts. Automaton has 9666 states and 35567 transitions. Word has length 70 [2021-05-22 00:08:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:22,707 INFO L482 AbstractCegarLoop]: Abstraction has 9666 states and 35567 transitions. [2021-05-22 00:08:22,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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) [2021-05-22 00:08:22,707 INFO L276 IsEmpty]: Start isEmpty. Operand 9666 states and 35567 transitions. [2021-05-22 00:08:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:08:22,720 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:22,720 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:22,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-22 00:08:22,921 INFO L430 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:22,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:22,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1557602563, now seen corresponding path program 1 times [2021-05-22 00:08:22,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:22,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020457690] [2021-05-22 00:08:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 00:08:23,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:23,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020457690] [2021-05-22 00:08:23,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020457690] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:23,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621871772] [2021-05-22 00:08:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:23,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-22 00:08:23,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 00:08:23,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621871772] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:23,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:23,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-05-22 00:08:23,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031453226] [2021-05-22 00:08:23,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-22 00:08:23,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:23,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-22 00:08:23,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-05-22 00:08:23,363 INFO L87 Difference]: Start difference. First operand 9666 states and 35567 transitions. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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) [2021-05-22 00:08:24,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:24,244 INFO L93 Difference]: Finished difference Result 16634 states and 58839 transitions. [2021-05-22 00:08:24,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-22 00:08:24,244 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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 74 [2021-05-22 00:08:24,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:24,271 INFO L225 Difference]: With dead ends: 16634 [2021-05-22 00:08:24,271 INFO L226 Difference]: Without dead ends: 13364 [2021-05-22 00:08:24,271 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 733.0ms TimeCoverageRelationStatistics Valid=424, Invalid=1928, Unknown=0, NotChecked=0, Total=2352 [2021-05-22 00:08:24,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13364 states. [2021-05-22 00:08:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13364 to 8956. [2021-05-22 00:08:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8956 states, 8954 states have (on average 3.6385972749609112) internal successors, (32580), 8955 states have internal predecessors, (32580), 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) [2021-05-22 00:08:24,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8956 states to 8956 states and 32580 transitions. [2021-05-22 00:08:24,455 INFO L78 Accepts]: Start accepts. Automaton has 8956 states and 32580 transitions. Word has length 74 [2021-05-22 00:08:24,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:24,455 INFO L482 AbstractCegarLoop]: Abstraction has 8956 states and 32580 transitions. [2021-05-22 00:08:24,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 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) [2021-05-22 00:08:24,455 INFO L276 IsEmpty]: Start isEmpty. Operand 8956 states and 32580 transitions. [2021-05-22 00:08:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:08:24,467 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:24,467 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:24,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:24,669 INFO L430 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:24,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:24,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1442893275, now seen corresponding path program 2 times [2021-05-22 00:08:24,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:24,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003932875] [2021-05-22 00:08:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-22 00:08:24,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:24,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003932875] [2021-05-22 00:08:24,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003932875] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:24,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588181277] [2021-05-22 00:08:24,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:24,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:08:24,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:24,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-22 00:08:24,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-22 00:08:25,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588181277] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:25,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:25,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-05-22 00:08:25,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189385562] [2021-05-22 00:08:25,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-22 00:08:25,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:25,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-22 00:08:25,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-05-22 00:08:25,158 INFO L87 Difference]: Start difference. First operand 8956 states and 32580 transitions. Second operand has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 26 states have internal predecessors, (112), 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) [2021-05-22 00:08:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:25,842 INFO L93 Difference]: Finished difference Result 13060 states and 46272 transitions. [2021-05-22 00:08:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-22 00:08:25,842 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 26 states have internal predecessors, (112), 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 74 [2021-05-22 00:08:25,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:25,863 INFO L225 Difference]: With dead ends: 13060 [2021-05-22 00:08:25,863 INFO L226 Difference]: Without dead ends: 10198 [2021-05-22 00:08:25,864 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 643.4ms TimeCoverageRelationStatistics Valid=328, Invalid=1564, Unknown=0, NotChecked=0, Total=1892 [2021-05-22 00:08:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10198 states. [2021-05-22 00:08:26,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10198 to 7462. [2021-05-22 00:08:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7462 states, 7460 states have (on average 3.609785522788204) internal successors, (26929), 7461 states have internal predecessors, (26929), 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) [2021-05-22 00:08:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7462 states to 7462 states and 26929 transitions. [2021-05-22 00:08:26,036 INFO L78 Accepts]: Start accepts. Automaton has 7462 states and 26929 transitions. Word has length 74 [2021-05-22 00:08:26,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:26,037 INFO L482 AbstractCegarLoop]: Abstraction has 7462 states and 26929 transitions. [2021-05-22 00:08:26,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 26 states have internal predecessors, (112), 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) [2021-05-22 00:08:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 7462 states and 26929 transitions. [2021-05-22 00:08:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:08:26,046 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:26,046 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:26,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-22 00:08:26,251 INFO L430 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:26,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:26,251 INFO L82 PathProgramCache]: Analyzing trace with hash -784704609, now seen corresponding path program 3 times [2021-05-22 00:08:26,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:26,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87167421] [2021-05-22 00:08:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-22 00:08:26,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:26,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87167421] [2021-05-22 00:08:26,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87167421] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:26,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113039365] [2021-05-22 00:08:26,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:26,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-22 00:08:26,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:26,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-22 00:08:26,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-22 00:08:26,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113039365] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:26,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:26,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-05-22 00:08:26,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041828443] [2021-05-22 00:08:26,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-22 00:08:26,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:26,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-22 00:08:26,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-05-22 00:08:26,741 INFO L87 Difference]: Start difference. First operand 7462 states and 26929 transitions. Second operand has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 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) [2021-05-22 00:08:27,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:27,407 INFO L93 Difference]: Finished difference Result 9894 states and 35009 transitions. [2021-05-22 00:08:27,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:08:27,413 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 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 74 [2021-05-22 00:08:27,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:27,430 INFO L225 Difference]: With dead ends: 9894 [2021-05-22 00:08:27,430 INFO L226 Difference]: Without dead ends: 8178 [2021-05-22 00:08:27,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 633.3ms TimeCoverageRelationStatistics Valid=296, Invalid=1426, Unknown=0, NotChecked=0, Total=1722 [2021-05-22 00:08:27,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8178 states. [2021-05-22 00:08:27,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8178 to 6506. [2021-05-22 00:08:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6506 states, 6504 states have (on average 3.6010147601476015) internal successors, (23421), 6505 states have internal predecessors, (23421), 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) [2021-05-22 00:08:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6506 states to 6506 states and 23421 transitions. [2021-05-22 00:08:27,571 INFO L78 Accepts]: Start accepts. Automaton has 6506 states and 23421 transitions. Word has length 74 [2021-05-22 00:08:27,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:27,571 INFO L482 AbstractCegarLoop]: Abstraction has 6506 states and 23421 transitions. [2021-05-22 00:08:27,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 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) [2021-05-22 00:08:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 6506 states and 23421 transitions. [2021-05-22 00:08:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:08:27,579 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:27,579 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:27,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:27,781 INFO L430 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:27,781 INFO L82 PathProgramCache]: Analyzing trace with hash -41418819, now seen corresponding path program 4 times [2021-05-22 00:08:27,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:27,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193563065] [2021-05-22 00:08:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-22 00:08:27,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:27,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193563065] [2021-05-22 00:08:27,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193563065] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:27,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373519476] [2021-05-22 00:08:27,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:27,954 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-22 00:08:27,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:27,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-22 00:08:27,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-22 00:08:28,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373519476] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:28,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:28,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-05-22 00:08:28,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57127765] [2021-05-22 00:08:28,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-22 00:08:28,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:28,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-22 00:08:28,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-05-22 00:08:28,276 INFO L87 Difference]: Start difference. First operand 6506 states and 23421 transitions. Second operand has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 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) [2021-05-22 00:08:28,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:28,910 INFO L93 Difference]: Finished difference Result 8938 states and 31501 transitions. [2021-05-22 00:08:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:08:28,911 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 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 74 [2021-05-22 00:08:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:28,922 INFO L225 Difference]: With dead ends: 8938 [2021-05-22 00:08:28,923 INFO L226 Difference]: Without dead ends: 6136 [2021-05-22 00:08:28,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 628.9ms TimeCoverageRelationStatistics Valid=294, Invalid=1428, Unknown=0, NotChecked=0, Total=1722 [2021-05-22 00:08:28,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-05-22 00:08:29,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 5072. [2021-05-22 00:08:29,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5072 states, 5070 states have (on average 3.534516765285996) internal successors, (17920), 5071 states have internal predecessors, (17920), 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) [2021-05-22 00:08:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5072 states to 5072 states and 17920 transitions. [2021-05-22 00:08:29,026 INFO L78 Accepts]: Start accepts. Automaton has 5072 states and 17920 transitions. Word has length 74 [2021-05-22 00:08:29,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:29,026 INFO L482 AbstractCegarLoop]: Abstraction has 5072 states and 17920 transitions. [2021-05-22 00:08:29,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 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) [2021-05-22 00:08:29,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5072 states and 17920 transitions. [2021-05-22 00:08:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:08:29,032 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:29,032 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:29,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:29,233 INFO L430 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:29,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:29,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2120943387, now seen corresponding path program 5 times [2021-05-22 00:08:29,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:29,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857496207] [2021-05-22 00:08:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:08:29,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:29,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857496207] [2021-05-22 00:08:29,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857496207] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:29,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:29,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-22 00:08:29,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770913709] [2021-05-22 00:08:29,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:08:29,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:29,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:08:29,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-05-22 00:08:29,336 INFO L87 Difference]: Start difference. First operand 5072 states and 17920 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-05-22 00:08:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:29,634 INFO L93 Difference]: Finished difference Result 5832 states and 20388 transitions. [2021-05-22 00:08:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-22 00:08:29,634 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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 74 [2021-05-22 00:08:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:29,642 INFO L225 Difference]: With dead ends: 5832 [2021-05-22 00:08:29,642 INFO L226 Difference]: Without dead ends: 4236 [2021-05-22 00:08:29,642 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 229.9ms TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2021-05-22 00:08:29,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4236 states. [2021-05-22 00:08:29,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4236 to 4236. [2021-05-22 00:08:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4236 states, 4234 states have (on average 3.4888993859234767) internal successors, (14772), 4235 states have internal predecessors, (14772), 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) [2021-05-22 00:08:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4236 states to 4236 states and 14772 transitions. [2021-05-22 00:08:29,702 INFO L78 Accepts]: Start accepts. Automaton has 4236 states and 14772 transitions. Word has length 74 [2021-05-22 00:08:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:29,703 INFO L482 AbstractCegarLoop]: Abstraction has 4236 states and 14772 transitions. [2021-05-22 00:08:29,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-05-22 00:08:29,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4236 states and 14772 transitions. [2021-05-22 00:08:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:08:29,707 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:29,708 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:29,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-22 00:08:29,708 INFO L430 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:29,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:29,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1512025883, now seen corresponding path program 6 times [2021-05-22 00:08:29,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:29,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387067070] [2021-05-22 00:08:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:29,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:08:29,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:29,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387067070] [2021-05-22 00:08:29,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387067070] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:29,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:29,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-22 00:08:29,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329138652] [2021-05-22 00:08:29,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:08:29,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:29,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:08:29,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-05-22 00:08:29,805 INFO L87 Difference]: Start difference. First operand 4236 states and 14772 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-05-22 00:08:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:30,035 INFO L93 Difference]: Finished difference Result 3932 states and 13724 transitions. [2021-05-22 00:08:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-22 00:08:30,035 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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 74 [2021-05-22 00:08:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:30,035 INFO L225 Difference]: With dead ends: 3932 [2021-05-22 00:08:30,036 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 00:08:30,036 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 192.9ms TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2021-05-22 00:08:30,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 00:08:30,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 00:08:30,036 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) [2021-05-22 00:08:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 00:08:30,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2021-05-22 00:08:30,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:30,036 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 00:08:30,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-05-22 00:08:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 00:08:30,036 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 00:08:30,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-22 00:08:30,036 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 00:08:30,037 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-22 00:08:30,037 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:08:30,037 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:08:30,038 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:08:30,038 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:08:30,038 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:08:30,038 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:08:30,038 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:08:30,038 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:08:30,039 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 112 places, 103 transitions, 248 flow [2021-05-22 00:08:38,351 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 48789 states, 48779 states have (on average 4.35187273211833) internal successors, (212280), 48788 states have internal predecessors, (212280), 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) [2021-05-22 00:08:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 48789 states, 48779 states have (on average 4.35187273211833) internal successors, (212280), 48788 states have internal predecessors, (212280), 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) [2021-05-22 00:08:38,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-22 00:08:38,448 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:38,448 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:38,448 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-22 00:08:38,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:38,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1403611569, now seen corresponding path program 1 times [2021-05-22 00:08:38,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:38,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704063523] [2021-05-22 00:08:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:08:38,456 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:08:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:08:38,463 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:08:38,469 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-22 00:08:38,469 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-22 00:08:38,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-22 00:08:38,470 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-05-22 00:08:38,470 WARN L242 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-05-22 00:08:38,470 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-05-22 00:08:38,479 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,479 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,479 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,479 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,479 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,480 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,481 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,482 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,483 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,484 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,485 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,486 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,487 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,487 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,488 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,488 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,489 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,489 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,489 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,489 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,489 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,490 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,490 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,490 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,491 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,491 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,492 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,492 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,493 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,493 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:38,494 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-22 00:08:38,495 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-05-22 00:08:38,495 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:08:38,495 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:08:38,495 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:08:38,495 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:08:38,495 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:08:38,495 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:08:38,495 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:08:38,495 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:08:38,496 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 132 places, 120 transitions, 304 flow [2021-05-22 00:12:26,261 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 292869 states, 292857 states have (on average 5.1834171626425185) internal successors, (1518000), 292868 states have internal predecessors, (1518000), 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) [2021-05-22 00:12:26,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 292869 states, 292857 states have (on average 5.1834171626425185) internal successors, (1518000), 292868 states have internal predecessors, (1518000), 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) [2021-05-22 00:12:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 00:12:26,658 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:12:26,658 INFO L521 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] [2021-05-22 00:12:26,658 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:12:26,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:12:26,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1908114173, now seen corresponding path program 1 times [2021-05-22 00:12:26,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:12:26,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047020476] [2021-05-22 00:12:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:12:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:12:26,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:12:26,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:12:26,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047020476] [2021-05-22 00:12:26,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047020476] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:12:26,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:12:26,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 00:12:26,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107276504] [2021-05-22 00:12:26,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-22 00:12:26,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:12:26,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-22 00:12:26,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-22 00:12:27,042 INFO L87 Difference]: Start difference. First operand has 292869 states, 292857 states have (on average 5.1834171626425185) internal successors, (1518000), 292868 states have internal predecessors, (1518000), 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 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-05-22 00:12:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:12:30,912 INFO L93 Difference]: Finished difference Result 365261 states and 1798625 transitions. [2021-05-22 00:12:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 00:12:30,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 34 [2021-05-22 00:12:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:12:31,664 INFO L225 Difference]: With dead ends: 365261 [2021-05-22 00:12:31,664 INFO L226 Difference]: Without dead ends: 173040 [2021-05-22 00:12:31,664 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-05-22 00:12:34,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173040 states. [2021-05-22 00:12:38,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173040 to 173040. [2021-05-22 00:12:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173040 states, 173035 states have (on average 4.865917299968214) internal successors, (841974), 173039 states have internal predecessors, (841974), 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) [2021-05-22 00:12:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173040 states to 173040 states and 841974 transitions. [2021-05-22 00:12:39,868 INFO L78 Accepts]: Start accepts. Automaton has 173040 states and 841974 transitions. Word has length 34 [2021-05-22 00:12:39,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:12:39,868 INFO L482 AbstractCegarLoop]: Abstraction has 173040 states and 841974 transitions. [2021-05-22 00:12:39,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-05-22 00:12:39,868 INFO L276 IsEmpty]: Start isEmpty. Operand 173040 states and 841974 transitions. [2021-05-22 00:12:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-22 00:12:39,868 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:12:39,868 INFO L521 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] [2021-05-22 00:12:39,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-22 00:12:39,869 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:12:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:12:39,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1086704383, now seen corresponding path program 1 times [2021-05-22 00:12:39,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:12:39,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627743383] [2021-05-22 00:12:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:12:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:12:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:12:39,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:12:39,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627743383] [2021-05-22 00:12:39,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627743383] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:12:39,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:12:39,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-22 00:12:39,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036193441] [2021-05-22 00:12:39,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:12:39,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:12:39,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:12:39,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-05-22 00:12:39,966 INFO L87 Difference]: Start difference. First operand 173040 states and 841974 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 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) [2021-05-22 00:12:42,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:12:42,921 INFO L93 Difference]: Finished difference Result 321012 states and 1505068 transitions. [2021-05-22 00:12:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-22 00:12:42,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 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 [2021-05-22 00:12:42,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:12:44,094 INFO L225 Difference]: With dead ends: 321012 [2021-05-22 00:12:44,095 INFO L226 Difference]: Without dead ends: 271144 [2021-05-22 00:12:44,095 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 137.8ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-05-22 00:12:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271144 states. [2021-05-22 00:12:53,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271144 to 175908. [2021-05-22 00:12:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175908 states, 175904 states have (on average 4.800391122430416) internal successors, (844408), 175907 states have internal predecessors, (844408), 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) [2021-05-22 00:12:54,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175908 states to 175908 states and 844408 transitions. [2021-05-22 00:12:54,777 INFO L78 Accepts]: Start accepts. Automaton has 175908 states and 844408 transitions. Word has length 46 [2021-05-22 00:12:54,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:12:54,777 INFO L482 AbstractCegarLoop]: Abstraction has 175908 states and 844408 transitions. [2021-05-22 00:12:54,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 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) [2021-05-22 00:12:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 175908 states and 844408 transitions. [2021-05-22 00:12:54,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-22 00:12:54,778 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:12:54,778 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:12:54,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-22 00:12:54,779 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:12:54,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:12:54,779 INFO L82 PathProgramCache]: Analyzing trace with hash -327900800, now seen corresponding path program 1 times [2021-05-22 00:12:54,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:12:54,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602389344] [2021-05-22 00:12:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:12:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:12:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:12:54,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:12:54,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602389344] [2021-05-22 00:12:54,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602389344] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:12:54,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715008037] [2021-05-22 00:12:54,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:12:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:12:54,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-22 00:12:54,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:12:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:12:55,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715008037] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:12:55,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:12:55,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-05-22 00:12:55,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173815072] [2021-05-22 00:12:55,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-22 00:12:55,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:12:55,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-22 00:12:55,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-05-22 00:12:55,598 INFO L87 Difference]: Start difference. First operand 175908 states and 844408 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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) [2021-05-22 00:12:58,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:12:58,659 INFO L93 Difference]: Finished difference Result 320548 states and 1488640 transitions. [2021-05-22 00:12:58,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-22 00:12:58,660 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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 56 [2021-05-22 00:12:58,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:13:00,276 INFO L225 Difference]: With dead ends: 320548 [2021-05-22 00:13:00,276 INFO L226 Difference]: Without dead ends: 270068 [2021-05-22 00:13:00,277 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 791.3ms TimeCoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2021-05-22 00:13:02,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270068 states. [2021-05-22 00:13:07,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270068 to 176716. [2021-05-22 00:13:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176716 states, 176712 states have (on average 4.7422246366969985) internal successors, (838008), 176715 states have internal predecessors, (838008), 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) [2021-05-22 00:13:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176716 states to 176716 states and 838008 transitions. [2021-05-22 00:13:08,623 INFO L78 Accepts]: Start accepts. Automaton has 176716 states and 838008 transitions. Word has length 56 [2021-05-22 00:13:08,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:13:08,624 INFO L482 AbstractCegarLoop]: Abstraction has 176716 states and 838008 transitions. [2021-05-22 00:13:08,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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) [2021-05-22 00:13:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand 176716 states and 838008 transitions. [2021-05-22 00:13:08,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:13:08,625 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:13:08,625 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:13:08,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:13:08,826 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:13:08,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:13:08,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1990760464, now seen corresponding path program 1 times [2021-05-22 00:13:08,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:13:08,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259283882] [2021-05-22 00:13:08,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:13:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:13:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:13:08,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:13:08,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259283882] [2021-05-22 00:13:08,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259283882] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:13:08,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734349267] [2021-05-22 00:13:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:13:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:13:09,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:13:09,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:13:09,789 WARN L205 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2021-05-22 00:13:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-22 00:13:09,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734349267] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:13:09,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:13:09,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2021-05-22 00:13:09,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528604591] [2021-05-22 00:13:09,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:13:09,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:13:09,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:13:09,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2021-05-22 00:13:09,817 INFO L87 Difference]: Start difference. First operand 176716 states and 838008 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2021-05-22 00:13:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:13:13,596 INFO L93 Difference]: Finished difference Result 407204 states and 1857498 transitions. [2021-05-22 00:13:13,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:13:13,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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 60 [2021-05-22 00:13:13,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:13:16,339 INFO L225 Difference]: With dead ends: 407204 [2021-05-22 00:13:16,340 INFO L226 Difference]: Without dead ends: 390044 [2021-05-22 00:13:16,340 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 451.2ms TimeCoverageRelationStatistics Valid=260, Invalid=1380, Unknown=0, NotChecked=0, Total=1640 [2021-05-22 00:13:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390044 states. [2021-05-22 00:13:26,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390044 to 173892. [2021-05-22 00:13:26,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173892 states, 173888 states have (on average 4.746227456753773) internal successors, (825312), 173891 states have internal predecessors, (825312), 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) [2021-05-22 00:13:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173892 states to 173892 states and 825312 transitions. [2021-05-22 00:13:27,692 INFO L78 Accepts]: Start accepts. Automaton has 173892 states and 825312 transitions. Word has length 60 [2021-05-22 00:13:27,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:13:27,692 INFO L482 AbstractCegarLoop]: Abstraction has 173892 states and 825312 transitions. [2021-05-22 00:13:27,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2021-05-22 00:13:27,693 INFO L276 IsEmpty]: Start isEmpty. Operand 173892 states and 825312 transitions. [2021-05-22 00:13:27,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:13:27,694 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:13:27,694 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:13:27,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:13:27,895 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:13:27,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:13:27,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1469779694, now seen corresponding path program 2 times [2021-05-22 00:13:27,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:13:27,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920263134] [2021-05-22 00:13:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:13:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:13:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:13:28,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:13:28,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920263134] [2021-05-22 00:13:28,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920263134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:13:28,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120997614] [2021-05-22 00:13:28,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:13:28,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:13:28,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:13:28,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:13:28,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:13:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-22 00:13:28,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120997614] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:13:28,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:13:28,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2021-05-22 00:13:28,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814636628] [2021-05-22 00:13:28,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:13:28,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:13:28,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:13:28,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2021-05-22 00:13:28,336 INFO L87 Difference]: Start difference. First operand 173892 states and 825312 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2021-05-22 00:13:31,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:13:31,740 INFO L93 Difference]: Finished difference Result 403532 states and 1838354 transitions. [2021-05-22 00:13:31,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:13:31,741 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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 60 [2021-05-22 00:13:31,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:13:33,891 INFO L225 Difference]: With dead ends: 403532 [2021-05-22 00:13:33,891 INFO L226 Difference]: Without dead ends: 386228 [2021-05-22 00:13:33,891 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 464.8ms TimeCoverageRelationStatistics Valid=260, Invalid=1380, Unknown=0, NotChecked=0, Total=1640 [2021-05-22 00:13:37,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386228 states. [2021-05-22 00:13:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386228 to 159892. [2021-05-22 00:13:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159892 states, 159889 states have (on average 4.7664066946444095) internal successors, (762096), 159891 states have internal predecessors, (762096), 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) [2021-05-22 00:13:43,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159892 states to 159892 states and 762096 transitions. [2021-05-22 00:13:43,988 INFO L78 Accepts]: Start accepts. Automaton has 159892 states and 762096 transitions. Word has length 60 [2021-05-22 00:13:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:13:43,989 INFO L482 AbstractCegarLoop]: Abstraction has 159892 states and 762096 transitions. [2021-05-22 00:13:43,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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) [2021-05-22 00:13:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 159892 states and 762096 transitions. [2021-05-22 00:13:43,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-22 00:13:43,993 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:13:43,993 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:13:44,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-05-22 00:13:44,198 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:13:44,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:13:44,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1479281632, now seen corresponding path program 1 times [2021-05-22 00:13:44,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:13:44,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554144412] [2021-05-22 00:13:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:13:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:13:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:13:44,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:13:44,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554144412] [2021-05-22 00:13:44,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554144412] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:13:44,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029781067] [2021-05-22 00:13:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:13:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:13:44,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 00:13:44,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:13:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:13:44,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029781067] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:13:44,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:13:44,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-05-22 00:13:44,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603855965] [2021-05-22 00:13:44,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-22 00:13:44,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:13:44,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-22 00:13:44,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-05-22 00:13:44,541 INFO L87 Difference]: Start difference. First operand 159892 states and 762096 transitions. Second operand has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 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) [2021-05-22 00:13:47,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:13:47,574 INFO L93 Difference]: Finished difference Result 290088 states and 1339226 transitions. [2021-05-22 00:13:47,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-22 00:13:47,575 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 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 66 [2021-05-22 00:13:47,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:13:49,536 INFO L225 Difference]: With dead ends: 290088 [2021-05-22 00:13:49,536 INFO L226 Difference]: Without dead ends: 239680 [2021-05-22 00:13:49,553 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 285.2ms TimeCoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2021-05-22 00:13:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239680 states. [2021-05-22 00:13:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239680 to 163360. [2021-05-22 00:13:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163360 states, 163357 states have (on average 4.670543655919245) internal successors, (762966), 163359 states have internal predecessors, (762966), 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) [2021-05-22 00:13:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163360 states to 163360 states and 762966 transitions. [2021-05-22 00:13:57,963 INFO L78 Accepts]: Start accepts. Automaton has 163360 states and 762966 transitions. Word has length 66 [2021-05-22 00:13:57,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:13:57,963 INFO L482 AbstractCegarLoop]: Abstraction has 163360 states and 762966 transitions. [2021-05-22 00:13:57,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.75) internal successors, (114), 24 states have internal predecessors, (114), 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) [2021-05-22 00:13:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 163360 states and 762966 transitions. [2021-05-22 00:13:57,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:13:57,974 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:13:57,974 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:13:58,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-22 00:13:58,175 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:13:58,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:13:58,175 INFO L82 PathProgramCache]: Analyzing trace with hash 848577072, now seen corresponding path program 1 times [2021-05-22 00:13:58,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:13:58,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298357687] [2021-05-22 00:13:58,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:13:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:13:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:13:58,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:13:58,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298357687] [2021-05-22 00:13:58,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298357687] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:13:58,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349984159] [2021-05-22 00:13:58,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:13:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:13:58,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-22 00:13:58,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:13:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:13:58,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349984159] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:13:58,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:13:58,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-05-22 00:13:58,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793359333] [2021-05-22 00:13:58,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-22 00:13:58,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:13:58,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-22 00:13:58,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2021-05-22 00:13:58,576 INFO L87 Difference]: Start difference. First operand 163360 states and 762966 transitions. Second operand has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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) [2021-05-22 00:13:59,528 WARN L205 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-05-22 00:14:04,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:14:04,199 INFO L93 Difference]: Finished difference Result 560592 states and 2509198 transitions. [2021-05-22 00:14:04,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-22 00:14:04,200 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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 70 [2021-05-22 00:14:04,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:14:07,147 INFO L225 Difference]: With dead ends: 560592 [2021-05-22 00:14:07,147 INFO L226 Difference]: Without dead ends: 541816 [2021-05-22 00:14:07,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1084.3ms TimeCoverageRelationStatistics Valid=783, Invalid=3377, Unknown=0, NotChecked=0, Total=4160 [2021-05-22 00:14:10,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541816 states. [2021-05-22 00:14:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541816 to 158448. [2021-05-22 00:14:17,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158448 states, 158445 states have (on average 4.682621729937833) internal successors, (741938), 158447 states have internal predecessors, (741938), 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) [2021-05-22 00:14:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158448 states to 158448 states and 741938 transitions. [2021-05-22 00:14:18,395 INFO L78 Accepts]: Start accepts. Automaton has 158448 states and 741938 transitions. Word has length 70 [2021-05-22 00:14:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:14:18,395 INFO L482 AbstractCegarLoop]: Abstraction has 158448 states and 741938 transitions. [2021-05-22 00:14:18,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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) [2021-05-22 00:14:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 158448 states and 741938 transitions. [2021-05-22 00:14:18,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:14:18,405 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:14:18,405 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:14:18,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-05-22 00:14:18,606 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:14:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:14:18,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1388005810, now seen corresponding path program 2 times [2021-05-22 00:14:18,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:14:18,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440651280] [2021-05-22 00:14:18,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:14:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:14:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:14:18,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:14:18,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440651280] [2021-05-22 00:14:18,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440651280] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:14:18,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379994679] [2021-05-22 00:14:18,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:14:18,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:14:18,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:14:18,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:14:18,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:14:19,447 WARN L205 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-05-22 00:14:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:14:19,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379994679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:14:19,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:14:19,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2021-05-22 00:14:19,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709318354] [2021-05-22 00:14:19,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:14:19,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:14:19,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:14:19,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-05-22 00:14:19,695 INFO L87 Difference]: Start difference. First operand 158448 states and 741938 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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) [2021-05-22 00:14:22,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:14:22,661 INFO L93 Difference]: Finished difference Result 358404 states and 1609490 transitions. [2021-05-22 00:14:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:14:22,661 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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 70 [2021-05-22 00:14:22,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:14:25,216 INFO L225 Difference]: With dead ends: 358404 [2021-05-22 00:14:25,217 INFO L226 Difference]: Without dead ends: 340780 [2021-05-22 00:14:25,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1033.3ms TimeCoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2021-05-22 00:14:27,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340780 states. [2021-05-22 00:14:33,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340780 to 149888. [2021-05-22 00:14:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149888 states, 149885 states have (on average 4.672368816092337) internal successors, (700318), 149887 states have internal predecessors, (700318), 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) [2021-05-22 00:14:34,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149888 states to 149888 states and 700318 transitions. [2021-05-22 00:14:34,612 INFO L78 Accepts]: Start accepts. Automaton has 149888 states and 700318 transitions. Word has length 70 [2021-05-22 00:14:34,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:14:34,612 INFO L482 AbstractCegarLoop]: Abstraction has 149888 states and 700318 transitions. [2021-05-22 00:14:34,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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) [2021-05-22 00:14:34,613 INFO L276 IsEmpty]: Start isEmpty. Operand 149888 states and 700318 transitions. [2021-05-22 00:14:34,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:14:34,624 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:14:34,624 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:14:34,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:14:34,829 INFO L430 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:14:34,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:14:34,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1060657690, now seen corresponding path program 1 times [2021-05-22 00:14:34,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:14:34,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844945709] [2021-05-22 00:14:34,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:14:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:14:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:14:34,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:14:34,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844945709] [2021-05-22 00:14:34,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844945709] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:14:34,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326490273] [2021-05-22 00:14:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:14:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:14:35,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-22 00:14:35,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:14:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:14:35,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326490273] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:14:35,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:14:35,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-05-22 00:14:35,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462145505] [2021-05-22 00:14:35,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-22 00:14:35,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:14:35,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-22 00:14:35,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2021-05-22 00:14:35,222 INFO L87 Difference]: Start difference. First operand 149888 states and 700318 transitions. Second operand has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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) [2021-05-22 00:14:42,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:14:42,369 INFO L93 Difference]: Finished difference Result 624984 states and 2784362 transitions. [2021-05-22 00:14:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-22 00:14:42,370 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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 70 [2021-05-22 00:14:42,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:14:45,623 INFO L225 Difference]: With dead ends: 624984 [2021-05-22 00:14:45,624 INFO L226 Difference]: Without dead ends: 603544 [2021-05-22 00:14:45,625 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3475 ImplicationChecksByTransitivity, 1742.1ms TimeCoverageRelationStatistics Valid=1838, Invalid=8874, Unknown=0, NotChecked=0, Total=10712 [2021-05-22 00:14:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603544 states. [2021-05-22 00:14:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603544 to 168732. [2021-05-22 00:14:57,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168732 states, 168729 states have (on average 4.671704330612995) internal successors, (788252), 168731 states have internal predecessors, (788252), 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) [2021-05-22 00:14:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168732 states to 168732 states and 788252 transitions. [2021-05-22 00:14:58,032 INFO L78 Accepts]: Start accepts. Automaton has 168732 states and 788252 transitions. Word has length 70 [2021-05-22 00:14:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:14:58,033 INFO L482 AbstractCegarLoop]: Abstraction has 168732 states and 788252 transitions. [2021-05-22 00:14:58,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 states have internal predecessors, (122), 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) [2021-05-22 00:14:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 168732 states and 788252 transitions. [2021-05-22 00:14:58,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:14:58,045 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:14:58,045 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:14:58,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:14:58,246 INFO L430 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:14:58,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:14:58,246 INFO L82 PathProgramCache]: Analyzing trace with hash -655905858, now seen corresponding path program 2 times [2021-05-22 00:14:58,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:14:58,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331196017] [2021-05-22 00:14:58,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:14:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:14:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:14:58,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:14:58,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331196017] [2021-05-22 00:14:58,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331196017] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:14:58,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587813986] [2021-05-22 00:14:58,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:14:59,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:14:59,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:14:59,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:14:59,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:14:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-22 00:14:59,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587813986] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:14:59,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:14:59,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 25 [2021-05-22 00:14:59,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138340226] [2021-05-22 00:14:59,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-22 00:14:59,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:14:59,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-22 00:14:59,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-05-22 00:14:59,264 INFO L87 Difference]: Start difference. First operand 168732 states and 788252 transitions. Second operand has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 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) [2021-05-22 00:15:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:15:06,796 INFO L93 Difference]: Finished difference Result 631648 states and 2794498 transitions. [2021-05-22 00:15:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-22 00:15:06,797 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 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 70 [2021-05-22 00:15:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:15:11,600 INFO L225 Difference]: With dead ends: 631648 [2021-05-22 00:15:11,601 INFO L226 Difference]: Without dead ends: 579728 [2021-05-22 00:15:11,601 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1921 ImplicationChecksByTransitivity, 1402.1ms TimeCoverageRelationStatistics Valid=1108, Invalid=5372, Unknown=0, NotChecked=0, Total=6480 [2021-05-22 00:15:14,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579728 states. [2021-05-22 00:15:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579728 to 155272. [2021-05-22 00:15:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155272 states, 155269 states have (on average 4.657555597060585) internal successors, (723174), 155271 states have internal predecessors, (723174), 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) [2021-05-22 00:15:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155272 states to 155272 states and 723174 transitions. [2021-05-22 00:15:23,844 INFO L78 Accepts]: Start accepts. Automaton has 155272 states and 723174 transitions. Word has length 70 [2021-05-22 00:15:23,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:15:23,844 INFO L482 AbstractCegarLoop]: Abstraction has 155272 states and 723174 transitions. [2021-05-22 00:15:23,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 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) [2021-05-22 00:15:23,844 INFO L276 IsEmpty]: Start isEmpty. Operand 155272 states and 723174 transitions. [2021-05-22 00:15:23,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:15:23,855 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:15:23,855 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:15:24,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-22 00:15:24,056 INFO L430 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:15:24,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:15:24,057 INFO L82 PathProgramCache]: Analyzing trace with hash 442367838, now seen corresponding path program 3 times [2021-05-22 00:15:24,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:15:24,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779991698] [2021-05-22 00:15:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:15:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:15:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:15:24,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:15:24,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779991698] [2021-05-22 00:15:24,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779991698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:15:24,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998040872] [2021-05-22 00:15:24,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:15:24,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-05-22 00:15:24,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:15:24,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:15:24,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:15:24,725 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:15:24,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998040872] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:15:24,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:15:24,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2021-05-22 00:15:24,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964845371] [2021-05-22 00:15:24,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:15:24,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:15:24,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:15:24,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-05-22 00:15:24,728 INFO L87 Difference]: Start difference. First operand 155272 states and 723174 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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) [2021-05-22 00:15:28,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:15:28,062 INFO L93 Difference]: Finished difference Result 336740 states and 1505834 transitions. [2021-05-22 00:15:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:15:28,063 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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 70 [2021-05-22 00:15:28,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:15:29,971 INFO L225 Difference]: With dead ends: 336740 [2021-05-22 00:15:29,972 INFO L226 Difference]: Without dead ends: 317964 [2021-05-22 00:15:29,972 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 533.4ms TimeCoverageRelationStatistics Valid=239, Invalid=1243, Unknown=0, NotChecked=0, Total=1482 [2021-05-22 00:15:32,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317964 states. [2021-05-22 00:15:36,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317964 to 145416. [2021-05-22 00:15:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145416 states, 145413 states have (on average 4.657671597450022) internal successors, (677286), 145415 states have internal predecessors, (677286), 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) [2021-05-22 00:15:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145416 states to 145416 states and 677286 transitions. [2021-05-22 00:15:38,425 INFO L78 Accepts]: Start accepts. Automaton has 145416 states and 677286 transitions. Word has length 70 [2021-05-22 00:15:38,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:15:38,425 INFO L482 AbstractCegarLoop]: Abstraction has 145416 states and 677286 transitions. [2021-05-22 00:15:38,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 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) [2021-05-22 00:15:38,425 INFO L276 IsEmpty]: Start isEmpty. Operand 145416 states and 677286 transitions. [2021-05-22 00:15:38,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:15:38,447 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:15:38,447 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:15:38,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:15:38,657 INFO L430 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:15:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:15:38,657 INFO L82 PathProgramCache]: Analyzing trace with hash -818909334, now seen corresponding path program 1 times [2021-05-22 00:15:38,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:15:38,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804848904] [2021-05-22 00:15:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:15:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:15:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-22 00:15:38,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:15:38,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804848904] [2021-05-22 00:15:38,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804848904] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:15:38,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788963989] [2021-05-22 00:15:38,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:15:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:15:38,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-22 00:15:38,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:15:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-22 00:15:39,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788963989] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:15:39,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:15:39,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-05-22 00:15:39,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136824863] [2021-05-22 00:15:39,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-22 00:15:39,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:15:39,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-22 00:15:39,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-05-22 00:15:39,178 INFO L87 Difference]: Start difference. First operand 145416 states and 677286 transitions. Second operand has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 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) [2021-05-22 00:15:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:15:44,176 INFO L93 Difference]: Finished difference Result 432594 states and 1920831 transitions. [2021-05-22 00:15:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-22 00:15:44,176 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 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 74 [2021-05-22 00:15:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:15:47,286 INFO L225 Difference]: With dead ends: 432594 [2021-05-22 00:15:47,287 INFO L226 Difference]: Without dead ends: 425754 [2021-05-22 00:15:47,287 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 959.8ms TimeCoverageRelationStatistics Valid=618, Invalid=2574, Unknown=0, NotChecked=0, Total=3192 [2021-05-22 00:15:50,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425754 states. [2021-05-22 00:15:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425754 to 143376. [2021-05-22 00:15:55,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143376 states, 143373 states have (on average 4.654000404539209) internal successors, (667258), 143375 states have internal predecessors, (667258), 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) [2021-05-22 00:15:57,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143376 states to 143376 states and 667258 transitions. [2021-05-22 00:15:57,031 INFO L78 Accepts]: Start accepts. Automaton has 143376 states and 667258 transitions. Word has length 74 [2021-05-22 00:15:57,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:15:57,032 INFO L482 AbstractCegarLoop]: Abstraction has 143376 states and 667258 transitions. [2021-05-22 00:15:57,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 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) [2021-05-22 00:15:57,032 INFO L276 IsEmpty]: Start isEmpty. Operand 143376 states and 667258 transitions. [2021-05-22 00:15:57,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:15:57,064 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:15:57,064 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:15:57,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-05-22 00:15:57,265 INFO L430 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:15:57,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:15:57,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1239475080, now seen corresponding path program 2 times [2021-05-22 00:15:57,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:15:57,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392497603] [2021-05-22 00:15:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:15:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:15:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-22 00:15:57,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:15:57,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392497603] [2021-05-22 00:15:57,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392497603] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:15:57,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716832698] [2021-05-22 00:15:57,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:15:57,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:15:57,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:15:57,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-22 00:15:57,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:15:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-22 00:15:57,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716832698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:15:57,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:15:57,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-05-22 00:15:57,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434877454] [2021-05-22 00:15:57,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-22 00:15:57,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:15:57,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-22 00:15:57,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2021-05-22 00:15:57,712 INFO L87 Difference]: Start difference. First operand 143376 states and 667258 transitions. Second operand has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 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) [2021-05-22 00:16:02,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:16:02,244 INFO L93 Difference]: Finished difference Result 421370 states and 1872667 transitions. [2021-05-22 00:16:02,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-22 00:16:02,245 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 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 74 [2021-05-22 00:16:02,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:16:04,649 INFO L225 Difference]: With dead ends: 421370 [2021-05-22 00:16:04,649 INFO L226 Difference]: Without dead ends: 412730 [2021-05-22 00:16:04,649 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 935.9ms TimeCoverageRelationStatistics Valid=618, Invalid=2574, Unknown=0, NotChecked=0, Total=3192 [2021-05-22 00:16:06,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412730 states. [2021-05-22 00:16:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412730 to 139496. [2021-05-22 00:16:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139496 states, 139493 states have (on average 4.656850164524385) internal successors, (649598), 139495 states have internal predecessors, (649598), 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) [2021-05-22 00:16:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139496 states to 139496 states and 649598 transitions. [2021-05-22 00:16:13,738 INFO L78 Accepts]: Start accepts. Automaton has 139496 states and 649598 transitions. Word has length 74 [2021-05-22 00:16:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:16:13,739 INFO L482 AbstractCegarLoop]: Abstraction has 139496 states and 649598 transitions. [2021-05-22 00:16:13,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 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) [2021-05-22 00:16:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 139496 states and 649598 transitions. [2021-05-22 00:16:13,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:16:13,756 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:16:13,757 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:16:13,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-05-22 00:16:13,957 INFO L430 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:16:13,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:16:13,958 INFO L82 PathProgramCache]: Analyzing trace with hash 780534514, now seen corresponding path program 3 times [2021-05-22 00:16:13,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:16:13,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769608992] [2021-05-22 00:16:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:16:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:16:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:16:14,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:16:14,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769608992] [2021-05-22 00:16:14,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769608992] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:16:14,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:16:14,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-22 00:16:14,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106245351] [2021-05-22 00:16:14,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:16:14,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:16:14,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:16:14,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-05-22 00:16:14,077 INFO L87 Difference]: Start difference. First operand 139496 states and 649598 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-05-22 00:16:18,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:16:18,171 INFO L93 Difference]: Finished difference Result 414146 states and 1841727 transitions. [2021-05-22 00:16:18,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-22 00:16:18,171 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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 74 [2021-05-22 00:16:18,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:16:19,877 INFO L225 Difference]: With dead ends: 414146 [2021-05-22 00:16:19,877 INFO L226 Difference]: Without dead ends: 407306 [2021-05-22 00:16:19,877 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 355.7ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-05-22 00:16:22,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407306 states. [2021-05-22 00:16:27,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407306 to 133536. [2021-05-22 00:16:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133536 states, 133533 states have (on average 4.666546846097968) internal successors, (623138), 133535 states have internal predecessors, (623138), 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) [2021-05-22 00:16:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133536 states to 133536 states and 623138 transitions. [2021-05-22 00:16:28,391 INFO L78 Accepts]: Start accepts. Automaton has 133536 states and 623138 transitions. Word has length 74 [2021-05-22 00:16:28,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:16:28,391 INFO L482 AbstractCegarLoop]: Abstraction has 133536 states and 623138 transitions. [2021-05-22 00:16:28,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-05-22 00:16:28,391 INFO L276 IsEmpty]: Start isEmpty. Operand 133536 states and 623138 transitions. [2021-05-22 00:16:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:16:28,405 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:16:28,406 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:16:28,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-05-22 00:16:28,406 INFO L430 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:16:28,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:16:28,406 INFO L82 PathProgramCache]: Analyzing trace with hash 259553744, now seen corresponding path program 4 times [2021-05-22 00:16:28,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:16:28,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596722367] [2021-05-22 00:16:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:16:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:16:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:16:28,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:16:28,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596722367] [2021-05-22 00:16:28,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596722367] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:16:28,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:16:28,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-22 00:16:28,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873084736] [2021-05-22 00:16:28,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:16:28,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:16:28,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:16:28,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-05-22 00:16:28,519 INFO L87 Difference]: Start difference. First operand 133536 states and 623138 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-05-22 00:16:29,087 WARN L205 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2021-05-22 00:16:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:16:32,585 INFO L93 Difference]: Finished difference Result 409490 states and 1822019 transitions. [2021-05-22 00:16:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-22 00:16:32,585 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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 74 [2021-05-22 00:16:32,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:16:34,958 INFO L225 Difference]: With dead ends: 409490 [2021-05-22 00:16:34,958 INFO L226 Difference]: Without dead ends: 400850 [2021-05-22 00:16:34,958 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 930.6ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-05-22 00:16:37,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400850 states. [2021-05-22 00:16:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400850 to 129696. [2021-05-22 00:16:42,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129696 states, 129693 states have (on average 4.669473294626541) internal successors, (605598), 129695 states have internal predecessors, (605598), 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) [2021-05-22 00:16:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129696 states to 129696 states and 605598 transitions. [2021-05-22 00:16:43,832 INFO L78 Accepts]: Start accepts. Automaton has 129696 states and 605598 transitions. Word has length 74 [2021-05-22 00:16:43,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:16:43,832 INFO L482 AbstractCegarLoop]: Abstraction has 129696 states and 605598 transitions. [2021-05-22 00:16:43,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-05-22 00:16:43,832 INFO L276 IsEmpty]: Start isEmpty. Operand 129696 states and 605598 transitions. [2021-05-22 00:16:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:16:43,858 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:16:43,858 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:16:43,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-22 00:16:43,858 INFO L430 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:16:43,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:16:43,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1612947858, now seen corresponding path program 5 times [2021-05-22 00:16:43,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:16:43,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101554760] [2021-05-22 00:16:43,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:16:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:16:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:16:44,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:16:44,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101554760] [2021-05-22 00:16:44,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101554760] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:16:44,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:16:44,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-22 00:16:44,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541284003] [2021-05-22 00:16:44,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:16:44,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:16:44,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:16:44,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-05-22 00:16:44,036 INFO L87 Difference]: Start difference. First operand 129696 states and 605598 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-05-22 00:16:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:16:48,100 INFO L93 Difference]: Finished difference Result 402386 states and 1791399 transitions. [2021-05-22 00:16:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-22 00:16:48,100 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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 74 [2021-05-22 00:16:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:16:51,395 INFO L225 Difference]: With dead ends: 402386 [2021-05-22 00:16:51,395 INFO L226 Difference]: Without dead ends: 395546 [2021-05-22 00:16:51,395 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 527.4ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-05-22 00:16:53,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395546 states. [2021-05-22 00:16:59,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395546 to 123736. [2021-05-22 00:16:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123736 states, 123733 states have (on average 4.680546014401979) internal successors, (579138), 123735 states have internal predecessors, (579138), 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) [2021-05-22 00:17:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123736 states to 123736 states and 579138 transitions. [2021-05-22 00:17:00,493 INFO L78 Accepts]: Start accepts. Automaton has 123736 states and 579138 transitions. Word has length 74 [2021-05-22 00:17:00,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:17:00,494 INFO L482 AbstractCegarLoop]: Abstraction has 123736 states and 579138 transitions. [2021-05-22 00:17:00,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-05-22 00:17:00,494 INFO L276 IsEmpty]: Start isEmpty. Operand 123736 states and 579138 transitions. [2021-05-22 00:17:00,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:17:00,508 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:17:00,508 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:17:00,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-05-22 00:17:00,508 INFO L430 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:17:00,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:17:00,508 INFO L82 PathProgramCache]: Analyzing trace with hash 2073101934, now seen corresponding path program 6 times [2021-05-22 00:17:00,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:17:00,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986138860] [2021-05-22 00:17:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:17:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:17:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:17:00,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:17:00,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986138860] [2021-05-22 00:17:00,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986138860] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:17:00,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:17:00,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-22 00:17:00,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268434917] [2021-05-22 00:17:00,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:17:00,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:17:00,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:17:00,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-05-22 00:17:00,615 INFO L87 Difference]: Start difference. First operand 123736 states and 579138 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-05-22 00:17:03,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:17:03,981 INFO L93 Difference]: Finished difference Result 391162 states and 1743235 transitions. [2021-05-22 00:17:03,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-22 00:17:03,982 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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 74 [2021-05-22 00:17:03,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:17:06,083 INFO L225 Difference]: With dead ends: 391162 [2021-05-22 00:17:06,084 INFO L226 Difference]: Without dead ends: 382090 [2021-05-22 00:17:06,084 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 373.3ms TimeCoverageRelationStatistics Valid=381, Invalid=1425, Unknown=0, NotChecked=0, Total=1806 [2021-05-22 00:17:08,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382090 states. [2021-05-22 00:17:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382090 to 110160. [2021-05-22 00:17:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110160 states, 110158 states have (on average 4.735289311715899) internal successors, (521630), 110159 states have internal predecessors, (521630), 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) [2021-05-22 00:17:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110160 states to 110160 states and 521630 transitions. [2021-05-22 00:17:13,498 INFO L78 Accepts]: Start accepts. Automaton has 110160 states and 521630 transitions. Word has length 74 [2021-05-22 00:17:13,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:17:13,498 INFO L482 AbstractCegarLoop]: Abstraction has 110160 states and 521630 transitions. [2021-05-22 00:17:13,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 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) [2021-05-22 00:17:13,498 INFO L276 IsEmpty]: Start isEmpty. Operand 110160 states and 521630 transitions. [2021-05-22 00:17:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-05-22 00:17:13,515 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:17:13,515 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:17:13,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-05-22 00:17:13,515 INFO L430 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:17:13,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:17:13,515 INFO L82 PathProgramCache]: Analyzing trace with hash 533200735, now seen corresponding path program 1 times [2021-05-22 00:17:13,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:17:13,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542424227] [2021-05-22 00:17:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:17:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:17:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:17:13,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:17:13,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542424227] [2021-05-22 00:17:13,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542424227] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:17:13,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682253075] [2021-05-22 00:17:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:17:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:17:13,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-22 00:17:13,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:17:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:17:14,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682253075] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:17:14,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:17:14,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-05-22 00:17:14,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961152813] [2021-05-22 00:17:14,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-22 00:17:14,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:17:14,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-22 00:17:14,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2021-05-22 00:17:14,528 INFO L87 Difference]: Start difference. First operand 110160 states and 521630 transitions. Second operand has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 28 states have internal predecessors, (134), 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) [2021-05-22 00:17:16,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:17:16,525 INFO L93 Difference]: Finished difference Result 208656 states and 958766 transitions. [2021-05-22 00:17:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-22 00:17:16,525 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 28 states have internal predecessors, (134), 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 76 [2021-05-22 00:17:16,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:17:17,166 INFO L225 Difference]: With dead ends: 208656 [2021-05-22 00:17:17,166 INFO L226 Difference]: Without dead ends: 163626 [2021-05-22 00:17:17,166 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 360.8ms TimeCoverageRelationStatistics Valid=361, Invalid=1619, Unknown=0, NotChecked=0, Total=1980 [2021-05-22 00:17:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163626 states. [2021-05-22 00:17:21,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163626 to 114986. [2021-05-22 00:17:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114986 states, 114984 states have (on average 4.568539970778543) internal successors, (525309), 114985 states have internal predecessors, (525309), 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) [2021-05-22 00:17:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114986 states to 114986 states and 525309 transitions. [2021-05-22 00:17:21,833 INFO L78 Accepts]: Start accepts. Automaton has 114986 states and 525309 transitions. Word has length 76 [2021-05-22 00:17:21,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:17:21,833 INFO L482 AbstractCegarLoop]: Abstraction has 114986 states and 525309 transitions. [2021-05-22 00:17:21,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 28 states have internal predecessors, (134), 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) [2021-05-22 00:17:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 114986 states and 525309 transitions. [2021-05-22 00:17:21,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-22 00:17:21,881 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:17:21,881 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:17:22,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-05-22 00:17:22,082 INFO L430 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:17:22,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:17:22,082 INFO L82 PathProgramCache]: Analyzing trace with hash 806169103, now seen corresponding path program 1 times [2021-05-22 00:17:22,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:17:22,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172335826] [2021-05-22 00:17:22,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:17:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:17:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:17:22,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:17:22,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172335826] [2021-05-22 00:17:22,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172335826] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:17:22,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94173595] [2021-05-22 00:17:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:17:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:17:22,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-22 00:17:22,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:17:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:17:23,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94173595] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:17:23,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:17:23,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-05-22 00:17:23,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885727231] [2021-05-22 00:17:23,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-22 00:17:23,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:17:23,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-22 00:17:23,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2021-05-22 00:17:23,075 INFO L87 Difference]: Start difference. First operand 114986 states and 525309 transitions. Second operand has 32 states, 32 states have (on average 4.4375) internal successors, (142), 32 states have internal predecessors, (142), 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) [2021-05-22 00:17:26,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:17:26,192 INFO L93 Difference]: Finished difference Result 275504 states and 1225368 transitions. [2021-05-22 00:17:26,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-22 00:17:26,205 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.4375) internal successors, (142), 32 states have internal predecessors, (142), 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 80 [2021-05-22 00:17:26,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:17:27,314 INFO L225 Difference]: With dead ends: 275504 [2021-05-22 00:17:27,315 INFO L226 Difference]: Without dead ends: 259100 [2021-05-22 00:17:27,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 550.5ms TimeCoverageRelationStatistics Valid=622, Invalid=2800, Unknown=0, NotChecked=0, Total=3422 [2021-05-22 00:17:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259100 states. [2021-05-22 00:17:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259100 to 127186. [2021-05-22 00:17:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127186 states, 127184 states have (on average 4.582203736319034) internal successors, (582783), 127185 states have internal predecessors, (582783), 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) [2021-05-22 00:17:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127186 states to 127186 states and 582783 transitions. [2021-05-22 00:17:33,717 INFO L78 Accepts]: Start accepts. Automaton has 127186 states and 582783 transitions. Word has length 80 [2021-05-22 00:17:33,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:17:33,717 INFO L482 AbstractCegarLoop]: Abstraction has 127186 states and 582783 transitions. [2021-05-22 00:17:33,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.4375) internal successors, (142), 32 states have internal predecessors, (142), 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) [2021-05-22 00:17:33,717 INFO L276 IsEmpty]: Start isEmpty. Operand 127186 states and 582783 transitions. [2021-05-22 00:17:33,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-22 00:17:33,780 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:17:33,780 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:17:33,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:17:33,985 INFO L430 AbstractCegarLoop]: === Iteration 20 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:17:33,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:17:33,985 INFO L82 PathProgramCache]: Analyzing trace with hash 786726957, now seen corresponding path program 2 times [2021-05-22 00:17:33,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:17:33,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056109753] [2021-05-22 00:17:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:17:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:17:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:17:34,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:17:34,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056109753] [2021-05-22 00:17:34,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056109753] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:17:34,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511785219] [2021-05-22 00:17:34,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:17:34,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:17:34,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:17:34,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:17:34,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:17:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-22 00:17:34,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511785219] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:17:34,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:17:34,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2021-05-22 00:17:34,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032250867] [2021-05-22 00:17:34,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:17:34,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:17:34,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:17:34,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2021-05-22 00:17:34,405 INFO L87 Difference]: Start difference. First operand 127186 states and 582783 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:17:37,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:17:37,068 INFO L93 Difference]: Finished difference Result 270214 states and 1196971 transitions. [2021-05-22 00:17:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:17:37,068 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-05-22 00:17:37,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:17:39,094 INFO L225 Difference]: With dead ends: 270214 [2021-05-22 00:17:39,094 INFO L226 Difference]: Without dead ends: 251708 [2021-05-22 00:17:39,095 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 426.8ms TimeCoverageRelationStatistics Valid=250, Invalid=1390, Unknown=0, NotChecked=0, Total=1640 [2021-05-22 00:17:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251708 states. [2021-05-22 00:17:44,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251708 to 123196. [2021-05-22 00:17:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123196 states, 123194 states have (on average 4.593973732486972) internal successors, (565950), 123195 states have internal predecessors, (565950), 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) [2021-05-22 00:17:46,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123196 states to 123196 states and 565950 transitions. [2021-05-22 00:17:46,238 INFO L78 Accepts]: Start accepts. Automaton has 123196 states and 565950 transitions. Word has length 80 [2021-05-22 00:17:46,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:17:46,238 INFO L482 AbstractCegarLoop]: Abstraction has 123196 states and 565950 transitions. [2021-05-22 00:17:46,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:17:46,238 INFO L276 IsEmpty]: Start isEmpty. Operand 123196 states and 565950 transitions. [2021-05-22 00:17:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-22 00:17:46,351 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:17:46,351 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:17:46,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-05-22 00:17:46,552 INFO L430 AbstractCegarLoop]: === Iteration 21 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:17:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:17:46,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1394896383, now seen corresponding path program 3 times [2021-05-22 00:17:46,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:17:46,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7673825] [2021-05-22 00:17:46,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:17:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:17:46,663 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:17:46,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:17:46,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7673825] [2021-05-22 00:17:46,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7673825] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:17:46,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709454462] [2021-05-22 00:17:46,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:17:46,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-22 00:17:46,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:17:46,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:17:46,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:17:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-05-22 00:17:46,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709454462] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:17:46,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:17:46,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2021-05-22 00:17:46,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954443563] [2021-05-22 00:17:46,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-22 00:17:46,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:17:46,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-22 00:17:46,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-05-22 00:17:46,968 INFO L87 Difference]: Start difference. First operand 123196 states and 565950 transitions. Second operand has 27 states, 27 states have (on average 4.592592592592593) internal successors, (124), 27 states have internal predecessors, (124), 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) [2021-05-22 00:17:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:17:52,263 INFO L93 Difference]: Finished difference Result 418170 states and 1829061 transitions. [2021-05-22 00:17:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-22 00:17:52,265 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.592592592592593) internal successors, (124), 27 states have internal predecessors, (124), 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 80 [2021-05-22 00:17:52,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:17:54,369 INFO L225 Difference]: With dead ends: 418170 [2021-05-22 00:17:54,369 INFO L226 Difference]: Without dead ends: 376486 [2021-05-22 00:17:54,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2042 ImplicationChecksByTransitivity, 1662.9ms TimeCoverageRelationStatistics Valid=1263, Invalid=5877, Unknown=0, NotChecked=0, Total=7140 [2021-05-22 00:17:56,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376486 states. [2021-05-22 00:18:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376486 to 106988. [2021-05-22 00:18:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106988 states, 106986 states have (on average 4.5472491727889635) internal successors, (486492), 106987 states have internal predecessors, (486492), 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) [2021-05-22 00:18:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106988 states to 106988 states and 486492 transitions. [2021-05-22 00:18:01,359 INFO L78 Accepts]: Start accepts. Automaton has 106988 states and 486492 transitions. Word has length 80 [2021-05-22 00:18:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:18:01,359 INFO L482 AbstractCegarLoop]: Abstraction has 106988 states and 486492 transitions. [2021-05-22 00:18:01,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.592592592592593) internal successors, (124), 27 states have internal predecessors, (124), 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) [2021-05-22 00:18:01,360 INFO L276 IsEmpty]: Start isEmpty. Operand 106988 states and 486492 transitions. [2021-05-22 00:18:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-22 00:18:01,415 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:18:01,416 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:18:01,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:18:01,629 INFO L430 AbstractCegarLoop]: === Iteration 22 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:18:01,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:18:01,629 INFO L82 PathProgramCache]: Analyzing trace with hash -746108443, now seen corresponding path program 1 times [2021-05-22 00:18:01,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:18:01,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940611682] [2021-05-22 00:18:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:18:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:18:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:18:01,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:18:01,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940611682] [2021-05-22 00:18:01,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940611682] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:01,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708171623] [2021-05-22 00:18:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:18:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:18:01,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-22 00:18:01,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:18:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:18:02,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708171623] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:02,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:18:02,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-05-22 00:18:02,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782438103] [2021-05-22 00:18:02,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-22 00:18:02,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:18:02,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-22 00:18:02,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2021-05-22 00:18:02,100 INFO L87 Difference]: Start difference. First operand 106988 states and 486492 transitions. Second operand has 32 states, 32 states have (on average 4.4375) internal successors, (142), 32 states have internal predecessors, (142), 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) [2021-05-22 00:18:03,752 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-05-22 00:18:07,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:18:07,356 INFO L93 Difference]: Finished difference Result 326520 states and 1426708 transitions. [2021-05-22 00:18:07,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-22 00:18:07,358 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.4375) internal successors, (142), 32 states have internal predecessors, (142), 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 80 [2021-05-22 00:18:07,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:18:08,564 INFO L225 Difference]: With dead ends: 326520 [2021-05-22 00:18:08,564 INFO L226 Difference]: Without dead ends: 294244 [2021-05-22 00:18:08,564 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3871 ImplicationChecksByTransitivity, 1806.5ms TimeCoverageRelationStatistics Valid=1952, Invalid=10480, Unknown=0, NotChecked=0, Total=12432 [2021-05-22 00:18:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294244 states. [2021-05-22 00:18:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294244 to 123160. [2021-05-22 00:18:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123160 states, 123158 states have (on average 4.529823478783351) internal successors, (557884), 123159 states have internal predecessors, (557884), 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) [2021-05-22 00:18:14,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123160 states to 123160 states and 557884 transitions. [2021-05-22 00:18:14,884 INFO L78 Accepts]: Start accepts. Automaton has 123160 states and 557884 transitions. Word has length 80 [2021-05-22 00:18:14,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:18:14,884 INFO L482 AbstractCegarLoop]: Abstraction has 123160 states and 557884 transitions. [2021-05-22 00:18:14,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.4375) internal successors, (142), 32 states have internal predecessors, (142), 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) [2021-05-22 00:18:14,884 INFO L276 IsEmpty]: Start isEmpty. Operand 123160 states and 557884 transitions. [2021-05-22 00:18:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-22 00:18:14,942 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:18:14,942 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:18:15,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-22 00:18:15,143 INFO L430 AbstractCegarLoop]: === Iteration 23 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:18:15,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:18:15,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1545331133, now seen corresponding path program 2 times [2021-05-22 00:18:15,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:18:15,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797475507] [2021-05-22 00:18:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:18:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:18:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:18:15,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:18:15,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797475507] [2021-05-22 00:18:15,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797475507] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:15,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824224437] [2021-05-22 00:18:15,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:18:15,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:18:15,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:18:15,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:18:15,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:18:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-05-22 00:18:15,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824224437] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:15,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:18:15,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2021-05-22 00:18:15,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999853765] [2021-05-22 00:18:15,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-22 00:18:15,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:18:15,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-22 00:18:15,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2021-05-22 00:18:15,571 INFO L87 Difference]: Start difference. First operand 123160 states and 557884 transitions. Second operand has 27 states, 27 states have (on average 4.814814814814815) internal successors, (130), 27 states have internal predecessors, (130), 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) [2021-05-22 00:18:16,309 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 18 [2021-05-22 00:18:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:18:19,951 INFO L93 Difference]: Finished difference Result 299276 states and 1306964 transitions. [2021-05-22 00:18:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-22 00:18:19,959 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.814814814814815) internal successors, (130), 27 states have internal predecessors, (130), 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 80 [2021-05-22 00:18:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:18:21,045 INFO L225 Difference]: With dead ends: 299276 [2021-05-22 00:18:21,045 INFO L226 Difference]: Without dead ends: 275008 [2021-05-22 00:18:21,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 1885.1ms TimeCoverageRelationStatistics Valid=1043, Invalid=4963, Unknown=0, NotChecked=0, Total=6006 [2021-05-22 00:18:22,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275008 states. [2021-05-22 00:18:26,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275008 to 116224. [2021-05-22 00:18:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116224 states, 116222 states have (on average 4.519385314312265) internal successors, (525252), 116223 states have internal predecessors, (525252), 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) [2021-05-22 00:18:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116224 states to 116224 states and 525252 transitions. [2021-05-22 00:18:27,138 INFO L78 Accepts]: Start accepts. Automaton has 116224 states and 525252 transitions. Word has length 80 [2021-05-22 00:18:27,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:18:27,139 INFO L482 AbstractCegarLoop]: Abstraction has 116224 states and 525252 transitions. [2021-05-22 00:18:27,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.814814814814815) internal successors, (130), 27 states have internal predecessors, (130), 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) [2021-05-22 00:18:27,139 INFO L276 IsEmpty]: Start isEmpty. Operand 116224 states and 525252 transitions. [2021-05-22 00:18:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-22 00:18:27,200 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:18:27,200 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:18:27,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2021-05-22 00:18:27,401 INFO L430 AbstractCegarLoop]: === Iteration 24 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:18:27,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:18:27,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1161814947, now seen corresponding path program 3 times [2021-05-22 00:18:27,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:18:27,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271763903] [2021-05-22 00:18:27,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:18:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:18:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:18:27,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:18:27,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271763903] [2021-05-22 00:18:27,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271763903] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:27,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217389499] [2021-05-22 00:18:27,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:18:27,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-05-22 00:18:27,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:18:27,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:18:27,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:18:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-22 00:18:27,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217389499] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:18:27,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:18:27,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2021-05-22 00:18:27,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362866579] [2021-05-22 00:18:27,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:18:27,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:18:27,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:18:27,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2021-05-22 00:18:27,891 INFO L87 Difference]: Start difference. First operand 116224 states and 525252 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:18:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:18:30,164 INFO L93 Difference]: Finished difference Result 227936 states and 993260 transitions. [2021-05-22 00:18:30,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:18:30,181 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-05-22 00:18:30,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:18:31,068 INFO L225 Difference]: With dead ends: 227936 [2021-05-22 00:18:31,068 INFO L226 Difference]: Without dead ends: 209430 [2021-05-22 00:18:31,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 413.5ms TimeCoverageRelationStatistics Valid=250, Invalid=1390, Unknown=0, NotChecked=0, Total=1640 [2021-05-22 00:18:32,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209430 states. [2021-05-22 00:18:35,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209430 to 107066. [2021-05-22 00:18:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107066 states, 107064 states have (on average 4.499280804005081) internal successors, (481711), 107065 states have internal predecessors, (481711), 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) [2021-05-22 00:18:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107066 states to 107066 states and 481711 transitions. [2021-05-22 00:18:36,059 INFO L78 Accepts]: Start accepts. Automaton has 107066 states and 481711 transitions. Word has length 80 [2021-05-22 00:18:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:18:36,060 INFO L482 AbstractCegarLoop]: Abstraction has 107066 states and 481711 transitions. [2021-05-22 00:18:36,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:18:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 107066 states and 481711 transitions. [2021-05-22 00:18:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-22 00:18:36,111 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:18:36,112 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:18:36,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-05-22 00:18:36,321 INFO L430 AbstractCegarLoop]: === Iteration 25 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:18:36,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:18:36,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1130034207, now seen corresponding path program 1 times [2021-05-22 00:18:36,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:18:36,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241787280] [2021-05-22 00:18:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:18:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:18:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:18:36,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:18:36,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241787280] [2021-05-22 00:18:36,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241787280] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:36,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515662386] [2021-05-22 00:18:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:18:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:18:36,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-22 00:18:36,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:18:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:18:36,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515662386] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:36,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:18:36,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-05-22 00:18:36,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45110076] [2021-05-22 00:18:36,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-22 00:18:36,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:18:36,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-22 00:18:36,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2021-05-22 00:18:36,750 INFO L87 Difference]: Start difference. First operand 107066 states and 481711 transitions. Second operand has 32 states, 32 states have (on average 4.4375) internal successors, (142), 32 states have internal predecessors, (142), 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) [2021-05-22 00:18:41,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:18:41,365 INFO L93 Difference]: Finished difference Result 311594 states and 1339091 transitions. [2021-05-22 00:18:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-22 00:18:41,366 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.4375) internal successors, (142), 32 states have internal predecessors, (142), 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 80 [2021-05-22 00:18:41,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:18:42,353 INFO L225 Difference]: With dead ends: 311594 [2021-05-22 00:18:42,353 INFO L226 Difference]: Without dead ends: 265842 [2021-05-22 00:18:42,354 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3334 ImplicationChecksByTransitivity, 1105.6ms TimeCoverageRelationStatistics Valid=1495, Invalid=8605, Unknown=0, NotChecked=0, Total=10100 [2021-05-22 00:18:43,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265842 states. [2021-05-22 00:18:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265842 to 113682. [2021-05-22 00:18:47,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113682 states, 113680 states have (on average 4.47780612244898) internal successors, (509037), 113681 states have internal predecessors, (509037), 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) [2021-05-22 00:18:48,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113682 states to 113682 states and 509037 transitions. [2021-05-22 00:18:48,317 INFO L78 Accepts]: Start accepts. Automaton has 113682 states and 509037 transitions. Word has length 80 [2021-05-22 00:18:48,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:18:48,318 INFO L482 AbstractCegarLoop]: Abstraction has 113682 states and 509037 transitions. [2021-05-22 00:18:48,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.4375) internal successors, (142), 32 states have internal predecessors, (142), 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) [2021-05-22 00:18:48,319 INFO L276 IsEmpty]: Start isEmpty. Operand 113682 states and 509037 transitions. [2021-05-22 00:18:48,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-22 00:18:48,381 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:18:48,381 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:18:48,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2021-05-22 00:18:48,600 INFO L430 AbstractCegarLoop]: === Iteration 26 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:18:48,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:18:48,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1816239807, now seen corresponding path program 2 times [2021-05-22 00:18:48,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:18:48,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069556868] [2021-05-22 00:18:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:18:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:18:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:18:48,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:18:48,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069556868] [2021-05-22 00:18:48,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069556868] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:48,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539534689] [2021-05-22 00:18:48,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:18:48,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:18:48,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:18:48,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:18:48,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:18:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-22 00:18:49,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539534689] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:18:49,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:18:49,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2021-05-22 00:18:49,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860284417] [2021-05-22 00:18:49,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:18:49,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:18:49,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:18:49,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2021-05-22 00:18:49,117 INFO L87 Difference]: Start difference. First operand 113682 states and 509037 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:18:51,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:18:51,003 INFO L93 Difference]: Finished difference Result 217122 states and 935349 transitions. [2021-05-22 00:18:51,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:18:51,004 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-05-22 00:18:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:18:52,534 INFO L225 Difference]: With dead ends: 217122 [2021-05-22 00:18:52,534 INFO L226 Difference]: Without dead ends: 198616 [2021-05-22 00:18:52,534 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 436.8ms TimeCoverageRelationStatistics Valid=250, Invalid=1390, Unknown=0, NotChecked=0, Total=1640 [2021-05-22 00:18:53,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198616 states. [2021-05-22 00:18:57,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198616 to 104296. [2021-05-22 00:18:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104296 states, 104294 states have (on average 4.438644600839933) internal successors, (462924), 104295 states have internal predecessors, (462924), 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) [2021-05-22 00:18:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104296 states to 104296 states and 462924 transitions. [2021-05-22 00:18:57,581 INFO L78 Accepts]: Start accepts. Automaton has 104296 states and 462924 transitions. Word has length 80 [2021-05-22 00:18:57,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:18:57,582 INFO L482 AbstractCegarLoop]: Abstraction has 104296 states and 462924 transitions. [2021-05-22 00:18:57,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:18:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 104296 states and 462924 transitions. [2021-05-22 00:18:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-05-22 00:18:57,701 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:18:57,701 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:18:57,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:18:57,914 INFO L430 AbstractCegarLoop]: === Iteration 27 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:18:57,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:18:57,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1461348663, now seen corresponding path program 1 times [2021-05-22 00:18:57,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:18:57,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854005815] [2021-05-22 00:18:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:18:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:18:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:18:58,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:18:58,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854005815] [2021-05-22 00:18:58,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854005815] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:58,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832229973] [2021-05-22 00:18:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:18:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:18:58,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-22 00:18:58,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2021-05-22 00:18:59,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-05-22 00:18:59,010 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 00:18:59,010 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (1/2) [2021-05-22 00:18:59,010 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-22 00:18:59,011 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:18:59,011 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:18:59,011 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:18:59,011 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:18:59,011 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:18:59,011 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:18:59,011 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:18:59,011 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:18:59,011 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 132 places, 120 transitions, 304 flow [2021-05-22 00:18:59,012 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 00:18:59,012 INFO L315 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (2/2) [2021-05-22 00:18:59,012 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 4 thread instances [2021-05-22 00:18:59,013 WARN L196 ceAbstractionStarter]: Timeout [2021-05-22 00:18:59,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.05 12:18:59 BasicIcfg [2021-05-22 00:18:59,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-22 00:18:59,014 INFO L168 Benchmark]: Toolchain (without parser) took 669893.68 ms. Allocated memory was 346.0 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 309.6 MB in the beginning and 12.6 GB in the end (delta: -12.3 GB). Peak memory consumption was 3.4 GB. Max. memory is 16.0 GB. [2021-05-22 00:18:59,014 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 346.0 MB. Free memory was 327.4 MB in the beginning and 327.3 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 00:18:59,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.65 ms. Allocated memory is still 346.0 MB. Free memory was 309.4 MB in the beginning and 310.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.0 GB. [2021-05-22 00:18:59,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.54 ms. Allocated memory is still 346.0 MB. Free memory was 310.5 MB in the beginning and 308.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 00:18:59,014 INFO L168 Benchmark]: Boogie Preprocessor took 13.47 ms. Allocated memory is still 346.0 MB. Free memory was 308.4 MB in the beginning and 307.4 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 00:18:59,014 INFO L168 Benchmark]: RCFGBuilder took 318.82 ms. Allocated memory is still 346.0 MB. Free memory was 307.4 MB in the beginning and 285.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-05-22 00:18:59,015 INFO L168 Benchmark]: TraceAbstraction took 669232.33 ms. Allocated memory was 346.0 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 284.3 MB in the beginning and 12.6 GB in the end (delta: -12.3 GB). Peak memory consumption was 3.3 GB. Max. memory is 16.0 GB. [2021-05-22 00:18:59,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 346.0 MB. Free memory was 327.4 MB in the beginning and 327.3 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 298.65 ms. Allocated memory is still 346.0 MB. Free memory was 309.4 MB in the beginning and 310.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.54 ms. Allocated memory is still 346.0 MB. Free memory was 310.5 MB in the beginning and 308.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.47 ms. Allocated memory is still 346.0 MB. Free memory was 308.4 MB in the beginning and 307.4 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 318.82 ms. Allocated memory is still 346.0 MB. Free memory was 307.4 MB in the beginning and 285.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 669232.33 ms. Allocated memory was 346.0 MB in the beginning and 16.0 GB in the end (delta: 15.7 GB). Free memory was 284.3 MB in the beginning and 12.6 GB in the end (delta: -12.3 GB). Peak memory consumption was 3.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 689]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 85 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1065.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 16.2ms, AutomataDifference: 390.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 47.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 205 SDtfs, 599 SDslu, 714 SDs, 0 SdLazy, 174 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 307.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1329occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 49.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.3ms SsaConstructionTime, 73.8ms SatisfiabilityAnalysisTime, 380.1ms InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 100 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4849.6ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 24.0ms, AutomataDifference: 1847.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 208.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 687 SDtfs, 2316 SDslu, 4440 SDs, 0 SdLazy, 1218 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 445.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 296 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 1673.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8109occurred in iteration=0, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 299.4ms AutomataMinimizationTime, 5 MinimizatonAttempts, 1858 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 42.6ms SsaConstructionTime, 95.0ms SatisfiabilityAnalysisTime, 1492.6ms InterpolantComputationTime, 432 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 2543 SizeOfPredicates, 26 NumberOfNonLiveVariables, 417 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 6/30 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 9 procedures, 116 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 33803.6ms, OverallIterations: 16, TraceHistogramMax: 3, EmptinessCheckTime: 169.3ms, AutomataDifference: 13871.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4787.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3486 SDtfs, 13197 SDslu, 33357 SDs, 0 SdLazy, 9959 SolverSat, 397 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3429.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1375 GetRequests, 705 SyntacticMatches, 1 SemanticMatches, 669 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10244 ImplicationChecksByTransitivity, 8740.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48789occurred in iteration=0, InterpolantAutomatonStates: 433, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6343.6ms AutomataMinimizationTime, 16 MinimizatonAttempts, 135144 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 245.8ms SsaConstructionTime, 252.1ms SatisfiabilityAnalysisTime, 5025.5ms InterpolantComputationTime, 1864 NumberOfCodeBlocks, 1796 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1836 ConstructedInterpolants, 0 QuantifiedInterpolants, 10518 SizeOfPredicates, 122 NumberOfNonLiveVariables, 1855 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 164/430 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 - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 11 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 620514.6ms, OverallIterations: 27, TraceHistogramMax: 4, EmptinessCheckTime: 1232.3ms, AutomataDifference: 156164.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 227767.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8219 SDtfs, 26166 SDslu, 77478 SDs, 0 SdLazy, 26451 SolverSat, 888 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10070.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2615 GetRequests, 1261 SyntacticMatches, 1 SemanticMatches, 1353 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25678 ImplicationChecksByTransitivity, 20737.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=292869occurred in iteration=0, InterpolantAutomatonStates: 952, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 217181.8ms AutomataMinimizationTime, 26 MinimizatonAttempts, 5215024 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 788.5ms SsaConstructionTime, 1012.9ms SatisfiabilityAnalysisTime, 9952.6ms InterpolantComputationTime, 3288 NumberOfCodeBlocks, 3118 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 3242 ConstructedInterpolants, 0 QuantifiedInterpolants, 18212 SizeOfPredicates, 208 NumberOfNonLiveVariables, 3150 ConjunctsInSsa, 272 ConjunctsInUnsatCore, 46 InterpolantComputations, 13 PerfectInterpolantSequences, 575/1240 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 84 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 133.8ms, OverallIterations: 1, TraceHistogramMax: 2, EmptinessCheckTime: 9.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 27.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1329occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.6ms SsaConstructionTime, 21.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 7 procedures, 100 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 258.2ms, OverallIterations: 1, TraceHistogramMax: 3, EmptinessCheckTime: 19.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 193.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8109occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 12.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 3 thread instances CFG has 9 procedures, 116 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8432.5ms, OverallIterations: 1, TraceHistogramMax: 4, EmptinessCheckTime: 97.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8313.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48789occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8ms SsaConstructionTime, 4.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 4 thread instances CFG has 11 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 1.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown