/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-344d29da17dfcedfb91d6006a5dbd12b556a868d-344d29d [2021-02-16 17:28:32,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-16 17:28:32,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-16 17:28:32,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-16 17:28:32,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-16 17:28:32,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-16 17:28:32,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-16 17:28:32,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-16 17:28:32,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-16 17:28:32,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-16 17:28:32,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-16 17:28:32,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-16 17:28:32,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-16 17:28:32,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-16 17:28:32,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-16 17:28:32,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-16 17:28:32,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-16 17:28:32,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-16 17:28:32,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-16 17:28:32,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-16 17:28:32,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-16 17:28:32,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-16 17:28:32,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-16 17:28:32,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-16 17:28:32,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-16 17:28:32,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-16 17:28:32,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-16 17:28:32,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-16 17:28:32,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-02-16 17:28:32,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-16 17:28:32,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-16 17:28:32,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-16 17:28:32,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-16 17:28:32,658 INFO L138 SettingsManager]: * Use SBE=true [2021-02-16 17:28:32,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-16 17:28:32,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-16 17:28:32,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-16 17:28:32,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-16 17:28:32,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-16 17:28:32,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-16 17:28:32,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-16 17:28:32,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-16 17:28:32,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-16 17:28:32,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-16 17:28:32,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-16 17:28:32,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-16 17:28:32,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-16 17:28:32,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-16 17:28:32,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-16 17:28:32,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-16 17:28:32,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-16 17:28:32,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-16 17:28:32,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-16 17:28:32,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-16 17:28:32,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-16 17:28:32,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-16 17:28:32,665 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-16 17:28:32,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-16 17:28:32,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-16 17:28:33,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-16 17:28:33,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-16 17:28:33,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-16 17:28:33,129 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-16 17:28:33,130 INFO L275 PluginConnector]: CDTParser initialized [2021-02-16 17:28:33,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2021-02-16 17:28:33,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f8e2a77d/fbaeeea13cad4bb58b40d0103d09d5c4/FLAG8fddae80a [2021-02-16 17:28:33,995 INFO L306 CDTParser]: Found 1 translation units. [2021-02-16 17:28:33,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2021-02-16 17:28:34,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f8e2a77d/fbaeeea13cad4bb58b40d0103d09d5c4/FLAG8fddae80a [2021-02-16 17:28:34,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f8e2a77d/fbaeeea13cad4bb58b40d0103d09d5c4 [2021-02-16 17:28:34,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-16 17:28:34,239 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-02-16 17:28:34,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-16 17:28:34,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-16 17:28:34,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-16 17:28:34,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 05:28:34" (1/1) ... [2021-02-16 17:28:34,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360f01fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34, skipping insertion in model container [2021-02-16 17:28:34,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 05:28:34" (1/1) ... [2021-02-16 17:28:34,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-16 17:28:34,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-16 17:28:34,595 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i[949,962] [2021-02-16 17:28:34,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-16 17:28:34,791 INFO L203 MainTranslator]: Completed pre-run [2021-02-16 17:28:34,805 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i[949,962] [2021-02-16 17:28:34,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-16 17:28:34,940 INFO L208 MainTranslator]: Completed translation [2021-02-16 17:28:34,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34 WrapperNode [2021-02-16 17:28:34,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-16 17:28:34,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-16 17:28:34,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-16 17:28:34,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-16 17:28:34,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34" (1/1) ... [2021-02-16 17:28:34,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34" (1/1) ... [2021-02-16 17:28:35,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-16 17:28:35,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-16 17:28:35,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-16 17:28:35,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-16 17:28:35,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34" (1/1) ... [2021-02-16 17:28:35,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34" (1/1) ... [2021-02-16 17:28:35,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34" (1/1) ... [2021-02-16 17:28:35,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34" (1/1) ... [2021-02-16 17:28:35,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34" (1/1) ... [2021-02-16 17:28:35,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34" (1/1) ... [2021-02-16 17:28:35,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34" (1/1) ... [2021-02-16 17:28:35,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-16 17:28:35,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-16 17:28:35,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-16 17:28:35,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-16 17:28:35,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-16 17:28:35,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-16 17:28:35,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-02-16 17:28:35,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-16 17:28:35,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-16 17:28:35,199 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-02-16 17:28:35,200 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-02-16 17:28:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-02-16 17:28:35,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-02-16 17:28:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-02-16 17:28:35,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-02-16 17:28:35,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-16 17:28:35,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-02-16 17:28:35,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-16 17:28:35,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-16 17:28:35,204 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-16 17:28:35,569 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-16 17:28:35,570 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-16 17:28:35,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 05:28:35 BoogieIcfgContainer [2021-02-16 17:28:35,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-16 17:28:35,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-16 17:28:35,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-16 17:28:35,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-16 17:28:35,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 05:28:34" (1/3) ... [2021-02-16 17:28:35,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4129120c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 05:28:35, skipping insertion in model container [2021-02-16 17:28:35,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 05:28:34" (2/3) ... [2021-02-16 17:28:35,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4129120c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 05:28:35, skipping insertion in model container [2021-02-16 17:28:35,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 05:28:35" (3/3) ... [2021-02-16 17:28:35,581 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2021-02-16 17:28:35,594 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-16 17:28:35,595 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-16 17:28:35,602 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-16 17:28:35,606 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-16 17:28:35,662 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,662 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,662 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,662 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,663 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,663 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,663 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,664 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,665 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,665 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,665 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,666 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,666 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,666 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,667 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,669 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,669 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,670 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,670 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,670 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,670 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,671 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,671 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,671 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,680 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,680 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,680 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,683 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,683 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,683 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-02-16 17:28:35,686 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-02-16 17:28:35,711 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-02-16 17:28:35,739 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-16 17:28:35,739 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-16 17:28:35,739 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-16 17:28:35,740 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-16 17:28:35,740 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-16 17:28:35,740 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-16 17:28:35,740 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-16 17:28:35,740 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-16 17:28:35,754 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-02-16 17:28:36,678 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:36,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:36,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-16 17:28:36,770 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:28:36,771 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:28:36,772 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:28:36,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:28:36,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1037275097, now seen corresponding path program 1 times [2021-02-16 17:28:36,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:28:36,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301999716] [2021-02-16 17:28:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:28:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:28:37,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:37,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:37,282 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:28:37,284 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:28:37,308 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:28:37,310 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:28:37,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:37,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:37,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:37,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:37,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:37,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:28:37,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301999716] [2021-02-16 17:28:37,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:28:37,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-16 17:28:37,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166069152] [2021-02-16 17:28:37,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-16 17:28:37,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:28:37,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-16 17:28:37,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-16 17:28:37,421 INFO L87 Difference]: Start difference. First operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:28:38,043 INFO L93 Difference]: Finished difference Result 19776 states and 68252 transitions. [2021-02-16 17:28:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-16 17:28:38,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-16 17:28:38,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:28:38,127 INFO L225 Difference]: With dead ends: 19776 [2021-02-16 17:28:38,127 INFO L226 Difference]: Without dead ends: 6498 [2021-02-16 17:28:38,129 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:28:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2021-02-16 17:28:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 5376. [2021-02-16 17:28:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5375 states have (on average 3.3869767441860463) internal successors, (18205), 5375 states have internal predecessors, (18205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:38,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 18205 transitions. [2021-02-16 17:28:38,729 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 18205 transitions. Word has length 40 [2021-02-16 17:28:38,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:28:38,730 INFO L480 AbstractCegarLoop]: Abstraction has 5376 states and 18205 transitions. [2021-02-16 17:28:38,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:38,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 18205 transitions. [2021-02-16 17:28:38,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-16 17:28:38,745 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:28:38,745 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:28:38,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-16 17:28:38,745 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:28:38,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:28:38,746 INFO L82 PathProgramCache]: Analyzing trace with hash 262261792, now seen corresponding path program 1 times [2021-02-16 17:28:38,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:28:38,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153157416] [2021-02-16 17:28:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:28:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:28:38,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:38,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:38,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:38,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:38,854 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:28:38,855 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:28:38,867 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:28:38,868 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:28:38,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:38,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:38,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:38,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:38,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:38,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:28:38,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153157416] [2021-02-16 17:28:38,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:28:38,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:28:38,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635898802] [2021-02-16 17:28:38,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:28:38,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:28:38,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:28:38,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:28:38,925 INFO L87 Difference]: Start difference. First operand 5376 states and 18205 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:28:39,295 INFO L93 Difference]: Finished difference Result 7160 states and 23840 transitions. [2021-02-16 17:28:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-16 17:28:39,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-02-16 17:28:39,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:28:39,353 INFO L225 Difference]: With dead ends: 7160 [2021-02-16 17:28:39,353 INFO L226 Difference]: Without dead ends: 5748 [2021-02-16 17:28:39,354 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-16 17:28:39,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2021-02-16 17:28:39,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 4676. [2021-02-16 17:28:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4676 states, 4675 states have (on average 3.3614973262032084) internal successors, (15715), 4675 states have internal predecessors, (15715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 15715 transitions. [2021-02-16 17:28:39,632 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 15715 transitions. Word has length 42 [2021-02-16 17:28:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:28:39,632 INFO L480 AbstractCegarLoop]: Abstraction has 4676 states and 15715 transitions. [2021-02-16 17:28:39,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:39,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 15715 transitions. [2021-02-16 17:28:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-16 17:28:39,647 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:28:39,647 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:28:39,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-16 17:28:39,648 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:28:39,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:28:39,648 INFO L82 PathProgramCache]: Analyzing trace with hash -231343092, now seen corresponding path program 1 times [2021-02-16 17:28:39,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:28:39,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020518304] [2021-02-16 17:28:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:28:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:28:39,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:39,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:39,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:39,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:39,774 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:28:39,775 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:28:39,796 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:28:39,801 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:28:39,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:39,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:39,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:39,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:39,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:39,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:28:39,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020518304] [2021-02-16 17:28:39,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:28:39,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:28:39,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827431755] [2021-02-16 17:28:39,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:28:39,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:28:39,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:28:39,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:28:39,865 INFO L87 Difference]: Start difference. First operand 4676 states and 15715 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:40,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:28:40,237 INFO L93 Difference]: Finished difference Result 6324 states and 20919 transitions. [2021-02-16 17:28:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-16 17:28:40,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-02-16 17:28:40,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:28:40,294 INFO L225 Difference]: With dead ends: 6324 [2021-02-16 17:28:40,294 INFO L226 Difference]: Without dead ends: 5220 [2021-02-16 17:28:40,294 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-16 17:28:40,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5220 states. [2021-02-16 17:28:40,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5220 to 4052. [2021-02-16 17:28:40,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4052 states, 4051 states have (on average 3.354974080473957) internal successors, (13591), 4051 states have internal predecessors, (13591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4052 states to 4052 states and 13591 transitions. [2021-02-16 17:28:40,581 INFO L78 Accepts]: Start accepts. Automaton has 4052 states and 13591 transitions. Word has length 43 [2021-02-16 17:28:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:28:40,582 INFO L480 AbstractCegarLoop]: Abstraction has 4052 states and 13591 transitions. [2021-02-16 17:28:40,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4052 states and 13591 transitions. [2021-02-16 17:28:40,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-16 17:28:40,595 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:28:40,595 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:28:40,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-16 17:28:40,596 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:28:40,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:28:40,596 INFO L82 PathProgramCache]: Analyzing trace with hash 590403169, now seen corresponding path program 1 times [2021-02-16 17:28:40,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:28:40,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570409418] [2021-02-16 17:28:40,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:28:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:28:40,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:40,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:40,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:40,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:40,664 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:28:40,665 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:28:40,683 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:28:40,686 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:28:40,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:40,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:40,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:40,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:40,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:40,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:28:40,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570409418] [2021-02-16 17:28:40,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:28:40,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:28:40,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647924677] [2021-02-16 17:28:40,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:28:40,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:28:40,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:28:40,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:28:40,737 INFO L87 Difference]: Start difference. First operand 4052 states and 13591 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:28:41,088 INFO L93 Difference]: Finished difference Result 5910 states and 19449 transitions. [2021-02-16 17:28:41,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-16 17:28:41,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-16 17:28:41,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:28:41,122 INFO L225 Difference]: With dead ends: 5910 [2021-02-16 17:28:41,122 INFO L226 Difference]: Without dead ends: 4890 [2021-02-16 17:28:41,123 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-16 17:28:41,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4890 states. [2021-02-16 17:28:41,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4890 to 3597. [2021-02-16 17:28:41,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3596 states have (on average 3.3264738598442714) internal successors, (11962), 3596 states have internal predecessors, (11962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 11962 transitions. [2021-02-16 17:28:41,297 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 11962 transitions. Word has length 44 [2021-02-16 17:28:41,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:28:41,297 INFO L480 AbstractCegarLoop]: Abstraction has 3597 states and 11962 transitions. [2021-02-16 17:28:41,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:41,297 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 11962 transitions. [2021-02-16 17:28:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-16 17:28:41,308 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:28:41,309 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:28:41,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-16 17:28:41,309 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:28:41,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:28:41,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1668805317, now seen corresponding path program 1 times [2021-02-16 17:28:41,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:28:41,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709336315] [2021-02-16 17:28:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:28:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:28:41,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:41,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:41,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:41,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:41,444 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-16 17:28:41,446 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-16 17:28:41,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:41,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-16 17:28:41,472 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-16 17:28:41,474 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-16 17:28:41,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:41,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:28:41,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709336315] [2021-02-16 17:28:41,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:28:41,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-16 17:28:41,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786256764] [2021-02-16 17:28:41,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-16 17:28:41,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:28:41,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-16 17:28:41,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-16 17:28:41,490 INFO L87 Difference]: Start difference. First operand 3597 states and 11962 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:41,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:28:41,698 INFO L93 Difference]: Finished difference Result 4660 states and 15241 transitions. [2021-02-16 17:28:41,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-16 17:28:41,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-02-16 17:28:41,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:28:41,715 INFO L225 Difference]: With dead ends: 4660 [2021-02-16 17:28:41,716 INFO L226 Difference]: Without dead ends: 3224 [2021-02-16 17:28:41,717 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:28:41,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2021-02-16 17:28:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 3224. [2021-02-16 17:28:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 3223 states have (on average 3.250077567483711) internal successors, (10475), 3223 states have internal predecessors, (10475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 10475 transitions. [2021-02-16 17:28:41,856 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 10475 transitions. Word has length 45 [2021-02-16 17:28:41,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:28:41,859 INFO L480 AbstractCegarLoop]: Abstraction has 3224 states and 10475 transitions. [2021-02-16 17:28:41,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:41,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 10475 transitions. [2021-02-16 17:28:41,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-16 17:28:41,870 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:28:41,871 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:28:41,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-16 17:28:41,871 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:28:41,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:28:41,872 INFO L82 PathProgramCache]: Analyzing trace with hash -104938334, now seen corresponding path program 1 times [2021-02-16 17:28:41,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:28:41,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360553385] [2021-02-16 17:28:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:28:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:28:41,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:41,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:41,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:41,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:41,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:41,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:41,960 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-16 17:28:41,961 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-16 17:28:41,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:41,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-16 17:28:42,001 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-16 17:28:42,002 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-16 17:28:42,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:42,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:28:42,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360553385] [2021-02-16 17:28:42,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:28:42,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:28:42,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812334760] [2021-02-16 17:28:42,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:28:42,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:28:42,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:28:42,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:28:42,028 INFO L87 Difference]: Start difference. First operand 3224 states and 10475 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:42,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:28:42,190 INFO L93 Difference]: Finished difference Result 3398 states and 10711 transitions. [2021-02-16 17:28:42,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-16 17:28:42,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-02-16 17:28:42,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:28:42,202 INFO L225 Difference]: With dead ends: 3398 [2021-02-16 17:28:42,202 INFO L226 Difference]: Without dead ends: 2222 [2021-02-16 17:28:42,203 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-02-16 17:28:42,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-02-16 17:28:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2222. [2021-02-16 17:28:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 3.0756416028815847) internal successors, (6831), 2221 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 6831 transitions. [2021-02-16 17:28:42,362 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 6831 transitions. Word has length 46 [2021-02-16 17:28:42,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:28:42,362 INFO L480 AbstractCegarLoop]: Abstraction has 2222 states and 6831 transitions. [2021-02-16 17:28:42,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:42,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 6831 transitions. [2021-02-16 17:28:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-16 17:28:42,370 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:28:42,370 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:28:42,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-16 17:28:42,371 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:28:42,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:28:42,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1268113607, now seen corresponding path program 1 times [2021-02-16 17:28:42,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:28:42,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874580623] [2021-02-16 17:28:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:28:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:28:42,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:42,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:42,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:42,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:42,507 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-16 17:28:42,509 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-16 17:28:42,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-16 17:28:42,543 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-16 17:28:42,544 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-16 17:28:42,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:42,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:28:42,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874580623] [2021-02-16 17:28:42,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:28:42,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-16 17:28:42,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357312925] [2021-02-16 17:28:42,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-16 17:28:42,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:28:42,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-16 17:28:42,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-16 17:28:42,564 INFO L87 Difference]: Start difference. First operand 2222 states and 6831 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:42,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:28:42,764 INFO L93 Difference]: Finished difference Result 1835 states and 5487 transitions. [2021-02-16 17:28:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-16 17:28:42,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-02-16 17:28:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:28:42,771 INFO L225 Difference]: With dead ends: 1835 [2021-02-16 17:28:42,771 INFO L226 Difference]: Without dead ends: 1163 [2021-02-16 17:28:42,772 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-16 17:28:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-02-16 17:28:42,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1131. [2021-02-16 17:28:42,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 2.8902654867256636) internal successors, (3266), 1130 states have internal predecessors, (3266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 3266 transitions. [2021-02-16 17:28:42,807 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 3266 transitions. Word has length 48 [2021-02-16 17:28:42,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:28:42,808 INFO L480 AbstractCegarLoop]: Abstraction has 1131 states and 3266 transitions. [2021-02-16 17:28:42,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 3266 transitions. [2021-02-16 17:28:42,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-16 17:28:42,812 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:28:42,812 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:28:42,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-16 17:28:42,813 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:28:42,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:28:42,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1533662001, now seen corresponding path program 1 times [2021-02-16 17:28:42,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:28:42,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561961326] [2021-02-16 17:28:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:28:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:28:42,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:42,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:42,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:42,913 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:28:42,914 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:28:42,926 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:28:42,928 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:28:42,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:42,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:42,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:42,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:28:42,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561961326] [2021-02-16 17:28:42,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:28:42,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-16 17:28:42,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127479135] [2021-02-16 17:28:42,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-16 17:28:42,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:28:42,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-16 17:28:42,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-16 17:28:42,989 INFO L87 Difference]: Start difference. First operand 1131 states and 3266 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:43,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:28:43,115 INFO L93 Difference]: Finished difference Result 1812 states and 5236 transitions. [2021-02-16 17:28:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-16 17:28:43,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-02-16 17:28:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:28:43,121 INFO L225 Difference]: With dead ends: 1812 [2021-02-16 17:28:43,122 INFO L226 Difference]: Without dead ends: 1161 [2021-02-16 17:28:43,122 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-02-16 17:28:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-02-16 17:28:43,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1011. [2021-02-16 17:28:43,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1010 states have (on average 2.8653465346534652) internal successors, (2894), 1010 states have internal predecessors, (2894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 2894 transitions. [2021-02-16 17:28:43,161 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 2894 transitions. Word has length 52 [2021-02-16 17:28:43,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:28:43,163 INFO L480 AbstractCegarLoop]: Abstraction has 1011 states and 2894 transitions. [2021-02-16 17:28:43,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:43,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 2894 transitions. [2021-02-16 17:28:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-16 17:28:43,168 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:28:43,168 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:28:43,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-16 17:28:43,168 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:28:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:28:43,169 INFO L82 PathProgramCache]: Analyzing trace with hash 319352817, now seen corresponding path program 2 times [2021-02-16 17:28:43,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:28:43,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963763593] [2021-02-16 17:28:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:28:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:28:43,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:43,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:43,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:43,283 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:28:43,284 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:28:43,297 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:28:43,298 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:28:43,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:43,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:43,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:28:43,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963763593] [2021-02-16 17:28:43,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:28:43,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-16 17:28:43,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341241600] [2021-02-16 17:28:43,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-16 17:28:43,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:28:43,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-16 17:28:43,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-16 17:28:43,364 INFO L87 Difference]: Start difference. First operand 1011 states and 2894 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:28:43,486 INFO L93 Difference]: Finished difference Result 1694 states and 4885 transitions. [2021-02-16 17:28:43,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-16 17:28:43,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-02-16 17:28:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:28:43,491 INFO L225 Difference]: With dead ends: 1694 [2021-02-16 17:28:43,491 INFO L226 Difference]: Without dead ends: 1037 [2021-02-16 17:28:43,491 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-02-16 17:28:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-02-16 17:28:43,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 957. [2021-02-16 17:28:43,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 2.842050209205021) internal successors, (2717), 956 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 2717 transitions. [2021-02-16 17:28:43,522 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 2717 transitions. Word has length 52 [2021-02-16 17:28:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:28:43,522 INFO L480 AbstractCegarLoop]: Abstraction has 957 states and 2717 transitions. [2021-02-16 17:28:43,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 2717 transitions. [2021-02-16 17:28:43,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-16 17:28:43,525 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:28:43,525 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:28:43,526 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-16 17:28:43,526 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:28:43,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:28:43,526 INFO L82 PathProgramCache]: Analyzing trace with hash 2091998059, now seen corresponding path program 3 times [2021-02-16 17:28:43,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:28:43,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647744120] [2021-02-16 17:28:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:28:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:28:43,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:43,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:43,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:43,581 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:28:43,582 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:28:43,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:43,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:43,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:28:43,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647744120] [2021-02-16 17:28:43,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:28:43,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:28:43,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710785066] [2021-02-16 17:28:43,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:28:43,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:28:43,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:28:43,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:28:43,633 INFO L87 Difference]: Start difference. First operand 957 states and 2717 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:28:43,721 INFO L93 Difference]: Finished difference Result 1400 states and 4016 transitions. [2021-02-16 17:28:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-16 17:28:43,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-02-16 17:28:43,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:28:43,725 INFO L225 Difference]: With dead ends: 1400 [2021-02-16 17:28:43,725 INFO L226 Difference]: Without dead ends: 817 [2021-02-16 17:28:43,725 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:28:43,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-02-16 17:28:43,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2021-02-16 17:28:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 2.7904411764705883) internal successors, (2277), 816 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 2277 transitions. [2021-02-16 17:28:43,750 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 2277 transitions. Word has length 52 [2021-02-16 17:28:43,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:28:43,750 INFO L480 AbstractCegarLoop]: Abstraction has 817 states and 2277 transitions. [2021-02-16 17:28:43,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 2277 transitions. [2021-02-16 17:28:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-16 17:28:43,753 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:28:43,753 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:28:43,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-16 17:28:43,753 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:28:43,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:28:43,754 INFO L82 PathProgramCache]: Analyzing trace with hash 899361369, now seen corresponding path program 4 times [2021-02-16 17:28:43,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:28:43,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807617602] [2021-02-16 17:28:43,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:28:43,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:28:43,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:43,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:43,798 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-02-16 17:28:43,799 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size 17 [2021-02-16 17:28:43,810 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:28:43,811 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:28:43,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:43,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:43,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:43,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:28:43,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807617602] [2021-02-16 17:28:43,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:28:43,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:28:43,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009578998] [2021-02-16 17:28:43,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:28:43,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:28:43,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:28:43,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:28:43,862 INFO L87 Difference]: Start difference. First operand 817 states and 2277 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:28:43,996 INFO L93 Difference]: Finished difference Result 1188 states and 3358 transitions. [2021-02-16 17:28:43,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-16 17:28:43,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-02-16 17:28:43,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:28:43,999 INFO L225 Difference]: With dead ends: 1188 [2021-02-16 17:28:44,000 INFO L226 Difference]: Without dead ends: 657 [2021-02-16 17:28:44,000 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:28:44,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-02-16 17:28:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2021-02-16 17:28:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.7271341463414633) internal successors, (1789), 656 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1789 transitions. [2021-02-16 17:28:44,021 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1789 transitions. Word has length 52 [2021-02-16 17:28:44,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:28:44,021 INFO L480 AbstractCegarLoop]: Abstraction has 657 states and 1789 transitions. [2021-02-16 17:28:44,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:44,021 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1789 transitions. [2021-02-16 17:28:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-16 17:28:44,024 INFO L497 BasicCegarLoop]: Found error trace [2021-02-16 17:28:44,024 INFO L505 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-16 17:28:44,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-16 17:28:44,024 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-16 17:28:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-16 17:28:44,025 INFO L82 PathProgramCache]: Analyzing trace with hash 103273049, now seen corresponding path program 5 times [2021-02-16 17:28:44,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-16 17:28:44,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591068603] [2021-02-16 17:28:44,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-16 17:28:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-16 17:28:44,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:44,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:44,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:44,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:44,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:44,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-16 17:28:44,076 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-16 17:28:44,077 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-16 17:28:44,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:44,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:44,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:44,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-16 17:28:44,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-16 17:28:44,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-16 17:28:44,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-16 17:28:44,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591068603] [2021-02-16 17:28:44,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-16 17:28:44,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-16 17:28:44,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162489097] [2021-02-16 17:28:44,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-16 17:28:44,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-16 17:28:44,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-16 17:28:44,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-16 17:28:44,144 INFO L87 Difference]: Start difference. First operand 657 states and 1789 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:44,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-16 17:28:44,223 INFO L93 Difference]: Finished difference Result 603 states and 1627 transitions. [2021-02-16 17:28:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-16 17:28:44,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-02-16 17:28:44,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-16 17:28:44,224 INFO L225 Difference]: With dead ends: 603 [2021-02-16 17:28:44,224 INFO L226 Difference]: Without dead ends: 0 [2021-02-16 17:28:44,224 INFO L761 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-16 17:28:44,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-16 17:28:44,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-16 17:28:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-16 17:28:44,225 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2021-02-16 17:28:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-16 17:28:44,225 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-16 17:28:44,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-16 17:28:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-16 17:28:44,226 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-16 17:28:44,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-16 17:28:44,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 05:28:44 BasicIcfg [2021-02-16 17:28:44,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-16 17:28:44,233 INFO L168 Benchmark]: Toolchain (without parser) took 10005.48 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 276.0 MB in the beginning and 1.2 GB in the end (delta: -909.3 MB). Peak memory consumption was 135.6 MB. Max. memory is 16.0 GB. [2021-02-16 17:28:44,233 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 271.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-02-16 17:28:44,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.27 ms. Allocated memory is still 302.0 MB. Free memory was 275.0 MB in the beginning and 244.1 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-02-16 17:28:44,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.82 ms. Allocated memory is still 302.0 MB. Free memory was 243.9 MB in the beginning and 284.3 MB in the end (delta: -40.4 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-02-16 17:28:44,234 INFO L168 Benchmark]: Boogie Preprocessor took 40.51 ms. Allocated memory is still 302.0 MB. Free memory was 284.3 MB in the beginning and 283.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-02-16 17:28:44,234 INFO L168 Benchmark]: RCFGBuilder took 508.84 ms. Allocated memory is still 302.0 MB. Free memory was 283.0 MB in the beginning and 260.2 MB in the end (delta: 22.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-02-16 17:28:44,235 INFO L168 Benchmark]: TraceAbstraction took 8657.58 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 259.1 MB in the beginning and 1.2 GB in the end (delta: -926.1 MB). Peak memory consumption was 120.3 MB. Max. memory is 16.0 GB. [2021-02-16 17:28:44,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 271.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 697.27 ms. Allocated memory is still 302.0 MB. Free memory was 275.0 MB in the beginning and 244.1 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 79.82 ms. Allocated memory is still 302.0 MB. Free memory was 243.9 MB in the beginning and 284.3 MB in the end (delta: -40.4 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 40.51 ms. Allocated memory is still 302.0 MB. Free memory was 284.3 MB in the beginning and 283.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 508.84 ms. Allocated memory is still 302.0 MB. Free memory was 283.0 MB in the beginning and 260.2 MB in the end (delta: 22.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8657.58 ms. Allocated memory was 302.0 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 259.1 MB in the beginning and 1.2 GB in the end (delta: -926.1 MB). Peak memory consumption was 120.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.4s, OverallIterations: 12, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 1176 SDtfs, 1677 SDslu, 4158 SDs, 0 SdLazy, 578 SolverSat, 100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 4917 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 568 NumberOfCodeBlocks, 568 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 106376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...