/usr/bin/java -Xmx8000000000 -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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 14:52:36,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 14:52:36,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 14:52:36,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 14:52:36,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 14:52:36,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 14:52:36,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 14:52:36,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 14:52:36,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 14:52:36,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 14:52:36,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 14:52:36,136 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 14:52:36,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 14:52:36,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 14:52:36,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 14:52:36,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 14:52:36,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 14:52:36,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 14:52:36,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 14:52:36,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 14:52:36,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 14:52:36,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 14:52:36,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 14:52:36,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 14:52:36,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 14:52:36,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 14:52:36,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 14:52:36,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 14:52:36,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 14:52:36,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 14:52:36,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 14:52:36,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 14:52:36,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 14:52:36,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 14:52:36,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 14:52:36,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 14:52:36,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-11-09 14:52:36,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 14:52:36,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 14:52:36,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 14:52:36,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 14:52:36,266 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 14:52:36,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 14:52:36,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 14:52:36,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 14:52:36,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 14:52:36,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 14:52:36,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 14:52:36,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 14:52:36,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 14:52:36,269 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 14:52:36,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 14:52:36,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 14:52:36,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 14:52:36,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 14:52:36,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 14:52:36,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 14:52:36,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 14:52:36,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 14:52:36,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 14:52:36,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 14:52:36,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 14:52:36,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 14:52:36,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 14:52:36,272 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 14:52:36,272 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 14:52:36,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 14:52:36,272 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 14:52:36,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 14:52:36,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 14:52:36,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 14:52:36,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 14:52:36,729 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 14:52:36,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-11-09 14:52:36,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a5cebe2/c1db042db1404479a3b9e4ae20fa4fda/FLAG710befd08 [2020-11-09 14:52:37,545 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 14:52:37,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2020-11-09 14:52:37,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a5cebe2/c1db042db1404479a3b9e4ae20fa4fda/FLAG710befd08 [2020-11-09 14:52:37,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a5cebe2/c1db042db1404479a3b9e4ae20fa4fda [2020-11-09 14:52:37,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 14:52:37,809 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 14:52:37,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 14:52:37,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 14:52:37,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 14:52:37,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:37" (1/1) ... [2020-11-09 14:52:37,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2689c3df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:37, skipping insertion in model container [2020-11-09 14:52:37,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:37" (1/1) ... [2020-11-09 14:52:37,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 14:52:37,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 14:52:38,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 14:52:38,349 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 14:52:38,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 14:52:38,587 INFO L208 MainTranslator]: Completed translation [2020-11-09 14:52:38,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:38 WrapperNode [2020-11-09 14:52:38,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 14:52:38,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 14:52:38,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 14:52:38,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 14:52:38,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:38" (1/1) ... [2020-11-09 14:52:38,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:38" (1/1) ... [2020-11-09 14:52:38,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 14:52:38,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 14:52:38,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 14:52:38,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 14:52:38,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:38" (1/1) ... [2020-11-09 14:52:38,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:38" (1/1) ... [2020-11-09 14:52:38,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:38" (1/1) ... [2020-11-09 14:52:38,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:38" (1/1) ... [2020-11-09 14:52:38,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:38" (1/1) ... [2020-11-09 14:52:38,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:38" (1/1) ... [2020-11-09 14:52:38,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:38" (1/1) ... [2020-11-09 14:52:38,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 14:52:38,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 14:52:38,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 14:52:38,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 14:52:38,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:38" (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 [2020-11-09 14:52:38,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-09 14:52:38,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 14:52:38,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 14:52:38,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 14:52:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2020-11-09 14:52:38,886 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2020-11-09 14:52:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2020-11-09 14:52:38,887 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2020-11-09 14:52:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 14:52:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 14:52:38,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 14:52:38,890 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 14:52:39,456 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 14:52:39,457 INFO L298 CfgBuilder]: Removed 32 assume(true) statements. [2020-11-09 14:52:39,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:52:39 BoogieIcfgContainer [2020-11-09 14:52:39,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 14:52:39,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 14:52:39,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 14:52:39,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 14:52:39,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:52:37" (1/3) ... [2020-11-09 14:52:39,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5add52c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:52:39, skipping insertion in model container [2020-11-09 14:52:39,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:38" (2/3) ... [2020-11-09 14:52:39,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5add52c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:52:39, skipping insertion in model container [2020-11-09 14:52:39,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:52:39" (3/3) ... [2020-11-09 14:52:39,468 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2020-11-09 14:52:39,485 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 14:52:39,486 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 14:52:39,492 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-09 14:52:39,495 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 14:52:39,549 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,549 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,550 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,550 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,550 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,550 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,551 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,551 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,551 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,551 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,552 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,552 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,553 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,553 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,553 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,554 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,554 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,554 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,554 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,554 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,555 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,555 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,555 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,555 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,558 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,559 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,559 WARN L313 ript$VariableManager]: TermVariabe |dec_bThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,559 WARN L313 ript$VariableManager]: TermVariabe dec_bThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,571 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,572 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,572 WARN L313 ript$VariableManager]: TermVariabe |dec_aThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,572 WARN L313 ript$VariableManager]: TermVariabe dec_aThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:39,589 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-09 14:52:39,602 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-09 14:52:39,627 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 14:52:39,628 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 14:52:39,628 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 14:52:39,628 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 14:52:39,628 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 14:52:39,628 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 14:52:39,628 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 14:52:39,629 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 14:52:39,643 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 14:52:39,644 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 137 transitions, 296 flow [2020-11-09 14:52:39,647 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 137 transitions, 296 flow [2020-11-09 14:52:39,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 127 places, 137 transitions, 296 flow [2020-11-09 14:52:39,721 INFO L129 PetriNetUnfolder]: 16/137 cut-off events. [2020-11-09 14:52:39,721 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-09 14:52:39,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 137 events. 16/137 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 98 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2020-11-09 14:52:39,729 INFO L116 LiptonReduction]: Number of co-enabled transitions 280 [2020-11-09 14:52:40,151 WARN L194 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-09 14:52:43,999 WARN L194 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-11-09 14:52:44,120 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-09 14:52:44,839 WARN L194 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-11-09 14:52:44,976 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-09 14:52:45,612 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-11-09 14:52:46,159 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-11-09 14:52:46,578 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-11-09 14:52:46,800 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-11-09 14:52:48,002 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-11-09 14:52:48,243 WARN L194 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-11-09 14:52:50,292 WARN L194 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-11-09 14:52:51,171 WARN L194 SmtUtils]: Spent 864.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-11-09 14:52:51,453 WARN L194 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-11-09 14:52:51,636 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-11-09 14:52:53,049 WARN L194 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-11-09 14:52:53,301 WARN L194 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-11-09 14:52:56,575 WARN L194 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-11-09 14:52:57,025 WARN L194 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-11-09 14:52:57,307 WARN L194 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-11-09 14:52:57,490 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-11-09 14:52:57,756 WARN L194 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-11-09 14:52:58,185 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 14:52:58,343 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-09 14:52:58,609 WARN L194 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-11-09 14:52:58,856 WARN L194 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-11-09 14:52:59,315 WARN L194 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-11-09 14:53:00,467 WARN L194 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-11-09 14:53:00,684 WARN L194 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-11-09 14:53:03,688 WARN L194 SmtUtils]: Spent 3.00 s on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-11-09 14:53:04,424 WARN L194 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-11-09 14:53:05,225 WARN L194 SmtUtils]: Spent 800.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-11-09 14:53:05,749 WARN L194 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-11-09 14:53:07,189 WARN L194 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-11-09 14:53:07,772 WARN L194 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-11-09 14:53:09,332 WARN L194 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-11-09 14:53:09,863 WARN L194 SmtUtils]: Spent 527.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-11-09 14:53:11,875 WARN L194 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-11-09 14:53:12,667 WARN L194 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-11-09 14:53:16,965 WARN L194 SmtUtils]: Spent 4.30 s on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-11-09 14:53:19,279 WARN L194 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 48 [2020-11-09 14:53:37,498 WARN L194 SmtUtils]: Spent 18.22 s on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-11-09 14:53:43,432 WARN L194 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 14:53:45,142 WARN L194 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-11-09 14:53:45,806 WARN L194 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-09 14:53:47,436 WARN L194 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 109 DAG size of output: 105 [2020-11-09 14:53:47,951 WARN L194 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-09 14:53:49,415 WARN L194 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 56 [2020-11-09 14:53:50,812 WARN L194 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 54 [2020-11-09 14:53:52,195 WARN L194 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 65 [2020-11-09 14:53:53,310 WARN L194 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 63 [2020-11-09 14:53:55,141 WARN L194 SmtUtils]: Spent 1.83 s on a formula simplification that was a NOOP. DAG size: 59 [2020-11-09 14:53:57,063 WARN L194 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 57 [2020-11-09 14:53:59,151 WARN L194 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 71 [2020-11-09 14:54:01,065 WARN L194 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 69 [2020-11-09 14:54:04,139 WARN L194 SmtUtils]: Spent 3.07 s on a formula simplification that was a NOOP. DAG size: 60 [2020-11-09 14:54:08,295 WARN L194 SmtUtils]: Spent 4.15 s on a formula simplification that was a NOOP. DAG size: 58 [2020-11-09 14:54:12,079 WARN L194 SmtUtils]: Spent 3.78 s on a formula simplification that was a NOOP. DAG size: 78 [2020-11-09 14:54:16,267 WARN L194 SmtUtils]: Spent 4.18 s on a formula simplification that was a NOOP. DAG size: 76 [2020-11-09 14:54:24,743 WARN L194 SmtUtils]: Spent 8.47 s on a formula simplification that was a NOOP. DAG size: 69 [2020-11-09 14:54:32,297 WARN L194 SmtUtils]: Spent 7.55 s on a formula simplification that was a NOOP. DAG size: 65 [2020-11-09 14:54:41,203 WARN L194 SmtUtils]: Spent 8.90 s on a formula simplification that was a NOOP. DAG size: 93 [2020-11-09 14:54:51,274 WARN L194 SmtUtils]: Spent 10.07 s on a formula simplification that was a NOOP. DAG size: 89 [2020-11-09 14:54:51,280 INFO L131 LiptonReduction]: Checked pairs total: 1302 [2020-11-09 14:54:51,280 INFO L133 LiptonReduction]: Total number of compositions: 161 [2020-11-09 14:54:51,287 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 29 places, 26 transitions, 74 flow [2020-11-09 14:54:51,305 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 72 states. [2020-11-09 14:54:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-11-09 14:54:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 14:54:51,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:54:51,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:54:51,318 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:54:51,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:54:51,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1119880514, now seen corresponding path program 1 times [2020-11-09 14:54:51,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:54:51,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188074658] [2020-11-09 14:54:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:54:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:54:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 14:54:51,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188074658] [2020-11-09 14:54:51,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 14:54:51,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 14:54:51,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [318483952] [2020-11-09 14:54:51,721 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:54:51,727 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:54:51,751 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 63 transitions. [2020-11-09 14:54:51,752 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:54:52,061 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [279#(not (= dec_aThread1of1ForFork1_thidvar0 1))] [2020-11-09 14:54:52,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 14:54:52,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:54:52,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 14:54:52,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-09 14:54:52,080 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 6 states. [2020-11-09 14:54:52,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:54:52,560 INFO L93 Difference]: Finished difference Result 72 states and 152 transitions. [2020-11-09 14:54:52,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 14:54:52,568 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 14:54:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:54:52,579 INFO L225 Difference]: With dead ends: 72 [2020-11-09 14:54:52,579 INFO L226 Difference]: Without dead ends: 59 [2020-11-09 14:54:52,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 14:54:52,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-09 14:54:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-11-09 14:54:52,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-09 14:54:52,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 127 transitions. [2020-11-09 14:54:52,624 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 127 transitions. Word has length 15 [2020-11-09 14:54:52,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:54:52,625 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 127 transitions. [2020-11-09 14:54:52,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 14:54:52,625 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 127 transitions. [2020-11-09 14:54:52,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 14:54:52,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:54:52,627 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:54:52,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 14:54:52,628 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:54:52,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:54:52,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1148508704, now seen corresponding path program 1 times [2020-11-09 14:54:52,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:54:52,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683042454] [2020-11-09 14:54:52,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:54:52,676 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-09 14:54:52,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184156094] [2020-11-09 14:54:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown